What is energy pile?

The energy pile concept can be considered as a to cool/heat buildings is the heat pump (HP) system. Unlike the vast cost of drilling boreholes and the land area required for borehole could be readily employed almost anywhere. Although HPs are installation.

Why do buildings need a group of energy piles?

Adjacent energy piles The heat transfer capacity of a single pile is usually insufficient to cover the heating and cooling loads of a building. Thus, buildings require the activation of a group of piles to meet the thermal loads.

How to develop an optimal energy pile system?

The development of an optimal energy pile system involves complex analyzes. It comprises the selection of objective functions, the detection of decision variables and system design constraints, then the best optimization method.

How do energy piles work?

Creating an energy pile is a relatively simple process powered by electricity, they supply more heating/cooling at a more a cast-in-place concrete pile, as shown in Figure 1. Each flexible than direct electric methods. In principle, HPs use electricity to is fitted into the pile reinforcement cages.

Are energy piles elastic?

The deformation of energy piles is elastic. Thermal strains are higher for piles with W-tube compared to piles with spiral coil and U-tube. No significant structural effects of thermal cycles on energy piles after one year of operation for temperature variation within 2 °C. Considerable tensile axial stress appears in the pile during cooling mode.

Are energy piles based on energy performance?

Many studies have been conducted or are ongoing to examine the performance of energy piles. Most of them are based on energy performance, but many recent studies have also been published to understand their thermo-mechanical behavior through in situ experiments, laboratory tests, and numerical analyses.