Heat-pump-assisted dryer part 2: experimental study

Pendyala, V. R. ; Pendyala, S. ; Patwardhan, V. S. (1990) Heat-pump-assisted dryer part 2: experimental study International Journal of Energy Research, 14 (5). pp. 493-507. ISSN 0363-907X

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/er.4440...

Related URL: http://dx.doi.org/10.1002/er.4440140503


The performance of an experimental heat-pump-assisted dryer under operating conditions of some practical interest was studied. The system was operated using R11 and R12. The approach velocity of air to the evaporator and the superheat of the working fluid at the exit of the evaporator were identified as the critical parameters for optimization. The system was evaluated with respect to coefficient of performance (COP) and specific energy consumption (SEC). The (COP)A, and (SEC) values obtained using R11 were 3.5 and 3500 kJ/kg, respectively, and the corresponding values for R12 were 2.5 and 1800 kJ/kg. In spite of the lower (COP)A, for R12, the corresponding (SEC) values were better because the system could be operated without any additional electrical heating with R12.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons, Inc.
Keywords:Heat Pumps; Dryers
ID Code:36684
Deposited On:06 Jul 2011 10:10
Last Modified:06 Jul 2011 10:10

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