Question 191Refrigeration/AC - Assistant Engineer70% to pass
Low compressor head pressure in a refrigeration system can be caused by which of the following?
AI Explanation
The correct answer is A) excessive condenser cooling water flow.
Explanation:
In a refrigeration system, the compressor is responsible for circulating the refrigerant through the system. The compressor's head pressure is a key indicator of the system's performance. If the compressor head pressure is low, it can be caused by excessive condenser cooling water flow. This excessive flow reduces the temperature of the refrigerant as it passes through the condenser, preventing the refrigerant from fully condensing. As a result, the compressor has to work harder to maintain the required pressure, leading to low head pressure.
The other options are incorrect because: B) insufficient cooling water flow would lead to high head pressure, C) excessive refrigerant would cause high head pressure, and D) air in the system would disrupt the refrigerant cycle and also lead to high head pressure.
Related Questions
#189 Which of the conditions listed could cause excessively low refrigerant pressure at the compressor suction of a TXV controlled refrigeration system? #190 High suction pressure accompanied by low suction temperature to a refrigeration system compressor is caused by which of the following? #192 If the running suction pressure at the refrigeration compressor of a TXV controlled air- cooled refrigeration system is below normal, which of the following can be a cause? #193 In an operating, water-cooled, multi-box refrigeration system, both low discharge and high suction pressures are being simultaneously experienced. The probable cause for this condition is which of the following? #194 If increasing the cooling water flow to a refrigeration condenser fails to lower the condenser pressure, the probable cause may be due to what condition?