The automatic purge system does not require?

The automatic purge system does not require?

a. Vacuum pump
b. Suction chamber
c. Return chamber
d. Storage chamber
e. A and D






Answer: A

In a absorption refrigeration system, which one is NOT a possible cause for crystallization following start-up in the system?

In a absorption refrigeration system, which one is NOT a possible cause for crystallization following start-up in the system?

a. Noncondensables in machine
b. Condenser cooling water too cold
c. Faulty purging
d. Cooling water too warm






Answer: D

In a absorption refrigeration system, which one is NOT a possible cause for decreased capacity in the system?

In a absorption refrigeration system, which one is NOT a possible cause for decreased capacity in the system?

a. Noncondensables in machine
b. Purging ineffective
c. Dilution cycle is to short
d. Lithium brodmide requires octyl alcohol
e. Cooling water too warm







Answer: C

Which of the following are elements of a mechanical purging system? i) purge pickup tube ii) purge chamber iii) manual shutoff valve iv) safety solenoid valve v) oil trap vi) vacuum pump

Which of the following are elements of a mechanical purging system?
i) purge pickup tube
ii) purge chamber
iii) manual shutoff valve
iv) safety solenoid valve
v) oil trap
vi) vacuum pump

a) i and ii only
b) i, ii, and v only
c) iv and vi only
d) i, iii, and v only
e) all of the elements






Answer: E

Concentration of the Lithium Bromide can be most easily controlled by which of the following means?

Concentration of the Lithium Bromide can be most easily controlled by which of the following means?

a) Controlling the volume of water sprayed into the absorber.
b) Controlling the temperature in the cooling tower.
c) Controlling the amount of weak Lithium Bromide pumped into the generator.
d) Controlling the pressure in the vacuum between the evaporator and the absorber.
e) Controlling the temperature in the generator.







Answer: E

In a closed tank that is partially filled with a salt solution at a temperature well below the boiling point of the solution:

In a closed tank that is partially filled with a salt solution at a temperature well below the boiling point of the solution:

a. Some molecules of water vapour will actually escape from the solution
b. There will be a steady stream of water vapour molecules leaving and entering the solution
c. No molecules of water vapour will be able escape from the solution
d. No molecules of water vapour will be absorbed back into the solution
e. Some molecules of water vapour will actually be absorbed back into the solution








Answer: B