| Titel:
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Analysis of refrigerant mal-distribution |
| Type:
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Article in proceedingsArticle in proceedings |
| Person(er):
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Technical University of Denmark
Email:
Technical University of Denmark
Email:
|
| Uddrag:
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Refrigerant mal-distribution in fin-and-tube evaporators for residential air-conditioning is
investigated numerically in this paper. Essentially the influence of refrigerant mal-distribution
on capacity of an evaporator is reported. In order to investigate, a model of a fin-and-tube
evaporator is developed in the object-oriented modeling language Modelica. The evaporator
model is a dynamic distributed one-dimensional homogeneous model, but will be used here
to present results in steady state. Fin-and-tube evaporators usually have a complex circuitry,
however the evaporator will be simplified to be two straight tubes. The refrigerant maldistribution
is then induced to the evaporator by varying the vapor quality at the inlet to
each tube and the air-flow across each tube. Finally it is shown that mal-distribution can be
compensated by an intelligent distributor, that ensures equal superheat temperature in both
tubes. The refrigerant is R410a. |
| Publiceret:
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part of: Danske Køledage, pages: 25-35, 2009, |
| Fil(er):
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| Præsenteret ved:
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Danske Køledage, Odense Congress Center |
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