What are the benefits of heating energy storage charging piles

How efficient is heat transfer in an energy pile?

The efficiency of heat transfer in an energy pile depends on the design parameters concerning the characteristics of the pile, pipe, concrete, fluid, and ground. The configuration of heat exchanger pipes is found to be the most influential parameter.

What are energy piles?

Energy piles are a type of green foundations that can reduce the amount of energy consumed for space heating and cooling by up to 75%. It is inevitable that the operation of energy piles imposes heating and cooling cycles not only the pile but also the surrounding soil.

Do energy piles have a high heat transfer and bearing capacity?

Author to whom correspondence should be addressed. Energy piles, combined ground source heat pumps (GSHP) with the traditional pile foundation, have the advantages of high heat transfer efficiency, less space occupation and low cost. This paper summarizes the latest research on the heat transfer and bearing capacity of energy piles.

Why should heat flow be addressed in energy piles?

The heat flow should also be addressed to consider the actual thermal behavior of energy piles. - The thermally-induced changes of stresses and strains in energy piles depend strongly on the pile fixity and can reach critical values if the restraint conditions are not correctly defined.

How does a heat exchanger work in an energy pile?

The thermal process goes in an energy pile, as in a borehole heat exchanger, in different stages: heat transfer through the ground, conduction through pile concrete and heat exchanger pipes, and convection in the fluid and at the interface with the inner surface of the pipes (Figure 2).

Do thermal loads affect energy pile capacity?

Moreover, thermally-induced forces applied to energy piles due to compression and tension should not reach the ultimate pile capacity. The distribution of stresses and strains induced by imposed thermal loads highly depends on the degree of freedom of the pile (DOF ).