Browsing Proceedings of the IGSHPA Research Track 2022 by Title
Now showing items 15-33 of 33
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Ground heat exchanger design tool with rowwise placement of boreholes
(International Ground Source Heat Pump Association, 2022)Simulation-based design tools have been used since the late 1980s for designing ground heat exchangers (GHE) used with ground source heat pump (GSHP) systems. The ground heat exchanger simulations used in these tools rely ... -
Ground heat exchanger performance with variable speed ground-source heat pumps
(International Ground Source Heat Pump Association, 2022)The objective of this paper is to compare the required length and performance of ground heat exchangers as well as heat pump energy consumption for fixed and variable speed ground-source heat pumps. In the first part of ... -
Ground heat exchangers with large diameter pipes: What are the benefits?
(International Ground Source Heat Pump Association, 2022)The geothermal industry has recently been opting for large high-density polyethylene pipes to design vertical ground heat exchangers of ground-coupled heat pump system. Thus, we hypothesized that large diameter pipes can ... -
Impact analysis of heating electrification in US buildings with geothermal heat pumps
(International Ground Source Heat Pump Association, 2022)Few studies have investigated the impacts of large-scale deployment of geothermal heat pumps (GHPs, also called ground source heat pumps) on the electric grid. GHPs utilize the ground as a heat source to warm buildings ... -
Impacts of prospective LEED building's energy loads on a borehole heat exchanger: A case study in Central Illinois
(International Ground Source Heat Pump Association, 2022)Assessing the thermal behavior in the subsurface surroundings of a borehole heat exchanger (BHE) is necessary for evaluating the performance of GSHP systems. In this study we undertook a preliminary thermal analysis on a ... -
Influence of buildings on geothermal boreholes – a comparison between two models
(International Ground Source Heat Pump Association, 2022)The spread of ground source heat pumps has led to the development of several models to estimate the thermal interference between independent geothermal boreholes in densely populated areas. Some of these models take into ... -
Investigation of design and control strategies for combining Photovoltaic Thermal (PVT) solar modules with ground-source heat pump systems: Case example for net zero building in a moderately cold climate
(International Ground Source Heat Pump Association, 2022)A synergistic coupling of a ground source heat pump (GSHP) system with photovoltaic thermal (PVT) modules for a cooling dominated net-zero building in a moderately cold climate is presented in this study. As individual ... -
Long-term GSHP system performance measurement in the USA and Europe
(International Ground Source Heat Pump Association, 2022)This paper presents an overview of the International Energy Agency (IEA) technology collaboration program Heat Pumping Technologies (HPT) Annex 52, "Long term performance measurement of ground source heat pump (GSHP) systems ... -
Long-term sustainable operation of hybrid geothermal systems through optimal control
(International Ground Source Heat Pump Association, 2022)Hybrid geothermal systems such as hybrid GEOTABS typically comprise a geothermal heat pump that supplies the main building thermal energy needs, complemented by a fast-reacting supplementary production and/or emission ... -
Machine-learning-based models for predicting the performance of ground-source heat pumps using experimental data from a residential smart home in California
(International Ground Source Heat Pump Association, 2022)Ground-source heat pumps (GSHP) reject (extract) heat to a lower (higher) temperature sink (source) as compared with air-source heat pumps which allows them to operate more efficiently. With the rapid development in the ... -
Modeling and performance evaluation of fractured thermal energy storage (FTES)
(International Ground Source Heat Pump Association, 2022)Fractured thermal energy storage (FTES) is an open-loop type system that uses hydraulically propagated horizontal fracture planes for storage and extraction of heat in low-permeability hard rock formations. Groundwater ... -
Novel tool and guidelines for ground source heat pumps in densely populated areas: a Swedish project
(International Ground Source Heat Pump Association, 2022)With one system installed for every twenty inhabitants, Sweden is by far the country with the highest penetration of Ground Source Heat Pumps (GSHPs). Unsurprisingly, it has initiated a project to support designers and ... -
Open library of g-functions for 34,321 configurations
(International Ground Source Heat Pump Association, 2022)Thermal response functions, known as g-functions, are commonly used in ground heat exchanger design tools and whole building energy simulation programs to simulate the ground heat exchanger performance. Calculation of ... -
Potential mapping of ground source heat pump systems considering groundwater pumping
(International Ground Source Heat Pump Association, 2022)The pumping of groundwater near GHEs improves the performance of GSHP systems due to the advection of the induced roundwater flow when the hydraulic conductivity of the formation is favorable. To quantify the effect, we ... -
pygfunction 2.2 : New features and improvements in accuracy and computational efficiency
(International Ground Source Heat Pump Association, 2022)Recent improvements to pygfunction, an open-source tool for the calculation of ??-functions, are presented. The latest version 2.2 enables the calculation of ??-functions for fields containing inclined boreholes. Various ... -
Stationary and non-stationary deconvolution to recover long-term transfer functions
(International Ground Source Heat Pump Association, 2022)To design a ground heat exchanger, simulations are frequently used. One way to perform simulations is to use the well-known g-functions to obtain the ground temperature. These functions are usually obtained by analytical ... -
Technical and economic evaluation of a ground source heat pump with thermal and battery energy storage systems for residential dwellings in Quebec
(International Ground Source Heat Pump Association, 2022)Ground source heat pump (GSHP) systems have been identified as promising solutions to help buildings achieve future carbon neutral targets. However, two main barriers decelerate the wide adoption of this technology in every ... -
Transient heat transfer in ground heat exchangers under groundwater flow
(International Ground Source Heat Pump Association, 2022)An analytical solution for the transient heat transfer under groundwater flow for ground heat exchangers (GHEs) is presented. The method is an extension of the transient multipole expansion that describes the transient ... -
Uncertainty assessment of the hydraulics properties surrounding a standing column well with a thermal response test
(International Ground Source Heat Pump Association, 2022)The standing column well (SCW) is known for being a highly efficient ground heat exchanger as it relies on both conduction and advection heat transfer processes. Therefore, the interpretation of a thermal response test ...