| Difference between Vapor Compression and Absorption System
| | Compression systems | Absorption systems |
| 1. | Small systems are compact and large systems are large. | Small systems are large and great systems are compact. |
| 2. | Liquid at the exit of evaporator might damage compressor. | Existence of liquid at evaporator exit is not a serious difficulty. |
| 3. | Performance (COP with capacity) extremely responsive to evaporator temperatures. | Performance not extremely sensitive to evaporator temperatures. |
| 4. | Performance is susceptible to evaporator superheat. | Evaporator superheat is not important. |
| 5. | System COP decrease considerably at part loads. | COP does not decrease extensively by load. |
| 6. | High noise and vibration. | Take away noise and vibration. |
| 7. | Usual maintenance required. | Extremely low maintenance required. |
| 8. | Various moving parts. | Not many moving parts. |
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