Produção Nacional
Effectiveness - NTU data and analysis for air conditioning and refrigeration air coils
2010; Springer Science+Business Media; Volume: 32; Issue: 3 Linguagem: Inglês
10.1590/s1678-58782010000300004
ISSN1806-3691
AutoresHélio Aparecido Navarro, Luben Cabezas‐Gómez, João R. Bastos Zoghbi Filho, Gherhardt Ribatski, José Maria Saíz-Jabardo,
Tópico(s)Refrigeration and Air Conditioning Technologies
ResumoA simulation program based on a control volume analysis has been used in the evaluation of the (ε, NTU) relationship for coils of complex geometry and flow arrangement. The simulation program has been evaluated through simple geometry and flow arrangement coils. The program results compare very well with correlations for simple cross flow coils, and a number of rows up to four. It has also been determined that closed form correlations developed for coils of an infinite number of tube rows are inadequate for those with number of rows in the range between 5 and 10. In addition, it has been found that closed form (ε, NTU) correlations for cross flow coils with the same tube arrangement and number of rows might lead to inaccuracies higher than 10% in the evaluation of the effectiveness of coils of complex flow arrangement.
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