Louisiana State University

CM 3201

1)This occurs when latent heat is decreased in a space

2. Heat gain from lights is calculated by multiplying this by 3.41.
3. To calculate the sensible heat gain due to ventilation for a room designed to be 75°F and the outdoor temperature is 87°F, which of the following equations would you use?
4. The U-factor is a number that represents the amount of heat flow through a building assembly due to a temperature difference.
5. Ventilation loads can be calculated using CFM per person or room changes per hour (RCH)
6. If the dry bulb temperature decreases, then the specific volume will                        .
7. This level is controlled by humidifiers and de-humidifiers.
8. The energy given off by lights creates a heat gain for a space
9. A dark colored roof will have a higher TETD value than a light colored roof at any time during the day
10. Psychrometrics is the study of gas/vapor systems.
11. This occurs when less than ideal air leaks into a space that must be accounted for in heating and cooling loads.
12. Wet bulb temperature readings indicate what?
13. Which type of heat transfer occurs when thermal energy flows through a solid material?
14. A change in the wet bulb temperature results in a change in the humidity ratio and relative humidity of the air.
15. On a psychrometric chart, as the humidity ratio decreases, then the latent heat of the air increases.
16. This occurs when the dry bulb, wet bulb, and dew point temperatures are the same
17. in thermodynamics, thermal energy flows from cold to hot
18. According to ASHRAE Standard 55, the comfort zone produces thermal comfort for 80% of the
19. When a heat pump is in the cooling mode, the                                          unit is the evaporator and the   unit is the condenser.
20. Which of the following measures the winter seasonal performance of heat pumps?

21. One ton of air conditioning is equivalent to:
22. Air-cooled equipment for heat rejection handle much smaller tons of capacity when compared to the tons of capacity for water-cooled heat rejection equipment
23. Since heat pumps can be used for heating and cooling purposes, typically one will see heat pumps with a SEER and a HSPF value.
24. A fuel oil                                         is a boiler component that provides atomized fuel oil to the boiler.
25. A                                    draft is a mechanical draft created by air pushed through the boiler firebox by a blower or fan located at the front of a boiler.
26. A hydronic heating system uses a boiler to heat water that is then transported through supply lines to spaces within a facility.
27. The flue gas, which is a by-product of the combustion occurring in boilers and furnaces, is non- toxic and may or may not be exhausted to the outdoors.
28. The vapor compression refrigeration cycle uses an absorbent such as lithium bromide
29. A heating plant for a large medical campus requires 22,000 MBH (1MBH = 1,000,000 btuh) of heating capacity. Which of the following pipe size and velocity in feet per second (fps) for the main would be needed if the plant is a 50 psig medium-pressure steam system?
30. Which of the following HVAC split systems has ductwork found above the furnace and cooling coil?
31. Which of the following would represent a common coefficient of performance value for an A/C system that uses the vapor compression cycle?
32. A split system for air conditioning separates the evaporator from the condensing unit.
33. An oversized cooling system will not only cost more, but can result in short cycling of the system
34. When a heat pump is in the cooling mode, the                                          unit is the evaporator and the   unit is the condenser.
35. What does the compressor do in the vapor compression refrigeration system?
36. The flue gas, which is a by-product of the combustion occurring in boilers and furnaces, is non- toxic and may or may not be exhausted to the outdoors.
37. A hydronic heating system uses a boiler to heat water that is then transported through supply lines to spaces within a facility.