| Title |
Experimental Study on Performance Evaluation of System Air-Conditioner using Compressor of PWM or Inverter Method |
| Authors |
전용호 ; 김대훈 ; 허삼행 ; 권영철 ; 문제명 ; 홍주태 |
| Keywords |
System A/C ; 시스템에어컨 ; PWM ; 펄스폭변조 ; Compressor ; 압축기 ; BLDC inverter ; BLDC 인버터 ; Cooling and heating ; 냉난방 |
| Abstract |
In the present study, the heating and cooling characteristics of system air- conditioner using a PWM compressor or a BLDC inverter compressor are investigated by the psychometric calorimeter using air enthalpy method. Cooling and heating capacities, power inputs and COPs are measured at the low, moderate, high loads under the cooling and heating standard conditions. At cooling conditions, the capacity of the PWM system is larger than that of the inverter case. Due to large power input, however, low COPs are measured under total load ranges. At heating conditions, the capacity of the PWM method is a little larger than that of the inverter case, except high load range. Since power input is low, large COPs are measured at moderate and high load ranges, which are different from cooling data. This shows that the PWM system compared with the inverter case has good energy consumption efficiency at moderate and high load ranges except low load range. And when the system A/C is operated under the cooling and heating standard conditions, COPs are nearly uniform at total load ranges. |