Aircon Compressor Feeding a Pool Heat Pump Hot Air?

donbot on 24/09/2024 - 12:38

I'm fitting out my shed. Is my logic right here with regard to heat pumps?

  1. Heat Pump for Pool heating is installed inside the shed. It will be vented through the shed wall with a sizeable vent as it just spews out cold air.

  2. Split System - I'm going to install a split system for a small room I'm building inside the shed, again with the compressor inside the shed. But rather than venting it outside, could I not direct the hot air being discharged by the Aircon Compressor to the back of the Pool Heat Pump?

Eg. For Summer:
Aircon compressor pushes out hot air (as it is cooling the shed office), which that hot air output is routed into the back of the pool heat pump as it feeds on hot air, which then pushes out cold air, which is vented through a louvre in the side of the shed wall?

In winter, am I right that the aircon compressor will push out 'cold air' as I use it in reverse cycle - meaning I should really vent this cold air outside the shed as it will end up chilling the entire shed down, rendering the reverse cycle pretty much useless as it feeds on really cold air?

It will be a comparatively tiny aircon (2.5kw) and its a 24kw Pool Heater Heat Pump. Shed is 13x6m, insulated roof and westerly facing walls and has two whirly birds installed to ensure plenty of airflow - even when both front and rear roller doors are closed.

More concerned with maximising the efficiency of the Pool Heat Pump (surely feeding it warmer air is more beneficial?) whilst the aircon is on rather than the efficiency of the aircon.

Home & Garden Air Compressor

Comments

  • JIMB0 on 24/09/2024 - 12:55
    +1

    This makes no sense. Why would you be heating the pool in summer? Also if its cold enough to be heating the pool I doubt you'd be cooling the room. You want to transfer heat from a room to a pool. I can't think of a situation where you want to cool the room and heat pool at the same time.

    • lgacb08 on 24/09/2024 - 13:01

      Because water takes ages to heat through ambient, it will never get to 30 even in the middle of summer unless you live in the tropics.

      • ricadam on 24/09/2024 - 13:42
        +1

        Why would you want a 30 degree pool in the Summer?!

        • Archi on 24/09/2024 - 13:54

          because it feels damn good.

          • lunchbox99 on 24/09/2024 - 14:50
            +1

            @Archi: If you want a warm pool just go to the local public pool after the school kids visit.

        • JIMB0 on 24/09/2024 - 15:43

          May as well put a roof over it as well so that when it's raining you won't get wet going for a swim.

      • Nugs on 24/09/2024 - 19:34

        "never get to 30 even in the middle of summer"
        Ours does even with heating off during summer due partially to having the cover on.
        Often need to remove cover over night to reduce temps before the next day.
        We are in SA, certainly not the tropics
        .

    • donbot on 24/09/2024 - 16:03
      +1

      Pool ambient remains too low without heating in Vic. No point heating it in winter as cosy prohibitive and no-one likes swimming in winter. In summer, different story. Bring it up to high 20s and it's delightful and kids don't turn blue from a frozen pool.

  • freefall101 on 24/09/2024 - 13:17

    If there's no insulation between the shed and the shed office then putting a split system in will be pointless, it'll only be any good if you're directly in line with the airflow, otherwise it'll generally do nothing. Either it's sealed from the shed and thus holds a different temp, or it isn't (and it sounds like it isn't, if cooling the whole shed down is a bad thing).

    Pointing the aircon compressor at the pool heater heat pump would be like pissing in the wind, it's not going to make enough of a temperature differential to do anything meaningful.

  • donbot on 24/09/2024 - 16:02

    Thanks for the reply..there will be insulation (floor, ceiling, walls) for the internal shed room, which is in addition to the wool blanket under the roof sheets, and the sarking underneath the wall sheets, so I think the aircon will stand a chance. It's a small room, so would expect it should work without issue as just like heating/cooling an internal room. It will be sealed from the rest of the shed. Picture a room in a shed.

    Re pissing in the wind - perhaps your right..more just considering if the pool heat pump would benefit. But if it doesn't - I'll just mount it and vent it to outside the shed like the pool pump. Fits in better that way anyway.

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