Papers 2629
1 page of 263 pages (2,629 results)
#1Hamid Narei (UT: University of Tehran)H-Index: 2
#2Maryam Fatehifar (Sharif University of Technology)H-Index: 1
Last. Younes Noorollahi (UT: University of Tehran)H-Index: 19
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Abstract Ground-source heat pumps, as the most environmentally friendly and energy-efficient air conditioning technology, suffer from a great required length of ground heat exchanger, partly arising from the low thermal conductivity of high-density polyethylene tubes commonly used in ground heat exchangers. In an attempt to find a replacement with an acceptable thermal conductivity for high-density polyethylene tubes, in this study, first, a comprehensive comparative study on fillers commonly us...
Abstract Earth to air heat exchangers are preconditioning systems designed to preheat the new air of buildings in winter. This paper suggests a study of a new horizontal coaxial earth /water/air heat exchanger (EWAHE) where hot water flows in the centre of the exchanger. After an analytical study of the exchanger in steady state regime, its coupling with the surrounding earth modeled in transient regime by spatio-temporal discretization; we obtain a very good correlation of our model under MATLA...
#1Yusuke Mukuhira (Tohoku University)H-Index: 4
#2Takatoshi Ito (Tohoku University)H-Index: 10
Last. Markus HäringH-Index: 10
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Abstract Evaluation of fluid flow behavior is important for understanding various phenomena in a geothermal reservoir. Microseismic monitoring and location can be used to track pore pressure migration to some extent; however, microseismic information cannot directly provide the detail of flow behavior, such as how fluid flow occurs in the reservoir. In this study, we propose a new method to evaluate the entire flow-path system in a fractured reservoir. We first estimate the pore-pressure increas...
#1Tugberk Hakan Cetin (GIT: Gebze Institute of Technology)H-Index: 1
#2Mehmet Kanoglu (University of Gaziantep)H-Index: 28
Last. Fevzi Bedir (GIT: Gebze Institute of Technology)H-Index: 1
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Abstract To get more out of geothermal power generation, integration of energy storage technologies to geothermal power plants could be used for base load peak shaving operations. Cryogenic energy storage is one the attractive options to store geothermal power during off-peak hours and produce power during peak hours. In this study, a new configuration consisting of a binary geothermal power plant, an air liquefaction unit, and a cryogenic organic Rankine cycle is considered and analyzed using t...
#1Cristina Sáez Bláquez (University of Salamanca)
#2Ignacio Martín Nieto (University of Salamanca)H-Index: 4
Last. Diego González-Aguilera (University of Salamanca)H-Index: 21
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Abstract The purpose of this paper is to present a new tool developed for the calculation and design of shallow closed-loop geothermal systems. Most of the available geothermal computer programs only allow to consider vertical heat exchangers configurations (i.e. single or double-U tubes), being the horizontal and helical designs excluded. As an attempt to fill this gap, GES–CAL tool, presented here, is capable of providing the complete design of all the most common configurations used in low en...
#1Chi YaoH-Index: 7
#2Yulong ShaoH-Index: 1
Last. Chuangbing ZhouH-Index: 30
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Abstract This paper presents a model to reveal the heat transfer mechanism and simulate the heat-flow coupling process in fractured rock masses. Specifically, effects of fracture density, roughness, and percolation on heat-flow coupling are investigated systematically. The fractured rock masses are composed of a discrete fracture network and a rock matrix. Regarding the mesh discretisation for finite element analysis, the rock matrix is discretised into three-dimensional (3D) solid elements, whe...
#1Mohammad Zolfagharroshan (AUT: Amirkabir University of Technology)H-Index: 1
#2Ehsan Khamehchi (AUT: Amirkabir University of Technology)H-Index: 1
Abstract Lots of studies have been done to model the flow behavior and probable processes in producing geothermal wells. As the deposition of particles can cause a decline in the expected flow rate, and it is not desirable, so the scale has to been predicted, treated, and removed. In this study, a geothermal wellbore simulator program is presented that predicts scale precipitation and deposition during drilling in addition to modeling production conditions. The novelty of this study is wellbore ...
1 CitationsSource
#1Zulkarnain Abbas (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Dongwen Chen (SJTU: Shanghai Jiao Tong University)
Last. R.Z. Wang (SJTU: Shanghai Jiao Tong University)H-Index: 18
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Abstract In order to overcome the intermittent nature of renewable energy resources, borehole thermal energy storage (BTES) systems are found to be a feasible option these days. Previous research data shows that most of the BTES projects are related to heat storage and there are very few underground cold storage applications. The proposed research work is based on the experimental strategy to determine the extracted energy storage potential in typical weather condition areas. It emphasizes on th...
#1Paolo Maria Congedo (University of Salento)H-Index: 18
#2Cristina Baglivo (University of Salento)H-Index: 9
Last. Delia D’AgostinoH-Index: 12
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Abstract Geothermal energy has a huge potential in building applications. This paper proposes the use of an Air-Source Heat Pump (ASHP) system coupled with a Horizontal Earth-To-Air Heat Exchanger (EAHX) to reduce energy consumption in buildings. The novelty is to geothermally pre-heat or pre-cool the air source of the ASHP through the EAHX, reducing the electric power needed, keeping constant heating/cooling capacity. The behaviour of ASHP-EAHX system has been investigated by a numerical model ...
#1Mengmeng Wang (China University of Geosciences)
#2Xun Zhou (China University of Geosciences)H-Index: 6
Last. Haisheng Liu (China University of Geosciences)H-Index: 1
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Abstract The Adong hot springs in the Meso-Proterozoic metamorphic rocks are located in Deqin county in northwestern Yunnan of China in the Yunnan-Tibet geothermal belt with travertine deposition. Different from many other hot springs which emerge along rivers or in valleys in Yunnan, the springs emerge on the mountain slope about 100 m above the local River. Little is known about the genesis and state of travertine deposition in the hot springs. The study of the hot springs will be helpful to e...
Top fields of study
Geothermal gradient
Geotechnical engineering
Geothermal energy