Title: Practical method for measuring exergy

Authors: Ekaterina Yushkova; Vladimir Lebedev

Addresses: Department of Heat Engineering and Heat Power Engineering, St. Petersburg Mining University, 2, 21st Line, St Petersburg, 199106, Russia ' Department of Heat Engineering and Heat Power Engineering, St. Petersburg Mining University, 2, 21st Line, St Petersburg, 199106, Russia

Abstract: Today, the enthalpy method is most often used to study technological installations for energy efficiency. Exergy analysis gives the most complete and objective assessment of various types of energy. Study presents an experimental setup that simulates a heating system to which an exergy meter is connected. As a result of the experiment, it turned out that the amount of heat remains constant if the temperature difference between the inlet and outlet is constant. However, the exergy method showed that exergy increases with an increase in the inlet temperature (even with a constant temperature difference); therefore, fuel consumption also increases with an increase in the initial temperature. The heat meter was invented a long time ago, but the device for measuring exergy did not yet exist. The device will give an impetus for a more active development of exergy analysis.

Keywords: exergy; exergy measuring device; account of exergy; energy efficiency; exergoeconomic.

DOI: 10.1504/IJEX.2022.126545

International Journal of Exergy, 2022 Vol.39 No.3, pp.233 - 245

Received: 03 Nov 2021
Accepted: 04 Feb 2022
Published online: 28 Oct 2022 *

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