Name: Section: Section One Section Two Section Three
(1) The so-called Design Condition of 2.5% for maximum heat gain calculation means;
a. the relative humidity should be more than 2.5%. b. the hours of air temperature below this Design Condition is 97.5%. c. the hours of air temperature above this Design Condition is 97.5%. d. 2.5% of the time that the air temperature will be below this Design Condition.
(2) Factors that affect sol-air temperature are;
a. indoor air temperature. b. soil temperature, air temperature, and wind velocity. c. solar intensity, soil material, and air infiltration rate. d. solar intensity, surface absorptivity, outdoor air temperature, and wind speed.
(3) The reason that we can not use the delta-T of indoor and outdoor air temperatures to calculate heat gain of a space is due to;
a. in summer, the outdoor air is always warmer than the indoors. b. the thermal mass of building envelope does not delay any heat flow. c. most of the occupants will take vacation during the summer. d. the solar radiation may increase the temperature of exterior surfaces.
(4) Which one of the following statement about "Balanced Point Temperature" is correct?:
a. It is the average of air and mean radiant temperatures. b. It depends on climatic condition. c. It will change if the indoor set temperature changes. d. The taller the building, the balanced point temperature will be higher.
(5) The decrement factor in the heat gain through an envelop is to consider for;
a. the heat diffusion characteristics from time lag and thermal resistance. b. the percent of possible building usage due to occupancy. c. the different type of lighting brand may have different heat output. d. the potential error your consultant may have in the estimation.
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California State Polytechnic University, Pomona