EcoRenovator - View Single Post

AC_Hacker · 02-24-17, 12:16 PM

This might move you out of your comfort zone, but there is/was an initiative called LowEx that tried "Low Exergy" heating and cooling.

Here's a link to one of their reports:

https://www1.ethz.ch/gt.arch/news/Lo...atPump_Meggers

and the following diagram is in it:

Moral of the story: "The Lower the lift, the greater the COP"

Although it's not stated, to work with LowEx, Heat Exchangers need to be very efficient because the delta-T is low. So, all the many techniques that would raise the efficiency of a HX, like larger than usual area and higher than usual fluid velocities would need to be employed.

-AC

02-24-17, 12:16 PM	#24
AC_Hacker Supreme EcoRenovator Join Date: Mar 2009 Location: Portland, OR Posts: 4,004 Thanks: 303 Thanked 723 Times in 534 Posts	This might move you out of your comfort zone, but there is/was an initiative called LowEx that tried "Low Exergy" heating and cooling. Here's a link to one of their reports: https://www1.ethz.ch/gt.arch/news/Lo...atPump_Meggers and the following diagram is in it: Moral of the story: "The Lower the lift, the greater the COP" Although it's not stated, to work with LowEx, Heat Exchangers need to be very efficient because the delta-T is low. So, all the many techniques that would raise the efficiency of a HX, like larger than usual area and higher than usual fluid velocities would need to be employed. -AC Attached Images __________________ I'm not an HVAC technician. In fact, I'm barely even a hacker...