A two Dimensional Steady State Roll Heat Pipe Analyses for Heat Exchanger Applications

A two Dimensional Steady State Roll Heat Pipe Analyses for Heat Exchanger Applications

T. Brahim A. Jemni 

Université de Monastir, Ecole Nationale d’Ingénieurs de Monastir, Laboratoire d’Etudes des Systèmes Thermique et Energétique LESTE, Avenue Ibn Jazzar 5019 Monastir, TUNISIE

Corresponding Author Email: 
enim_leste@yahoo.fr, taoufik.brahim@yahoo.fr
Page: 
115-120
|
DOI: 
https://doi.org/10.18280/ijht.300216
Received: 
N/A
| |
Accepted: 
N/A
| | Citation

OPEN ACCESS

Abstract: 

Roll heat pipe is a novel type of heat pipe which is different from conventional or concentric annular heat pipes because heat is transferred radially from the inner pipe (evaporator region) to the outer pipe (condenser region). The condensed liquid flows back from condenser to evaporator by bridge wicks. In this paper, a two dimensional steady state analysis of the performance of the roll heat pipe is reported. The effect of boundary conditions in on the heat pipe thermal resistance is investigated. Result reveal that the RHP thermal resistance decrease with the heat input and the RHP thermal performance is controlled by the outer surface temperature. Result also revealed that a higher grade of isothermalisation can be obtained with heat input location management.

Keywords: 

steady states, thermal resistance, boundary conditions, localized heat

1. Introduction
2. Model Description
3. Results and Discussion
4. Conclusions
  References

[1] B. J. Huang, J. T. Tsuei, A method of analysis for heat pipe heat exchangers, Int. J. Heat & Mass t transfer, 28 (3), 1985, pp: 553 – 562.

[2] Yau, Y.H., Tucker, A.S., 2003. Thermal performance study of a wet six-row heat-pipe heat exchanger operating in tropical buildings, International Journal of Energy Research., Volume 27, pp. 187-202.

[3] C. Kren, C. Schweigler, F. Ziegler, Efficient Li–Br absorption chillers for the European air conditioning market, in: ISHPC’02 Proceedings of the International Sorption Heat Pump Conference, Shanghai, China, 24–27 September2002, pp. 76–83.

[4] S.H. Noie-Baghban, G.R. Majideian., Waste heat recovery using heat pipe heat exchanger (HPHE) for surgery rooms in hospitals, Pergamon, Applied Thermal Engineering 20 (2000) 1271-1282 November 1999.

[5] G. Liu, et al., The application of heat pipe heat exchanger in exhaust gas heat recovery system and its thermodynamic analysis, in: 8th Int. Heat Pipe Conference, Beijing, China, 1992, pp. 582±585.

[6] 1J.Y. Sun, R.J. Shyu, Waste Heat Recovery Using Heat Pipe Heat Exchanger for Industrial Practices, in: Proc. 5th Int. Heat Pipe Symposium, Melbourne, Australia, 1996.

[7] V. Dube, I. Sauciuc, A. Akbarzadeh, Design Construction and Testing of a Thermosyphon Heat Exchanger for Medium Temperature Heat Recovery, in: Proc. 5th Int. Heat Pipe Symposium, Melbourne, Australia, 1996.

[8] W.U. Xiau Ping, P. Johnson, A. Akbarzadeh, A study of heat pipe heat exchanger effectiveness in an air conditioning application, in: Proc. 5th Int. Heat Pipe Symposium, Melbourne, Australia, 1996.

[9] Leonard L. Vasiliev, review, Heat pipes in modern heat exchangers Applied Thermal Engineering 25 (2005) 1–19.

[10] T. Brahim and A. Jemni, Roll Heat Pipe Transient Analysis, Int Journal of Heat and Technology, Edizioni ETS, volume 30 – N.1,2012

[11] Jalilvand.A; Katsuta.M ; Saitou. K; Toyonaga. J , A The Study and Development of Roll Heat Pipe Performance Heat Transfer Engineering, Volume 29 (12): 977-983 Taylor & Francis, Dec 1, 2008.

[12] Faghri A., (1995), Heat Pipe Science and Technology, Taylor & Francis, Washington, DC. 115-120