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Geothermal Power Plant Maintenance: Evaluating Maintenance System Needs Using Quantitative Kano Analysis

Atlason, Reynir S.; Oddsson, Gudmundur V.; Unnthorsson, … - In: Energies 7 (2014) 7, pp. 4169-4184

engineers within Icelandic geothermal power plants to be implemented in a maintenance tool or software. Visits were conducted to … the largest Icelandic energy companies operating geothermal power plants. Thorough interviews with chiefs of operations … at Reykjavik Energy and Landsvirkjun, responsible for 71.5% of the total energy production from geothermal resources in …

Persistent link: https://www.econbiz.de/10010790944

Gamma-ray Spectrometry in Geothermal Exploration: State of the Art Techniques

McCay, Alistair T.; Harley, Thomas L.; Younger, Paul L.; … - In: Energies 7 (2014) 8, pp. 4757-4780

decay of potassium, uranium, and thorium within rock. Radiogenic heat producing rocks are often targets for geothermal … radiogenic heat production properties and could be future geothermal targets. Topographical, atmospheric and spatial distribution … such inaccuracies represents an area for further improvement of these techniques for geothermal applications. …

Persistent link: https://www.econbiz.de/10010798810

The Potential and Utilization of Unused Energy Sources for Large-Scale Horticulture Facility Applications under Korean Climatic Conditions

Hyun, In Tak; Lee, Jae Ho; Yoon, Yeo Beom; Lee, Kwang Ho; … - In: Energies 7 (2014) 8, pp. 4781-4801

As the use of fossil fuel has increased, not only in construction, but also in agriculture due to the drastic industrial development in recent times, the problems of heating costs and global warming are getting worse. Therefore, introduction of more reliable and environmentally-friendly...

Persistent link: https://www.econbiz.de/10010798815

Heat exchanger optimization for geothermal district heating systems: A fuel saving approach

Dagdas, Ahmet - In: Renewable Energy 32 (2007) 6, pp. 1020-1032

One of the most commonly used heating devices in geothermal systems is the heat exchanger. The output conditions of … fairly easy approach. In this paper, a counter flow heat exchanger of geothermal district heating system is considered and …

Persistent link: https://www.econbiz.de/10010804457

Numerical analysis of thermal response tests with a groundwater flow and heat transfer model

Raymond, J.; Therrien, R.; Gosselin, L.; Lefebvre, R. - In: Renewable Energy 36 (2011) 1, pp. 315-324

flow, heterogeneous distribution of subsurface properties, a high geothermal gradient or significant atmospheric …

Persistent link: https://www.econbiz.de/10010804601

Climatic parameters and evaluation of energy consumption of the Afyon geothermal district heating system, Afyon, Turkey

Yetemen, Omer; Yalcin, Tolga - In: Renewable Energy 34 (2009) 3, pp. 706-710

Afyon geothermal district heating system (AFJET) provides heating to 4519 residences, covering an area of 513,683m2 …. Due to limitations in reinjection capacity, geothermal waters are released to the Akarcay Stream, detrimentally affecting … of geothermal water will decrease operational cost, increase equipment life-span, and reduce environmental pollution. …

Persistent link: https://www.econbiz.de/10010805220

Geothermal energy from hot dry rock: A renew able energy technology moving towards practical implementation

Duchane, D.V. - In: Renewable Energy 9 (1996) 1, pp. 1246-1249

The technology to extract useful amounts of energy from the large, ubiquitous, hot dry rock (HDR) resource has been under development for more than twenty years. Initial work during the 1970's and 1980's showed that it is possible to access and extract HDR energy using techniques originally...

Persistent link: https://www.econbiz.de/10010805448

Thermal modelling of large scale exploitation of ground source energy in urban aquifers as a resource management tool

Herbert, Alan; Arthur, Simon; Chillingworth, Grace - In: Applied Energy 109 (2013) C, pp. 94-103

As part of its legal commitment to reducing CO2 emissions, the UK has outlined a roadmap for significant increases in the use of ground source heat pumps for heating and cooling buildings. The technology is particularly suitable in new buildings, and in large commercial buildings. Such...

Persistent link: https://www.econbiz.de/10010678768

An analysis of the factors affecting hybrid ground-source heat pump installation potential in North America

Nguyen, Hiep V.; Law, Ying Lam E.; Alavy, Masih; Walsh, … - In: Applied Energy 125 (2014) C, pp. 28-38

Growing demands for space heating and cooling make ground-source heat pump (GSHP) systems a viable renewable alternative. The economic outlook of potential installations can be addressed by hybridizing GSHP systems with an auxiliary system. To better understand optimization factors in sizing...

Persistent link: https://www.econbiz.de/10010776585

A review on the renewable energy development in Algeria: Current perspective, energy scenario and sustainability issues

Stambouli, A. Boudghene; Khiat, Z.; Flazi, S.; Kitamura, Y. - In: Renewable and Sustainable Energy Reviews 16 (2012) 7, pp. 4445-4460

The quality of life and safeness of the present and future generations are strongly intertwined with the availability of energy sources and the sustainability of the energy infrastructure. Energy consumption in developed countries grows at a rate of approximately 1% per year, and that of...

Persistent link: https://www.econbiz.de/10010664514