THERMAL ENERGY STORAGE AND RECOVERY ARRANGEMENT
First Claim
1. A thermal energy storage and recovery arrangement, the arrangement comprisinga first thermal energy storage,a compression and expansion unit coupled to the first thermal energy storage, anda second thermal energy storage coupled to the compression and expansion unit,wherein, in a charging mode,the first thermal energy storage is adapted for receiving a working medium being supplied to the thermal energy storage and recovery arrangement and for releasing thermal energy to the received working medium,the compression and expansion unit is adapted for receiving the working medium from the first thermal energy storage and for compressing the working medium,the second thermal energy storage is adapted for receiving the compressed working medium from the compression and expansion unit, for receiving thermal energy from the compressed working medium and for storing at least a part of this energy, andthe compression and expansion unit is adapted for receiving the compressed working medium from the second thermal energy storage and for expanding the compressed working medium,wherein the first thermal energy storage and the second thermal energy storage are adapted to work at a temperature being equal to or higher than the ambient temperature of the thermal energy storage and recovery arrangement.
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Accused Products
Abstract
A thermal energy storage and recovery arrangement is provided. The arrangement has a first thermal energy storage, a compression and expansion unit coupled thereto, and a second thermal energy storage coupled to the compression and expansion unit. The first and second thermal energy storage are adapted to work at a temperature equal to or higher than ambient temperature. In a charging mode, the first thermal energy storage is adapted for receiving and releasing thermal energy to a received working medium. The compression and expansion unit is adapted for receiving and compressing the working medium from the first thermal energy storage. The second thermal energy storage is adapted for receiving the compressed working medium and thermal energy therefrom and storing at least part of this energy. The compression and expansion unit is adapted for receiving the compressed working medium from the second thermal energy storage and expanding the compressed working medium.
34 Citations
16 Claims
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1. A thermal energy storage and recovery arrangement, the arrangement comprising
a first thermal energy storage, a compression and expansion unit coupled to the first thermal energy storage, and a second thermal energy storage coupled to the compression and expansion unit, wherein, in a charging mode, the first thermal energy storage is adapted for receiving a working medium being supplied to the thermal energy storage and recovery arrangement and for releasing thermal energy to the received working medium, the compression and expansion unit is adapted for receiving the working medium from the first thermal energy storage and for compressing the working medium, the second thermal energy storage is adapted for receiving the compressed working medium from the compression and expansion unit, for receiving thermal energy from the compressed working medium and for storing at least a part of this energy, and the compression and expansion unit is adapted for receiving the compressed working medium from the second thermal energy storage and for expanding the compressed working medium, wherein the first thermal energy storage and the second thermal energy storage are adapted to work at a temperature being equal to or higher than the ambient temperature of the thermal energy storage and recovery arrangement.
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14. A method for storing and recovering thermal energy in a thermal energy storage and recovery arrangement, the method comprising
in a charging mode, receiving, by a first thermal energy storage, a working medium being supplied to the thermal energy storage and recovery arrangement and releasing, by the first thermal energy storage, thermal energy to the received working medium, receiving, by a compression and expansion unit coupled to the first thermal energy storage, the working medium from the first thermal energy storage and compressing, by the compression and expansion unit, the working medium, receiving, by a second thermal energy storage coupled to the compression and expansion unit, the compressed working medium from the compression and expansion unit, receiving, by the second thermal energy storage, thermal energy from the compressed working medium and storing at least a part of this energy in the second thermal energy storage, and receiving, by the compression and expansion unit, the compressed working medium from the second thermal energy storage and expanding, by the compression and expansion unit, the compressed working medium, wherein the first thermal energy storage and the second thermal energy storage are adapted to work at a temperature being equal to or higher than the ambient temperature of the thermal energy storage and recovery arrangement.
Specification