Arrangement and a method for storing thermal energy in the ground
OwnerJakob Isaksson, Karl Johan Hogmalminventors
Life of this patent
Estimating the term…
Abstract
An arrangement for storing thermal energy includes a circuit containing a working fluid, where the circuit has a plurality of pipes which pipes are distributed throughout a volume of the ground forming a heat storage. Each pipe is arranged in a channel in the ground for heat exchange between the working fluid and the ground. The arrangement includes an electrical heating element, where the electrical heating element is arranged in a channel in the ground to heat the ground for storing thermal energy in the heat storage. The working fluid is a liquid having a boiling point above 120° C. at atmospheric pressure.
Claims15
An arrangement for storing thermal energy, the arrangement comprising
- a circuit containing a working fluid, the circuit having a plurality of pipes which pipes are distributed throughout a volume of the ground forming a heat storage, each pipe being arranged in a channel in the ground for heat exchange between the working fluid and the ground, and
- an electrical heating element, the electrical heating element being arranged in a channel in the ground to heat the ground for storing thermal energy in the heat storage, wherein the working fluid is a liquid having a boiling point above 120° C. at atmospheric pressure.
A method for storing thermal energy, comprising the steps of
- heating a volume of the ground forming a heat storage, by an electrical heating element, the electrical heating element being arranged in a channel in the ground to heat the ground for storing thermal energy in the heat storage, and
- transferring heat from the heat storage to an energy carrier for energy supply, by a circuit containing a working fluid, the working fluid being a liquid having a boiling point above 120° C. at atmospheric pressure, the circuit having a plurality of pipes which pipes are distributed throughout said volume of the ground, each pipe being arranged in a channel in the ground for heat exchange between the working fluid and the ground.
Dependencies are inferred from the claim text.