|
| |
I'm often asked, "How much does it cost to heat a swimming pool ?" From
my own measurements and experience I've put together the following table, which
I hope will be something of a guide.
Essentially it depends on how hot you want your water, and how warm
the air is.... etc.
|
Cost Approximations to Maintain 30° C in Pool |
|
|
|
|
Most Effective Heat Pump |
Ordinary Electric Heater |
|
|
Max Day Air Temp C° |
Cost Per Day pence |
Cost per week £ |
Cost per week £ |
|
|
30 (86° F) |
13 |
0.91 |
4.55 |
|
|
25 (77° F) |
19 |
1.33 |
5.98 |
|
|
20 (68° F) |
30 |
2.10 |
8.40 |
|
|
15 (59°F) |
50 |
3.50 |
12.25 |
|
|
10 (50° F) |
95 |
6.65 |
19.95 |
|
|
5 (41°F) |
130 |
9.10 |
25.02 |
|
|
0 (32° F) |
160 |
11.20 |
28.00 |
|
|
|
|
|
|
|
|
Assumptions |
|
|
|
|
|
12 ft diameter above ground pool, 3.5 feet deep, 11,200 litres,
3,000 gallons |
|
|
2 cm thick transparent encapsulated air insulation on the
outside of the pool |
|
|
400 micron transparent surface cover in Summer, 14mm foam cover
in Winter |
|
|
Enclosure covers entire pool when temperature is below 10°C |
|
|
|
All-year-round heat pump achieving COP of 5 at 30°C declining
to COP of 2.5 at 0°C |
|
|
n.b. most heat pumps on the market are not effective below 10°C |
|
|
(Calorex produce extended seasson and all-year-round heat pump
models.) |
|
|
|
|
|
|
|
|
