A Spectral Element Model for Ground Source Heat Pump Systems: Forward and Inverse Calculations

The ground source heat pump (GSHP) system is a well-established technology that utilizes a renewable energy source for heating and cooling of buildings. This technology is attractive because it relies on energy gain from shallow depths which are available nearly everywhere. Furthermore, it produces minimal CO2 emissions into the atmosphere....

Parameter identification algorithm for ground source heat pump systems

This paper presents a new parameter identification (PI) algorithm for estimating effective and detailed thermal parameters of ground source heat pump systems using data obtained from the well-known thermal response test. The PI comprises an iterative scheme coupling a semi-analytical forward model to an inverse model. The forward model is...

A spectral model for a moving cylindrical heat source in a conductive-convective domain

This paper introduces a spectral model for a moving cylindrical heat source in an infinite conductive-convective domain. This physical process occurs in many engineering and technological applications including heat conduction-convection in ground source heat pump systems, where the borehole heat exchangers likely go through layers with...

Analysis of short-to-long term heat flow in GSHP systems based on heat pump power

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...

A spectral model for heat transfer with friction heat gain in geothermal borehole heat exchangers

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...