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AC_Hacker · 03-12-12, 12:05 PM

Using a vapor-compression machine to move heat from one place to another is very interesting to me because it leverages the principles of low-exergy heating & cooling. Finding ways to reduce still further the exergy of an already low-exergy process is a challenging and excellent endeavor.

From the standpoint of low-exergy heating & cooling, the idea of a greatly over-sized condenser is very interesting to me, if the surface area of a HX is greatly increased, the temperature of the working fluid doesn't have to be as high (lower exergy) for a given amount of heat to be moved, so efficiency should follow.

* * *

I have been enjoying the previous exchange, but only to the extent that it improves my understanding of the principles behind vapor-compression machines, and how to increase their efficiency.

So, from that point of view, the exchange has been only partially useful. Don't get me wrong, hot air is a great thing, but HVAC equipment seems to make much better use of it.

I think that the proof is in the pudding, and BradC has a major batch of pudding he is cooking up and I, for one, am very interested to see how it turns out.

-AC_Hacker

03-12-12, 12:05 PM	#1185
AC_Hacker Supreme EcoRenovator Join Date: Mar 2009 Location: Portland, OR Posts: 4,004 Thanks: 303 Thanked 723 Times in 534 Posts	Using a vapor-compression machine to move heat from one place to another is very interesting to me because it leverages the principles of low-exergy heating & cooling. Finding ways to reduce still further the exergy of an already low-exergy process is a challenging and excellent endeavor. From the standpoint of low-exergy heating & cooling, the idea of a greatly over-sized condenser is very interesting to me, if the surface area of a HX is greatly increased, the temperature of the working fluid doesn't have to be as high (lower exergy) for a given amount of heat to be moved, so efficiency should follow. * * * I have been enjoying the previous exchange, but only to the extent that it improves my understanding of the principles behind vapor-compression machines, and how to increase their efficiency. So, from that point of view, the exchange has been only partially useful. Don't get me wrong, hot air is a great thing, but HVAC equipment seems to make much better use of it. I think that the proof is in the pudding, and BradC has a major batch of pudding he is cooking up and I, for one, am very interested to see how it turns out. -AC_Hacker __________________ I'm not an HVAC technician. In fact, I'm barely even a hacker...