Mitigation of air flow maldistribution in evaporators

Bach, Christian K.; Groll, Eckhard A.; Braun, James E.; Horton, W. Travis

doi:10.1016/j.applthermaleng.2014.08.010

Cited by 13 publications

(2 citation statements)

References 7 publications

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“…Yaïci et al [2] proposed an optimization study by using a three-dimensional CFD simulation software. Similarly, Bach et al [3] modified the configuration of a two-circuits evaporator in order to mitigate the effects of the airflow maldistribution on its performance. They implemented the evaporator model in ACHP [4] taking into account the non-uniformity of the air distribution.…”

Section: Introductionmentioning

confidence: 99%

Development of an experimental method to generate a non-uniform air flow distribution at the inlet of a heat exchanger

Alessandro,

Santiago,

José Miguel

IX Congreso Nacional De Ingeniería Termodinámica

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As already demonstrated by many authors, the non-uniformity of the air distribution at the inlet of both condensers and evaporators entails not negligible performance degradation. Its experimental quantification is mainly complicated by the difficulties connected to the air velocity measurement in a traditional air-conditioning installation. For this reason, many works are supported by the application of CFD models or others simulation tools. In order to analyze experimentally the effect of the nonuniform air distribution on the performance of a condenser, in this work a simple method for generating a specific air velocity profile at the inlet of a heat exchanger will be presented. It consist in allocating several filters along the heat exchanger height. Once characterized the filter, identifying the relation between the length of the filters, the pressure drop and the air velocity, any type of air velocity profile can be generated. The method presents high flexibility and allows being used with any typology of heat exchanger. In this work, the method will be used for generating a non-uniform air velocity profile at the inlet of two condenser: a round tube plate fins heat exchanger and a microchannel heat exchanger. The results show that, with a specific distribution of the filters, the nonuniform air velocity profile characterizing the A-shape condensation units has been reproduced with a very good agreement.

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Section: Introductionmentioning

confidence: 99%

Development of an experimental method to generate a non-uniform air flow distribution at the inlet of a heat exchanger

Alessandro,

Santiago,

José Miguel

IX Congreso Nacional De Ingeniería Termodinámica

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show abstract

“…This so negative result pushed the author to identify a new strategy for limiting such high performance reduction, named hybrid evaporator, which allowed recovering up to the 94% of the heat degradation in comparison with the original configuration. In 2014, Bach et al (2014) presented a new numerical study aimed at the mitigation of the effects of the air maldistribution on the performance of a round-tube evaporator.…”

Section: Airflow Maldistribution: Experimental and Numerical Studiesmentioning

confidence: 99%

Analysis of the condensation process and air maldistribution in finned tube and minichannel condensers

Pisano¹

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Optimization of a microchannel heat sink with surrogate model and genetic algorithm

Zongyi,

Huaishuang,

Shifeng

et al. 2024

Applied Thermal Engineering

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Mitigation of air flow maldistribution in evaporators

Cited by 13 publications

References 7 publications

Development of an experimental method to generate a non-uniform air flow distribution at the inlet of a heat exchanger

Development of an experimental method to generate a non-uniform air flow distribution at the inlet of a heat exchanger

Analysis of the condensation process and air maldistribution in finned tube and minichannel condensers

Optimization of a microchannel heat sink with surrogate model and genetic algorithm

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