Experimental study of an ammonia–water bubble absorber using a plate heat exchanger for absorption refrigeration machines

2009 ◽  
Vol 29 (5-6) ◽  
pp. 1005-1011 ◽  
Author(s):  
Jesús Cerezo ◽  
Mahmoud Bourouis ◽  
Manel Vallès ◽  
Alberto Coronas ◽  
Roberto Best
Keyword(s):  
Experimental Study ◽  
Heat Exchanger ◽  
Plate Heat Exchanger ◽  
Absorption Refrigeration ◽  
Ammonia Water ◽  
Plate Heat

Experimental Study on Heat Transfer of Plate Heat Exchanger and Application to Waste Heat Power Generation

2010 ◽  
Author(s):  
X. Y. Tang ◽  
D. S. Zhu ◽  
C. Q. Guo ◽  
Liejin Guo ◽  
D. D. Joseph ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Power Generation ◽  
Experimental Study ◽  
Heat Exchanger ◽  
Waste Heat ◽  
Plate Heat Exchanger ◽  
Heat Power ◽  
Plate Heat

An Experimental Study on the Influence of Flow Maldistribution on the Pressure Drop Across a Plate Heat Exchanger

2004 ◽  
Vol 126 (4) ◽  
pp. 680-691 ◽  
Author(s):  
B. Prabhakara Rao ◽  
Sarit K. Das
Keyword(s):  
Experimental Study ◽  
Heat Exchanger ◽  
Pressure Drop ◽  
Heat Exchangers ◽  
Plate Heat Exchanger ◽  
Operating Conditions ◽  
Plate Heat ◽  
General Flow ◽  
Proper Design ◽  
Flow Maldistribution

A detailed experimental study on flow maldistribution from port to channel of a plate heat exchanger is presented. In general, flow maldistribution brings about an increase in pressure drop across the heat exchanger. This increase is found to depend on flow rate, number of channels and port size. Experiments show that analytical predictions of pressure drop including maldistribution effect are quite accurate for practical purposes. The results indicate that under identical conditions, maldistribution is more severe in Z-type plate heat exchanger compared to U type. Experiments are also carried out under non-isothermal realistic operating conditions, which show increased flow maldistribution at elevated temperature. Finally predictions are made for industrial plate heat exchangers, which show the limitation of adding additional plates beyond a certain limit. An insight to the physical aspects of maldistribution and its possible reduction through proper design strategy is also indicated.

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