The concept of a new approximate relation for heat transfer effectiveness for a cross-flow heat exchanger with unmixed fluids
AbstractThis paper presents an approximate relation for the heat transfer effectiveness for a counter-flow heat exchanger, which was compared with the exact solution. Based on the obtained approximate relation for a counter-flow heat exchanger the approximate heat transfer effectiveness for a cross-flow heat exchanger in which both fluids do not mix is proposed. This approximate heat transfer effectiveness was compared with the exact solution proposed by Mason, the most well-known relation. A comparison between the most frequently used approximate formula and the exact solution proposed by Mason was made, too. The heat transfer effectiveness was analyzed for the ratio of the heat capacity of fluids C in the range from 0 to 1 and the number of transfer units NTU from the most common range 0 – 5.
How to Cite
LASKOWSKI, Rafal Marcin. The concept of a new approximate relation for heat transfer effectiveness for a cross-flow heat exchanger with unmixed fluids. Journal of Power Technologies, [S.l.], v. 91, n. 2, p. 93-101, june 2011. ISSN 2083-4195. Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/238>. Date accessed: 01 aug. 2021.
cross-flow heat exchangers, counter-flow heat exchangers, heat transfer eectiveness
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