re:metering common heating system | <– Date –> <– Thread –> |
From: Tom Lent (tlentigc.apc.org) | |
Date: Tue, 22 Oct 1996 17:28:48 -0500 |
FLOW METER ACCURACY: We probably will be using a $90 Spectrum single jet water meter by Metron Technology of Boulder CO (303-449-8300) that is tested at +or- 1.5% accuracy starting at very low flow (1/15 gpm for the 5/8" model). Shold be plenty of accuracy for this purpose. RELATIONSHIP BETWEEN FLOWS AND HEAT: Tom from Winslow raises an important point glossed over in my quick description (so much for getting off the internet fast the other day). The relationship between the amount of heat you actually use (so the amount of electric or gas use you should be responsible for) and the amount of water that flows is not as straighforward as it might at first seem. The heat flow will be a function of both the amount of water pumped through the system AND the temperature that the water drops as it goes through the radiant floor system or fan coils or whatever you are using to distribute it. If one house has longer lengths of piping in its radiant floor than another, or is set up so it flows at a faster rate, or has a different system (such as fan coils instead of radiant floor), the heat used by the house for every gallon of water through the system will be different. We will start with a factor based on the differences in design between the two units systems than do some calibrating when it is in and running. Stay tuned and wish us luck. My hats off to the commmunities that are courageous enough to be able to bypass metering and just split their bills. Tom Lent - Berkeley Cohousing **************************************************************************** Tom Lent * 2220 Sacramento St * Berkeley, CA 94702-1907 email: tlent [at] igc.org * phone: 510/845-5243 ****************************************************************************
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re: metering common heating system Tom Lent, October 18 1996
- re: metering common heating system Deborah Behrens, October 18 1996
- Re: metering common heating system TomMOENCH, October 21 1996
- Re: Metering Common Heating System Joani Blank, October 21 1996
- re:metering common heating system Tom Lent, October 22 1996
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