Effect of different evacuation pressures on thermal performance of vertically placed flat-plate pulsating heat pipe. Issue 3 (16th April 2022)

• Record Type: Journal Article
• Authors: Yan, Lipei; Liu, Jiaju; Zhang, Ping; Xu, Hui; Ma, Wei; Sheng, Jiang; Xu, Dehao
• Is Part Of: Experimental heat transfer. Volume 35:Issue 3(2022)
• Page Start: 223
• Page End: 238
• Publication Date: 2022-04-16
• Subjects: Flat-plate-pulsating heat pipe -- evacuation pressure -- non-condensable gas -- thermal performance; Heat -- Transmission -- Measurement -- Periodicals; 621.4022
• DOI: 10.1080/08916152.2020.1838669
• Languages: English
• ISSNs: 0891-6152

Abstract

ABSTRACT: This paper is focused on the effects of different evacuation pressures on thermal performance of vertically placed flat-plate pulsating heat pipe (FP-PHP). Experimental results show that the difference in the amount of non-condensable gas (NCG) caused by evacuation pressures is an important reason for the difference in thermal performance of FP-PHP. The water FP-PHP under evacuation pressure of 200 Pa with 18.9 wt% NCG requires the least start-up power and time. NCG will increase the operation instability after ethanol FP-PHP has started up. Evacuation pressure has the least effect on HFE-347 FP-PHP, which can start up successfully without any evacuation.