In a hot-gas bypass control, which component is deliberately bypassed to regulate system operation?

In a hot-gas bypass control, which component is deliberately bypassed to regulate system operation?

• A. Expansion Valve
• B. Condenser
• C. Compressor
• D. Evaporator

Answer: (B)

In hot-gas bypass control, the path that is deliberately bypassed is the condenser. By routing some of the hot, high-pressure discharge gas around the condenser, the system reduces the amount of heat that the condenser must reject. This lowers the condenser temperature and the overall head pressure, allowing regulation of the system’s operating point as conditions change. The other components—the expansion valve, compressor, and evaporator—still perform their usual roles in metering refrigerant, circulating it, and absorbing heat from the cooled space, respectively.

In hot-gas bypass control, the path that is deliberately bypassed is the condenser. By routing some of the hot, high-pressure discharge gas around the condenser, the system reduces the amount of heat that the condenser must reject. This lowers the condenser temperature and the overall head pressure, allowing regulation of the system’s operating point as conditions change. The other components—the expansion valve, compressor, and evaporator—still perform their usual roles in metering refrigerant, circulating it, and absorbing heat from the cooled space, respectively.