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Author
Domanski, P. A. | Didion, D. A. | Doyle, J. P.
Title
Evaluation of Suction Line-Liquid Line Heat Exchange in the Refrigeration Cycle.
Coporate
National Institute of Standards and Technology, Gaithersburg, MD Giant Food, Inc., Washington, DC
Book or Conf
International Refrigeration Conference. July 14-17, 1992, West Lafayett, IN, 1-9 p., 1992
Keywords
refrigeration | heat transfer | evaluation | installations | thermodynamic properties
Abstract
The paper presents a theoretical evaluation of the performance effects resulting from the installation of a liquid line/suction line heat exchanger (llsl-hx). It examines cycle the parameters and refrigerant thermodynamic properties that determine whether the installation results in improvement of COP and volumetric capacity. The study showed that the benefit of application of the llsl-hx depends on a combination of operating conditions and fluid properties - heat capacity, latent heat, and coefficient of thermal expansion - with heat capacity being the most influencial property. Fluids that perform well in the basic cycle are marginally affected by the llsl-hx, and the impact on the Coefficient of Performance and volumetric capacity may be either positive or negative. Fluids performing poorly in the basic cycle benefit from the llsl-hx installation through increase of the Coefficient of Performance and volumetric capacity.