Abonnement à la biblothèque: Guest

ISSN Online: 2377-424X

ISBN Print: 0-89116-130-9

International Heat Transfer Conference 6
August, 7-11, 1978, Toronto, Canada

PERFORMANCE SIMULATION OF MULTI-ROW DRY (AND / OR WET) HEAT EXCHANGERS

Get access (open in a dialog) DOI: 10.1615/IHTC6.1790
pages 327-332

Résumé

A mathematical model is developed to perform row-by-row simulation- of finned-tube heat exchangers during cooling or cooling and dehumidification processes. Numerical solution of this model gives the air, water and tube surface temperatures and the air specific humidity after each row of tubes along the coil depth. The average heat transfer coefficient on the air side is calculated using an empirical formula that relates the average heat transfer J-factor with the air-side Reynolds number. Experimental and analytical results (outlet air and water conditions, sensible and latent heat rates) of 4- and 8-row coils showed good agreement during both cooling or cooling and dehumidification processes. This model can be used as an algorithm for coil performance simulation, which represents a part of general computer programs used for conducting energy analysis on HVAC systems in buildings.