Modern Solutions for the use of near Surface Geothermal Energy in Banat

Abstract

The energy feed problem leads us in the future strongly to mix the energy of renewable energy and non-renewable energy. Geothermal energy stored in the form of heat under the ground surface is one of the most important renewable energy. The stored heat in the ground results from sunlight and heat flux inside the earth resulting among others from radioactive decay, therefore, deep geothermal energy will be used for generating electricity, and near-surface geothermal energy serves to produce heat, respectively cold and battery heat. One particular advantage of the geothermal energy is the independence from day periods and unfavorable conditions. The increase in sales on the geothermal heat pump market proves that evidently. Heat pumps are modern installations that are utilized as an alternative to the conventional power plants having greater yields from 50 – 70%, and maintenance costs up to 2, 3 times smaller. In the paper, we discuss the current solutions by using a near-to surface geothermal energy and its application possibility in Timiș County area. Following this mathematical modeling with the PMWIN program, it can be seen that our thermal pollutant spreads to the ground and the groundwater and influences both the ground around the wells and the adjacent terrain. Influences produced may have major effects on the thermal regime of adjacent lands. With the spread of heat, there is a warming/cooling (depending on the use case) of the ground and, implicitly, of the groundwater. On the adjacent terrain, there will be no heating or cooling installations with heat wells because that area is already used by existing wells. All these effects, which affect not only the proprietor of the good installation, can also attract lower sale price of the land because of a geothermal change. However, affected neighbors do not have the opportunity to instantly defend themselves because there is currently no adequate legislation regulating these issues.