In everyday practice, geothermal energy is treated both by us professionals, and regular users as one of renewable energy sources. Although we tend to concentrate on its utility and technical value, geothermal is also part of our civilization and history. Therefore, it is worthwhile to spend some time investigating this kind of energy to learn its role and place in historical and cultural herit...

Due to Iceland’s location on the Mid-Atlantic ridge, the island is provided with a great amount of geothermal energy. Hence, Iceland is well on the way to becoming completely independent of fossil fuels. Whereas high-temperature areas are mainly used for electricity generation, the more frequent low-temperature areas are utilized for direct application like space heating, bathing and greenhouse...

vartun geothermal region (vgr) is located in west central part of iran, 300 km in the southeast of tehran. vgr area is 277 km2and there are some geothermal surface manifestations such as warm springs and travertine deposits. there are three warm springs which their temperature varies from 35.3 to 43.1 °c. their ph is a little bit acidic and is about 6.1-6.2. based on geothermometery studies var...

Background (Ba,Sr)SO4 solid-solutions range among the most important scaling minerals, not only in geothermal energy production, but generally in applications involving hydrothermal brines, e.g. including petroleum production [e.g. (Todd and Yuan 1990, 1992; Kühn et al. 1997)]. Besides the general difficulties related to scale formation, like blockage of pipes, related decrease of well producti...

Indonesia has around 40% or the world‟s capacity for geothermal energy production, yet lags behind neighbors, such as the Philippines, in developing this resource. There are ambitious plans to increase production to nearly 6GW and then to 9.5GW, with the bulk of the investment coming from the private sector. With Chevron being the only overseas company currently investing in Indonesia, this pap...

Renewable energy is the energy generated from natural resources such as sunlight, wind, rain, tides and geothermal heat. Turkey has a great renewable energy potential with its natural resources such as biomass, geothermal, hydropower, solar, and wind. Selection among energy alternatives is a multicriteria decision-making problem with conflicting and interactive criteria. In this paper, the best...

Geothermal energy piles are a quite recent renewable energy technique where geothermal energy in the foundation of a building is used to transport and store geothermal energy. In this paper, a structural-functional integrated cement-based composite, which can be used for energy piles, was developed using expanded graphite and graphite nanoplatelet-based composite phase change materials (CPCMs)....

The development of Enhanced Geothermal Systems (EGS) for the cogeneration of electricity and district heating has recently gained interest, and is expected to know an important development in the future. Major research questions on the design of the energy conversion system concern the increase of the efficiency in the usage of geothermal resources, as well as the increase of their economic pro...

Article history: Received 20 February 2012 Received in revised form 9 July 2012 Accepted 11 July 2012 Available online 29 July 2012 This paper analyzes Turkey's geothermal energy future perspective and power generation strategy with a view to explaining Delphi approach to geothermal energy development. In this study, the two round Delphi survey was conducted to experts to determine and measure ...