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Thermoelectric energy storage system

A storage system and heat storage technology, which is applied in the direction of steam engine devices, machines/engines, mechanical equipment, etc., and can solve problems such as efficiency degradation

Inactive Publication Date: 2013-03-27
ABB RES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, applying the optimization principles of a refrigerator system or a heat engine system to a thermoelectric storage system is problematic because optimization of one cycle can degrade the efficiency of another cycle

Method used

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Examples

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Embodiment Construction

[0052] Figure 1a and figure 2 a shows a thermoelectric storage system 10 . Figure 1a shows energy storage circulation system or heat pump circulation system 12, and Figure 1b A discharge cycle or heat engine cycle system 14 is shown.

[0053] The thermoelectric storage system 10 is adapted to perform the following steps: a storage cycle by system 12, during which electrical energy to be stored is converted into heat; and a discharge cycle by system 14, during which thermal energy is recovered from the storage device and reverse conversion to electricity. Furthermore, a charging cycle can be followed by a storage cycle in which neither charging nor discharging cycles have to take place.

[0054] relatively Figure 1a , the thermoelectric energy storage cycle system 10 includes a working fluid circuit 16 including a zeotropic mixture as the working fluid. The working fluid is compressed to a higher pressure by compressor 18 and injected into heat exchanger 20 for exchangi...

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Abstract

A zeotropic mixture is used as a working fluid (16) for a thermoelectric energy storage system (10).

Description

technical field [0001] The invention relates to the storage of electrical energy. In particular, it relates to thermoelectric energy storage systems, methods for storing and recovering electrical energy employing thermoelectric energy storage systems, and the use of zeotropic mixtures as working fluids. Background technique [0002] With thermoelectric storage systems, the efficient concept of storing electrical energy is achieved by converting electrical energy into thermal energy that can be stored for a required time (charging of the storage device). Electrical energy can be recovered by reverse conversion from thermal energy to mechanical work and then to electricity (discharging of the storage device). [0003] The storage of electrical energy may become more and more important in the future. Baseload generators, such as nuclear power plants, and generators with randomly intermittent energy sources, such as wind turbines and solar panels, can generate excess power dur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K3/12F01K25/06
CPCF01K3/12F01K25/06
Inventor C.奥勒J.赫姆尔勒M.默坎戈茨
Owner ABB RES LTD