Home Back

Radiator Calculator Heat Pump

Heat Pump Output Formula (Low Temperature):

\[ Output = nominal \times \left(\frac{\Delta T_{low}}{50}\right)^{1.3} \]

W
K

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is a Heat Pump Radiator Calculator?

Definition: This calculator estimates the heat output of radiators when used with heat pumps at lower temperatures.

Purpose: It helps HVAC professionals and homeowners determine radiator performance with heat pump systems.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Output = nominal \times \left(\frac{\Delta T_{low}}{50}\right)^{1.3} \]

Where:

Explanation: The formula adjusts the nominal output based on the actual temperature difference, accounting for non-linear heat transfer characteristics.

3. Importance of Heat Pump Radiator Calculation

Details: Proper calculation ensures adequate heating capacity when using lower temperature heat pump systems compared to traditional boilers.

4. Using the Calculator

Tips: Enter the radiator's nominal output (at ΔT=50K) and the actual temperature difference (ΔT) expected during heat pump operation.

5. Frequently Asked Questions (FAQ)

Q1: Why is the exponent 1.3 used in the formula?
A: The 1.3 exponent accounts for the non-linear relationship between temperature difference and heat output in radiators.

Q2: What's a typical ΔT for heat pump systems?
A: Heat pumps typically operate at ΔT of 30-45K compared to 50K for traditional boilers.

Q3: How do I find the nominal output?
A: The nominal output (at ΔT=50K) is usually specified in radiator technical documentation.

Q4: Does this work for all radiator types?
A: The formula works best for standard panel radiators. Fan-assisted radiators may have different characteristics.

Q5: Should I oversize radiators for heat pumps?
A: Yes, radiators for heat pump systems are typically 20-30% larger than for boiler systems due to lower operating temperatures.

Radiator Calculator Heat Pump© - All Rights Reserved 2025