Experimental investigation of header configuration on flow maldistribution in plate-fin heat exchanger

Jiao, Anjun; Zhang, Rui; Jeong, Sangkwon

doi:10.1016/s1359-4311(03)00057-7

Cited by 108 publications

(48 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Marchitto et al have also indicated that uneven distribution in heat exchangers is a cause of reduction in both thermal and fluid-dynamic performances [10]. Jiao, Zhang [11] have indicated that flow maldistribution can be classified into two types, i.e. gross maldistribution and passageto-passage maldistribution [11].…”

Section: Refrigerant Maldistributionmentioning

confidence: 99%

“…Jiao, Zhang [11] have indicated that flow maldistribution can be classified into two types, i.e. gross maldistribution and passageto-passage maldistribution [11]. Passage-to-passage flow maldistribution occurs due to manufacturing tolerances, fouling, and frosting of condensable impurities, while gross flow maldistribution is mostly related to improper heat exchanger entrance/exit configuration, such as the poor design of the header and distributor configuration [11].…”

Section: Refrigerant Maldistributionmentioning

confidence: 99%

“…gross maldistribution and passageto-passage maldistribution [11]. Passage-to-passage flow maldistribution occurs due to manufacturing tolerances, fouling, and frosting of condensable impurities, while gross flow maldistribution is mostly related to improper heat exchanger entrance/exit configuration, such as the poor design of the header and distributor configuration [11]. The flow maldistribution problem becomes even worse in compact heat exchangers such as the PFC, which has multiple small channels.…”

Section: Refrigerant Maldistributionmentioning

confidence: 99%

“…They recommended installing a uniformly-perforated grid in the inlet header, which could make the distribution more even. Jiao, Zhang [11] investigated the effects of the inlet pipe diameter, the first header's diameter of equivalent area and the second header's diameter of equivalent area on the flow maldistribution in a plate-fin heat exchanger [11]. The experimental studies showed that the flow velocity distribution became more uniform when the first header's diameter of equivalent area was equal to the second header's diameter of equivalent area.…”

Section: Analysis Of the Refrigerant Maldistribution Problemmentioning

confidence: 99%

See 3 more Smart Citations

A Review of Refrigerant Maldistribution

Tang¹,

Chng²,

Chin³

2014

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

In recent years, conservation of energy has become a challenging issue in air-conditioning applications. In order to overcome this issue, many researchers have recommended the use of a Parallel Flow Condenser and a low Global Warming Potential and Ozone Depletion Potential refrigerant, such as R32, in air conditioning systems. However, PFC faces the critical challenge of flow maldistribution in the tubes. This literature review mainly examines the refrigerant maldistribution problem which has been investigated by previous researchers. It was found that many of the researchers did not properly analyse the influence of flow maldistribution profiles on the performance degradation of heat exchangers. In order to have a comprehensive analysis of tube-side maldistribution in Parallel Flow microchannel heat exchangers, it is recommended that the influence of the higher statistical moments of the probability density function of the flow maldistribution profiles on performance degradation be quantified. Additionally, R32 maldistribution should be analysed and compared with R410A, which is the current commonly used refrigerant in air conditioning units. Moreover, in order to have a realistic simulation of the effect of refrigerant flow maldistribution profiles on performance degradation of heat exchangers, the effect of superheat and sub-cooling must be analysed.

show abstract

Section: Refrigerant Maldistributionmentioning

confidence: 99%

Section: Refrigerant Maldistributionmentioning

confidence: 99%

Section: Refrigerant Maldistributionmentioning

confidence: 99%

Section: Analysis Of the Refrigerant Maldistribution Problemmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Refrigerant Maldistribution

Tang¹,

Chng²,

Chin³

2014

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

show abstract

“…Jiao et al [18] investigated experimentally the effect of various geometry parameters including the inlet pipe diameter, the first header's diameter, and the second header's diameter. The authors reported that the flow distribution can be significantly improved by optimum design of header configuration.…”

Section: Introductionmentioning

confidence: 99%

Optimization Design by Coupling Computational Fluid Dynamics and Genetic Algorithm

Oh¹,

Chien²

2018

Computational Fluid Dynamics - Basic Instruments and Applications in Science

View full text Add to dashboard Cite

Nowadays, optimal design of equipment is one of the most practical issues in modem industry. Due to the requirements of deploying time, reliability, and design cost, better approaches than the conventional ones like experimental procedures are required. Moreover, the rapid development of computing power in recent decades opens a chance for researchers to employ calculation tools in complex configurations. In this chapter, we demonstrate a kind of modern optimization method by coupling computational fluid dynamics (CFD) and genetic algorithms (GAs). The brief introduction of GAs and CFD package OpenFOAM will be performed. The advantage of this approach as well as the difficulty that we must tackle will be analyzed. In addition, this chapter performs a study case in which an automated procedure to optimize the flow distribution in a manifold is established. The design point is accomplished by balancing the liquid-phase flow rate at each outlet, and the controlled parameter is a dimension of baffle between each channel. Using this methodology, we finally find a set of results improving the distribution of flow.

show abstract

Flow distribution property of the constructal distributor and heat transfer intensification in a mini heat exchanger

Fan¹,

Boichot²,

Goldin³

et al. 2008

AIChE Journal

View full text Add to dashboard Cite

International audienceThis article reports a numerical and experimental study on flow maldistribution and heat transfer intensification in a mini heat exchanger with constructal distributor/collector integrated. The flow distribution characteristics of the constructal component functioning as a fluid distributor or as a fluid collector have been investigated and compared using computational fluid dynamics simulations. An experimental setup is designed and constructed for thermal and hydraulic performances tests. The effects of various assembly configurations on heat transfer characteristics and pressure drops are discussed. The results indicate that the integration of one constructal collector at the outlet of the heat exchanger can achieve almost uniform flow distribution and consequently better intensify the heat transfer. It is also the most advantageous configuration based on a balanced consideration of heat transfer intensification and pump power consumption under the investigation conditions

show abstract

Experimental investigation of header configuration on flow maldistribution in plate-fin heat exchanger

Cited by 108 publications

References 10 publications

A Review of Refrigerant Maldistribution

A Review of Refrigerant Maldistribution

Optimization Design by Coupling Computational Fluid Dynamics and Genetic Algorithm

Flow distribution property of the constructal distributor and heat transfer intensification in a mini heat exchanger

Contact Info

Product

Resources

About