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N.H.N. Bni Lam

8 records found

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 ...
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 inpu ...
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-analyt ...
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. Furth ...
A semi-analytical model for simulating transient conductive-convective heat flow in a three-dimensional shallow geothermal system consisting of multiple borehole heat exchangers (BHE) embedded in a multilayer soil mass is introduced. The model is formulated in three steps, starti ...
A comprehensive spectral element formulation for nonhomogeneous heat flow in a shallow geothermal system consisting of a borehole heat exchanger embedded in a multilayer soil mass is introduced. The spectral element method is utilized to solve the governing heat equations in the ...
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 govern ...
In this paper, we introduce analytical solutions for transient heat conduction in an infinite solid mass subjected to a varying single or multiple cylindrical heat sources. The solutions are formulated for two types of boundary conditions: a time-dependent Neumann boundary condit ...