The performance of cascade cycle air-source heat pump has been investigated experimentally. The cascade heat pump cycle consists of high temperature of R134a and low temperature of R410a. We have complementary primary air source heat pump. As a result, we produce the products with the best performance. The rated capacity of heat pump is 25kW and the cold capacity of heat pump is 25kW. The KSCOP_C of colder condition is 2.61 and KSCOP_A of average condition is 2.74 and KSCOP_W of warmer is 2.74.

Abstract
 1. 서론
 2. 실험장치 및 방법
  2.1 한전심야 전력기기(히트펌프) 기술수준
  2.2 캐스케이드 히트펌프 개요
  2.3 시제품 보완 사항 및 설계 사양
 3. 결과 및 고찰
  3.1 외기온도에 따른 난방능력
  3.2 외기온도에 따른 소비전력 변화
  3.3 외기온도에 따른 성능계수 (COP)
  3.4 정격 및 한랭지형 난방성능
 4. 결론 및 고찰
 References

• 남경섭((주)엠티에스) | Kyung-Sup Nam
• 배종모((주)엠티에스) | Jong-Mo Bae
• 김창준((주)엠티에스) | Chang Jun-Kim
• 곽명아((주)엠티에스) | Myeong-A Kwak
• 곽상기((주)엠티에스) | Sang-Ki Kwak
• 장인성(동원과학기술대학교 냉동공조설비과) | In-Sung Jang