| 摘要 |
PURPOSE:To prevent to reduce the absorving amount of atmospheric heat even in case a heat collector is provided near a wall surface and improve operating efficiency by a method wherein the fin tube type heat collector is divided into upper and lower stages and the width of heat collecting fins of the upper stage is made smaller than the same of the lower stage. CONSTITUTION:The heat collector 4 is constituted of fin tube type constitution, in which a multitude of lower and upper stages heat collecting fins 4b, 4c are arranged on a refrigerant tube and the upper stage heat collecting fins 4c are the heat collecting fins for the refrigerant tube at the downstream side of the flow direction of refrigerant while the width thereof is made smaller than the width of fins of the lower stage heat collecting fins 4b. Accordingly, a gap is produced between the upper stage heat collecting fins 4c and the wall surface in case the heat collector 4 is provided near the wall surface, therefore, air, whose heat is absorobed by the upper stage heat collecting fins 4c and whose humidity is reduced by being cooled through the fins 4c, is mixed with fresh and high-temperature atmosphere being flowed thereinto from the upper part of the heat collector 4 and the enthalpy thereof becomes high whereby it heats the lower stage heat collecting fins 4b. According to this method, the heat absorbing amount of the lower stage heat collecting fins 2b may be increased. |
