| 摘要 |
PURPOSE:To efficiently heat the water on a single refrigerating cycle by a process wherein the water heating process is divided into two stages: in the first stage, medium temperature water is produced and stored in an heat accumulator; in the second stage, said medium temperature water is heated in order to get high temperature water. CONSTITUTION:The refrigerating cycle consists of a compressor 101, a condenser 102, an expansion valve 103 and an air heat source type evaporator 104. A hot water passage connecting to said condenser 102 consists of pipes 119, 118, which is provided with a pump 110 and to which a feed water pipe 121 is connected through a valve 111 and also to which a low temperature heat accumulator 108 and a high temperature heat accumulator 109 are connected in parallel through valves 112 and 115 respectively, and a pipe 120, to which the low temperature heat accumulator 108 and the high temperature heat accumulator 109 are connected in parallel through valves 113 and 116 respectively. Owing to the arrangement as mentioned above, the medium temperature water stored in the low temperature heat accumulator 108 is recirculated to the condenser 102 in orde to be turned into high temperature water and stored in the high temperature heat accumulator 109. |
