Experimental evaluation of a solid desiccant system integrated with cross flow Maisotsenko cycle evaporative cooler

Shahzad, Muhammad Kashif; Chaudhary, Ghulam Qadar; Ali, Muzaffar; Sheikh, Nadeem Ahmed; Khalil, Muhammad; Rashid, Tanzeel ur

doi:10.1016/j.applthermaleng.2017.09.105

Cited by 89 publications

(7 citation statements)

References 19 publications

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“…Desiccant cooling systems in different configurations with an indirect evaporative air cooling have been investigated by many authors in the past. Kashif Shahzad et al [52] compared a solid desiccant dehumidifier integrated with a cross flow Maisotsenko cycle heat and mass exchanger (HMX) with a traditional desiccant air conditioning system integrated with a direct evaporative cooler under different operating conditions and the same process and return airflow rates. It was found out that for the same supply airflow and regenerative airflow parameters, the first system was approximately 60-65% more efficient than the second one.…”

Section: Desiccant Systemsmentioning

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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Section: Desiccant Systemsmentioning

confidence: 99%

Review of Dew Point Evaporative Cooling Technology for Air Conditioning Applications

Pacak

Worek

2021

Applied Sciences

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“…A combination of dehumidification and evaporative cooling could greatly enhance the cooling capacity and energy efficiency by 70% to 135%, respectively, according to the moisture removal rate. Kashif Shahzad et al [88] conducted an experimental evaluation of a solid desiccant M-cycle IEC cooling (MC-DAC) system. The system was compared with a typical conventional solid desiccant evaporative cooling (DAC) system.…”

Section: Integrated With M-cycle Iecmentioning

confidence: 99%

Evaporative Cooling Integrated with Solid Desiccant Systems: A Review

et al. 2021

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Evaporative cooling technology (ECT) has been deemed as an alternative to the conventional vapor-compression air conditioning system for dry climates in recent years due to its simple structure and low operating cost. Generally speaking, the ECT includes two types of different technologies, direct evaporative cooling (DEC) and indirect evaporative cooling (IEC). Both technologies can theoretically reduce the air temperature to the wet-bulb temperature of outdoor air. The major difference between these two technologies is that DEC will introduce extra moisture to the supply air while IEC will not. The enhanced IEC, Maisotsenko-cycle (M-cyle) IEC, can even bring down the air temperature to the dew point temperature. The ECT integrated with solid desiccant systems, i.e., solid desiccant-assisted evaporative cooling technologies (SDECT), could make the technology applicable to a wider range of weather conditions, e.g., weather with high humidity. In this paper, the recent development of various evaporative cooling technologies (ECT), solid desiccant material and the integration of these two technologies, the SDECT, were thoroughly reviewed with respect to their configuration, optimization and desiccant unit improvement. Furthermore, modeling techniques for simulating SDECT with their pros and cons were also reviewed. Potential opportunities and research recommendations were indicated, which include improving the structure and material of M-cycle IEC, developing novel desiccant material and optimizing configuration, water consumption rate and operation strategy of SDECT system. This review paper indicated that the SDECT system could be a potential replacement for the conventional vapor-compressed cooling system and could be applied in hot and humid environments with proper arrangements.

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“…Kashif Shahzad et al. 18 analyzed a solid desiccant integrated cross flow M-cycle cooling system. The ambient temperature ranged from 25 °C to 45 °C, and humidity ratio from 12 g kg −1 d.a.…”

Section: Literature Surveymentioning

confidence: 99%

Experimental and simulation study of the performance of a desiccant loop cooling system

Venkatesh

Ganesh

Suriyaprakash

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part A:

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The paper presents experimental data and results from a prediction tool for the performance of a desiccant loop cooling system. The experiments are performed under a variety of high humidity and hot ambient conditions and the system performance is described. One of the experimental conditions is typical of many Indian cities and the systems appropriate for those cities are established. A simulation program that can predict the performance of the desiccant loop is developed. The simulation results show that this system can work as effectively as vapor compression air-conditioning for certain ambient conditions whereas it can function as a pre-cooler to a vapor compression system under more severe conditions, resulting in a reduced power consumption. The results presented in the paper give a guideline to practicing engineers as to when a desiccant loop cooling system would be useful. A simple payback analysis and a lifecycle cost analysis shows that a desiccant cooling system with a waste heat recovery recuperator is an economically viable investment.

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Experimental evaluation of a solid desiccant system integrated with cross flow Maisotsenko cycle evaporative cooler

Cited by 89 publications

References 19 publications

Review of Dew Point Evaporative Cooling Technology for Air Conditioning Applications

Review of Dew Point Evaporative Cooling Technology for Air Conditioning Applications

Evaporative Cooling Integrated with Solid Desiccant Systems: A Review

Experimental and simulation study of the performance of a desiccant loop cooling system

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