EXPERIMENTAL INVESTIGATION ON THERMAL PERFORMANCE OF GRAVITY ASSISTED HEAT PIPE HEAT EXCHANGERS

Authors

  • Shekasa Nadaf Department of Mechanical EngineeringGovernment Engineering College, Haveri-581110, INDIA
  • P.B.Gangavati Department of Mechanical EngineeringBasaveswar Engineering College,Bagalkot-587102, INDIA

Keywords:

Heat Pipe,, Heat Exchanger, Preheat, Filling Ratio

Abstract

The performance of a gravity assisted heat pipe heat exchangers (HPHX) investigated experimentally. The HPHX consist of evaporator and condenser sections of different lengths and designed with three section ratio 1:3, 1:1 and 3:1 keeping the total length of HPHX 300mm. The heat pipes were fabricated with standard copper tube of inner diameter of 22.5 mm. The distilled water and acetone were usedas working fluid with filling ratios of 40% and 80% of evaporator volume. In experiments, the exhausted engine waste heat at full load is used for supplying the heat to the evaporator section. The pongamia biodiesel was used to preheat in condenser section before admission into engine cylinder. The experimental results indicated that the effectiveness of HPHX decreases with the increased section ratio. In addition, the effectiveness of the HPHX obtained from the experiments varied between 0.272 and 0.717. The 80% Acetone charged HPHXs shows better results with reduced thermal resistance and larger heat capacity.

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Published

2021-03-27

Issue

2019: NITET

Section

Articles

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