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Wirelessly Monitoring Temperature in Multiple Rooms for an Energy Efficient Home

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agibson0307
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re: Wirelessly Monitoring Temperature in Multiple Rooms for an Energy Efficient Home
agibson0307   7/2/2009 4:56:18 PM
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TechPro
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re: Wirelessly Monitoring Temperature in Multiple Rooms for an Energy Efficient Home
TechPro   6/25/2009 4:14:07 PM
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Opening and closing air duct flaps is not a viable solution. Since the AC evaporator fan speed is constant, closing one duct forces more air into other rooms, which has two consequenses. One is a higher air speed which is noisier, and second is the other rooms become colder which soon results in the need to adjust those ducts as well. The solution that is needed is a system designed from the ground up with a variable speed evaporator coil fan in addition to ducts that have a variable adjustment. Trying to retrofit old cooling technology with new controls is like trying to improve transportation by placing electrodes on horses.

Barack
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re: Wirelessly Monitoring Temperature in Multiple Rooms for an Energy Efficient Home
Barack   6/25/2009 2:55:25 PM
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Okay, now you have the temperature (and possibly humidity) of all these rooms. Now what ? Montioring is all very well, but you should do something with the results (see the article "Domestic intercepts - NSA vs FISA"). You could average them and set the HVAC cooling/heating appropriately - but isn't that what you do with one (wired) control anyway ? Ideally we would like to vary the opening of air duct flaps to control the HVAC air flow. Where is this technology ?

BwillieZ
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re: Wirelessly Monitoring Temperature in Multiple Rooms for an Energy Efficient Home
BwillieZ   6/25/2009 2:00:03 PM
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You could can the batteries and use energy harvesting. Check out the TI Solar Energy Harvesting Kit - EZ430-RF2500-SEH. You can power it from light and not have to replace all those batteries!

Jacomo
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re: Wirelessly Monitoring Temperature in Multiple Rooms for an Energy Efficient Home
Jacomo   6/25/2009 12:34:26 PM
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The solution we seek is not in the monitoring but in what you do to adjust the temp to where you want it.

w1pf
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re: Wirelessly Monitoring Temperature in Multiple Rooms for an Energy Efficient Home
w1pf   6/25/2009 10:40:02 AM
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I have one of these kits, and I tried this yesterday before I saw this article... I'm evaluating such chips to build a proof-of-concept for a monitoring product. Using the demo app on my laptop, I can indeed sense the temperature at the remote - as long as the remote is in the same room. No dice if the remote is in another room. Given that, it isn't clear to me one could actually (reliably) use the system described in this article.

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