Power Consumption Formula:
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Definition: This calculator estimates the electrical power consumption of a heat pump based on the heat load and coefficient of performance (COP).
Purpose: It helps HVAC professionals and homeowners determine the electrical requirements of heat pump systems.
The calculator uses the formula:
Where:
Explanation: The heat load (thermal output needed) is divided by the COP to determine the electrical input power required.
Details: Accurate power calculation ensures proper electrical system sizing, energy efficiency assessment, and operating cost estimation.
Tips: Enter the heat load in Watts and the COP value (default 3.0). All values must be > 0.
Q1: What is COP in heat pumps?
A: COP (Coefficient of Performance) is the ratio of heat output to electrical energy input. Higher COP means more efficient.
Q2: What's a typical COP value?
A: Most modern heat pumps have COP values between 2.5 and 4.0, depending on temperature conditions.
Q3: How do I find the heat load?
A: Use a heat load calculator or manual J calculation for your building's specific requirements.
Q4: Does this include auxiliary power?
A: No, this calculates only the compressor power. Add fan/pump power separately for total consumption.
Q5: Can I use this for cooling mode?
A: Yes, but use cooling COP (EER/3.412) and cooling load instead of heating load.