TY - GEN
T1 - Solar assisted ground source heat pump performance assessment for residential energy supply in southern European climates
AU - Arcuri, Natale
AU - Reda, Francesco
AU - Loiacono, Pasquale
AU - Mazzeo, Domenico
N1 - Publisher Copyright:
© 2015 by Bozen-Bolzano University Press Free University of Bozen-Bolzano All rights reserved.
PY - 2015
Y1 - 2015
N2 - The awareness about environmental problems due to fossil fuel consumption is increasing widely; therefore, efforts are being made to develop energy efficient and environmentally friendly systems by utilisation of non-polluting renewable energy sources. Ground source heat pumps (GSHPs) belong to this category. Many variations of geothermal system typologies exist, with different configurations suitable in different situations and most locations around the world. One emergent configuration is the solar assisted GSHP (SAGSHP). The paper focuses on different control strategies of a solar assisted ground source heat pump (SAGSHP) for different Italian locations. Dynamic simulation approach has been used through TRNSYS software. The impact of the considered strategies on the seasonal performance factor has been evaluated. Results have shown that the strategy strongly affects the system consumption; therefore, it needs to be chosen appropriately in the design phase. Furthermore, when solar energy is driven into the ground, the temperature difference between solar collectors and the ground, which has to be a positive value to charge the ground, plays a fundamental role. In particular, solar thermal energy injected into the ground decreases to zero moving from a humid sub-tropical (Cfa) to a dry-summer subtropical (Csa) climate. Therefore, a compromise between the operation of the circulation pumps used for supplying free cooling energy and for driving solar thermal energy into the ground has to be found for each climate.
AB - The awareness about environmental problems due to fossil fuel consumption is increasing widely; therefore, efforts are being made to develop energy efficient and environmentally friendly systems by utilisation of non-polluting renewable energy sources. Ground source heat pumps (GSHPs) belong to this category. Many variations of geothermal system typologies exist, with different configurations suitable in different situations and most locations around the world. One emergent configuration is the solar assisted GSHP (SAGSHP). The paper focuses on different control strategies of a solar assisted ground source heat pump (SAGSHP) for different Italian locations. Dynamic simulation approach has been used through TRNSYS software. The impact of the considered strategies on the seasonal performance factor has been evaluated. Results have shown that the strategy strongly affects the system consumption; therefore, it needs to be chosen appropriately in the design phase. Furthermore, when solar energy is driven into the ground, the temperature difference between solar collectors and the ground, which has to be a positive value to charge the ground, plays a fundamental role. In particular, solar thermal energy injected into the ground decreases to zero moving from a humid sub-tropical (Cfa) to a dry-summer subtropical (Csa) climate. Therefore, a compromise between the operation of the circulation pumps used for supplying free cooling energy and for driving solar thermal energy into the ground has to be found for each climate.
UR - http://www.scopus.com/inward/record.url?scp=85051336172&partnerID=8YFLogxK
M3 - Conference article in proceedings
AN - SCOPUS:85051336172
SN - 978-88-6046-074-5
T3 - Building Simulation Applications
SP - 171
EP - 179
BT - Building Simulation Applications, BSA 2015
A2 - Gasparella, Andrea
A2 - Baratieri, Marco
A2 - Patuzzi, Francesco
A2 - Corrado, Vincenzo
PB - Bozen-Bolzano University Press
T2 - Building Simulation Applications, BSA 2015 - 2nd IBPSA-Italy Conference
Y2 - 4 February 2015 through 6 February 2015
ER -
