Abstract
The main objective of actual energy policies around the world is the transition to renewable energy. EIA forecasts nearly 50% increase in world energy usage by 2050, which is hard to achieve using only renewable energy. For year 2019 the electricity production in EU relies mainly on conventional thermal (42.8 %) and nuclear energy sources (26.7%). The accelerated transition to electrical cars puts more pressure on energy producers. As a result, in order to match the ever-growing demand of electrical energy, the conventional thermal energy generation will play a key role, among them coal-based production. In order to meet the environmental goals and for sustainable production of electrical power, energy assessment of power production of coal-based power plants must be performed. The purpose of this paper is to perform an energy assessment of the electrical power production, focusing on a key component of this, the steam turbine. The performance characteristics of the turbine in condensing operation were determined. A proper efficiency of the turbine will have a significant impact on sustainable production of electricity.
Highlights
In electricity production two of the Sustainable Development Goals must be taken into account: affordable and clean energy and responsible consumption and production.At first glance, these goals are contradictory as the cost of renewable energy from solar and wind are higher than for “polluting energy” [1]
In 2017 [1] an electricity supply company said that the current fixed rate for the company’s clean energy was 14.8 cents per kilowatt hour, which compared to 8.2 cents a kilowatt hour for the electricity procured for customers by another one, through competitive bidding highlights the contradiction between clean energy and conventional energy
A steam turbine works by using a heat source, in this case coal, to heat water until it is converted into steam, at high temperatures
Summary
In electricity production two of the Sustainable Development Goals must be taken into account: affordable and clean energy and responsible consumption and production. In 2017 [1] an electricity supply company said that the current fixed rate for the company’s clean energy was 14.8 cents per kilowatt hour, which compared to 8.2 cents a kilowatt hour for the electricity procured for customers by another one, through competitive bidding highlights the contradiction between clean energy and conventional energy Data regarding this issue is sometimes contradictory, as another source [2] highlights the dropping costs of renewable energy for a period of time between 20102019 as follows: 82% for solar photovoltaics, 47% for concentrating solar power, 39% for onshore wind and 29% for offshore wind. In order to meet the environmental goals and for sustainable production of electrical power, energy assessment of power production of coal-based power plants must be performed
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