Oval Finned Tube Condenser and Design Pressure Limits

2001 ◽  
Vol 8 (3) ◽  
pp. 147-158 ◽  
Author(s):  
Ralph L. Webb ◽  
Ajay Iyengar
Keyword(s):  
Finned Tube ◽  
Tube Condenser ◽  
Design Pressure

Finned-tube condenser design optimization using thermoeconomic isolation

2010 ◽  
Vol 30 (14-15) ◽  
pp. 2096-2102 ◽  
Author(s):  
Susan W. Stewart ◽  
Samuel V. Shelton
Keyword(s):  
Design Optimization ◽  
Finned Tube ◽  
Tube Condenser

Transient response of finned-tube condenser in household refrigerators

2006 ◽  
Vol 26 (14-15) ◽  
pp. 1725-1729 ◽  
Author(s):  
S. Porkhial ◽  
B. Khastoo ◽  
M.R. Modarres Razavi
Keyword(s):  
Transient Response ◽  
Finned Tube ◽  
Tube Condenser

An Experiment and Simulation Study on Performance of Finned Tube Condenser

2014 ◽  
Vol 986-987 ◽  
pp. 814-818
Author(s):  
Hai Jie Qin ◽  
Wei Ying Zhu ◽  
Wei Zhong Li
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Performance Test ◽  
Finned Tube ◽  
Hot Water ◽  
Programming Tools ◽  
C Programming ◽  
Test Platform ◽  
Experiment And Simulation ◽  
Tube Condenser

In this paper, a finned tube condenser performance test platform by using hot water as heat transfer medium in the pipe was established. The air side correlations of pressure drop and heat transfer were acquired based on lots of testing datas.A segment by segment model of the finned tube condenser used in these correlations was proposed and a simulation program was developed by using Visual C++ programming tools. Experiment and simulation results show that the air side correlations of pressure drop and heat transfer are fitting well with experimental datas. The deviation between the experimental and calculated values is within ±5%.The deviation of Nu Number is within ±10% and the deviation of the pressure loss is within±15%.

A discussion about the methodology for validating a model of a finned-tube condenser considering different correlations for the heat transfer coefficients and pressure drop

2015 ◽  
Vol 21 (5) ◽  
pp. 585-594
Author(s):  
Alessandro Pisano ◽  
Santiago Martinez-Ballester ◽  
José Miguel Corberán ◽  
Fernando Hidalgo Monpeán ◽  
Fernando Illán Gómez ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Finned Tube ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Tube Condenser

Thermal and economical optimization for a finned-tube, air-cooled condenser design of a roof-top bus air-conditioning system

2007 ◽  
Vol 221 (11) ◽  
pp. 1363-1375 ◽  
Author(s):  
M Khamis Mansour ◽  
M N Musa ◽  
M N Wan Hassan
Keyword(s):  
Air Conditioning ◽  
Optimization Technique ◽  
Finned Tube ◽  
Frontal Area ◽  
Coefficient Of Performance ◽  
Design Parameters ◽  
Optimization Approach ◽  
Air Conditioning System ◽  
Economical Optimization ◽  
Tube Condenser

The current paper presents a methodology of a design optimization technique that can be useful in assessing the best configuration of a finned-tube condenser, using a thermal and economical optimization approach. The assessment has been carried out on an air-cooled finned-tube condenser of a vapour compression cycle for a roof-top bus air-conditioning system at a specified cooling capacity. The methodology has been conducted by studying the effect of some operational and geometrical design parameters for the condenser on the entire cycle exergy destruction or irreversibility, air-conditioning system coefficient of performance (COP), and total annual cost. The heat exchangers for the bus air-conditioning system are featured by a very compact frontal area due to the stringent space limitations and structure standard for the system installation. Therefore, the current study also takes in its account the effect of the varying design parameters on the condenser frontal area. The irreversibility due to heat transfer across the stream-to-stream temperature-difference and due to frictional pressure-drops is calculated as a function of the design parameters. A cost function is introduced, defined as the sum of two contributions, the investment expense of the condenser material and the system compressor, and the operational expense of air-conditioning system, which is usually driven by an auxiliary engine or coupled with the main bus engine. The optimal trade-off between investment and operating cost is therefore investigated. A numerical example is discussed, in which, a comparison between the commercial condenser design and optimal design configuration has been presented in terms of the system COP and condenser material cost. The results show that a significant improvement can be obtained for the optimal condenser design compared to that of the commercial finned-tube condenser, which is designed based on the conventional values of the design parameters.

Design Study Comparison of Plain Finned Versus Louvered Finned-Tube Condenser Heat Exchangers

2003 ◽  
Author(s):  
Susan W. Stewart ◽  
Sam V. Shelton
Keyword(s):  
Heat Transfer ◽  
Optimum Design ◽  
System Performance ◽  
Air Conditioning ◽  
Finned Tube ◽  
Design Parameters ◽  
Air Conditioning System ◽  
Frictional Pressure Drop ◽  
Residential Air Conditioning ◽  
Tube Condenser

Enhanced fins are widely used in residential air conditioning system finned-tube condenser designs. While this heat transfer augmentation technique increases the heat transfer coefficient in the heat exchanger, it also increases the air side frictional pressure drop. These two effects compete with each other, making it difficult to determine the relative goodness between plain fin versus enhanced fin designs with realistic constraints. In the past, this design tradeoff has been largely determined by experimental trial and error or heuristic figures of merit. No studies are available showing the effect of fin augmentation on overall system performance under consistent cost and frontal area constraints. The residential air conditioning system model calculates all component and system performance parameters. The condenser design requires the specification of approximately ten design parameters. A search method is used to vary these ten parameters and reach an optimum design based on a COP (efficiency) figure-of-merit with condenser cost and other appropriate constraints. It was found that when optimized, louvered fin designs always show better system performance than the optimum plain fin design for the cases studied. However a decrease in system efficiency can result if louvers are merely added to a plain fin optimum design.

Investigation of heat transfer in finned-tube condenser-evaporators

1985 ◽  
Vol 21 (12) ◽  
pp. 590-593
Author(s):  
V. E. Poznyak ◽  
V. N. Savel'ev
Keyword(s):  
Heat Transfer ◽  
Finned Tube ◽  
Tube Condenser

Convective heat transfer of a single annually finned-tube condenser

2014 ◽  
Vol 24 (8) ◽  
pp. 1696-1714
Author(s):  
Z.X. Yuan ◽  
L. Chen
Keyword(s):  
Heat Transfer ◽  
Friction Factor ◽  
Flow Resistance ◽  
Unit Length ◽  
Finned Tube ◽  
Influential Factor ◽  
Content Type ◽  
Fin Thickness ◽  
Fin Spacing ◽  
Tube Condenser

Purpose – The purpose of this paper is to study the thermal and flow characteristics of a single annually finned-tube condenser. The velocity and the temperature field inside the fin channel are revealed. Changes of the heat transfer and the flow resistance for typical fin configurations are analyzed. The optimal combinations of the fin dimension in terms of the enhancement of heat transfer are suggested. Design/methodology/approach – The problem has been numerically investigated with the FLUENT software. K-ɛ model is applied in the solution of the turbulent cases. The local and the average feature of the thermal performance and the friction factor are determined. Furthermore, the effect of the fin spacing, the fin height, and the fin thickness on the heat transfer and the flow resistance are verified. Findings – The numerical results reveal that the fin spacing is the most influential factor of all fin dimensions not only to the heat transfer but also to the flow resistance. Both the heat transfer and the flow resistance are compared with those related data available in the public literature. On the other hand, the fin height and the fin thickness affect the heat transfer of the condenser in a much less significant way in comparison to that of the fin spacing. Originality/value – This paper provides some meaningful information of the fin-dimensional effect on the heat transfer and the flow resistance for a single finned tube condenser. For such kind of heat exchanger, the heat transfer coefficient, the friction factor, and the heat transfer amount per unit length tube are all important to describe the performance feature.

HEAT AND MASS TRANSFER AND RESISTANCE CHARACTERISTICS OF EVAPORATIVE AIR COOLER WITH HIGH FINNED-TUBE BUNDLES

2018 ◽  
Vol 49 (17) ◽  
pp. 1705-1720 ◽  
Author(s):  
Qing Zhang ◽  
Xuesheng Wang ◽  
Weicheng Ruan ◽  
Qinzhu Chen ◽  
Zilong Liu
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Finned Tube ◽  
Tube Bundles ◽  
Air Cooler
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