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Search: Posts Made By: MN Renovator
Forum: Solar Heating 03-21-12, 07:53 PM
Replies: 16
Views: 19,259
Posted By MN Renovator
It sounds like you've thought the design through...

It sounds like you've thought the design through well enough to where it will be far superior to any greenhouse that is around here. The ones around here in commercial plant nurseries are all a...
Forum: Solar Heating 03-21-12, 02:50 AM
Replies: 16
Views: 19,259
Posted By MN Renovator
Ahh, I just read back that you are building a...

Ahh, I just read back that you are building a greenhouse, which accounts for all of the heat loss. Glass is unfortunately very lossy and I don't know of any greenhouses that are heated in the winter...
Forum: Solar Heating 03-21-12, 02:44 AM
Replies: 16
Views: 19,259
Posted By MN Renovator
You still don't understand. No, watts are NOT...

You still don't understand. No, watts are NOT tied to seconds. Watts are not tied to time AT ALL!! If a wall is losing heat at a specific rate of 500 watts based on your calculation at a specific...
Forum: Solar Heating 03-21-12, 01:50 AM
Replies: 16
Views: 19,259
Posted By MN Renovator
"Power is a rate, but watts can also be a...

"Power is a rate, but watts can also be a quantity. A machine might use up 100 watts in one hour, or in one minute. Knowing how many watts are involved doesn't tell you how much time it took to use...
Forum: Solar Heating 03-20-12, 11:24 PM
Replies: 16
Views: 19,259
Posted By MN Renovator
I think you are mixing up your units. kW or...

I think you are mixing up your units. kW or kilowatts is a figure of power, like my refrigerator, for example, uses 150 watts while its running. If it runs for 11.62 hours out of a 24 hour day like...
Forum: Solar Heating 03-20-12, 04:20 PM
Replies: 16
Views: 19,259
Posted By MN Renovator
1 MBtu = 1,000 BTU 1 Therm = 100,000 BTU 1...

1 MBtu = 1,000 BTU
1 Therm = 100,000 BTU
1 BTU = 0.293071 Wh
1 watt = 3.41214 BTU/h (or 1 wh is about 3.41214BTU)
1 BTU = 1 055.05585 joules (most people round this off and I've seen it vary a...
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