Geothermal energy development in the UK has been limited, partly due to the lack of high enthalpy resources, but also due to the availability of cheap fossil fuels during the 1980s and 1990s. However, with the advent of renewable energy sources to combat climate change and the need to replace diminishing fossil fuels, geothermal is now in a good position to contribute to the energy mix. In this...

Ground thermal energy as a clean and sustainable energy source has received significant attention lately. Several strategies and hybrid configurations have been proposed to harvest geothermal energy for air conditioning and industrial purposes. The possibility of moist soil freezing in the vicinity of borehole tubes is known to be the source of several benefits and difficulties. The high storag...

Dagestan is one of the pioneers in matter of analysis and industrial development of geothermal resources in Russia. Despite lacking obvious volcanism, mountain-filled Dagestan is rather rich in thermomineral sources and geothermal anomalies (Ahti, Hnov, Richalsy, Giljar, Berikey, Duzlak, Alchadjikent, Kayjakent, Adgi, Istisy, Miatli, Hzanor etc.). In premountain-flat Dagestan by drilling in gas...

A feature of French geothermal engineering is the development of industrial projects in normal gradient, non-convective areas. The economic feasibility of exploitin producing between 150 and 350 m /h at temperatures from 5 5 O to 85' from depths of 1,500 to 2,000 meters, in sedimentary basins with normal gradient, for direct heat production has been proved by 50 plants providing heating for ove...

Energy is an essential component for prosperity, economic growth, and development has become a basic necessity humans, but at the same time, it impact on environment. Therefore, believed that, in coming future, renewable energy will play important part fulfilling demand. In that respect, geothermal be vital as continuous source of not affected by metrological conditions can used power generatio...

The Energy Policy Act of 1992 embraces and implements many of the actions recommended by the President in the National Energy Strategy. .Independent geothermal power producers may be direct beneficiaries of 1) further deregulation of IPPs through their exemption from the provisions of the Public Utility Holding Company Act and 2) potentially freer access to utility-owned transmission facilities...

In this paper, a novel integrated system is proposed to improve the performance of a conventional low-grade geothermal-based organic Rankine cycle (ORC). The main idea is to utilize two TEG units to recover the waste heat of the condenser and geothermal brine. The proposed model is investigated and compared with simple ORC from the energy, exergy, and exergoeconomic viewpoints through the param...

The reliability of long-term performance of borehole heat exchanger (BHE) systems is now proved by numerical modelling, supported by a unique data base. This lead to rapid market penetration. Such heat pump-coupled BHE systems are ideally suited to tap the ubiquitous shallow geothermal resources. With presently 20'000 installations, Switzerland has the highest areal BHE density worldwide (about...

The geothermal resources in sedimentary basin are affected by many factors because the characteristic of geothermal reservoirs is very complex, so the heat storage capacities are hard to calculate. This paper took Dunhuang Basin as an example to analyze the geological structure, stratigraphic structure and the formation mechanism of geothermal water based on the formation characteristics of the...

in this paper, the results of surface and ground water quality monitoring during drilling of three deep exploratory wells in geothermal project in north west of sabalan in meshkinshahr are analyzed. the region has been investigated by various researchers to generate electricity using geothermal energy. drilling in deep geothermal projects, a variety of materials such as cement, bentonite, barit...