시스템 히트펌프의 용량조절 및 최적화에 관한 연구
The Performance of Capacity Modulation and Optimization for System Heat Pump
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초록
A system heat pump provides the benefits of comfort, energy conservation and easy maintenance. Recently, the system heat pump has been employed in small and medium-sized buildings. However, the performance data and control algorithm for system heat pump are limited in literature due to complicated system parameters and operating conditions. In the present study, the performance of a system heat pump with two indoor unit is measured by varying indoor loads, EEV opening, and compressor speed. In addition, the integral optimum regulator which includes MIMO control algorithm is proposed. The capacity modulation and optimum capacity for each indoor unit can be adjusted by utilizing the EEVs opening and compressor speed. The proposed scheme shows appropriate control performance at test conditions.
Abstract
A system heat pump provides the benefits of comfort, energy conservation and easy maintenance. Recently, the system heat pump has been employed in small and medium-sized buildings. However, the performance data and control algorithm for system heat pump are limited in literature due to complicated system parameters and operating conditions. In the present study, the performance of a system heat pump with two indoor unit is measured by varying indoor loads, EEV opening, and compressor speed. In addition, the integral optimum regulator which includes MIMO control algorithm is proposed. The capacity modulation and optimum capacity for each indoor unit can be adjusted by utilizing the EEVs opening and compressor speed. The proposed scheme shows appropriate control performance at test conditions.
참고문헌 (6)
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- Yasuda, H., "Evaporator superheat control by an electrically driven expansion valve", Trans. of the JAR, 5(2), pp.147~156 (1992)
- Fujita, Y., "Multi air conditioner with two indoor units", Refrigeration, 67(772), pp.171~176 (1992)
- Landau, I., "System Identification and Control Design" (1990), Prentice Hall
- Choi, J.M., "Study on the transient performance and optimal control of a variable speed multi-heat pump", 박사, pp.2002