The concept of a new approximate relation for heat transfer effectiveness for a cross-flow heat exchanger with unmixed fluids

Rafał Laskowski

Abstract

This 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.
Author Rafał Laskowski (FPAE / IHE)
Rafał Laskowski,,
- The Institute of Heat Engineering
Journal seriesJournal of Power Technologies, ISSN 2083-4187, e-ISSN 2083-4195, (B 4 pkt)
Issue year2011
Vol91
No2
Pages93-101
Publication size in sheets0.5
Keywords in Englishcounter-flow heat exchangers, cross-flow heat exchangers, heat transfer eectiveness
ASJC Classification2102 Energy Engineering and Power Technology
URL http://papers.itc.pw.edu.pl/index.php/JPT/article/view/238
Languageen angielski
Score (nominal)4
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2015 = 0
Citation count*6 (2017-06-05)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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