Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Heat Pipe Science and Technology, An International Journal

ISSN Imprimer: 2151-7975
ISSN En ligne: 2151-7991

Archives: Volume 1, 2010 to Volume 8, 2017

Heat Pipe Science and Technology, An International Journal

DOI: 10.1615/HeatPipeScieTech.v1.i4.40
pages 359-373

THE NEW CONCEPT OF CAPILLARY FORCES AIDED EVAPORATOR FOR APPLICATION IN DOMESTIC ORGANIC RANKINE CYCLE

Dariusz Mikielewicz
Gdansk University of Technology, Faculty of Mechanical Engineering, 80-233 Gdansk, ul. Narutowicza 11/12, Poland
Pawel Szymanski
Gdansk University of Technology, Faculty of Mechanical Engineering, 80-233 Gdansk, ul. Narutowicza 11/12, Poland
Krzysztof Blauciak
Gdansk University of Technology, Faculty of Mechanical Engineering, 80-233 Gdansk, ul. Narutowicza 11/12, Poland
Jan Wajs
The Szewalski Institute of Fluid-Flow Machinery PAS, ul. Fiszera 14, 80-231 Gdansk; Gdansk University of Technology, Faculty of Mechanical Engineering, 80-233 Gdansk, ul. Narutowicza 11/12, Poland
Jaroslaw Mikielewicz
Institute of Fluid-Flow Machinery, Polish Academy of Science, 80-952 Gdansk, ul. Fiszera 14, Poland
Eugeniusz Ihnatowicz
Institute of Fluid-Flow Machinery, Polish Academy of Science, 80-952 Gdansk, ul. Fiszera 14, Poland

RÉSUMÉ

This paper presents studies on the possibility of applying capillary forces induced in the porous structure to a modern design of evaporator. The potential application of such heat exchanger is for example an evaporator of the domestic micro combined heat and power (CHP) unit. One of the problems in the micro-CHP is excessive demand for pumping power. The proposed design helps in overcoming that issue. In the evaporator outlined in the paper, there is a possibility of reducing the demand for pumping power, as the evaporator produces the extra pressure effect due to action of capillary forces. If successful, the cycle circulation pump operates only to compensate the pressure drop due to friction losses in the loop, whereas the wick covers the demand to overcome the pressure drop in the expansion device. Out of 14 tested fluids 3 were selected for further scrutiny, namely ethanol, water, and ammonia. It has been assumed that the fluid should work in the evaporator at temperature of 160°C. The results of surface tension distributions with respect to temperature are been presented in the figures. Preliminary analysis of the results indicates that water has the best potential; however, taking all issues into account, it can be said that the best effect is obtained using ethanol.

RÉFÉRENCES

  1. Akbarzadeh, A., Johnson, P., Nguen, T., Mochizuki, M., Mashiko, M., Sauciuc, I., Kusaba, S., and Suzuki, H. , Formulation and analysis of the heat pipe turbine for production of power from renewable resources.

  2. Bai, L., Lin, G., Zhang, H., and Wen, D. , Mathematical modeling of steady-state operation of a loop heat pipe.

  3. Mikielewicz, D. and Mikielewicz, J. , Cogenerative micro power plants-a new direction for development of power engineering?.

  4. Mikielewicz, D., Mikielewicz, J., and Ihnatowicz, E. , Analysis of the possibility of using gravitational and capillary forces for pumping liquids through microchannel heat exchangers.

  5. Mikielewicz, J. and Mikielewicz, D. , Comparative study of selected fluids for use in supercritical organic Rankine cycles.

  6. Mikielewicz, J. and Mikielewicz, D., Algorithm of minichannel heat exchanger calculations for domestic ORC unit.

  7. Ziapour, B.M. , Performance analysis of an enhanced thermosyphon Rankine cycle using impulse turbine.


Articles with similar content:

HEAT TRANSPORT BEHAVIOR OF A MINIATURE LOOP HEAT PIPE USING WATER−NICKEL NANOFLUID
Heat Pipe Science and Technology, An International Journal, Vol.3, 2012, issue 1
Roger R. Riehl
EXPERIMENTAL INVESTIGATION OF THE WORKING PERFORMANCE OF A NOVEL MINIATURE LOOP HEAT PIPE
Journal of Enhanced Heat Transfer, Vol.20, 2013, issue 6
Xiao-Wu Wang, Zhenping Wan, Yong Tang
TRANSIENT MODELING OF CPL FOR TERRESTRIAL APPLICATION, PART A: NETWORK CONCEPT & INFLUENCE OF GRAVITY ON THE CPL BEHAVIOR
Heat Pipe Science and Technology, An International Journal, Vol.5, 2014, issue 1-4
Cyril Romestant, Yves Bertin, Vincent Platel, N. Blet, Vincent Ayel
THERMODYNAMIC ANALYSIS OF REFRIGERATION SYSTEMS WITH MORE-COMPONENT TWO-PHASE FLUIDS
Energy and the Environment, 1998, Vol.0, 1998, issue
Giacomo Bisio , Claudio Pisoni
DEVELOPMENT OF 500 W AMMONIA LOOP HEAT PIPE FOR SPACECRAFT THERMAL CONTROL
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Vol.0, 2017, issue
Amrit Ambirajan, Jaikumar V, Jasvanth V S, Abhijit A. Adoni, Srikanth T