Accumulate heat in summer with an underground domestic thermal battery.

Everyone has an obsessive secret dream. That of the writer is certainly not the most adventurous: being able to capture the overabundant Sun energy during the summer, to then be able to use it in winter to heat the house.

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Applied Thermal Engineering
Volume 164, 5 January 2020, 114460

A novel shallow bore ground heat exchanger for ground source heat pump applications—Model development and validation

•A novel low-cost ground heat exchanger (GHE) was introduced.
•A one-dimensional (1D) model of the new GHE was developed and validated.
•The 1D model is computationally much more efficient than 3D model.
•New GHE has similar performance as and lower cost than conventional GHE.