RSES Condenser Systems 2

Question 1

What is the primary effect of non-condensable gases on condenser performance?

Accepted Answer

They raise condensing pressure and reduce capacity

Answer

Non-condensable gases occupy space in the condenser, raising condensing pressure and reducing the effective heat transfer surface.

Question 2

In an evaporative condenser, what is the purpose of the water distribution system?

Accepted Answer

To wet the coil surface for evaporative cooling

Answer

The water distribution system keeps the condenser coil surface wet so that evaporation of water removes heat from the refrigerant.

Question 3

Which factor most directly determines the condensing temperature in an air-cooled condenser?

Accepted Answer

Ambient dry-bulb temperature

Answer

Air-cooled condensers reject heat to ambient air, so the ambient dry-bulb temperature sets the minimum achievable condensing temperature.

Question 4

A condenser coil with fouled fins will most likely result in which condition?

Accepted Answer

Higher condensing pressure and temperature

Answer

Fouled fins restrict airflow and reduce heat transfer, causing the condensing pressure and temperature to rise.

Question 5

What does 'condenser split' refer to in field diagnostics?

Accepted Answer

The difference between condensing temperature and leaving air temperature

Answer

Condenser split is the difference between the refrigerant condensing temperature and the temperature of air leaving the condenser.

(RSES) Refrigeration Service Engineers Society Certification Practice Test