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Geothermal storage integration into supermarket's CO2 refrigeration system
(International Ground Source Heat Pump Association, 2018)
This paper investigates the integration of geothermal storage into the state-of-the-art CO2 trans-critical booster systems. The objective is to evaluate the impact on energy efficiency of this integration. Three scenarios ...
Experimental setup to measure the heat-exchange processes by controlling thermal and hydraulic conditions
(International Ground Source Heat Pump Association, 2018)
The design of a Borehole Heat Exchanger (BHE) is based on the evaluation of the thermal exchange capacity of the whole system constituted by the probes and the surrounding ground. The energy performance of a BHE mainly ...
Thermal analysis models of deep borehole heat exchangers
(International Ground Source Heat Pump Association, 2018)
With the advantages of much less land demand and higher temperature available, the deep borehole heat exchanger (DBHE) gets down to a depth of 1000-3000 m below the ground surface, and provides a new variance of ground-coupled ...
Upgrade of the B2G dynamic geothermal heat exchanger model: Optimal location of the ground nodes
(International Ground Source Heat Pump Association, 2018)
In order to optimize the design and operation of a ground source heat pump system, the modeling of the Borehole Heat Exchanger (BHE) and its coupling to the heat pump operation becomes crucial. This becomes key for those ...
Thermal influence of neighbouring GSHP installations: Relevance of heat load temporal resolution
(International Ground Source Heat Pump Association, 2018)
In densely populated areas where many ground source heat pump (GSHP) systems are present, it becomes important to consider the thermal influence of neighbouring GSHP installations while designing these systems. This question ...
Newton-Raphson method applied to the time-superposed ILS for parameter estimation in Thermal Response Tests
(International Ground Source Heat Pump Association, 2018)
Thermal Response Testing is now a well-known and widely-used method allowing the determination of the local thermal or geometrical properties of a Borehole Heat Exchanger (BHE), those properties being critical in the design ...
Impacts of injection temperature on the relevant heat transport processes in groundwater heat pump (GWHP) systems
(International Ground Source Heat Pump Association, 2018)
In many hydrogeological applications, the influence of temperature on fluid density and viscosity have often been neglected. However, high contrasts in temperature which occurs in the field applications such as groundwater ...
Parameters optimization of ground source heat pump system combined energy consumption and economic analysis using Taguchi method
(International Ground Source Heat Pump Association, 2018)
In order to obtain a high performance and low cost of ground source heat pump (GSHP) system, a methodology based on Taguchi method and analysis of variance (ANOVA) is used to optimize design parameters of GSHP systems. ...
Impact of a demand-side management strategy in operating a hybrid geo-district energy system for a high-rise mixed-use residential building in Toronto, Canada
(International Ground Source Heat Pump Association, 2018)
In Ontario, Canada, the building thermal energy market is largely driven by the low cost of natural gas as a heating fuel source, with natural gas rates being approximately five times less per unit energy than electricity. ...
Dynamic modeling of flow boiling within plate heat exchangers for heat pump and refrigeration applications
(International Ground Source Heat Pump Association, 2018)
Brazed Plate Heat Exchangers (BPHEs) are increasingly used as evaporators for refrigeration and heat pump applications. Detailed understanding of the underlying heat transfer phenomena is required for their effective design ...