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USE OF LOW-GRADE THERMAL ENERGY OF ALTERNATIVE AND WASTE INDUSTRIAL ENERGY SOURCES BY MEANS OF A THERMOMECHANICAL PUMP

E. V. Starikov

First published: 2018-06-20https://doi.org/10.5593/sgem2018/4.1/s17.101View metrics

Abstract

The article herein concerns direct conversion of thermal energy into mechanical energy of fluid motion by means of a specially designed thermomechanical pump. The conditions of fluid boiling in constraint environment were considered. The peculiarity of fluid evaporation in constraint environment when no natural convection is developed in the tubes is periodic overheating and explosive growth of vapour phase which leads to shooting the fluid out of the tube. Vapour slugs formed under slug boiling conditions are the compressible volumes which cause flow fluctuation inside the tube even if the flow is steady upstream the channel. Pressure pulses which develop when vapour slugs are formed have negative effect on equipment, since they lead to its vibration and breakdown (potential tube bending, breakdown of the tube-to-tube sheet joint, etc.). At the same time, energy of the vapour slugs can be used. The possibility of using energy of the vapour slugs for pumping the fluid is considered herein. A model of operation of the thermomechanical pump is provided. Experimental study of its operation is also described. Technical specification and areas of application of the thermomechanical pump are offered.

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Publication details

Title
USE OF LOW-GRADE THERMAL ENERGY OF ALTERNATIVE AND WASTE INDUSTRIAL ENERGY SOURCES BY MEANS OF A THERMOMECHANICAL PUMP
Authors
E. V. Starikov
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies
Publisher
STEF92 Technology
Year
2018
Pages
783-790
SWS Citekey
Starikov201817783790
ISSN
1314-2704
ISBN
978-619-7408-44-7
Language
en
Publication type
Conference Paper
Keywords
thermomechanical pumpalternative energyslug and hyper-slug boiling conditionsvapour bubblesfluid pumping.
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