A novel personal cooling system (PCS) incorporated with phase change materials (PCMs) and ventilation fans: An investigation on its cooling efficiency
(2015) In Journal of Thermal Biology 52. p.137-146- Abstract
- Personal cooling systems (PCS) have been developed to mitigate the impact of severe heat stress for humans working in hot environments. It is still a great challenge to develop PCSs that are portable, inexpensive, and effective. We studied the performance of a new hybrid PCS incorporating both ventilation fans and phase change materials (PCMs). The cooling efficiency of the newly developed PCS was investigated on a sweating manikin in two hot conditions: hot humid (HH, 34 °C, 75% RH) and hot dry (HD, 34 °C, 28% RH). Four test scenarios were selected: fans off with no PCMs (i.e., Fan-off, the CONTROL), fans on with no PCMs (i.e., Fan-on), fans off with fully solidified PCMs (i.e., PCM+Fan-off), and fans on with fully solidified PCMs (i.e.,... (More)
- Personal cooling systems (PCS) have been developed to mitigate the impact of severe heat stress for humans working in hot environments. It is still a great challenge to develop PCSs that are portable, inexpensive, and effective. We studied the performance of a new hybrid PCS incorporating both ventilation fans and phase change materials (PCMs). The cooling efficiency of the newly developed PCS was investigated on a sweating manikin in two hot conditions: hot humid (HH, 34 °C, 75% RH) and hot dry (HD, 34 °C, 28% RH). Four test scenarios were selected: fans off with no PCMs (i.e., Fan-off, the CONTROL), fans on with no PCMs (i.e., Fan-on), fans off with fully solidified PCMs (i.e., PCM+Fan-off), and fans on with fully solidified PCMs (i.e., PCM+Fan-on). It was found that the addition of PCMs provided a 54∼78 min cooling in HH condition. In contrast, the PCMs only offered a 19–39 min cooling in HD condition. In both conditions, the ventilation fans greatly enhanced the evaporative heat loss compared with Fan-off. The hybrid PCS (i.e., PCM+Fan-on) provided a continuous cooling effect during the three-hour test and the average cooling rate for the whole body was around 111 and 315 W in HH and HD conditions, respectively. Overall, the new hybrid PCS may be an effective means of ameliorating symptoms of heat stress in both hot-humid and hot-dry environments. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7851940
- author
- Lu, Yehu ; Wei, Fanru ; Lai, Dandan ; Shi, Wen ; Wang, Faming ; Gao, Chuansi LU and Song, Guowen
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Ventilation fans, Phase change material, Cooling efficiency, Personal cooling system
- in
- Journal of Thermal Biology
- volume
- 52
- pages
- 137 - 146
- publisher
- Elsevier
- external identifiers
-
- pmid:26267508
- wos:000360773300017
- scopus:84936934703
- pmid:26267508
- ISSN
- 0306-4565
- DOI
- 10.1016/j.jtherbio.2015.07.002
- language
- English
- LU publication?
- yes
- id
- 40394b73-02b9-49ac-8a47-fdaf10c76442 (old id 7851940)
- date added to LUP
- 2016-04-01 14:40:24
- date last changed
- 2022-04-22 04:35:17
@article{40394b73-02b9-49ac-8a47-fdaf10c76442,
abstract = {{Personal cooling systems (PCS) have been developed to mitigate the impact of severe heat stress for humans working in hot environments. It is still a great challenge to develop PCSs that are portable, inexpensive, and effective. We studied the performance of a new hybrid PCS incorporating both ventilation fans and phase change materials (PCMs). The cooling efficiency of the newly developed PCS was investigated on a sweating manikin in two hot conditions: hot humid (HH, 34 °C, 75% RH) and hot dry (HD, 34 °C, 28% RH). Four test scenarios were selected: fans off with no PCMs (i.e., Fan-off, the CONTROL), fans on with no PCMs (i.e., Fan-on), fans off with fully solidified PCMs (i.e., PCM+Fan-off), and fans on with fully solidified PCMs (i.e., PCM+Fan-on). It was found that the addition of PCMs provided a 54∼78 min cooling in HH condition. In contrast, the PCMs only offered a 19–39 min cooling in HD condition. In both conditions, the ventilation fans greatly enhanced the evaporative heat loss compared with Fan-off. The hybrid PCS (i.e., PCM+Fan-on) provided a continuous cooling effect during the three-hour test and the average cooling rate for the whole body was around 111 and 315 W in HH and HD conditions, respectively. Overall, the new hybrid PCS may be an effective means of ameliorating symptoms of heat stress in both hot-humid and hot-dry environments.}},
author = {{Lu, Yehu and Wei, Fanru and Lai, Dandan and Shi, Wen and Wang, Faming and Gao, Chuansi and Song, Guowen}},
issn = {{0306-4565}},
keywords = {{Ventilation fans; Phase change material; Cooling efficiency; Personal cooling system}},
language = {{eng}},
pages = {{137--146}},
publisher = {{Elsevier}},
series = {{Journal of Thermal Biology}},
title = {{A novel personal cooling system (PCS) incorporated with phase change materials (PCMs) and ventilation fans: An investigation on its cooling efficiency}},
url = {{https://lup.lub.lu.se/search/files/4102594/7864632.pdf}},
doi = {{10.1016/j.jtherbio.2015.07.002}},
volume = {{52}},
year = {{2015}},
}