Heat Pump BTU Formula:
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Definition: This calculator estimates the heat energy (BTU) required for pool heat pumps, specifically adjusted for Australian climate conditions.
Purpose: Helps pool owners and professionals determine the appropriate heat pump size for maintaining comfortable pool temperatures.
The calculator uses the formula:
Where:
Explanation: The formula calculates both sensible heat (temperature change) and latent heat (evaporation/phase change).
Details: Accurate BTU calculation ensures energy-efficient operation, proper equipment sizing, and optimal pool temperature maintenance.
Tips: Enter water mass in pounds, specific heat capacity (default 1.0 for water), desired temperature difference, and any additional latent heat requirements.
Q1: Why is this calculator specific to Australia?
A: It accounts for typical Australian climate conditions including higher evaporation rates and common temperature differentials.
Q2: How do I calculate water mass?
A: Multiply pool volume (gallons) by 8.33 lb/gallon (for fresh water) or 8.55 lb/gallon (for salt water).
Q3: What's a typical temperature difference for pools?
A: Usually 10-20°F difference between desired pool temp and average ambient temperature.
Q4: When would I include latent heat?
A: Include latent heat (typically 1000-1500 BTU/hr) if calculating for continuous operation with evaporation.
Q5: How does this relate to heat pump sizing?
A: Divide total BTU by 24 hours to get BTU/hr rating needed for your heat pump.