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EFFECT OF AXIAL SPACING VARIATION OF UNDERGROUND PIPE LOOP ON CONDENSER HEAT TRANSFER.

Author(s) : MOUJAES S. F., CROWLEY R.

Summary

A NUMERICAL SIMULATION WAS PERFORMED TO STUDY THE EFFECT OF AXIAL SPACING VARIATION BETWEEN 2 LEGS OF A U-BEND PIPE ON HEAT DISSIPATION, USED FOR CONDENSER HEAT TRANSFER, IN A CLOSED-LOOP WATER-COOLED EARTH-COUPLED HEAT PUMP. THREE PROBLEMS WERE STUDIED. THE FIRST USED A UNIFORM CONDUCTIVITY MODEL, AND THE SECOND ONE ASSUMED A LINEAR RELATIONSHIP OF SOIL CONDUCTIVITY WITH TEMPERATURE. BY ASSUMING UNIFORM BUT DIFFERENT AVERAGE OUTSIDE PIPE SURFACE AND EARTH TEMPERATURES, IT WAS FOUND THAT AN INCREASE OF 20% IN HEAT TRANSFER, OVER THE BASE CASE OF PIPES TOUCHING EACH OTHER, CAN BE ACHIEVED BY SPACING THE PIPES ABOUT 0.18 M APART.

Details

  • Original title: EFFECT OF AXIAL SPACING VARIATION OF UNDERGROUND PIPE LOOP ON CONDENSER HEAT TRANSFER.
  • Record ID : 1989-2447
  • Languages: English
  • Publication date: 1988
  • Source: Source: ASHRAE Trans.
    vol. 94; n. 2; 46-56; 5 fig.; 1 tabl.; 6 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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