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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 ...
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 ...
Development of a topology optimization method for the design of ground heat exchangers
(International Ground Source Heat Pump Association, 2022)
A new method for sizing vertical ground heat exchangers is proposed using topology optimization to reduce the number of boreholes required to fulfill the cooling and heating demand. The ASHRAE sizing equation is adapted ...