Home Office Projects Series: Air conditioner setup

Re:Home Office Projects Series: Air conditioner setup by m463 on Friday September 04, 2020 @06:43AM (#24373737)

> > condo in Minneapolis

> This needs some real data.

Minnesota Heating Degree Days[1]: ~ 500

Minnesota Cooling Degree Days[2]: ~ 8,000-10,000

I suspect heat pumps might reach practical limits with cold temperatures.

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Re:Home Office Projects Series: Air conditioner setup by amluto on Friday September 04, 2020 @08:33PM (#24380378)

I wonder if anyone has tried to commercialize a device that burns gas for combined heat and power and uses that power to directly drive a heat pump.

Alternatively, ground source heat pumps work decently well even in very cold places, but the installation costs can be high.

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Re:Home Office Projects Series: Air conditioner setup by m463 on Saturday September 05, 2020 @08:54AM (#24383176)

> commercialize a device

I think a lot of (utility scale) generators do all kinds of fancy things like waste heat recovery.

It would be kind of cool to see the same thing trickle down to your home.

Tesla kind of does this in reverse with the model y - it spends electricity parsimoniously, and uses a fancy heat pump to capture or dump heat.

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Re:Home Office Projects Series: Air conditioner setup by asdfasgasdgasdg on Friday September 04, 2020 @10:50AM (#24375406)

You reversed the numbers from your cite. Minnesota has much more heating degree days than cooling.

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Re:Home Office Projects Series: Air conditioner setup by m463 on Friday September 04, 2020 @11:06AM (#24375585)

ugh. and now it's too late to fix the post. thank you!

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