PLANT CULTIVATION USING THERMAL EXHAUST FROM THERMAL-POWER GENERATION AND SYSTEM THEREFOR

PURPOSE:To provide the title system intended to prevent global warming and utilize the CO2-contg. waste heat from thermal-power generation, so designed that the CO2- contg. thermal exhaust produced by thermal-power generation is cooled to temperatures suitable for plant cultivation and introduced into plant cultivation site(s). CONSTITUTION:In the objective system 1, the thermal exhaust 3 released from a thermal power plant 2 is fed through a changeover valve 4a to an absorption refrigerating machine 5, passed through the heat sink (an evaporator) 5a of the refrigerating machine 5, and put to heat exchange with a refrigerant 6. The resulting exhaust 3 is introduced via a changeover valve 4b into a heat exchanger 7, where seawater 8 is flowing and the exhaust is put to heat exchange with the seawater 8. The resultant exhaust 3 is finally supplied to plant cultivation plant(s) 8. In the above processes, the refrigerating machine 5 is equipped with an air conditioning part 5b equivalent to a generator, and this conditioning part 5b is put into another plant cultivation plant 9. The refrigerant 6 is put to heat exchange with the thermal exhaust 3 at the heat sink 5a, vaporized and dissolved in a solution at an absorber 5c. Thence, the refrigerant takes heat from the ambient atmosphere at the air conditioning part 5b and evaporates again from the solution.