Pool heat pump

Just as an example, this is an Inverter Heat-Pump, that consumes 2.18kw, and can heat up to 40,000L.

Would be fairly "cheap" to run in the day from excess Solar

itssolar.co.za

12kW ITS Inverter Pool Heat Pump

Swim all year round with our super efficient inverter pool heat pumps For Pool Sizes up to 40 000 litres (Heat Pump Calculator). Delivers up to 2 x the efficiency of standard pool heat pumps. An investment that adds value to your home. Wifi module included for smartphone control. Why...
itssolar.co.za itssolar.co.za

1695891886952.png


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This is Alliance, not as power hungry as I thought, highlighted unit can warm upto 70KL, with a pool cover:

1695893499438.png
 
Some basic science math:

10 000L x 4200J/l x 10 degrees = 420MJ = 116kWh to heat 10kl by 10 degrees!
20 000L x 4200J/l x 10 degrees = 420MJ = 232kWh to heat 20kl by 10 degrees!
 
Sensorei said:
It's much cheaper to use solar heating for a pool. Unless you really need the water over ±27 degrees, in which case you'll be spending R4000+ a month to heat the pool with a heat pump.
Click to expand...
Solar heating depends on the distance of the pool to the roof. If it's far, you may also need a more powerful pump. Then there's the issue of the landscape, and whether it's possible to dig between the house and the pool to lay the pipes.

The heating panels also take up valuable roof space, which you could rather use for more solar PV panels if you have a system installed. Heat pump is pretty energy efficient, and you won't be running it all day...
 
aomar296 said:
Hi all

I have a 5 x 2.5m pool that I'm looking to heat up.

I'm currently looking at a 5kw heat pump. Would this be sufficient?

If so, I'm looking for info on how long would it take to heat up. I'll probably only use it once or twice a month so not looking to run it all the time. What would be the electricity usage in units per hour as well?

Another question, which smart switch can I use on my DB so I can switch on and off via WiFi.

Thanks
Click to expand...
itssolar.co.za

Pool Heating Calculator | ITS Solar

Notes: A pool thermal blanket must be used. Pools without a thermal blanket on, or pools that will be uncovered for most of the day, could require heat pumps more than double the size calculated in the above. The higher the required pool temperature is above the ambient temperature and the more...
itssolar.co.za itssolar.co.za
 
DrJohnZoidberg said:
I'm considering this too at some point, have a small pool so wouldn't need a big unit. Currently have the cheap solar water heating panels, the ones that just push the water through lots of pipe.

The problem I have is that the pipe run (the feeds from the pump to the panels) is so long that these panels hardly help at all and are utterly useless if it's not a hot sunny day at which point I may as well not even have them working.

It could be a nice thing to use excess PV for in the spring and late autumn months.
Click to expand...
Quantity matters

With sun command panels they recommend at least 50% coverage of pool surface area with the panels that is individual little pipes100% coverage less than that results will be crappy

And naturally the pump has to run just about all day

Often the setup is wrong ,ie you have to push in on one corner and exit diagonal corner often they do the setup push in on the one corner and out the corner just above it

And you lose effect water takes shortest path

And naturally someone has to switch it off the moment the weather turns or you radiate the heat at the panels having a cbi astute helps if the weather turned

And then having a cover makes all the difference , plus helps heating too

I have a small pool 12k Litres and lots of panels and could actually heat it to jacuzzi temp with 2-3 sunny days in a row had 4 x 3m sun command panels and mpi cover
 
Mike Hoxbig said:
Solar heating depends on the distance of the pool to the roof. If it's far, you may also need a more powerful pump. Then there's the issue of the landscape, and whether it's possible to dig between the house and the pool to lay the pipes.

The heating panels also take up valuable roof space, which you could rather use for more solar PV panels if you have a system installed. Heat pump is pretty energy efficient, and you won't be running it all day...
Click to expand...
The distance isn't really a big deal

ie like walking and suddenly you encounter an up hill

The same applies here the distance you go up is where distance counts

If you have a small pump removing the vacuum breaker helps as the water going down actually helps syphoning the water up

So it will be a slow start and once the panels are full even a small pump manages i had a 0.45kw pump actually handle a normal single storey town house

If double storey you gotta go bigger , but that adds head aches if the height is too much the back pressure on the filter means you gotta backwash and rinse regularly if you don't want popped filter

So many storeys just go heat pump

And like you said valuable roof space is a thing
 
The_MAC said:
Just as an example, this is an Inverter Heat-Pump, that consumes 2.18kw, and can heat up to 40,000L.

Would be fairly "cheap" to run in the day from excess Solar

itssolar.co.za

12kW ITS Inverter Pool Heat Pump

Swim all year round with our super efficient inverter pool heat pumps For Pool Sizes up to 40 000 litres (Heat Pump Calculator). Delivers up to 2 x the efficiency of standard pool heat pumps. An investment that adds value to your home. Wifi module included for smartphone control. Why...
itssolar.co.za itssolar.co.za

View attachment 1593974


View attachment 1593976
Click to expand...
And with the inverter types the input varies the amps the line just above the kw ie if it is close to temp the input drops
 
Gaz{M} said:
Some basic science math:

10 000L x 4200J/l x 10 degrees = 420MJ = 116kWh to heat 10kl by 10 degrees!
20 000L x 4200J/l x 10 degrees = 420MJ = 232kWh to heat 20kl by 10 degrees!
Click to expand...
Yea but often the heat pumps gets a higher factor ie you could get up to 5times the input powernin heating effect

So even though you gain 116kwh worth of heating the consumption on the input side you may need as little as 20% of that

ie the its heat pump example above the 12kw has a COP value of up to 12.5 what it averages out as depends on weather etc
 
The_MAC said:
Yeah, and I might only need an extra 2-3 degrees, not 10
Click to expand...
Yea 12hrs with a properly sized unit will you get you there
They normally size the units to climb like 5c in 24hrs

Heck even a pool cover that lies on top of water will do that


If you have a flat garage roof some irrigation pipe is really cheap

I Welded some double spider webs with 6mm steel and then rolled some 15mm lowest class irrigation black pipe between them

It isn't pretty but nobody see it
 
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