General > General Technical Chat
This doesn't make sense - NYT article about a solar installation in the US
james_s:
--- Quote from: Marco on November 02, 2021, 08:08:56 pm ---Isn't everything big over there? American airconditioner heatpumps seem to be the size of an IBC to begin with. Though I agree, if you can't just hide an insulated IBC in a huge yard it will bring considerable costs to bury it. Heatpumps with significant storage make more sense for new buildings and renovations.
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They never used to be, but efficiency mandates combined with the move to R410a refrigerant resulted in MUCH larger units. Traditionally they get the efficiency up by increasing the ratio of coil size to compressor capacity, so a modern 2 ton condensing unit is often bigger than say a 30 year old 4 ton unit. Only recently they've started using things like inverter driven compressors to get the size down, and the Japanese tend to make those narrow units that sit vertically against a wall, those are getting somewhat more common here. Even the biggest units are still smaller than a huge water tank though.
NiHaoMike:
--- Quote from: rstofer on November 02, 2021, 02:42:52 am ---In terms of the HVAC, the utility could look at the demand on the revenue meter and expect a reduction from not running the compressor. If they didn't see the reduction, they could make a pretty good guess.
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And what if you wired it to turn off some other large load like a pool pump, dryer, or water heater? (That's assuming there isn't the option to simply get the switch installed on that device in the first place.)
james_s:
--- Quote from: NiHaoMike on November 03, 2021, 12:44:26 am ---And what if you wired it to turn off some other large load like a pool pump, dryer, or water heater? (That's assuming there isn't the option to simply get the switch installed on that device in the first place.)
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Well it would accomplish the same goal wouldn't it? Turning off a large load during times of high demand reduces the demand, doesn't matter whether it's the AC compressor or the clothes dryer.
Bassman59:
--- Quote from: Marco on November 02, 2021, 08:08:56 pm ---
--- Quote from: Bassman59 on November 01, 2021, 08:08:55 pm ---Where am I going to store this water?
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Isn't everything big over there? American airconditioner heatpumps seem to be the size of an IBC to begin with. Though I agree, if you can't just hide an insulated IBC in a huge yard it will bring considerable costs to bury it. Heatpumps with significant storage make more sense for new buildings and renovations.
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OK, some details. I live in Tucson, so water is at a premium here.
And yes, considerable costs will be incurred to dig out the yard and install a tank large enough for this energy-storage purchase. (I do want to install an above-ground rain-water harvesting system.)
Also, define "big." The non-wealthy in this country don't have super large yards. I know I don't have a large yard.
Marco:
--- Quote from: Bassman59 on November 03, 2021, 07:14:06 pm ---OK, some details. I live in Tucson, so water is at a premium here.
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That's still only a couple bucks of water for the IBC. Getting it filled with RO water is probably the same cost in Tucson as anywhere else.
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