Page 32 - Defrosting for Air Source Heat Pump

Comprehensive evaluation index c 2 3 2 2 2 1 1 3 1 2 1

Defrosting effect c 3 3 2 2 2 1 1 2 1 2 2

System stability a 3 3 2 2 1 3 3 3 1 1 2

Additional thermal energy b √ √

Installation space a floor " ! ! " " ! ! ! ! " !

measures System complexity a ! ! ! ! ! ! ! ! " " "

frost-suppression Running cost a " " " " " ! ! ! ! " "

classical Initial cost a " ! " " " ! ! " " " "

11 fin
of inlet inlet inlet rate jet technique fin fin on outside
results measure Reducing humidity air Preheating air Increasing airflow Ultrasonic vibration technique Air Adjusting tube and geometry Adjusting type Coating treatment surface Vapor-injection technique Two-stage technique Adding source heat

Evaluation 1 2 3 4 5 6 7 8 9 10 11 unchanged. !, need. no worst. the

2.3 Frost-suppression increased; , need; 1, best;
Table External Internal a ", b √, in c 3, the