Supercritical carbon dioxide heat supply system for peak-load shifting of distributed energy resource

A distributed energy, peak-shaving and valley-filling technology, applied in heating systems, household heating, household heating, etc., can solve the problems of low efficiency, power supply coal consumption and pollutant emissions increase, so as to improve the ecological environment and increase energy Utilization efficiency, effect of improving stability

CN107606677APending Publication Date: 2018-01-19HUANENG POWER INTERNATIONAL +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-01-19

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Abstract

The invention discloses a supercritical carbon dioxide heat supply system for peak-load shifting of distributed energy resources. The supercritical carbon dioxide heat supply system comprises a heat pump and vortex tube system and a heat storage and supply system. According to the supercritical carbon dioxide heat supply system, surplus electric energy generated by the distributed energy resourcessuch as wind energy and solar energy is balanced out through a heat pump and the heat storage system. By means of a vortex tube, the requirement of the system for the compression ratio of a working medium compressor can be greatly lowered; cost is lowered; and practicability of the system is improved. Compared with a common heat pump heat supply system, the supercritical carbon dioxide heat supply system has the obvious beneficial effects that the actual capacity, namely consumption and absorption of the renewable energy sources, of a power grid can be greatly increased; the peak-load shifting effect is achieved; and the system contributes to pollution reduction and environmental protection.
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Description

technical field

[0001] The invention belongs to the field of distributed energy storage and heating, and in particular relates to a supercritical carbon dioxide heating system used for peak-shaving and valley-filling of distributed energy. Background technique

[0002] Fossil energy will eventually be exhausted. At the same time, as environmental protection and pollution issues are increasingly valued by people, in recent decades, renewable energy such as wind energy, solar energy, and tidal energy have developed rapidly as clean energy, and their proportion in the world's energy structure is getting higher and higher. . The installed capacity of renewable energy in my country has increased rapidly. However, renewable energy sources such as wind energy and solar energy have discontinuous, unstable, and uncontrollable unsteady characteristics. In addition, the dislocation contradiction between the distribution of high-quality wind and light resources in my country and the di...

Examples

Embodiment Construction

[0013] The present invention is described in further detail below in conjunction with accompanying drawing:

[0014] refer to figure 1 According to the present invention, a supercritical carbon dioxide heating system for distributed energy peak shaving and valley filling includes a heat pump plus vortex tube system, heat storage and heat supply system. The heat pump plus vortex tube system includes a compressor 1, a first heat storage heat exchanger 2, a vortex tube 3, a second heat storage heat exchanger 4, and a heater 5. The outlet of the compressor 1 is connected to the first heat storage heat exchanger 2. The mass side inlet is connected, the working medium side outlet of the first heat storage heat exchanger 2 is connected with the inlet of the vortex tube 3, the high temperature side outlet of the vortex tube 3 is connected with the working medium side inlet of the second heat storage heat exchanger 4, and the vortex tube The low-temperature side outlet of 3 is connect...