A Performance Evaluation of Different PCM Heat Exchangers for Use as Solar Water Heaters

2021 ◽  
Author(s):  
Wenzhu Lin ◽  
Ziye Ling ◽  
Xiaoming Fang ◽  
Zhengguo Zhang
Keyword(s):  
Performance Evaluation ◽  
Heat Exchangers ◽  
Solar Water ◽  
Water Heaters ◽  
Solar Water Heaters ◽  
A Performance

Performance of solar water heaters with narrow mantle heat exchangers

Solar Energy ◽  
2009 ◽  
Vol 83 (3) ◽  
pp. 350-362 ◽  
Author(s):  
Y.C. Soo Too ◽  
G.L. Morrison ◽  
M. Behnia
Keyword(s):  
Heat Exchangers ◽  
Solar Water ◽  
Water Heaters ◽  
Solar Water Heaters

Performance and Modeling of Thermosyphon Heat Exchangers for Solar Water Heaters

1997 ◽  
Vol 119 (3) ◽  
pp. 193-200 ◽  
Author(s):  
S. D. Dahl ◽  
J. H. Davidson
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Exchangers ◽  
Operating Conditions ◽  
Heating Systems ◽  
Solar Water ◽  
Water Heaters ◽  
Prandtl Numbers ◽  
Area Product ◽  
Solar Water Heaters

Determining the performance of indirect solar heating systems that use thermosyphon heat exchangers requires knowledge of how thermosyphon flow rate and heat exchanger performance vary with operating conditions. In this paper, measured performance of a two-pass, tube-in-shell, double-wall heat exchanger is discussed in terms of modeling issues. Thermosyphon heat exchangers may operate in the developing, mixed convection regime where natural convection effects can significantly influence overall heat transfer and friction coefficients. Existing models which assume the thermal and hydraulic behaviors of thermosyphon heat exchangers are only functions of the thermosyphon and collector flow rates may not be suitable for all heat exchanger types. For example, the overall heat-transfer coefficient-area product for the two-pass, tube-in-shell heat exchanger is best expressed as a function of Reynolds, Grashof, and Prandtl numbers on the thermosyphon side of the heat exchanger. It is proposed that annual simulations of solar water heaters with thermosyphon heat exchangers use this type of relationship to characterize heat transfer in the heat exchanger.

Characteristics Of Vertical Mantle Heat Exchangers For Solar Water Heaters

Solar Energy ◽  
1999 ◽  
Vol 67 (1-3) ◽  
pp. 79-91 ◽  
Author(s):  
L.J. Shah ◽  
G.L. Morrison ◽  
M. Behnia
Keyword(s):  
Heat Exchangers ◽  
Solar Water ◽  
Water Heaters ◽  
Solar Water Heaters

Mantle heat exchangers for horizontal tank thermosyphon solar water heaters

Solar Energy ◽  
1999 ◽  
Vol 67 (1-3) ◽  
pp. 53-64 ◽  
Author(s):  
Graham L. Morrison ◽  
Gary Rosengarten ◽  
Masud Behnia
Keyword(s):  
Heat Exchangers ◽  
Solar Water ◽  
Water Heaters ◽  
Horizontal Tank ◽  
Solar Water Heaters
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