When is a heat exchanger classified as being compact? Do you think a double-pipe heat exchanger can be classified as a compact heat exchanger?
What will be an ideal response?
A heat exchanger is classified as being compact if ? > 700 m2/m3 or (200 ft2/ft3) where ? is the ratio of the heat transfer surface area to its volume which is called the area density. The area density for double-pipe heat exchanger can not be in the order of 700. Therefore, it can not be classified as a compact heat exchanger.
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Although any receding angle from 0 degrees to 90 degrees may be used for an oblique drawing, angles between 30 degrees and ____________________ degrees should be used, which minimizes the distortion and elongation.
Fill in the blank(s) with the appropriate word(s).
Using sketches and notes, explain how the joists and joist girders are stabilized against overturning.
What will be an ideal response?
? Identify and state the historical significance ofDorothea Dix.
What will be an ideal response?
After duct has been installed and leak-tested, the insulation _____.
a. can be applied only to the top of the duct b. should be thermally tested c. can be installed d. jacket can be removed