The Homemade Heat Pump Manifesto

Xringer · 08-18-11, 10:55 PM

Thermal Properties of Metals, Conductivity, Thermal Expansion, Specific Heat - Engineers Edge

I was looking at the heat conductivity of Aluminum,
and it seems like a copper-to-copper HX would give a lot more heat transfer.
My old Solar hotwater system used a copper-to-copper double-walled HX.
The problem was the clean-out access started leaking too much.

But, I still like the high pressure (and BTU) rating of this one..
20 Plate Cu Brazed Heat Exchanger SS304 1" MPT B3-32 | eBay
For a mere $175USD, that's one sweet HX..

It seems like a good choice for my old Sanyo unit, and it's small enough to easily package up inside a well insulated box..

Cheers,
Rich

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08-18-11, 10:55 PM	#11
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,919 Thanks: 115 Thanked 250 Times in 230 Posts	Thermal Properties of Metals, Conductivity, Thermal Expansion, Specific Heat - Engineers Edge I was looking at the heat conductivity of Aluminum, and it seems like a copper-to-copper HX would give a lot more heat transfer. My old Solar hotwater system used a copper-to-copper double-walled HX. The problem was the clean-out access started leaking too much. But, I still like the high pressure (and BTU) rating of this one.. 20 Plate Cu Brazed Heat Exchanger SS304 1" MPT B3-32 \| eBay For a mere $175USD, that's one sweet HX.. It seems like a good choice for my old Sanyo unit, and it's small enough to easily package up inside a well insulated box.. Cheers, Rich