SAUDI SERVICES Interview Questions and Answers

Cooling tower approach is the temperature difference between the cooled water and the wet-bulb temperature of the air entering the tower.

• It is a measure of the cooling tower's efficiency.

• A lower approach indicates better efficiency.

• Approach can be calculated using the formula: Approach = Cold Water Temperature - Wet Bulb Temperature.

• For example, if the cold water temperature is 75°F and the wet-bulb temperature is 70°F

A T S diagram is a graphical representation of the refrigeration cycle.

• The diagram shows the temperature and entropy changes of the refrigerant throughout the cycle.

• The cycle consists of four processes: compression, condensation, expansion, and evaporation.

• The compression process raises the temperature and pressure of the refrigerant.

• The condensation process removes heat from the refrigerant, causing it to change from ...read more

A P H diagram is a graphical representation of the pressure-enthalpy relationship of a refrigeration cycle.

• The horizontal axis represents the enthalpy of the refrigerant.

• The vertical axis represents the pressure of the refrigerant.

• The diagram shows the state of the refrigerant at each point of the cycle.

• The diagram is useful for analyzing the performance of the refrigeration cycle and selecting the appropriate refriger...read more