Research on the air pressure drop in plate finned tube heat exchangers

2006 ◽  
Vol 29 (7) ◽  
pp. 1138-1143 ◽  
Author(s):  
Branislav M. Jacimovic ◽  
Srbislav B. Genic ◽  
Boris R. Latinovic
Keyword(s):  
Pressure Drop ◽  
Heat Exchangers ◽  
Finned Tube ◽  
Air Pressure

Research on air pressure drop in helically-finned tube heat exchangers

2006 ◽  
Vol 26 (5-6) ◽  
pp. 478-485 ◽  
Author(s):  
Srbislav B. Genic ◽  
Branislav M. Jacimovic ◽  
Boris R. Latinovic
Keyword(s):  
Pressure Drop ◽  
Heat Exchangers ◽  
Finned Tube ◽  
Air Pressure

Heat transfer and pressure drop characteristics of peripheral-finned tube heat exchangers

2012 ◽  
Vol 55 (11-12) ◽  
pp. 2835-2843 ◽  
Author(s):  
Bruno F. Pussoli ◽  
Jader R. Barbosa ◽  
Luciana W. da Silva ◽  
Massoud Kaviany
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Heat Exchangers ◽  
Finned Tube

FRTCOILS: A General Purpose Simulation Software for Design and Prediction of Thermal and Hydraulic Performance of Finned-Tube Compact Heat Exchangers

2007 ◽  
Author(s):  
Maung Naing Naing Tun ◽  
Nilufer Egrican
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Heat Exchangers ◽  
Water Solution ◽  
Finned Tube ◽  
Simulation Software ◽  
Operating Conditions ◽  
Object Oriented Programming ◽  
Compact Heat Exchangers ◽  
Cooling Coils

This paper presents computer software developed for rating and optimum selection of finned circular tubes compact heat exchangers with various coil geometries. The software is developed to use as a computing tool for commercial and R&D purposes in FRITERM A.S, an original equipment manufacturer (OEM) of finned tube heat exchangers. Finned-tube heat exchangers are highly utilized in refrigeration and process industries and heat transfer and pressure drop calculations are very important to manufactures and design engineers. For this purpose, a simulation and design software to predict the performance of finned-tube heat exchangers is presented. In finned-tube coils fin side fluid is air and tube side fluid can be water, oil, glycol water solution mixture and refrigerants. The analysis and rating of coils at dry and wet operating conditions are presented. Design and the most suitable selections of coils at the given parameters and design constraints from many different coil geometries are also performed in the software. User-friendly object-oriented programming C# is applied in developing the software. The software is developed in modular basic. Six modules are developed: Heating Coils, Cooling Coils, Condenser Coils, Steam Coils, Heat Recovery Coils and Evaporator (DX) Coils. REFPROP is also integrated in the software and all fluids’ thermal and transport properties are obtained from REFPROP. Heat transfer and pressure drop correlations available from literature are evaluated with recommendations. Simulated results are verified against experimental results.

Air side pressure drop in plate finned tube heat exchangers

2019 ◽  
Vol 99 ◽  
pp. 24-29 ◽  
Author(s):  
Saša Marković ◽  
Branislav Jaćimović ◽  
Srbislav Genić ◽  
Miloš Mihailović ◽  
Uroš Milovančević ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Heat Exchangers ◽  
Finned Tube ◽  
Side Pressure

Performance of Dehumidifying Heat Exchangers With and Without Wetting Coatings

1999 ◽  
Vol 121 (4) ◽  
pp. 1018-1026 ◽  
Author(s):  
K. Hong ◽  
R. L. Webb
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Pressure Drop ◽  
Transfer Coefficient ◽  
Heat Exchangers ◽  
Finned Tube ◽  
Fin Efficiency ◽  
Dry Heat ◽  
Reduction Methods ◽  
Wet Surface

Limited previous work has shown that use of special hydrophilic coatings will provide lower air pressure drop in finned tube heat exchangers operated under dehumidifying conditions. However, no detailed work has been reported on the effect of different coating types, or different fin surface geometries on the wet pressure drop. In this study, wind tunnel tests were performed on three different fin geometries (wavy, lanced, and louver) under wet and dry conditions. All dehumidification tests were done for fully wet surface conditions. For each geometry, the tests were performed on uncoated and coated heat exchangers. For all three fin geometries, the wet-to-dry pressure drop ratio was 1.2 at 2.5 m/s frontal air velocity. The coatings have no influence on the wet or dry heat transfer coefficient. However, the wet surface heat transfer coefficient was 10 to 30 percent less than the dry heat transfer coefficient, depending on the particular fin geometry. The effect of the fin press oil on wet pressure drop was also studied. If the oil contains a surfactant, good temporary wetting can be obtained on an uncoated surface; however, this effect is quickly degraded as the oil is washed from the surface during wet operation. This work also provides a critical assessment of data reduction methods for wet surface operation, including calculation of the fin efficiency.

Effects of biofouling on air-side heat transfer and pressure drop for finned tube heat exchangers

2009 ◽  
Vol 32 (5) ◽  
pp. 1032-1040 ◽  
Author(s):  
Hui Pu ◽  
Guo-liang Ding ◽  
Xiao-kui Ma ◽  
Hai-tao Hu ◽  
Yi-feng Gao
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Heat Exchangers ◽  
Finned Tube

Effect of Circuit Arrangement on the Performance of Plate Finned Tube Heat Exchangers Under Dehumidifying Conditions

1999 ◽  
Author(s):  
Min-Sheng Liu ◽  
Jin-Sheng Leu ◽  
Chi-Chuan Wang ◽  
Vince C. Mei
Keyword(s):  
Heat Conduction ◽  
Pressure Drop ◽  
Flow Pattern ◽  
Heat Exchangers ◽  
Cross Flow ◽  
Finned Tube ◽  
Parallel Flow ◽  
Pressure Drops ◽  
Flow Pattern Transition ◽  
Flow Circuit

Abstract This study experimentally investigates the effect of circuitry on the performance of plate finned tube evaporators. Experiments were carried out with the heat exchangers having 1-circuit arrangements. A total of six circuitry were examined in this study, including two counter-cross, two parallel-cross, and two z-shape arrangements. The results showed that the counter-cross arrangement gives the best performance. However, heat conduction along the fins may offset the benefits of the counter-cross arrangement. In addition, the pressure drop of refrigerant-side increased with frontal velocities. Among the six 1-circuit arrangements, the parallel-cross flow circuit would produce a larger pressure drop than other arrangements. However, for G = 200 kg/m2·s and parallel flow, the pressure drops decrease with increase of the frontal velocity. The unusual characteristics are likely related to the flow pattern transition subjected to heat addition. The location of refrigerant inlet does not significantly affect the performance of heat exchangers.

Prediction of heat transfer, pressure drop and entropy generation in shell and helically coiled finned tube heat exchangers

2018 ◽  
Vol 134 ◽  
pp. 277-291 ◽  
Author(s):  
Mohammad Sepehr ◽  
Seyed Saeed Hashemi ◽  
Mohammad Rahjoo ◽  
Vahid Farhangmehr ◽  
Ashkan Alimoradi
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Entropy Generation ◽  
Heat Exchangers ◽  
Finned Tube ◽  
Transfer Pressure
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