[EN] The ¿Most Easy, Efficient and Low Cost Geothermal Systems for Retrofitting Civil and Historical Buildings¿ (GEO4CIVHIC) project aims to accelerate the deployment of shallow geothermal systems for heating and cooling purposes when retrofitting existing and historical buildings. Analyzing the implementation process of borehole heat exchangers (B...
Published in Frontiers in Built Environment
Ground Heat Exchangers (GHEs), buried in the ground either horizontally or vertically (in a borehole), are coupled with a heat pump to form a Ground Source Heat Pump (GSHP) system, which is a type of Renewable Energy System that exploits geothermal energy for space heating and cooling. GSHP systems are proposed as an alternative to conventional Air...
The high potential of ground source heat pumps (GSHP) to reduce the carbon dioxide emissions of heating, ventilation, and air conditioning (HVAC) systems has been widely acknowledged. GEOTABS combines GSHP systems (which generate heating and cooling) and TABS (thermally activated building structure) systems as storage-integrated emission systems. G...
The high potential of ground source heat pumps (GSHP) to reduce the carbon dioxide emissions of heating, ventilation, and air conditioning (HVAC) systems has been widely acknowledged. GEOTABS combines GSHP systems (which generate heating and cooling) and TABS (thermally activated building structure) systems as storage-integrated emission systems. G...
GSHP (Ground source heat pump), uses geothermal energy which is a form of green and sustainable energy. Geothermal energy is also a continuous source of energy, unlike wind energy. The results from this thesis work will be applicable for both GSHP that are being used for space heating, and the ones which have a bottom organic Rankine cycle. The ...
This paper presents a semi-analytical model based on the spectral element method for three-dimensional, short-to-long term heat flow in multiple borehole, multilayer ground source heat pump systems. The model is distinguished by its computational technique for expressing the input signal at the boundary of the borehole heat exchanger, giving rise t...
[EN] The design of ground source heat pumps is a fundamental step to ensure the high energy efficiency of heat pump systems throughout their operating years. To enhance the diffusion of ground source heat pump systems, two different tools are developed in the H2020 research project named, Cheap GSHPs: A design tool and a decision support system. In...
A semi-analytical model for simulating transient conductive-convective heat flow in a three-dimensional shallow geothermal system consisting of multiple borehole heat exchangers (BHE) embedded in a multilayer soil mass is introduced. The model is formulated in three steps, starting from an axial symmetric system and ending in a 3D multilayer, multi...
Combining High-Temperature Borehole Thermal Energy Storages (HT-BTES) with existing Combined Heat and Power (CHP) systems running on waste fuels seems to be a promising approach to increase the energy efficiency of district heating systems through recovery of excess heat summertime from the waste-to-energy operation. This paper presents a case stud...
This paper introduces a semi-analytical model for the simulation of transient heat transfer with friction heat gain in a single U-tube geothermal borehole heat exchanger subjected to an arbitrary heat flux signal. The friction effect appears as a nonhomogeneous term in the governing equations, which constitutes a set of coupled partial differential...
