ᐅ Extending a Ground Source Heat Pump System to Heat a Small Indoor Pool
Created on: 19 Mar 2023 21:24
J
jx7
Hello everyone,
Would it be feasible to connect an additional heating circuit for a small indoor pool (9 sqm (97 sq ft) surface area) to a geothermal heat pump (Ecoforest C3 3-12 kW HTR EH with 2x 99 m (325 ft) boreholes)?
The capacity of the heat pump should actually be sufficient, both considering the ground loop (2x 99 m (325 ft)) and the heat pump itself (12 kW):
- It is not an outdoor pool that cools down significantly at night.
- The initial heating of the pool could take place during the summer.
- The pool’s heat is not lost but remains inside the house.
- If the capacity is not enough during the coldest winter months to heat both the house and the pool simultaneously, it would not be a problem; the pool simply would not be heated during that time.
- In an emergency, the pool’s internal heater (4 kW electric heater) could also be used.
Here are all the relevant details:
Currently, 190 sqm (2045 sq ft) of underfloor heating and the domestic hot water for 5 people run through the geothermal heat pump.
The house has nearly KfW-55-standard:
Final energy demand: 21.4 kWh/(m²·a)
Primary energy demand: 51.4 kWh/(m²·a)
Thermal performance of the building envelope: 0.25 W/(m²·K)
Room dimensions:
5.08 m x 4.65 m x 2.31 m (16.7 ft x 15.3 ft x 7.6 ft)
Pool size:
246 cm (width) x 460 cm (length) – external (8.1 ft x 15.1 ft)
213 cm (width) x 427 cm (length) – internal (7.0 ft x 14.0 ft)
Desired water temperature: 28°C (82°F)
The basement is a waterproof concrete shell with excellent insulation. The house was built in 2016 and nearly meets KfW-55-standard.
I would appreciate knowledgeable answers and/or experiences from homeowners!
Would it be feasible to connect an additional heating circuit for a small indoor pool (9 sqm (97 sq ft) surface area) to a geothermal heat pump (Ecoforest C3 3-12 kW HTR EH with 2x 99 m (325 ft) boreholes)?
The capacity of the heat pump should actually be sufficient, both considering the ground loop (2x 99 m (325 ft)) and the heat pump itself (12 kW):
- It is not an outdoor pool that cools down significantly at night.
- The initial heating of the pool could take place during the summer.
- The pool’s heat is not lost but remains inside the house.
- If the capacity is not enough during the coldest winter months to heat both the house and the pool simultaneously, it would not be a problem; the pool simply would not be heated during that time.
- In an emergency, the pool’s internal heater (4 kW electric heater) could also be used.
Here are all the relevant details:
Currently, 190 sqm (2045 sq ft) of underfloor heating and the domestic hot water for 5 people run through the geothermal heat pump.
The house has nearly KfW-55-standard:
Final energy demand: 21.4 kWh/(m²·a)
Primary energy demand: 51.4 kWh/(m²·a)
Thermal performance of the building envelope: 0.25 W/(m²·K)
Room dimensions:
5.08 m x 4.65 m x 2.31 m (16.7 ft x 15.3 ft x 7.6 ft)
Pool size:
246 cm (width) x 460 cm (length) – external (8.1 ft x 15.1 ft)
213 cm (width) x 427 cm (length) – internal (7.0 ft x 14.0 ft)
Desired water temperature: 28°C (82°F)
The basement is a waterproof concrete shell with excellent insulation. The house was built in 2016 and nearly meets KfW-55-standard.
I would appreciate knowledgeable answers and/or experiences from homeowners!
taschenonkel schrieb:
I’m quite confident that you’ll get better and more cost-effective results with a separate inverter heat pump costing about 1000 EUR and a smaller borehole outside, rather than having a installer modify your existing home heating system. I don’t know the cost of a priority switching system, but it sounds expensive 🙂I will suggest both options to the installer and ask for advice.