What are the benefits to having a solar system as a substitute heat source when the main system is a heat pump?
What will be an ideal response?What will be an ideal response?
Without a solar system, a heat pump does not function well when the outdoor temperature is below 35ºF. Solar system efficiency and effectiveness increase as fluid temperature goes down.
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____________________ is the term used to indicate the relative strength of the series and shunt fields.
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
Many bimetal strip type overload relays can be set for either manual or automatic reset.
Mr. Jones has a barn that houses 8.6 acres of dark fire-cured tobacco. He had a yield of 2,100 pounds per acre. He spent $408 for slabs and sawdust to fire the tobacco. He paid $0.35 per pound for stripping the tobacco.
a. How many pounds of tobacco were in the barn? b. What did the stripping cost? c. What did it cost per acre to fire-cure the tobacco?
The proper type of flame from an oxy-acetylene torch for silver brazing is ____.
A. long tail flame B. neutral flame C. oxidizing flame D. carbonizing flame