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AIR CONDITIONING OF A LARGE GREENHOUSE UTILISING URBAN WASTE HEAT.

Author(s) : MIYAMOTO S.

Type of article: Article

Summary

DIFFERENT TEMPERATURES WITHIN A GROUP OF BOTANICAL SPECIMEN GREENHOUSES REQUIRE WARM AND CHILLED WATER. BOTH THESE ARE OBTAINED FROM A BATTERY OF HEAT PUMPS, USING SEWAGE WATER AS A SOURCE/SINK TO MAKE UP ANY DEFICIT OF HEAT IN WINTER AND REJECT THE SURPLUS IN SUMMER. SYSTEM STABILITY RESULTS FROM THE STEADY TEMPERATURE OF THE SEWAGE, WHICH VARIES FROM 288.2 K (15.2 DEG C) IN WINTER TO 301.2K (28.2 DEG C) IN SUMMER. IN COLDEST WEATHER A SECOND STAGE HEAT PUMP OPERATES TO PRODUCE WATER AT 353 K (80 DEG C). PLATE HEAT EXCHANGERS SEPARATE SEWAGE FROM PRIMARY CIRCUIT, AND ARE DOSED WITH OZONE AS A CLEANSER. COPS UP TO 4.08. A.R. T.

Details

  • Original title: AIR CONDITIONING OF A LARGE GREENHOUSE UTILISING URBAN WASTE HEAT.
  • Record ID : 1992-1405
  • Languages: English
  • Source: IEA HPC Newsl. - vol. 9 - n. 3
  • Publication date: 1991/09
  • Document available for consultation in the library of the IIR headquarters only.

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