Absorption cooling systems achieve cooling using which energy input?

Absorption cooling systems achieve cooling using which energy input?

• A. Electrical energy
• B. Heat
• C. Water
• D. Refrigerant

Answer: (B)

Absorption cooling is driven by heat, not by electrical work. A heat source powers a generator that separates the refrigerant from the absorbent. The refrigerant vapor then condenses in the condenser, releasing heat to the surroundings, and flows to the evaporator where it absorbs heat from the space to be cooled and evaporates. The vapor is then absorbed back into the absorbent, releasing heat in the absorber, and the cycle repeats. Because the driving energy is heat (steam, hot water, gas, or solar thermal), absorption cooling can use low-grade heat sources instead of electricity. Water and refrigerant are part of the working fluids and loops, not energy input.

Absorption cooling is driven by heat, not by electrical work. A heat source powers a generator that separates the refrigerant from the absorbent. The refrigerant vapor then condenses in the condenser, releasing heat to the surroundings, and flows to the evaporator where it absorbs heat from the space to be cooled and evaporates. The vapor is then absorbed back into the absorbent, releasing heat in the absorber, and the cycle repeats. Because the driving energy is heat (steam, hot water, gas, or solar thermal), absorption cooling can use low-grade heat sources instead of electricity. Water and refrigerant are part of the working fluids and loops, not energy input.