| 摘要 |
PURPOSE:A low-temp. heat accumulating material having low m.p. and no corrosive properties to a metal for a heat-exchanging tube, etc., which comprises a two-component eutectic mixt. composn. consisting of sodium formate and water. CONSTITUTION:Outside refrigeration system 2 consists of compressor 3, heat exchanger 4, expansion valve 5, refrigerant pipe line 6, etc., and low-temp. heat accumulation-type cooling system 1 consists of low-temp. heat accumulator 7, blower 8, refrigerant pipe line 6a, heat exchanger 9 provided in the accumulator 7 and constituted of a copper-made bare tube, low-temp. heat accumulating material 10 packed into the accumulator 7, etc. The both refrigerant pipe lines 6 and 6a can be connected with each other through joint 11. Two-component eutectic mixt. compositions consisting of sodium formate and water are pref. as said low-temp. heat accumulating material 10, among which one consisting of 23wt% solium formate and 77wt% water is pref. used. |
