Comparative study of heat and mass exchanging materials for indirect evaporative cooling systems

2008 ◽  
Vol 43 (11) ◽  
pp. 1902-1911 ◽  
Author(s):  
X. Zhao ◽  
Shuli Liu ◽  
S.B. Riffat
2017 ◽  
Vol 140 ◽  
pp. 467-474 ◽  
Author(s):  
Stefano De Antonellis ◽  
Cesare Maria Joppolo ◽  
Calogero Leone ◽  
Paolo Liberati ◽  
Samanta Milani

2021 ◽  
Vol 11 (3) ◽  
pp. 934
Author(s):  
Anna Pacak ◽  
William Worek

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.


Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3374 ◽  
Author(s):  
Yugang Wang ◽  
Xiang Huang ◽  
Li Li

This paper presents a comparative study of the cross-flow regenerative heat and mass exchanger (HMX) and the conventional cross-flow HMX for indirect evaporative cooling (IEC) with numerical methods. The objective of this study is mainly to clarify the applicability of the two HMXs. The numerical model was built and validated by existing experimental data. The difference in heat and mass transfer between the two HMXs was revealed by analyzing the change of the temperature and moisture content of the air, and the influence of the main operating parameters on the cooling performance of the HMXs was analyzed. In the typical operating conditions, when the HMXs are used alone, the cooling performance of the regenerative HMX is better than that of the conventional HMX under low supply air flow rate. When the HMXs are used in the multistage evaporative cooling systems with high supply air flow rate, the conventional HMX is more suitable as the first stage of the system to pre-cool the supply air, while the regenerative HMX is more suitable as the second stage to re-cool the supply air.


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