A fixed-plate air-to-air heat exchanger used in an ERV unit _____.
a. pre-cools ventilation air in the winter
b. transfers sensible heat only
c. pre-cools ventilation air in the summer
d. transfers latent heat only
c. pre-cools ventilation air in the summer
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Repeat problem 3.40 for each gas having a temperature of (a) 200 K, and (b) 500 K.
(a) Given: T = 200 K, 0.9 ? Z ? 1.10 (b) T = 500 K What will be an ideal response?
Which of the following types of piping is usually connected by threaded fittings?
a. PVC b. Copper tubing c. Stainless steel d. Carbon steel
The major bearing(s) used with a clutch assembly is (are) the ________
A) Pilot bearing that supports the end of the transmission input shaft
B) Release bearing that is mounted at the front of the transmission
C) Both A and B
D) Neither A nor B
A central factor in the decline of the Roman Empire was the
a. continuous immigration into it of Germans. b. inflation in value of the Roman coin, the silver denarius. c. rising population of the Mediterranean world. d. high cost of defending the empire.