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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0644582 (1975-12-29) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 10 인용 특허 : 0 |
A heat pump conversion system includes an electric furnace located within a building and having a first coil heat exchanger therein, an outside heat exchanger unit having a refrigerant compressor, a second coil heat exchanger and pipe and valve means for selectively connecting the first and second c
A heat pump conversion system comprising furnace means located within a building to be heated including a heat exchanging chamber, electrical heating means disposed in said chamber and first coil heat exchanger means disposed in said chamber and having first and second ports; an outside heat exchang
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