Dynamic heat transfer model for temperature drop analysis and heat exchange system design of the air-powered engine system

Qiyue Xu, Maolin Cai and Yan Shi

Energy, 2014, vol. 68, issue C, 877-885

Abstract: In the operation process of an air-powered engine (APE) system, temperature drops happening in critical locations can influence the engine's performance negatively, and even lead to the ice blocking problem. To predict temperature drops during the operation, firstly, the thermodynamic model of the APE and a calculation method for equivalent air temperatures at intake and exhaust ports are described. The cooling mechanism of the pressure-reducing process is analyzed. Then a simplified calculation model of the throttling effect for dynamic temperature analysis is proposed. Furthermore, a complete dynamic model of the APE system is established, by considering models mentioned above and models of the pressure tank and the supply pipeline as well. The model's feasibility on the temperature drop analysis is verified by comparing with corresponding experiments. Simulation of a practical APE system is carried out. Under specific parameter settings, temperature drops of critical locations in the system are predicted. On this basis, the supply system of compressed air is modified and a principle structure of the heat exchange system for the APE system is proposed. The analysis results in this paper can provide a theoretical support for the design of the heat exchange system.

Keywords: Air-powered engine; Temperature drop; Throttling effect; Dynamic model; Heat exchange (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544214002497
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:68:y:2014:i:c:p:877-885

DOI: 10.1016/j.energy.2014.02.102

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().