A horizontal move to the right on the psychrometric chart corresponds to which of the following? Select all that apply. A) A decrease in specific B) An increase in enthalpy. C) A decrease in D) A decrease in humidity ratio. E) A decrease in relative F)
A horizontal move to the right on the psychrometric chart corresponds to which of the following?
Select all that apply.
- A) A decrease in specific B) An increase in enthalpy.
- C) A decrease in D) A decrease in humidity ratio.
- E) A decrease in relative F)
Which of the following equations is correct to calculate heat flow by water?
- A) Q = 500 * GPM * AT B) Q = 4.5 * CFM * AH
- C) Q = 1.1 * CFM * AT D)
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Identify which of these equations should be used for the following load estimates:
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(1) |
Q = U × A × TETD |
(2) Q = U * A * TD |
(3) Q = 1.1 * CFM * TD |
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(4) |
Q = SC * A * SHGF |
(5) Q = 4.5 * CFM * AH |
(6) Q = 3.41 * P |
Conducted heating load through a roof Conducted cooling load through a wall Conducted cooling load through a window Solar cooling load through a window Winter infiltration load
Summer infiltration load Appliance cooling load
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) Building occupants are often assume to liberate 500 Btuh, consisting of 250 Btuh sensible heat + 250 Btuh latent heat. If, for some reason, the occupants liberated 600 Btuh, consisting of 150 Btuh
sensible heat + 450 Btuh latent heat, which of the following effects would occur? Select all that apply.
- Less refrigeration would be
- More refrigeration would be
- More air would be needed to cool the
- Less air would be needed to cool the
) If the building is designed to have separate air conditioning systems for each face (N, S, E, and W), for what time of day would you size the East facing system?
- A) 8:00 AM B) Noon C) 4:00 PM
) Which list states the correct order of equipment for the vapor compression cycle?
- Condenser, then compressor, then evaporator, then expansion
- Expansion valve, then evaporator, then compressor, then
- Compressor, then expansion valve, then evaporator, then,
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) Match these refrigerants (insert number) with their properties listed below. (1) R-12
(2) R -134A
(3) R-410A
(4) R-717
Environmentally friendly, but flammable and toxic. Banned by Montreal Protocol due to high ODP.
On its way out due to high GWP. Was a replacement for R-22.
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Which of the following statements is true of desiccant cooling? Select all that apply.
- Must be used in combination with another system to provide
- Uses heat to regenerate
- Cooling effect consists primarily of
- Can be used for comfort cooling in dry
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