Pump Delta Temperature

Calculate pump power loss and temperature rise due to pump inefficiency.

The delta temperature across the pump can be calculated by:

`Wh = ΔP Q `
`Wi = (Wh) / E `
`Wp = Wi - Wh `
`ΔTp = (Wp) / (ρ.Q.cp) = (1/E-1 ) (ΔP Q) / (ρ.Q.cp) `

where :

Q = flowrate
ΔP = delta pressure
Wh = hydraulic power
Wi = pump input power
Wp = pump power lost to inefficiency
ΔTp = delta temperature across pump
ρ = fluid density
cp = fluid specific heat
E = pump efficiency factor

The hydraulic power is the energy added to the fluid by the pump. The input power is the power required to drive the pump, including pump inefficiencies. The power loss is equal to the difference between the input power and the hydraulic power. The pump efficiency 0 ≤ E ≤ 1.

For closed system piping where the entire pump power is lost as system friction losses, the system fluid temperature rise can be calculated by

`ΔTs = (Wi) / (ρ.Q.cp). `

where :

ΔTs = system delta temperature

PLEASE NOTE : The pump calculators are currently being updated. Apologies for any inconvenience.

Change Module :

• Pump Affinity Or Similarity Law Scaling Calculation Module
• Pump And Piping System Curve Calculation Module
• Pump Best Efficiency Point (BEP) Scaling Calculation Module
• Pump Cavitation And NPSH Calculation Module
• Pump Delta Pressure Versus Flowrate Curve Calculation Module
• Pump Efficiency Curve Calculation Module
• Pump Flowrate Pressure And Power Coefficient Calculation Module
• Pump Hydraulic And Input Power Calculation Module
• Pump Liquid Vapour Pressure Viscosity And Density Calculation Module
• Pump Minor Loss Factor Calculation Module
• Pump Specific Speed Calculation Module
• Pump Variable Frequency Drive (VFD) Design Speed Calculation Module
• Pump Viscosity Correction Calculation Module
• All

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