E3S Web Conf.
Volume 140, 2019International Scientific Conference on Energy, Environmental and Construction Engineering (EECE-2019)
|Number of page(s)
|Power Consumption Management
|18 December 2019
Efficiency of using heat pumps with various refrigerants in real steam turbine power units with PT-80 and T-250 turbines
Peter the Great St. Petersburg Polytechnic University, 195251, Polytechnicheskaya 29, St. Petersburg, Russia
* Corresponding author: firstname.lastname@example.org
Prospects for increasing the efficiency of heat and electric energy-generation and heat-and-power supply at thermal power plants obviously draw attention to such modern and innovative technologies as heat pumps. Heat pumps allow efficient redistribution of energy flows. The abundance of low-potential heat carriers and heat sources in the cycle arrangement of the thermal power plants operation requires modernization of production and increase of the fuel heat utilization factor, therefore, reduction of specific fuel consumption for the production of heat and electricity. This paper analyzes the influence and practicability of introducing heat pumps into the heating circuit of the return water of the heat network of power units with PT-80 and T-250 turbines. Heat pumps of various configurations provide invariant energy conversion factor and efficiency. To assess energy and economic efficiency, modeling of the operation of power units and calculation of heat pump circuits for various refrigerants are performed. The economic effect is represented in quarterly cash savings of operating costs.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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