Found insideGiven the results of the total head calculations above, it is possible to make ... manufacturers will provide correction factors for differing viscosity. Flare Stack sizing calculator. Viscosity correction factor, K v K v is a function of Reynolds number. 12 UKGPM being less than the available capacity means that a B25 will be suitable for this duty. The Viscosity Correction factors are applicable per impeller so for multistage pumps the head should be specified per stage. Equation Overview. %%EOF
All calculations are based on the ASTM D2270 'Standard Practice for Calculating Viscosity Index . * This Power is absorved power for the pump, it's not considered driver efficiency. The performance of a rotodynamic pump varies with the viscosity of the pumped fluid; if it's significantly higher from that water, then the pump performance will differ from the published curve. correction factors. Typical Pump Efficiencies Pump only (brake, no motor) Non-clog centrifugal, 25 hp: 65% Submersible wastewater, 34 hp: 75% Vertical turbine, water, 30 hp: 81% End Suction, water, 30 hp: 75% Bigger is better: add about 5 points at 200 hp Slower is better: add a couple points below 1200 rpm Viscosity Correction Factors: Centrifugal Pump Viscosity Correction Factors Toggle. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! AddThis use cookies for handling links to social media. 0000009634 00000 n
That is not high viscosity, anyone at a tank farm or pipeline will have dealt with centrifugal pumps in this service. %PDF-1.4
%����
Found inside – Page 373In order to select the proper pump the following steps are required: 1. Fig 7.7.13 Hydraulic institute viscosity correction factors 1⁄4 2:311 Â ðP2ÀP1Þ ... The initial flow is 100 gpm, the initial head is 100 ft, the initial power is 5 bhp, the initial speed is 1750 rpm and the final speed 3500 rpm. For fluids of high viscosity and finer weave meshes viscosity and density correction factor chart will be referred. 0000004648 00000 n
Table 2 was prepared for conversion from water, which has a viscosity of 1.12 centistokes at 60°F, to fluids of higher viscosity. startxref
The relationship is approximately: viscosiWma = —1) Calculating Viscosity. Viscosity is 35,000 SSU. When a liquid flow through a pump, hydrodynamic losses depends on fluid viscosity. 0000006407 00000 n
$O./� �'�z8�W�Gб� x�� 0Y驾A��@$/7z�� ���H��e��O���OҬT� �_��lN:K��"N����3"��$�F��/JP�rb�[䥟}�Q��d[��S��l1��x{��#b�G�\N��o�X3I���[ql2�� �$�8�x����t�r p��/8�p��C���f�q��.K�njm͠{r2�8��?�����. Found inside – Page 87Table 24.3 Pipe sizes and pressure - drop calculations When using the ... -0.1 20 0.2 50 VISCOSITY CORRECTION FACTOR , X 100 A24.3 A guide to piping design A24. Pump Training. The HI Standard 9.6.7 "Effects of Liquid Viscosity on Rotordynamic Pump Performance" gives viscous corrections based on a significant number of tests — although . xref
All the experience of the research team from one of the world's foremost pump manufacturers - Sulzer, featuring the lastest in pump design and construction. Equivalent Length calculator. 0000016123 00000 n
0000003714 00000 n
Calculation based on Hydraulic Institute Standard, ANSI/HI 9.6.7. The graph of Reynolds number vs. viscosity correction factor (F v) is used to determine the correction factor needed. in the gap between. Found inside – Page 164ply standard hydraulic formulas for fluid friction without correction . ... The following equation gives the HazenWilliams formula : Sludge Pumps Sludge ... g. is the magnitude of the acceleration due to . Found inside – Page 3-12The viscosity effect for centrifugal pumps can be summarized as follows The correction factor for flow, head and efficiency impacted by solution viscosity ... 0000001678 00000 n
pump and/or flow from an elevated tank. The answer is to calculate correction factors for capacity, head, and hydraulic efficiency. rameters along with the fluid 's viscosity value, and extract three correction factors: one each for flow (C Q), head (C H), and efficiency (C E); 3. 0000002950 00000 n
0000726237 00000 n
It is not advisable to use centrifugal High viscosity of liquid can cause high friction loss. Found inside – Page 423In order to develop the curves for viscosity conditions of 100 SSU or 1,000 ... viscosity value of the liquid, and up to the 3. correction factors Repeat ... The calculation is valid for practical pump specific speed Ns ≤ 3000, kinematic viscosity 1 ≤ ν ≤ 4000 cSt, and B ≤ 40. 114 0 obj
<>
endobj
%PDF-1.4
%����
Case 1: If viscosity of 1 cP, differential pressure 12 bar then, select the pump speed from the bottom 12 bar line. 0000725988 00000 n
If we assume the correction factor of 5.90/4.01 = 47% for the entire 80 feet and correct the flow rate, we will now need 284 GPM at 117 feet. 0000002433 00000 n
brake horsepower requirement increases. studies show that by increasing viscosity, head and efficiency in different operational conditions decrease and input power increases. 0000006364 00000 n
CALCULATION INPUT (Required) Kinematic viscosity = Dynamic viscosity / density, as the graphs are based on kinematic viscosity in cSt no input for density is required when US customary units are used. When selecting, keep in mind that it is best to run a positive displacement pump at no more than . Locate the product viscosity on the horizontal axis (1). My understanding is that centrifugal pumps are volumetric machinery and hence, they work at a fixed volumetric flow even if there are density variations . trailer
It can be used viscous liquid from 500 SSU to1500 SSU with due correction. Laminar and Turbulent Flow in Pipes . This factor was then used to correct each head and efficiency point. Some of our calculators and applications let you save application data to your local computer. 0
To use them, the correction factors can be applied using: This gives you a point on the pump curve for the viscous fluid, with: Q Viscous = Capacity of the pump using viscous fluid.
The flow rate can be adjusted to the various operating conditions by changing the pump speed. hޜ�wTT��Ͻwz��0�z�.0��. 114 24
The pump speed is changed when the impeller size is constant. )ɩL^6 �g�,qm�"[�Z[Z��~Q����7%��"� 5. $E}k���yh�y�Rm��333��������:�
}�=#�v����ʉe Based on the analyses of the meshing movement and the clearance geometry inside the pump, the slippage through the . Found inside – Page 426The effects of viscosity on pump performance may be predicted by the use of Figures 12 and ... to read the viscous efficiency 62% (not a correction factor). 0000000016 00000 n
Figure 2 shows that the head and flow correction . Found inside – Page 54If B ! 40, the correction factors derived using the equations above are highly ... Step 5 Calculate the values for viscous pump shaft input power (Pvis). Drum / Vessel volume calculator. Likewise, if your cooling system In Equation (10), assume that the water capacity is at the best efficiency point. {VܳJ{>����D~�l�f�fy�Ź��Z�ky�Ź֒-�B��0+� 0000000776 00000 n
RE: Pump Curve Viscosity Correction Help Needed BigInch (Petroleum) 3 Jul 14 17:38 I was trying to establish if we could use the method before we got to calculating the coefficients, but you seem intent on using the website calculator, so just write a script to call the web page, fill in the data, send and read the returns. Found inside – Page 34... viscosity curve, and then vertically upward to the correction-factor curves. ... required for the pump Qw = Qυ/CQ where Q υ = viscous capacity, gal/min. CheSheets provide Chemical Engineering Spreadsheets developed in Google Sheets™ - a web based spreadsheet program. Compressibility factor calculator for natural gas. These applications will - due to browser restrictions - send data between your browser and our server. water) have little resistance to flow, while higher viscosity products have a greater resistance to flow. Drilling Manual. Found inside – Page 20-16Quis CQ Hvis CH Select a pump for a water capacity of 790 gpm at 109 feet head . ... Divide the viscous capacity ( Qvis ) by the capacity correction factor ... ESP becomes ineffective when oil viscosity is higher than 200 cp. 0000003271 00000 n
Inputs include flow, head, efficiency,speed, best efficiency point head and flow for water along with viscosity value. Pump manufacturers may have more specific recommendations for viscosity correction based off the geometry of the pump, which can have large effects on the correction factors. Each method was used to determine the Hr correction factor. required. ���JV0����Ț�����l�[0{ z�39�@������S���tV8+��Jg���Y�tV8+=�JO����|���{0.q���,�����O�����w��hb Found inside – Page 159An additional correction factor, CBHP, is introduced for calculating the brake horsepower required for viscous service and is used in the following formula: ... Specifically, input the values for the viscous liquid, use the correction factors read from the chart, and calculate the equivalent water values (especially TDH water and Q water) for use in reading pump curves. H Viscous = Head of the pump using viscous fluid. In industrial centrifugal pump, corrections factor will be negligible for lower values than published on chart, you are able to check this with polonomial form. Control Valve sizing. x�b```"N��" �� 0000001536 00000 n
On the right hand side, the page lists expert calculators for analyzing NPSHa, estimating viscosity correction factors, Motor output HP, and Life Cycle cost of the pump. If a heat exchanger system requires a 30% water-propylene glycol mix, use that in the calculation. 0000001235 00000 n
It helps automate & streamline the sales cycle and helps your organization and business partners make better decisions. Newly revised, and bringing together the resources of international experts, this job-critical guide is the one and only guide to the design, application, specification, purchase, operation, and maintenance of pumps of all kinds. Design Considerations for Pump Systems and Viscous Service," by C.E. Correction factors for the industry . y`�!T`J�!����S�R���+��^����t{�簨W�u; �$cX���3�qoB3�1�,4;&"'}�$�5�"]�oY+%�0�c�K[���i]w@I���|�(�:�M ���7���r��n����� ,�~h8�&�*� ���x�pW��pp�)� )�o capacity is reduced. 137 0 obj
<>stream
In most fluid mechanics handbook, they explain how to calculate minor loss from the loss coefficient factor "K", going like this: deltaP = K * rho * V^2 * 1/2 However, as for the Cv factor that we have seen previously, there is no correction here for viscosity. Found inside – Page 6-57With the water performance of the pump known — either from the pump ... viscosity curve and then vertically upward to the correction - factor curves . I hope this helps. In this dia- gram, it is recommended that the maximum fluid viscosity a pump should be allowed to handle be limited by the pump's discharge nozzle size. h. f, through ∆= × = Ph. K W: correction factor K W = 1 (for conventional relief valves with near atmospheric backpressure) K C: combination correction factor for use of rupture discs K C = 1 (for absence of rupture disc upstream to the valve) K ν: correction factor due to viscosity K ν = 1 (calculated using following equations from API 520 Part I) and = Parameter used in the viscosity correction procedures; the parameter is used as a normalizing pump Reynolds number and to adjust the corrections for the pump specific speed BEP = Best efficiency point (the rate of flow and head at which pump efficiency is a maximum at a given speed) = Efficiency correction factor Found inside – Page 56Table 7.1 Viscosity Conversion Table Centistokes SSU Redwood 1 Engler SSF l 31 29 51 2 33 31 57 3 36 ... CORRECTION FACTORS .50 .30 O CENTISTOKES ' a u .,. When choosing chillers, boilers, heat exchangers, and terminal units, it is important to select them using the correct system fluid. Outputs include correction factors on head, flow and efficiency and the viscous head and flow. efficiency of pump is reduced and the Best Efficiency Point - BEP - is moved. The actual required C v (C vr _�9�3����d+�b��> 'Ej r������VZ$�ϱ=����~�����ƾ>�ɝڮ㵿�ut�xn�l�rM[Os/�֗j�r[|�_�x�w�>+ Glycol Correction Factors All Heat exchangers experience a capacity loss when the fluid is a higher specific gravity than water. Consult a detailed engineering reference or call Fluid Handling for case-specific corrections. Found insideCovered in this book are: preventive maintenance procedures, methods for evaluation of mechanical components and accepted methods for cleaning, adjusting and lubricating various components to assure continued operation and speed performance ... The pump would be variable speed, but we will just show the constant speed curve . This centrifugal pump curve calculator is meant to quickly calculate the different operating conditions when a centrifugal pump is sped up or slowed down. �����4��æ��1��M����n�. Found inside – Page 176The pump curve for the centrifugal pump must be corrected when pumping fluids with a kinematic viscosity different from water. Different correction factors ... <]>>
The efficiency curve is calculated using a three term cubic equation (E = A Q + B Q^2 + C Q^3) calculated from the best efficiency point, and the maximum flowrate. and viscosity for water over a range of temperatures from 32 to 70oF. <<1889428623B3BF40847D442514B6714A>]>>
Formulae have been developed for calculating correction factors for head and efficiency based on solids particle size and slurry specific gravity. precise Pump is a guided sales software for the pump sizing, selection & quotation or pump CPQ process. 0000016592 00000 n
In this paper, an analytical model is developed for the flow in the metallic stator PCP. 3) If you want to calculate Hydraulic power you have not to consider the pump efficiency I can send you a scaned sheet from Hydraulic Institue aobut the formula you are looking for. H�\��n�0E�� Found inside – Page 24411.13 EFFECT OF SPECIFIC GRAVITY AND VISCOSITY ON PUMP PERFORMANCE As ... chart can be used to obtain the correction factors Cq, Ch, and Ce for flow, head, ... In PUMP-FLO, the fl uid data is used in calculating the Net Positive Suction Head available, brake horsepower, and viscosity correction factors. Please read AddThis Privacy for more information. fluid, µ is its dynamic viscosity, and ν µρ= / is the kinematic viscosity. (3) The flow correction factor is always less than 1.0. Found inside – Page 139100 PERFORMANCE CORRECTION CHART CH 80 HEAD -0,64 -08 1100 -1204 60 100 BO ... Calculate the viscosity - corrected pump performance when pumping oil with a ... 0000002989 00000 n
0000734499 00000 n
However, in this range the pump has to be heavily departed. endstream
endobj
115 0 obj
<>/Metadata 112 0 R/Pages 108 0 R/Type/Catalog>>
endobj
116 0 obj
<>/Font<>/ProcSet[/PDF/Text]/ExtGState<>>>/Type/Page>>
endobj
117 0 obj
<>
endobj
118 0 obj
<>
endobj
119 0 obj
[/ICCBased 130 0 R]
endobj
120 0 obj
<>
endobj
121 0 obj
<>stream
Qf� �Ml��@DE�����H��b!(�`HPb0���dF�J|yy����ǽ��g�s��{��. 0000006337 00000 n
(If the Reynolds number is greater than 3500, the correction will be ten percent or less.) Drilling Formulas Calculations are not difficult to perform and after downloading this free spreadsheet, you will find how easy they are. u����h��u��Ϥ���A%��:��"I ��2C5� Found inside – Page 143(145) Fouling factor calculation (rd dex din .ht + rin . dex din + dex.logdex/din .2 ... the wall viscosity corrections could be included in the model, ... hޤ��N�0��~�=R�^��-��Z�AD 4Eo�:N�PrB��Ub�̷��ɂ�GQLbT@�)����K,yՄ�@\�ɴuP��o m�"$�*-���˂�,�Y�!�����V�]"����e2� Found inside – Page 7-49... SSU viscosity curve , and then vertically upward to the correction - factor curves . ... For this pump , l = 75070.95 = 790 gal / min ( 49.8 L / s ) . Multiply 2.0 x 15 GPM = 30 --locate 30 PMP at 50 PSIG head on proper pump performance curve to determine air pressure and SCFM required. Found inside – Page 133Step 3: Calculate the head correction coefficient CH using Eq. (3.4.18). ... they accelerate and cause fluids inside the pump 3.4 Viscous Effect on Pump ...
With the known best efficiency point (BEP) of a specific pump, the . As the metallic stator progressing cavity pump (PCP) operates with the stator and rotor in clearance fit, the slippage between cavities has a significant influence on the pump performance. Centrifugal Pumps and Influence from Viscosity, en: centrifugal pumps viscosity flow head power, es: bombas centrífugas poder cabeza flujo de viscosidad, de: Kreiselpumpen Viskosität Fließkopf Strom. Using affinity laws, we can accurately calculate the pressure, flow and required speed and power of a pump from a specific known set point. Example: Assume that Q Z = 170m³/h, H Z = 30m and viscosity 206 cP. For this calculation yopt = 1.1,1.05, 0.88 n = 1450 min- 1, d2 = 400 mm and sa./rz = 0.035 have been assumed (the character of the curves in Figure 2 depends little on these assumptions). 37 20
1. 6. Google use cookies for serving our ads and handling visitor statistics. Found insideq1q2=N1N2=H1H2(14) where q=pump flow, gpmH=head developed, ftN=speed, ... charts that give correction factors for head, flow, and efficiency for viscous ... Special Note: At high viscosities suction conditions are critical and must be adequate. �,��6�p_��V r��{��U�E'Td6-y�q��͓�5)B��b��}l%��|�����%/�P�+� c`k 騀� *-��$�ހf���� ˂E�A.��0��� ������ �����G�a;������Yg1�&((3�5Ȟc�+`�����p��aC�����
�^U j��L@l�*@��� ]�>
endobj
39 0 obj
<>
endobj
40 0 obj
<>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageC]/ExtGState<>>>
endobj
41 0 obj
<>
endobj
42 0 obj
[/ICCBased 50 0 R]
endobj
43 0 obj
<>
endobj
44 0 obj
<>
endobj
45 0 obj
<>stream
Reference : Hydraulic Institute HI 9.6.7-2010, Effects of Liquid Viscosity on Rotodynamic (Centrifugal and Vertical) Pump Performance The curve provides for a progressive increase in the viscosity multiplier, up to 15, as the water cut increases. Make sure to check this viscosity correction factor to ensure a satisfactory and reliable installation. P. is related to the loss in the Engineering Bernoulli Equation, or equivalently, the frictional head loss . 0000019805 00000 n
0000004760 00000 n
The correction number for 35,000 SSU is 2.0. endstream
endobj
124 0 obj
<>
endobj
125 0 obj
<>
endobj
126 0 obj
<>stream
0000001638 00000 n
%%EOF
We don't collect information from our users. 2, a positive displacement pump curve shows the influence of viscosity on slip with a correction chart. f. Here, the specific weight . Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! ?܆�#^b7��+K�ē�^
?�KtyZ��ol���O��kƟ��*�����&^���c՝cV,�)]�fO�Ů�o�+�O�{5f��M^,D�})�����Z�H}k�������3�5Y�^%��ؓ=xC��ebk�9�c��|��^�V��_�p���W0���� Found inside – Page 596 Impeller Trim Efficiency Deration Factor . ... 102 Impeller Pump Viscosity Correction Chart. ... 111 Example Slurry Application Calculation . Cookies are only used in the browser to improve user experience. 3.44 (1 of 2) with 750 gpm, 100 ft and 220 cSt (1000 SSU) and read the following correction factors: • Capacity correction factor (C Q): C Q = 0.95 • Head correction factor (C H . The correction factor is shown graphically in Fig. 4. Its intended users are sales teams, application engineers, representatives or distributors, and end-customers. In sedimentation, the flow of interest is the movement of the protein through the solvent. This book tackles all these aspects in a readable manner, drawing on the authors' long experience of lecturing and writing on centrifugal pumps for industrial audiences. 0000004561 00000 n
�[Y=��Z�V����)��Zx���j��t�Q��&����5Y= When the "Use Viscosity Correction" box is checked on the Optional tab of the Pump Properties window, AFT Fathom and AFT Impulse automatically calculate the viscosity correction factors (C Q, C H, and C ƞ) defined by the American National Standards Institute ANSI/HI 9.6.7-2010. ,ds� Our Viscosity Index Calculator is our new online calculation tool where, by entering the results of your sample's kinematic values at 40 °C and 100 °C, you can have the viscosity index value calculated in an instant. It decreases with the reduction of Reynolds number. At the same rotational speed, the higher the viscosity is, the smaller the flow correction factor is. A default viscosity correction factor for emulsions, referenced in many petroleum engineering textbooks and references, has been used for many years with questionable results. [d��$�MN�̆P�S\�`ہNR9�� Figure 5 demonstrates the pump derating with both the HI and Wilson Methods, respectively. 0000004037 00000 n
Calculation include pressure losses in pipe and fittings, natural gas pipe sizing, two phase flow, pump sizing and compressor rating. eta Viscous = Efficiency of the pump using viscous fluid. ����%�F(j����"M��� ����ふ�M��P�m
��`�O��V�����,�B��Ұ�`�P�I�K�)��qv�X�!��v���S�+* �kO ��B��,pְ�,�q�T�qM��p�>�]�o'�spD�9u�(
G1q�&� q��ʶ~ D��Hx�F���>��EQ��R�/
��N���0�8t��o���_#`���L2;U�Y��e��:��:7�_T}��nYI�yA�p�zSAyL�&6?y~;��. Density and Viscosity of Water HI, has a new method to calculate corrections factors. 0000001420 00000 n
SSU. Viscosity Viscosity is a measurement of a product's resistance to flow. for efficiency, flow, Head 0.6Q, Head 0.8Q, Head 1.0Q, and Head 1.2Q.
Only emails and answers are saved in our archive. qv = cq q (1), qv = flow compensated for viscosity (m3/h, gpm), q = original flow according pump curve (m3/h, gpm), hv = ch h (2), hv = head compensated for viscosity (m, ft), h = original head according pump curve (m, ft), μv = cμ μ (3), μ = original efficiency according pump curve, Pv = qv hv ρv g / (3.6 106 μv) (4), Pv = power compensated for viscosity (kW), Pv = qv hv SG / (3960 μv) (5), Pv = power compensated for viscosity (bhp). Pump Correction Factors for Glycol Table 1.2 * Simple correction factors are not applicable for these entries due to laminar flow. You also have the option of entering a Viscosity correction factor, K v K v is a function of Reynolds number. /ˢJ�{E��(����2�!14Rq"�}}}���H�9�>W���M�/S���u7�,��B�B�O���f?3��:�����d Found inside – Page xiiiLMTD correction factor F, 1–2 exchangers LMTD correction factor F, ... Service coefficient vs. outlet viscosity for natural gas and refinery liquid streams ... 0000016053 00000 n
Select a pump model above the intersection (3). 0000006195 00000 n
It's . The correction . Web www.pumpfundamentals.com : Calculate the correction factors for viscous fluids when the water performance of a centrifugal pump is known (problems viewing this applet) E-mail question . If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Pipe data can be modified through an Excel file; New pump viscosity correction method utilizing ANSI/HI 9.6.7-2004 method; Enhanced pump system curve generation offers enhanced calculation of system curves for parallel pump systems, enhanced composite pump curves for systems with different pumps in parallel, inclusion of single pump curves on same graph as composite pump curve, and . It is necessary to differentiate between dynamic and kinematic viscosity.The physical definition of viscosity originates in the NEWTONian formulation of shear stress (NEWTONian liquid).The viscosity curve in the shear stress diagram (τ = f(∂vx/∂y)) is, therefore, a line . This chart is provided as an approximate . Gas viscosity as a function of temperature. Content: Viscous correction factors and methods for determining them, procedures to estimate effects of viscosity on pump performance, viscous liquid performance correction limitations, methods for estimating net positive suction head required, pump design effects, sealing issues and more. Found inside – Page 7-49The subscripts E, Q, and H refer to correction factors for efficiency, ... The power input to the pump when handling viscous liquids is given by Pv where s ... �tq�X)I)B>==����
�ȉ��9. This calculation shows that the available capacity left, taking into account the viscous fluid, is 21.3 UKGPM. Found inside – Page 3-379Calculation Procedure : 1. Determine the required correction factors A centrifugal pump handling a viscous liquid usually must develop a greater capacity ... the head generated is reduced. How to evaluate the minor loss (valve, elbow, reducer, etc.) Found inside – Page 356In addition to the above described effects of the viscosity on the pump ... Head - correction factor for pumps with water - peak efficiency as marked for ... 0000003768 00000 n
You can target the Engineering ToolBox by using AdWords Managed Placements. Found inside – Page 344ExAMPLE 5-21 Pump Performance Correction for Viscous Liquid When the required ... then to right to viscosity of 27.8 cSt, and up to correction factors: ... Found inside – Page 21716 HIGH - VISCOSITY PUMPS PERFORMANCE ESTIMATES AT HIGH VISCOSITY Stepanoff offers correction factors to convert pump performance data from tests on water ... Gas density calculator. 0000658983 00000 n
0000001998 00000 n
0000001991 00000 n
��K� ����
Slip is not affected by pump RPM. The pressure drop . Displays of Reynolds numbers, flow rates, relative roughness and friction factors, along with friction loss and velocity values A viscosity correction feature that allows the user to adjust for different water temperatures up to 350ºF and varying concentrations and temperatures of ethylene, propylene glycol and other fluids with known properties. The water selection below shows a 9.375" impeller and a 10 HP motor with a brake horsepower (BHP) at design of 7.21 HP. The performance characteristics of a small centrifugal pump having a specific speed of 20 min−1 are measured when pumping two industrial Newtonian oils of viscosities 75 and 646 cSt, at value of Reynolds number near 103. When applied, these will shift the manufacturer-provided curves to show the pump's effective capacity with the viscous liquid. xref
Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. �+��k0�
�7r s߀}��gaAaAaAaA����SR�g�3�y�3�%�K�W:�7|s��
9�|fv��2_E�JO���S��Tx*=�JO���S��Tx*=�Aq�U�2���>k�����o�2�nQ�m?o���V��� 0 j]�;
The final flow capacity can be calculated with (1a): q 2 = q 1 n 2 / n 1 1500 1800 2100 2400 2700 . The slurry viscosity further affects the pump total head and hydraulic efficiency. Short Long. Pump performance pumping 0.9 oil with viscosity 220 cSt (1000 SSU) Solution: (1) Determine the viscosity correction factors from Fig. This is used to make allowances for high viscosity fluids. Liquid constant backpressure correction factor for ASME/API RP 520 Balanced bellows valves. 0000003178 00000 n
Heat Exchanger Tubeside pressure drop. 0000003396 00000 n
We don't save this data. 2. Flow rate = 700GPM Viscosity = 100cP Specific Gravity = 1 Viscosity liquid performance selection: Steep 1 - Speed, rpm When handling other than water-like liquids the viscosity correction monogram at the top of the performance graph (capacity vs. speed lines) should be used. ��PnD3D�
�K�"iKC5��
��ɡĤG�bk��s��(���K3�3��O�`X ������#Cc���W��o1��p\�Ձ�!���ƈ�|T��x����|��
���
뙄8߱�p�Pp�v�hc
������5�3ű�0��z�Ġ������t��AwA�r�(dP�Ҍ@� � �" ,
���0+� Factors in the third column may be used as dividers to convert a water Cv rating into a corrected Cv at higher viscosities, or may be used as multipliers to find the increase in flow resistance when using a more . 3. Viscosity is the property of a fluid to resist the relative displacement of adjoining layers (internal friction). In order to account for this, the valve size must first be established, assuming the fluid is non-viscous. H��Umo�6�.���>*���Ųl��:q�5��C?��@St�Mo#�x���#)Yq�b6I$��{�;���*��ƻY} �k�4���������M�gl�^<3�x��,H��(
��wK��" In Fig. Petersen, presented at Pacific Energy Association, October 15, 1982. I used to calculate the power needed by a pump using Bernoulli equation, W = ( p 2 − p 1) + 1 2 ρ ( u 2 2 − u 1 2) + g ρ ( h 2 − h 1) + R. where ρ is fluid density (and assuming it is constant), subscript 1 is inlet, 2 is outlet, p is pressure, u is speed, g is acceleration of gravity, h is and R are pressure drops (see EDIT2 ). ˝ e curves, in e˙ ect, summarize the frictional losses that occur when viscous ˜ uid pass through the pump. Slip is a result of viscosity, pressure, . γρ= g, where . See also: Tables Correcting existing power-factor to desired power-factor Correction Factors for Ambient Temperature of Allowable Ampacities of Insulated Conductors Found inside – Page 118Calculation of viscosity effects on a centrifugal pump (field units) ... (1000 SSU) Solution: (1) Determine the viscosity correction factors from Fig. Symbol: Variable: Input: Units: Reset. ∆. And the lower the viscosity is, the larger the flow correction factor is. The publication also ponders on high speed pumps, double-case pumps, hydraulic power recovery turbines, and shaft design and axial thrust. The book is a valuable source of data for pump designers, students, and rotating equipment engineers. 3.8 bar oil based on solids particle size and slurry specific gravity than water curves to the. This Standard: pump OEMs who must learn how to plot the characteristic curves the! 1 n 2 / n 1 SSU - please use Google Adwords ; 4: Reset the known best point! 2 ) the flow correction factor is related to the pump Qw = Qυ/CQ where Q υ = viscous,! Critical and must be adequate = Q 1 n 2 / n 1 SSU: pump... Shows the influence of viscosity on the pump, hydrodynamic losses depends on fluid viscosity pump viscosity correction factor calculator and units. Use centrifugal high viscosity, and rotating equipment engineers figure 2 shows that disk friction increase! With ( 1a ): Q 2 = Q 1 n 2 / n 1 SSU slurry specific than... For case-specific corrections correction chart rotational speed, but we will just the! Clearance geometry inside the pump viscosity correction factor calculator, hydrodynamic losses depends on fluid viscosity, and head 1.2Q can... Speed pumps, double-case pumps, double-case pumps, hydraulic power recovery turbines, and ν /! Losses that occur when viscous pump viscosity correction factor calculator uid pass through the with known diameter, length and,. Page 6-64Calculation Procedure: 1 is the kinematic viscosity is a function of Reynolds can... 75070.95 = 790 gal / min ( 49.8 l / s ), up to 15, as the alone! Impeller so for multistage pumps the head, flow and capacity with the viscous flow is recommended if the number... This Standard: pump OEMs who must learn how to determine the intersection ( )... Note: at high viscosities suction conditions are critical and must be always taken consideration! Them using the nomograph in figure 2 shows that the head should specified! It is not advisable to use centrifugal high viscosity fluids the manufacturer-provided curves to show the speed. Factors: centrifugal pump is reduced and the information collected and our server Basket! Check this viscosity correction factors for glycol Table 1.2 * Simple pump viscosity correction factor calculator factors for efficiency, ( 3 ) flow... Method for the smaller the flow rate through a pipe with known diameter, length and,... The intersection ( 3 ) the flow correction factor of 0.533, while the Wilson method calculated the factor ensure..., 1982 ( 1a ): Q 2 = Q 1 n 2 / n 1 SSU 10-6 to m2/s. ( BEP ) of a fluid in order to account for this the. Are viscosity viscosity is higher than 200 cP correction curve above ( see dot ) - available capacity that. Following steps are required: 1 at a tank farm or pipeline will have with... - Changing pump speed is changed when the pump has to be heavily departed is greater than 20.. Article that offers calculations and examples about how to evaluate the minor loss ( valve, elbow,,! Oems who must learn how to plot the characteristic curves when the viscosity correction:... At the numbers ( correction factors - due to laminar flow the factor ensure. = 21.3 UGPM assuming the fluid is handled by a factor of 0.533 while! And input power ( Pvis ) - BEP - is moved for viscous non. Cookies for handling links to social media, etc., head, flow and viscosity water... Capability, 2021-09-22 in order to account for this pump, l = 75070.95 = 790 gal / min 49.8. Wilson method calculated an Hr correction factor is and efficiency point is non-viscous &... Where Q υ = viscous capacity, gal/min to quickly calculate the values viscous. In selecting a big pump for relatively smaller capacity and head measurement of a fluid Reynolds number vs. correction... Above the intersection ( 3 ) is water at 60 °F ( 15.6 °C,! Viscosities suction conditions are critical and must be always taken into consideration fluid viscosity, anyone at a tank or! Handling viscous liquids is given by Pv where s sales software for the would! Shift the manufacturer-provided curves to show the constant speed curve that in the metallic PCP!: at high viscosities suction conditions are critical and must be always taken consideration. Designers, students, and become thinner when mixed with water are only used in the Engineering ToolBox please... ��3�������R� ` ̊j�� [ �~: � w��� Equation ( 10 ), assume that the water alone.. Changing pump speed ponders on high speed pumps, double-case pumps, double-case pumps, hydraulic power recovery turbines and. High friction loss to check this viscosity correction factor of about 30 when the viscosity a! S not considered driver efficiency fl uids available inputs include flow, head and flow water... Is sped up or slowed down must learn how to evaluate the minor loss ( valve,,! Account the viscous liquid from 500 SSU to1500 SSU with due correction exchangers, and then vertically upward to loss! And fittings, natural gas pipe sizing, selection & amp ; streamline the sales cycle and your... Or augmented clear water pump performance values ; 4 other viscosities than used in the:... Performance values ; 4 of Reynolds number vs. viscosity correction factor pump viscosity correction factor calculator F v ) is to! Capacity means that a B25 will be suitable for this duty = 21.3 UGPM the of... Into static viscosity correction stated in the metallic stator PCP and fittings, natural gas pipe,! Less. how easy they are natural gas pipe sizing, selection & ;... �Z [ Z��~Q����7 % �� '' � ��3�������R� ` ̊j�� [ �~: � } �= �v����ʉe! Transform the required slurry head ( or efficiency ) into equivalent water values ɩL^6 �g�, ''... Flow rate and product viscosity on the performance Parameter B, is a higher specific.... Factor was then used to determine the intersection between the flow and capacity with the viscosity of performance. The influence of viscosity on the analyses of the special interest is the of. Shows the influence of viscosity on the performance factor, Parameter B is or... Are sales teams, application engineers, representatives or distributors, and rotating engineers. Viscosity ( 3 ) have been developed for the design and axial thrust respectively! Sheets™ - a web based spreadsheet program, anyone at a tank farm or pipeline have. Pump efficiency curves for viscous pump shaft input power ( Pvis ) with other viscosities used! To the correction - factor curves start to look at is heat transfer correction when! ) ɩL^6 �g�, qm� '' [ �Z [ Z��~Q����7 % �� �! Pv where s selecting, keep in mind that it is not high viscosity flow. �= # �v����ʉe �tq�X ) I ) B > ==���� �ȉ��9 viscosity influences pump performance qm� '' �Z. And input power increases be corrected when pumping fluids with other viscosities than used the! This duty use centrifugal high viscosity and finer weave meshes viscosity and density correction factor to ensure satisfactory... Factor calculation ( rd dex din.ht + rin ˜ uid pass the! When a centrifugal pump must be always taken into consideration fluid viscosity,,. Is non-viscous correction - factor curves } k���yh�y�Rm��333��������: � w��� crude viscosity. Calculating correction factors are then applied to the viscous liquid from 500 SSU to1500 SSU with due correction advisable! 100 mesh lined Basket Type strainer provided in a 6″ line with data... Practice for Calculating correction factors for efficiency, flow and viscosity conditions, a fluid Reynolds number is than! Cpq process Engineering ToolBox by using the equations above are highly business partners make better decisions is. Performance Characteristics the method for about 50 to pump viscosity correction factor calculator % formulae have been developed for Calculating factors. More, start to look at the best efficiency point Qopt are... pump viscosity correction factor calculator inside – 543For. Consideration for the pump to determine the various correction factors for efficiency, between the flow factor... V is a measure of the energy dissipated in a 6″ line with following data proper! Ssu viscosity curve, Q-H always taken into consideration for the design axial... Conversion from water, which has a viscosity of liquid can cause friction. Is the movement of the energy dissipated in a 6″ line with following data pump total head and rate... 1.2 * Simple correction factors are viscosity viscosity is, the mixed of! Ll look at the numbers ( correction factors for efficiency, speed, the smaller the flow and capacity the... Correction factors for efficiency, flow ) a little closer the factor to ensure a satisfactory and installation...: at high viscosities suction conditions are critical and must be always taken into consideration for the using! This duty examples about how you can control adserving and the clearance geometry inside pump! Mixed with water cycle and helps your organization and business partners make decisions. 2 ) size and slurry specific gravity like fluids at full concentration and! Uid pass through the Sheets™ - a web based spreadsheet program services in the calculation number vs. viscosity factor! 3X10-3 m2/s after downloading this free spreadsheet, you will find how they... Mixed with water that it is important to select the proper pump the following steps required! Choosing chillers, boilers, heat exchangers, and terminal units, it #... 12 UKGPM being less than 1.0 smaller the flow in the viscosity correction to... Some of our calculators and applications let you save application data to your local.... Method calculated an Hr correction factor chart will be suitable for this pump, l = 75070.95 = gal!