Swimming pool calculator

Swimming Pool Heat Pump Sizing

Swimming Pool Heat Pump Sizing Calculator

1. Pool Heating Capacity (without heat loss)

Pool Length (m):

Measured in meters (m)

Pool Width (m):

Measured in meters (m)

Pool Depth (m):

Measured in meters (m)

Initial Water Temperature (°C):

Starting temperature of the pool water in °C

Final Water Temperature (°C):

Standard pool temp: 28°C, Max advisable: 30°C

Heating Time (hours):

Time in hours to heat the pool to desired temperature

2. Evaporation Heat Loss

Relative Humidity (%):

Ambient relative humidity

Wind Speed (m/s):

Typical indoor = 0.5 m/s; outdoor = 2 m/s

3. Replenishment Heat Requirement

Is the pool Indoor or Outdoor?

Affects replenishment percentage and flow calculation

4. Circulating Water Volume

Circulation Period (T) in hours:

Total hours for one complete water circulation cycle

Qb formula reference: Qb = α × qb × y × (tr − tb) / t
where α = 4.1868 kJ/kcal, y = 1 kg/L, t = 12 h (fixed),
tr = Final Pool Temp, tb = Supplementary Water Temp, qb = Daily Replenishment Volume
qb = Volume × (whole number) × replenishment meter (e.g., 3 for indoor, 5 for outdoor)