EcoRenovator - View Single Post - Inverter ASHP to WSHP conversion (on a boat), design&discussion

jeff5may · 02-21-14, 05:32 PM

I found a grossly oversized Hx here:

copper refrigerant pipe: $113
TURBOTEC | COILS, STEAM & WATER | 3-1/2 TON COAX COIL | Surplus City Liquidators

cupronickel refrigerant pipe: $208
TURBOTEC | COILS, STEAM & WATER | 4 TON COAX COIL | Surplus City Liquidators

Both are rated at 450 PSI working pressure (burst pressure much higher). Your water-source setup should run at much lower working pressure in cooling mode (450 PSI = 125 degF saturation temp, 100 degF Tsat = 317 PSI). In heating mode, pressure is not an issue (freeze-up is related to pump sizing).

OR

You could look into China and have one custom built for cheap. Some suppliers will pretty much design and build a single one-off part for you, given pertinent performance specs. Not very expensive, either.

http://www.alibaba.com/product-gs/15...Exchanger.html

02-21-14, 05:32 PM	#21
jeff5may Supreme EcoRenovator Join Date: Jan 2010 Location: elizabethtown, ky, USA Posts: 2,428 Thanks: 431 Thanked 619 Times in 517 Posts	I found a grossly oversized Hx here: copper refrigerant pipe: $113 TURBOTEC \| COILS, STEAM & WATER \| 3-1/2 TON COAX COIL \| Surplus City Liquidators cupronickel refrigerant pipe: $208 TURBOTEC \| COILS, STEAM & WATER \| 4 TON COAX COIL \| Surplus City Liquidators Both are rated at 450 PSI working pressure (burst pressure much higher). Your water-source setup should run at much lower working pressure in cooling mode (450 PSI = 125 degF saturation temp, 100 degF Tsat = 317 PSI). In heating mode, pressure is not an issue (freeze-up is related to pump sizing). OR You could look into China and have one custom built for cheap. Some suppliers will pretty much design and build a single one-off part for you, given pertinent performance specs. Not very expensive, either. http://www.alibaba.com/product-gs/15...Exchanger.html Last edited by jeff5may; 02-22-14 at 06:36 AM..