公开(公告)号：JPH02254292A

公开(公告)日：1990-10-15

申请号：JP7444589

申请日：1989-03-27

Applicant: AGENCY IND SCIENCE TECHN

Inventor： YAMAMOTO ITARU ,  TANAKA YOSHIO ,  KIZAWA TAKAO ,  NAKAZAWA KATSUHIRO

IPC: F28D15/02 ,  F28D20/00

Abstract: PURPOSE:To reduce a size of a heat storage tank container, improve a heat storage capability and a thermal efficiency and further improve a thermal transporting capability and an operating characteristic by a method wherein the heat storage tank is arranged at a connection part of two circuits of a flow passage for performing a process under a difference of density of working fluid and another flow passage utilizing evaporation and condensation of the working fluid. CONSTITUTION:Working fluid 3 enclosed at a part of a working fluid flow passage 1 is heated by a heater 4, the heat is moved to a heat storage tank under a natural circulation, the heat is released and stored in the heat storage tank 5. The working fluid 3 discharged heat at the heat storage tank 5 and having its temperature lowered descends in a down-pipe 1-4 due to a difference in density and returns to the heater 4. As a temperature of the heat storage tank 5 reaches a predetermined temperature, an inputting of heat from the heater 4 is stopped and the heat is carried to a cooling unit 6 arranged at a connecting pipe 2-3 between as ascending pipe 2-1 at an upper part of the working fluid flow passage 2 and a down-pipe 2-2. The heat is discharged out of the pipe. The working fluid 3 discharged a latent heat through the cooling unit 6 is condensed and returns to the heat storage tank 5 through the down-pipe 2-2. With such an arrangement, it is possible to improve a thermal efficiency as well as a heat storage capability, provide a small-sized device and improve an operating characteristic.