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http://dx.doi.org/10.5762/KAIS.2013.14.2.517

Performance Analysis of the Soft Ice-cream Maker Having Two Evaporators Operating at Different Temperatures  

Kim, Jeong-Sik (Division of Technical Innovation, Incheon Technopark)
Kim, Nae-Hyun (Department of Mechanical Engineering, University of Incheon)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.2, 2013 , pp. 517-522 More about this Journal
Abstract
Small size ice-cream maker has two evaporators having different evaporating temperatures of $4^{\circ}C$ and $-8^{\circ}C$. In such case, ice-cream maker system design becomes complicated because multiple capillary tubes affects one another. In this study, performance analysis was conducted for the soft ice-cream maker having two evaporators operating at different temperatures. The compressor was analyzed using efficiency models, the capillary tube was modeled assuming one-dimensional flow, the condenser and the evaporators were modeld based on UA-LMTD method. The refrigeration cycle simulation program was developed applying the enthalpy, pressure and mass balance on each component. Comparison of the test data with the simulated results for R404A revealed that evaporator temperatures of refrigerator and freezer agreed within $3^{\circ}C$.
Keywords
Ice-cream maker; Multi-evaporator; Performance analysis; Simulation program;
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