1. What is a Heat Pump COP Calculator?

Definition: This calculator determines the Coefficient of Performance (COP) of a heat pump system for a house, which measures its efficiency.

Purpose: It helps homeowners and HVAC professionals evaluate the energy efficiency of heat pump systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{COP} \) — Coefficient of Performance (dimensionless)
• \( Q_h \) — Heat output delivered to the house (Joules)
• \( W \) — Work/energy input required (Joules)

Explanation: The COP represents how many units of heat energy are produced per unit of work input. Higher COP values indicate more efficient systems.

3. Importance of COP Calculation

Details: Understanding your heat pump's COP helps assess energy efficiency, operating costs, and environmental impact of your heating system.

4. Using the Calculator

Tips: Enter the heat output (Q_h) in Joules and the work input (W) in Joules. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a good COP value for a heat pump?
A: Typical values range from 2-5. Higher values indicate better efficiency. Modern systems often achieve COPs of 3-4 in moderate climates.

Q2: How do I find the heat output and work input values?
A: These can be obtained from your heat pump's specifications or measured using energy monitoring equipment.

Q3: Can COP be less than 1?
A: For heat pumps, COP should always be >1. Values <1 would mean the system is less efficient than direct electrical heating.

Q4: Does COP vary with temperature?
A: Yes, COP typically decreases as outdoor temperatures drop, as more work is needed to extract heat from colder air.

Q5: How does COP relate to energy costs?
A: Higher COP means lower operating costs. A COP of 3 means you get 3 units of heat for every 1 unit of electricity used.