DESIGN OF A NOVEL DEW POINT INDERECT EVAPORATVE COOLER: PRELIMINARY EXPERIMENTAL INVESTIGATIONS

Autores/as

  • Alessandra Urso Università degli Studi di CATANIA https://orcid.org/0000-0003-2611-9088
  • Eloy Velasco Gómez Universidad de Valladolid
  • Ana Tejero González Universidad de Valladolid
  • Francesco Nocera Università degli Studi di CATANIA
  • Gianpiero Evola Università degli Studi di CATANIA
  • Vincenzo Costanzo Università degli Studi di CATANIA
  • Manuel Andrés Chicote Universidad de Valladolid

DOI:

https://doi.org/10.21134/0rb24231

Palabras clave:

Dew point, Indirect evaporative cooling, experimental investigation, cooling capacity, thermal effectiveness

Resumen

Evaporative coolers may represent a promising alternative to conventional cooling technologies based on vapor compression systems. Indeed, they present lower production and operative costs, as well as lower environmental impact. The present study aims to develop a novel Dew Point Indirect Evaporative Cooler (DPIEC), by combining simplicity, hence low production costs, and higher cooling performance. The design proposed has mixed flow configuration and is made of polycarbonate plate covered with cotton cloth as wicking material. Two prototypes with different length are experimentally tested for two different water distributors. The performance of the novel DPIEC is evaluated and compared in terms of temperature drop, dew-point effectiveness, cooling capacity and compactness. The results show that the long prototype performs better in terms of temperature drop and dew point effectiveness, but  yields lower cooling capacity and is less compact. In addition, it is observed that the distributor that supplies water over the system performs better, independently on the prototype. These results can serve as reference for future designs of mixed-flow DPIEC.

Referencias

Duan Z, Wang M, Dong X, Liu J, Zhao X, Experimental and numerical investigation of wicking and evaporation performance of fibrous materials for evaporative cooling, Energy Build, vol. 255, Jan. 2022, doi: 10.1016/j.enbuild.2021.111675.

Pezzutto S, Quaglini G, Riviere P, Kranzl L, Novelli A, Zambito A, Wilczynski E, Screening of Cooling Technologies in Europe: Alternatives to Vapour Compression and Possible Market Developments, Sustainability (Switzerland), vol. 14, no. 5, Mar. 2022, doi: 10.3390/su14052971.

Abdullah S, Zubir MNBM, Muhamad MR, Newaz KMS, Öztop HF, Alam MS, Shaikh K, Technological development of evaporative cooling systems and its integration with air dehumidification processes: A review, Energy and Buildings, vol. 283. Elsevier Ltd, Mar. 15, 2023. doi: 10.1016/j.enbuild.2023.112805.

Lai L, Wang X, Hu E, Choon Ng K, A vision of dew point evaporative cooling: Opportunities and challenges, Appl Therm Eng, vol. 244, p. 122683, May 2024, doi: 10.1016/j.applthermaleng.2024.122683.

Ma X, Shi W, Yang H, Spray parameter analysis and performance optimization of indirect evaporative cooler considering surface wettability, Journal of Building Engineering, vol. 82, Apr. 2024, doi: 10.1016/j.jobe.2023.108175.

Shi W, Yang H, Ma X, Liu X, A novel indirect evaporative cooler with porous media under dual spraying modes: A comparative analysis from energy, exergy, and environmental perspectives, Journal of Building Engineering, vol. 76, Oct. 2023, doi: 10.1016/j.jobe.2023.106874.

Zhu M, Lv J, Zhou B, Xi W, Wang L, Hu E, Study on the performance of a novel dew-point evaporative cooler based on fiber membrane automatic wicking, Sci Technol Built Environ, vol. 29, no. 5, pp. 574–587, 2023, doi: 10.1080/23744731.2023.2194194.

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Publicado

2024-10-22