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
 1. 서 론
 2. 실험장치 및 실험방법
  3.1 시스템 모델링
  3.2 적분형 최적레귤레이터
 4. 결과 및 고찰
  4.1 히트펌프의 용량 조절 특성
  4.2 최적 적분형 레귤레이터 성능 특성
 5. 결 론
 참 고 문 헌

• 최종민(국립한밭대학교 기계공학과) | J. M. CHOI