Performance comparison between counter- and cross-flow indirect evaporative coolers for heat recovery in air conditioning systems in the presence of condensation in the product air channels

Pandelidis, Demis; Cichoń, Aleksandra; Pacak, Anna; Anisimov, Sergey; Drąg, Paweł

doi:10.1016/j.ijheatmasstransfer.2018.10.134

Cited by 41 publications

(11 citation statements)

References 18 publications

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“…The mathematical model accuracy for the counter-flow IEC exchanger, under condensation state, was verified by authors with experimental data obtained at the dedicated test station [8]. It was concluded that the model can predict outlet product airflow temperature with average accuracy (mean absolute percentage error) equal to 2.5% and outlet product airflow relative humidity with average accuracy equal to 0.9%.…”

Section: Methodsmentioning

confidence: 73%

Application of the counter- and cross-flow indirect evaporative cooler for heat recovery under different climate conditions

et al. 2019

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This paper investigates the potential of applying an indirect evaporative cooler for heat recovery in air-conditioning system under various climate conditions. The counter-and cross-flow configurations of the indirect evaporative exchanger are addressed in this study in terms of their performance and applicability for different climate zones. Presented analyses are carried out with original ε-NTU model considering condensation from the product airflow and validated against experimental data. It was stated that both configurations of the indirect evaporative exchanger have a high application potential to be employed as a heat recovery device under most climatic parameters. Additionally for each climate zone considered in this paper, the airconditioning system that consists of either the indirect evaporative exchanger and vapor-compression cooler or indirect evaporative exchanger and direct evaporative cooler is proposed.

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Section: Methodsmentioning

confidence: 73%

Application of the counter- and cross-flow indirect evaporative cooler for heat recovery under different climate conditions

et al. 2019

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“…They optimized the channel gap and height to length ratio in both cases. The second paper [32] was published by Pandelidis et al, and it includes mathematical models and validation on the test station. The results showed that the counter-flow configuration has higher sensible and latent cooling potential than the cross-flow unit.…”

Section: Modelling the Dpiec Performancementioning

confidence: 99%

Review of Dew Point Evaporative Cooling Technology for Air Conditioning Applications

Pacak

Worek

2021

Applied Sciences

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Indirect evaporative cooling has the potential to significantly improve the natural environment. It follows from a significant reduction in electricity consumption in the hot period, and hence lower operating costs for cooling systems. This paper presents the current state of knowledge and research directions on dew point indirect evaporative cooling. It was found that researchers focus on the development of dew point indirect evaporative coolers (DPIEC) by improving its design, geometry, water distribution, and new porous materials implementation. To evaluate the performance of new types of DPIEC, different methods are used by the scientists. Finally, optimized devices are studied in terms of their performance in different systems, like hybrid and desiccant systems, considering different climate conditions. Potential directions of development of evaporative technologies were indicated, such as increasing the coefficient of performance of solid desiccant evaporative cooling systems, developing novel geometry, and efficient water distribution, including development of porous materials.

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“…Min et al (2019b) developed the IEC model for predicting the annual energy-saving potential of IEC system in high temperature and humidity areas. Pandelidis et al (2019) studied the heat and mass transfer process of ion-exchange membrane containing condensation. Guo et al (2020) cross-flow considering condensation.…”

Section: Introductionmentioning

confidence: 99%

Heat and mass transfer model optimization and annual energy efficiency analysis for energy recovery indirect evaporative cooling

Liu

Guo

et al. 2021

Build. Simul.

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Indirect evaporative cooling (IEC) is a kind of high efficiency, energy-saving and environmental protection cooling technology, which has been widely used in data centers and other fields in recent years. In this paper, the optimized two-dimensional non-condensation state model of indirect evaporative cooling was proposed. Meanwhile the computer program was updated to solve the developed mathematical model under variable fresh air conditions. The optimized model was verified by the experimental data, and the maximum deviation was only 4.6%. Based on the modified model and the annual hourly meteorological parameters in Tianjin, China, it was analyzed the optimal heat transfer area of IEC used as fresh air pre-cooling unit under various air volumes to provide references for system design and equipment selection. Finally, taking an IEC-primary return air conditioning system of a gymnasium as an example, the hourly energy-saving effect of whole year was simulated by the developed IEC model. The simulation results showed that IEC could control the fresh air temperature below 27 °C and the moisture content below 18 g/kg throughout the year, and undertook 102.6% of the total fresh air cooling load. The findings are useful in future system optimization and design of IEC equipment.

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Performance comparison between counter- and cross-flow indirect evaporative coolers for heat recovery in air conditioning systems in the presence of condensation in the product air channels

Cited by 41 publications

References 18 publications

Application of the counter- and cross-flow indirect evaporative cooler for heat recovery under different climate conditions

Application of the counter- and cross-flow indirect evaporative cooler for heat recovery under different climate conditions

Review of Dew Point Evaporative Cooling Technology for Air Conditioning Applications

Heat and mass transfer model optimization and annual energy efficiency analysis for energy recovery indirect evaporative cooling

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