Tpc 435

Question 1

The capacity of the condenser is affected by?

Answer 1

Area of contact with the cooling medium

Question 2

Natural-draft air-cooled condensers and forced air condensers are alike in that both types…

Answer 2

Depend on air circulating over the coils

Question 3

Low-ambient control in air-cooled condensers can be achieved by?

Answer 3

Closing the dampers

Question 4

Spring loaded relief valves protect a system against explosion by acting in response to high ____ . Fusible plugs act in response to high _____ .

Answer 4

1. Pressure
2. Temperature

Question 5

Periodic maintenance of air-cooled condensers includes doing which of the following every three months?

Answer 5

Checking all belts and pulleys

Question 6

In a ______ system, water passes through the condenser to cool the refrigerant, the waste water is then…

Answer 6

1. Waste water
2. Discharged to the sewer

Question 7

In a water cooled condenser system, makeup water is used for?

Answer 7

Replacing water lost through evaporation

Question 8

Tube-in-tube, shell-and-coil, and shell-and-tube condensers are alike in the following way?

Answer 8

Liquid refrigerant collects at the bottom of the

Question 9

A condenser has a pressure relief device that ______ if the refrigerant pressure becomes too high.

Answer 9

Releases refrigerant

Question 10

Generally, how long should you allow a chemical cleaner to stand in a condenser?

Answer 10

A few hours

Question 11

Which of the following can increase the capacity of a cooling tower or a spray pond by the greatest amount?

Answer 11

Increase in air velocity across the surface

Question 12

What type of cooling tower is shown?

Answer 12

Induced draft, counter flow

Question 13

Which components in the water-circulating system for a cooling tower or a spray pond are used to keep the concentration of minerals low?

Answer 13

Bleed off valve

Question 14

The capacity of a cooling tower can be controlled by means of a?

Answer 14

Diverting valve

Question 15

As part of maintaining a cooling tower, you should check the _________ everyday.

Answer 15

Float valve for clogging

Question 16

The basic classifications for evaporative condensers are?

Answer 16

Blow through, and draw through

Question 17

An evaporative condenser may include a desuperheating coil for the purpose of?

Answer 17

Reducing the formation of scale

Question 18

Which of the following methods will maintain condensing pressure during cold weather operation?

Answer 18

Circulating water intermittently

Question 19

What will prevent the water in an evaporative condenser from freezing during cold weather?

Answer 19

Installing a sump heater

Question 20

As part of maintaining an evaporative condenser you should check the ______ every three months.

Answer 20

Fan blades for tightness

Question 21

One of the main categories of water related problems in an air condition or refrigeration system is?

Answer 21

Corrosion

Question 22

Corrosion in a water cooled system can be caused by?

Answer 22

Biological organisms

Question 23

Scale formation can be reduced in a refrigeration system by adding ____ to the cooling water

Answer 23

Acid

Question 24

Bacteria and algae can be controlled in a refrigeration system by adding ______ to the cooling water

Answer 24

Chlorine

Question 25

Chemical deterioration in a wooden cooling tower can be controlled by?

Answer 25

Keeping the P.H. of circulating water in the 6 to 7.5 range