scholarly journals Shallow geothermal energy potential for heating and cooling of buildings with regeneration under climate change scenarios

Energy ◽  
2022 ◽  
pp. 123086
Author(s):  
Alina Walch ◽  
Xiang Li ◽  
Jonathan Chambers ◽  
Nahid Mohajeri ◽  
Selin Yilmaz ◽  
...  
Keyword(s):  
Climate Change ◽  
Geothermal Energy ◽  
Climate Change Scenarios ◽  
Energy Potential ◽  
Heating And Cooling ◽  
Shallow Geothermal Energy

scholarly journals Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

2021 ◽  
Vol 11 (6) ◽  
pp. 2691
Author(s):  
Nataša Ćuković Ignjatović ◽  
Ana Vranješ ◽  
Dušan Ignjatović ◽  
Dejan Milenić ◽  
Olivera Krunić
Keyword(s):  
Geothermal Energy ◽  
Architectural Design ◽  
Pannonian Basin ◽  
Thermal Power ◽  
Chemical Compositions ◽  
Energy Potential ◽  
Southeastern Part ◽  
Geothermal Resources ◽  
Heating And Cooling ◽  
Different Temperatures

The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come from different types of reservoirs having different temperatures and chemical compositions. At the first site, a geothermal spring with a temperature of 20.5 °C is considered for heat pump utilization, while at the second site, a geothermal well with a temperature of 54 °C is suitable for direct use. The calculated thermal power, which can be obtained from geothermal energy is in the range of 300 to 950 kW. The development concept was proposed with an architectural design to enable sustainable energy efficient development of wellness and spa/medical facilities that can be supported by local authorities. The resulting energy heating needs for different scenarios were 16–105 kW, which can be met in full by the use of geothermal energy.

GIS-based modelling of shallow geothermal energy potential for CO 2 emission mitigation in urban areas

2016 ◽  
Vol 86 ◽  
pp. 1023-1036 ◽  
Author(s):  
Kerry Schiel ◽  
Olivier Baume ◽  
Geoffrey Caruso ◽  
Ulrich Leopold
Keyword(s):  
Urban Areas ◽  
Geothermal Energy ◽  
Emission Mitigation ◽  
Energy Potential ◽  
Shallow Geothermal Energy

scholarly journals Assessment of the Potential Use of Shallow Geothermal Energy Source for Air Heating and Cooling in the Kingdom of Saudi Arabia

2021 ◽  
Vol 20 (5) ◽  
Author(s):  
M. Ouzzane ◽  
M. T. Naqash ◽  
O. Harireche
Keyword(s):  
Saudi Arabia ◽  
Geothermal Energy ◽  
Air Cooling ◽  
Total Energy Consumption ◽  
Kingdom Of Saudi Arabia ◽  
Total Load ◽  
Heating And Cooling ◽  
Shallow Geothermal Energy ◽  
Almost All ◽  
Air Circulation

A large part of the total energy consumption in buildings in the Kingdom of Saudi Arabia (K.S.A.), is devoted to air cooling. This leads to high electricity costs for residents and a high amount of equivalent CO2 emissions. The work presented in this paper aims at evaluating and applying shallow geothermal energy for cooling and heating to reduce cost and environmental issues in the Kingdom. The system is based on the earth-air heat exchanger (EAHE) equipped with an air circulation fan. In this study, six cities have been selected; Madinah city, where our university is located, and five other cities representing five different climatic zones. A new parameter called “geothermal percentage” is proposed to calculate the ratio of geothermal energy to the cooling/heating total load. It has been shown that the proposed system covers part of the cooling load and the total heating needs for almost all the country’s territory. However, both heating and cooling needs can be fulfilled by the EAHE for few cities such as Guriiat and Khamis, characterized by a moderate climate.

Modeling Neighborhood-Scale Shallow Geothermal Energy Utilization - A Case Study in Berlin

2021 ◽  
Author(s):  
Shuang Chen ◽  
Jakob Randow ◽  
Katrin Lubashevsky ◽  
Steve Thiel ◽  
Tom Reinhardt ◽  
...  
Keyword(s):  
Geothermal Energy ◽  
Model Comparison ◽  
Energy Utilization ◽  
Fluid Temperature ◽  
Load Curve ◽  
Geothermal Heat ◽  
Heating And Cooling ◽  
Shallow Geothermal Energy ◽  
Neighborhood Scale ◽  
Set Up

<p>Nowadays, utilizing shallow geothermal energy for heating and cooling buildings has received increased interest in the energy market. Among different technologies, large borehole heat exchanger (BHE) arrays are widely employed to supply heat to various types of buildings and districts. Recently, a 16-BHE array was constructed to extract shallow geothermal energy to provide heat to the newly-developed public building in Berlin. According to the previous geological survey, different non-homogeneous sedimentary layers exist in the subsurface, with variating groundwater permeabilities and thermal parameters. To estimate the performance of the BHE array system, and its sensitivity to different subsurface conditions, as well as to determine its thermal impact to the surrounding area, a comprehensive 3D numerical model has been set up according to the Berlin BHE array project. The model is simulated for 25 years with two finite element simulators, the open source code software OpenGeoSys (OGS) and the well-known commercial software FEFLOW. In the model, an annual thermal load curve is assigned to each BHE according to the real monthly heating demand. Although the way of the implementing parameters in the two programs differs from each other and some assumptions had to be made in the model comparison, the comparison result shows that both OpenGeoSys and FEFLOW produce in good agreement. Different parameters, e.g. the Darcy velocity, the thermal dispersivity of the aquifer, the surface temperature and the geothermal heat flux are investigated with respect to their impact on the underground and BHE circulation temperature. At last, the computed underground temperature and the brine fluid temperature evolution from OGS is benchmarked with the results from the model simulated in FEFLOW. The numerical experiments show that the the ground water field has the strongest influence on the brine fluid temperature within the BHEs. When the thermal dispersivity of the aquifer is considered, the mixing effect in the aquifer leads to a higher brine fluid temperature in the BHE, indicating a better thermal recharge of the system.</p>

scholarly journals Renewable Energy Sources in a Post-Socialist Transitional Environment: The Influence of Social Geographic Factors on Potential Utilization of Very Shallow Geothermal Energy within Heating Systems in Small Serbian Town of Ub

2020 ◽  
Vol 10 (8) ◽  
pp. 2739 ◽  
Author(s):  
Nikola Jocić ◽  
Johannes Müller ◽  
Tea Požar ◽  
David Bertermann
Keyword(s):  
Climate Change ◽  
Renewable Energy ◽  
Geothermal Energy ◽  
Renewable Energy Sources ◽  
Heating System ◽  
Energy Sources ◽  
Wide Range ◽  
Energetic Stability ◽  
Shallow Geothermal Energy ◽  
Very Shallow Geothermal Energy

Energetic stability is a precondition for a regular functioning of society and economy. Actual climate change raised the awareness of population and policy makers about the importance of exploited energy sources. Renewable energy sources are revealed as the solution which should satisfy both needs—a need for energetic stability, as well as a need for producing ‘clean’ and ‘sustainable’ energy, and therefore reduce humans’ influence on the climate change. Very shallow geothermal energy offers wide range for utilization, among others for heating and cooling living spaces. This article shows potentials of low temperature heating system networks in a small Serbian town of Ub. In addition to technical possibilities, this article combines geographical and social, as well as political and economic circumstances in the town of Ub, which emerge as a result of a complex (post-socialist) transitional vortex.

scholarly journals Evaluation of the Shallow Geothermal Potential for Heating and Cooling and Its Integration in the Socioeconomic Environment: A Case Study in the Region of Murcia, Spain

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5740
Author(s):  
Adela Ramos-Escudero ◽  
M. Socorro García-Cascales ◽  
Javier F. Urchueguía
Keyword(s):  
Specific Heat ◽  
Geothermal Energy ◽  
Water Saturation ◽  
Regional Scale ◽  
Ghg Emissions ◽  
Heat Extraction ◽  
Heating And Cooling ◽  
Ground Source ◽  
Shallow Geothermal Energy ◽  
The Cost

In order to boost the use of shallow geothermal energy, reliable and sound information concerning its potential must be provided to the public and energy decision-makers, among others. To this end, we developed a GIS-based methodology that allowed us to estimate the resource, energy, economic and environmental potential of shallow geothermal energy at a regional scale. Our method focuses on closed-loop borehole heat exchanger systems, which are by far the systems that are most utilized for heating and cooling purposes, and whose energy demands are similar throughout the year in the study area applied. The resource was assessed based on the thermal properties from the surface to a depth of 100 m, considering the water saturation grade of the materials. Additionally, climate and building characteristics data were also used as the main input. The G.POT method was used for assessing the annual shallow geothermal resource and for the specific heat extraction (sHe) rate estimation for both heating and, for the first time, for cooling. The method was applied to the Region of Murcia (Spain) and thematic maps were created with the outputting results. They offer insight toward the thermal energy that can be extracted for both heating and cooling in (MWh/year) and (W/m); the technical potential, making a distinction over the climate zones in the region; the cost of the possible ground source heat pump (GSHP) installation, associated payback period and the cost of producing the shallow geothermal energy; and, finally, the GHG emissions savings derived from its usage. The model also output the specific heat extraction rates, which are compared to those from the VDI 4640, which prove to be slightly higher than the previous one.

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