Abstract
This paper presents an experimental study of an open loop pulsating heat pipe (OLPHP) of 0.9 mm inner diameter. The performance characterization has been done using four working fluids at vertical and horizontal orientations. Water, Methanol, 2-Propanol and Acetone has been employed as the working fluid with 50% fill ratio. The experimental results indicate a strong influence of gravity and thermo physical properties of the working fluids on the performance of OLPHP. Considering all the working fluids used, Water has shown better thermal performance in vertical orientation while Methanol has shown better performance in horizontal orientation. All the working fluids perform better at horizontal orientation.
Similar content being viewed by others
Abbreviations
- Eö:
-
Eötvös number (mm2)
- Bo:
-
Bond number (mm)
- COP:
-
Coefficient of performance (mm)
- Q :
-
Heat input (W)
- R :
-
Thermal resistance (°C/W)
- U :
-
Overall heat transfer coefficient (kW/m2°C)
References
Yang H, Khandekar S, Groll M (2008) Operational limit of closed loop pulsating heat pipes. Appl Therm Eng 28:49–59
Akachi H, Polášek F, Štulc P (1996) Pulsating heat pipes. Proceedings of the 5th international heat pipe symposium. Melbourne, Australia, pp 208–217
Zhang Y, Faghri A (2002) Heat transfer in a pulsating heat pipe with an open end. Int J Heat Mass Transf 45:755–764
Khandekar S, Groll M, Charoensawan P, Rittidech S, Terdtoon P (2004) Closed and open loop pulsating heat pipes. 13th International Heat Pipe Conference (13th IHPC), shanghai, China, pp 21–25
Karimi G, Culham JR, Review and assessment of pulsating heat pipe. Microelectronics Heat Transfer Laboratory, Department of Mechanical Engineering, University of Waterloo, Waterloo
Riehl RR (2003) Evaluation of the thermal-hydro-dynamics behavior of an open loop pulsating heat pipe. National Institute for Space Research (INPE) Report, p 35
Khandekar S, Groll M (2003) On the definition of pulsating heat pipes: an overview. Proceedings 5th minsk international seminar (heat pipes, heat pumps and refrigerators), Minsk, Belarus
Riehl RR Characteristics of an open loop pulsating heat pipe, SAE paper #2004-01-2509
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Saha, M., Feroz, C.M., Ahmed, F. et al. Thermal performance of an open loop closed end pulsating heat pipe. Heat Mass Transfer 48, 259–265 (2012). https://doi.org/10.1007/s00231-011-0882-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00231-011-0882-9