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PASSIVE DOWNWARD HEAT TRANSPORT: EXPERIMENTAL RESULTS OF A TECHNICAL UNIT.

Author(s) : BENI G. de, FRIESEN R.

Type of article: Article

Summary

DESCRIBES A BUILT AND TESTED BENCH-SCALE MODEL FOR PASSIVE DOWNWARD TRANSPORT OF HEAT. THE HEAT IS TRANSPORTED BY EVAPORATION OF A FLUID IN AN EVAPORATOR AT A HIGHER LEVEL AND CONDENSATION AT A LOWER LEVEL. THE CONDENSATE IS RETURNED TO THE EVAPORATOR BY THE PERIODIC OPERATION OF A SELF-ACTUATED FLOAT VALVE WITHOUT DISCONNECTING THE HEAT DELIVERY TO THE EVAPORATOR. THE COST OF LIFTING THE LIQUID BACK TO THE EVAPORATOR IS A TEMPERATURE DIFFERENCE OF FEW DEGREES K BETWEEN THE EVAPORATOR AND THE HEAT STORE. THE UNIT WORKS UNDER MODERATE PRESSURE: A MAXIMUM OF 9 BAR (900 KILOPASCALS) AT 358 K (85 DEG C). STATES THE SYSTEM CAN EASILY BE INTEGRATED WITH A SOLAR HEAT COLLECTOR. (INT. BUILD. SERV. ABSTR., GB., 20, N.4, 1985, 23, 85-01270.

Details

  • Original title: PASSIVE DOWNWARD HEAT TRANSPORT: EXPERIMENTAL RESULTS OF A TECHNICAL UNIT.
  • Record ID : 1986-1688
  • Languages: English
  • Subject: General information
  • Source: Int. J. sol. Energy - vol. 34 - n. 2
  • Publication date: 1985
  • Document available for consultation in the library of the IIR headquarters only.

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