Thermal Numeracy: Difference between revisions
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Thermal numeracy refers to understanding the quantities of heat produced, emitted, and transferred in various physical phenomena. | Thermal numeracy refers to understanding the quantities of heat produced, emitted, and transferred in various physical phenomena. | ||
*BTU - 1 lb water raise by 1 degree F | |||
*Fireplace heat loss from chimney can be 80-90% - [https://indianamichiganpower.com/save/eNewsletter/ViewStory.aspx?StoryID=178] | *Fireplace heat loss from chimney can be 80-90% - [https://indianamichiganpower.com/save/eNewsletter/ViewStory.aspx?StoryID=178] | ||
*At high temperatures, temperature in degrees F is about 2x that of degrees C. Specifically, ~9/5 times. | *At high temperatures, temperature in degrees F is about 2x that of degrees C. Specifically, ~9/5 times. | ||
Revision as of 04:36, 2 October 2015
Thermal numeracy refers to understanding the quantities of heat produced, emitted, and transferred in various physical phenomena.
- BTU - 1 lb water raise by 1 degree F
- Fireplace heat loss from chimney can be 80-90% - [1]
- At high temperatures, temperature in degrees F is about 2x that of degrees C. Specifically, ~9/5 times.
- Glenwood 5000 stove is rated for 100k BTU, with 11 sf of heat exchange area - about 10k BTU/SF
- 1 kW ~ 3000 BTU/hr
- Black pipe is only $12/square foot (10k BTU) of heat exchange area using 1" pipe! - [2]
- 1/2" PEX power production - 22 BTU/hr for 1 foot of length - [3]. 500 feet per trough = 11k BTU