Refrigeration Engineering

Refrigeration Reciprocating Compressor Discharge Valve Blow-By Loss and Re-Expansion Work Penalty Calculator

Refrigeration Reciprocating Compressor Discharge Valve Blow-By Loss and Re-Expansion Work Penalty engineering calculator.

Quick Answer

Calculate Refrigeration Reciprocating Compressor Discharge Valve Blow-By Loss and Re-Expansion Work Penalty

Calculator

Energy loss rate (W)
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Result Interpretation

Refrigeration Reciprocating Compressor Discharge Valve Blow-By Loss and Re-Expansion Work Penalty Calculator computes Energy loss rate in W using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • Compressor speed = 25
  • Isentropic exponent of refrigerant = 1.13
  • Suction pressure = 350000
  • Discharge pressure = 1800000
  • Cylinder clearance volume = 2.5E-5

Expected Result:

  • Energy loss rate = 155.61633624553

Engineering Interpretation:

Under the given input conditions, the calculated result is: Energy loss rate = 155.61633624553 W.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.

Formula / Method

energy loss rate = (discharge pressure - suction pressure) * cylinder clearance volume * compressor speed * (1 - pow(suction pressure / discharge pressure, (isentropic exponent of refrigerant - 1) / isentropic exponent of refrigerant))

Formula family: formula_refrigeration_reciprocating_compressor_discharge_valve_blow_by_loss_re_expansion_work_penalty_calculator

Variables

SymbolLabelRoleDescription
P_discharge Discharge pressure INPUT Discharge pressure
P_suction Suction pressure INPUT Suction pressure
V_clearance Cylinder clearance volume INPUT Cylinder clearance volume
N_cps Compressor speed INPUT Compressor speed
k_ref Isentropic exponent of refrigerant INPUT Isentropic exponent of refrigerant
energy_loss_rate Energy loss rate OUTPUT Energy loss rate

Calculation Steps

  1. Enter the discharge pressure in Pa.
  2. Enter the suction pressure in Pa.
  3. Enter the cylinder clearance volume in m^3.
  4. Enter the compressor speed in 1/s.
  5. Enter the isentropic exponent of refrigerant in dimensionless.
  6. Step 1: Compute energy loss rate.
  7. Read the energy loss rate (W) from the results.

Engineering Summary

Calculate Refrigeration Reciprocating Compressor Discharge Valve Blow-By Loss and Re-Expansion Work Penalty

Frequently Asked Questions

What does this calculator calculate?

The Refrigeration Reciprocating Compressor Discharge Valve Blow-By Loss and Re-Expansion Work Penalty Calculator estimates Energy loss rate based on the input parameters you provide

Why is discharge pressure important in this calculation?

discharge pressure is directly proportional to energy loss rate. When you enter discharge pressure in Pa, the calculator uses it in the engineering formula to compute the output

How should I interpret the result energy loss rate?

The calculator outputs energy loss rate in W. For larger power values, divide by 1000 to express the result in kW, or by 745.7 for horsepower. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Discharge pressure (Pa), Suction pressure (Pa), Cylinder clearance volume (m^3), Compressor speed (1/s), Isentropic exponent of refrigerant (dimensionless). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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