Publication: Numerical analysis of multipurpose shell-tube-heat exchanger withal stylized geometry at different baffle gaps and various flow rates
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Date
2023-12-01
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Abstract
The effects of changing 90 mm and 110 mm plate spacings and FR factor of 0.9 kg/h, 1.3 kg/h, 1.7
kg/h, 1.9 kg/h on the total heat transfer performance and PD in the new design HX were examined.
The results obtained by taking into account the change in plate spacing and FR factor of 0.9 kg/h,
1.3 kg/h, 1.7 kg/h and 1.9 kg/h, as well as variable factors, were transferred to the study and
displayed in figures. In the study, firstly, the results of HCO obtained by changing FR and range were
monitored. In the analysis, the interval values were 90 mm and 110 mm and the changes in the FR
values of 0.9 kg/h, 1.3 kg/h, 1.7 kg/h and 1.9 kg/h increased in direct proportion. The smallest
value of the heat transfer rate was obtained at 110 mm plate spacing and 0.9 kg/h FR. In addition, if
the plate spacing was 90 mm, the smallest HCO was obtained at 0.9 kg/h. The largest HCO was
obtained when the plate spacing was 90 mm and FR was 1.9 kg/h. In the second part of the study, the
results of PD obtained by changing FR and gap were monitored. In the analysis, the interval values
were 90 mm and 110 mm and the changes in FR values of 0.9 kg/h, 1.3 kg/h, 1.7 kg/h and 1.9 kg/h
increased in direct proportion. The smallest value of PD level was obtained at 90 mm plate spacing
and 0.9 kg/h FR. In addition, if the plate spacing was 110 mm, the smallest heat transfer coefficient
was obtained at 0.9 kg/h. The largest PD value was obtained when the plate spacing was 110 mm
and FR was 1.9 kg/h. In the last part of the study, the results obtained by changing FR and range of
the HTPD value were monitored. In the analysis, the interval values were 90 mm and 110 mm, and
the changes in FR values of 0.9 kg/h, 1.3 kg/h, 1.7 kg/h and 1.9 kg/h decreased in direct proportion.
The smallest value of the HTPD level was obtained at 110 mm plate spacing and 1.9 kg/h FR. In
addition, if the plate spacing was 90 mm, the smallest HTPD value was obtained at 1.9 kg/h. The
highest HTPD value was obtained when the plate spacing was 90 mm and FR was 0.9 kg/h.
Therefore, choosing a system with a 90 mm plate spacing and a FR of 0.9 kg/h will be more efficient
in terms of thermohydraulic performance and pressure balancing. As a result, it was concluded that
if the plate spacing was selected as 90 mm, a 15 % improvement could be achieved compared to the
system design with a 110 mm plate spacing. As a new, it is thought that it will contribute to the
literature in future studies, as the thermal performance, pressure drop and heat transfer coefficient
results obtained at new flow rate values and compartment spacing values are obtained for the first
time in a new STH designed in different dimensions than the literature.
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Keywords
Mühendislik ve Teknoloji, Engineering and Technology, Mühendislik, Bilişim ve Teknoloji (ENG), Engineering, Computing & Technology (ENG), Exchanger, Baffle board, CFD, Computational
Citation
Kartal D. M. A., Feyzioğlu A., "Numerical analysis of multipurpose shell-tube-heat exchanger withal stylized geometry at different baffle gaps and various flow rates", CASE STUDIES IN THERMAL ENGINEERING, cilt.52, ss.1-13, 2023