Experimental investigation of the thermal performance of a novel concentric tube heat pipe heat exchanger. (December 2018)

• Record Type: Journal Article
• Authors: Han, Xiaoxing; Wang, Yaxiong
• Is Part Of: International journal of heat and mass transfer. Volume 127(2018)Part A
• Page Start: 1338
• Page End: 1342
• Publication Date: 2018-12
• Subjects: Two-phase flow -- Thermosyphon -- Thermal resistance -- Maximum heat transfer capacity; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2018.07.116
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: A novel concentric tube heat pipe exchanger is developed. Performance of the novel concentric tube heat pipe exchanger is experimentally analyzed. Various parameters are evaluated to find optimum condition. Abstract: A novel concentric tube heat pipe exchanger was designed and expected to be utilized in integrated waste heat recovery equipment with higher heat transfer efficiency at lower temperature heat sources. The heat transfer performance of the novel heat pipe heat exchanger using acetone as working fluid was experimentally studied. It is found that the novel heat pipe heat exchanger has good isothermal performance and operation stability. The results showed that when the length of evaporator was 260 mm, the inclination angle was 60°, the flow of cooling water was 0.5 m 3 /h, the cooling water temperature was 30 °C, the novel heat exchanger delivered a better heat transfer performance. The maximum heat transfer quantity is about 1600 W, and the average thermal resistance is 0.042 °C/W.