Articles

High-heat-producing granites of East Dharwar Craton around Gugi, Karnataka, and their possible influence on the evolution of Rajapur thermal springs, Deccan Volcanic Province, India

The thermal springs of Rajapur situated along the west coast of Maharashtra and parts of high-heat-generating granites of Gugi in Karnataka (India) seem to be genetically related. The present investigation inv...

Authors: Hemant K Singh, Yadvendra Kumar, Dornadula Chandrasekharam, Trupti Gurav and Banambar Singh

Thermal effect of a borehole thermal energy store on the subsurface

The thermal effect on the subsurface of a large borehole thermal energy store (BTES) has been investigated by coupling measured rock properties with an enhanced FEFLOW simulation.

Authors: Philipp Mielke, Dan Bauer, Sebastian Homuth, Annette E Götz and Ingo Sass

Thermodynamic pre-determination of power generation potential in geothermal low-temperature applications

Small capacity, low temperature, geothermal heat sources provide significant opportunities for distributed, small scale power generation. Project definitions and pre-dimensioning however require advanced therm...

Authors: Henrik Öhman and Per Lundqvist

Hydrochemistry and geothermometry of an Albian aquifer from Oued Righ region in northeastern Algerian Sahara

The area of Oued Righ is one of the important geothermal areas in northeastern Algerian Sahara. It is characterized by a hot arid climate with intense dryness and very high evaporation rates. These various cli...

Authors: Warda Chaib and Nacer Kherici

Three-dimensional thermal sensitivity analysis of cooling of a magma chamber in the Los Azufres geothermal field, Michoacán, Mexico

We present three-dimensional simulation of cooling of 63 models of a magma chamber in the Los Azufres geothermal field by varying the top of the chamber depth between 5 and 9 km (centroid from about 7 to 13 km...

Authors: Surendra P Verma and Efraín Gómez-Arias

A systematic review of enhanced (or engineered) geothermal systems: past, present and future

Enhanced (or engineered) geothermal systems (EGS) have evolved from the hot dry rock concept, implemented for the first time at Fenton Hill in 1977. This paper systematically reviews all of the EGS projects wo...

Authors: Katrin Breede, Khatia Dzebisashvili, Xiaolei Liu and Gioia Falcone

Thermal response test numerical modeling using a dynamic simulator

Borehole heat exchangers are a growing technology in the area of house/building air conditioning, most of all in northern Europe.

Authors: Sara Focaccia

Performance analysis and working fluid selection for geothermal energy-powered organic Rankine-vapor compression air conditioning

To utilize geothermal energy from hot springs, an organic Rankine cycle/vapor compression cycle (ORC/VCC) system was employed for air conditioning and a thermodynamic model was developed.

Authors: Xianbiao Bu, Lingbao Wang and Huashan Li

Geothermal Energy: a glimpse at the state of the field and an introduction to the journal

Authors: Olaf Kolditz, Leslie A Jakobs, Ernst Huenges and Thomas Kohl