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BradC · 05-11-15, 02:21 AM

Most of you have seen these before.

Brazing good. Threads bad.

With the liquid line sitting a connectors radius from the bottom of the HX I get a nice pool of liquid refrigerant in the bottom of the HX to get some subcooling. As the HX holds 18L (or about 8.8KG of propane I don't need a receiver either.

<edit> Here is an OpenOffice spreadsheet I posted in 2012 that automates the calculations. The most complex one is the LMTD, but it makes sizing a heat exchanger pretty easy. I've used it quite a bit in recent times, but I'd forgotten I broke it out into a separate spreadsheet and put it up for critique.

http://www.fnarfbargle.com/private/1...y_HX_Calcs.ods

05-11-15, 02:21 AM	#25
BradC Apprentice EcoRenovator Join Date: Dec 2010 Location: Western Australia Posts: 148 Thanks: 1 Thanked 48 Times in 34 Posts	Most of you have seen these before. Brazing good. Threads bad. With the liquid line sitting a connectors radius from the bottom of the HX I get a nice pool of liquid refrigerant in the bottom of the HX to get some subcooling. As the HX holds 18L (or about 8.8KG of propane I don't need a receiver either. <edit> Here is an OpenOffice spreadsheet I posted in 2012 that automates the calculations. The most complex one is the LMTD, but it makes sizing a heat exchanger pretty easy. I've used it quite a bit in recent times, but I'd forgotten I broke it out into a separate spreadsheet and put it up for critique. http://www.fnarfbargle.com/private/1...y_HX_Calcs.ods Last edited by BradC; 05-11-15 at 03:47 AM..