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Abstract: A general steady state and distributed parameter model of
fin-and-tube heat exchanger is developed based on graph theory and
traversal methods, in which the performance of fin-and-tube heat
exchanger with the complex refrigerant circuitry can be predicted. With
the help of the directed graph and graph-based traversal method
(Breadth-first search and depth-first search), this model Canbe used to
describe any flexible refrigerant circuit arrangement, and quantify the
heat conduction through fins. The model is verified with the
experimental results, and the average error of heat transfer and
pressure drop are within ±5.0% and ±20.0%, respectively. It is concluded
that the steady state model can be used as a tool to design and optimize
the compact heat exchanger.
Key words: Graph theory Heat exchanger Steady state
CLC No: TB657
国家重点基础规划973研究基金资助项目(G2000026309). Received
20040618, received in revised form 20041201
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