Thermal Science 2015 Volume 19, Issue 5, Pages: 1685-1697
https://doi.org/10.2298/TSCI100818020Y
Full text ( 444 KB)
Cited by
Heat pipe heat exchanger and its potential to energy recovery in the tropics
Yau Yat H. (University of Malaya, Department of Mechanical Engineering, Kuala Lumpur, Malaysia)
Ahmadzadehtalatapeh Mohammad (Chabahar Maritime University, Department of Marine Engineering, Chabahar, Iran)
The heat recovery by the heat pipe heat exchangers was studied in the
tropics. Heat pipe heat exchangers with two, four, six, and eight numbers of
rows were examined for this purpose. The coil face velocity was set at 2 m/s
and the temperature of return air was kept at 24°C in this study. The
performance of the heat pipe heat exchangers was recorded during the one week
of operation (168 hours) to examine the performance data. Then, the collected
data from the one week of operation were used to estimate the amount of
energy recovered by the heat pipe heat exchangers annually. The effect of the
inside design temperature and the coil face velocity on the energy recovery
for a typical heat pipe heat exchanger was also investigated. In addition,
heat pipe heat exchangers were simulated based on the effectiveness-NTU
method, and their theoretical values for the thermal performance were
compared with the experimental results.
Keywords: energy recovery, heat pipe heat exchanger, tropics, effectiveness-NTU method