Thermal optimization of refrigeration evaporators.

Author(s) : CORNWELL K.

Type of article: Periodical article


The paper covers some investigations into the design of refrigeration evaporators for air and liquid cooling. In shell and tube liquid coolers, refrigerant both inside and outside tubes is considered. The formulae used are given and results compared with test figures. Conclusions point to better effectiveness with refrigerant boiling inside tubes, increasing with smaller tubes and closer pitch. In finned coil air coolers, smaller tubes and closer fin pitch give greater heat transfer coefficients even when frosting takes place, as the greater surface of closer fins gives rise to thinner frost layers. In all cases, increases in pressure drop in both refrigerant and cooled fluid were ignored, as were manufacturing costs. The results however indicate some rough guidelines for designers. D.W.H.


  • Original title: Thermal optimization of refrigeration evaporators.
  • Record ID : 1992-2688
  • Languages: English
  • Source: Inst. Refrig., Adv. Proof - 1991.11.07; 10 p.; 10 fig.; 8 tabl.; 19 ref.
  • Publication date: 1991
  • Document available for consultation in the library of the IIR headquarters only.


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