Steam solid heat storage device and heat storage and release method thereof

Abstract

The invention discloses a steam solid heat storage device and a heat storage and release method thereof. The steam solid heat storage device comprises a heat storage body heat preservation layer, a heat storage body structure, a heat exchange fan and a coil heat exchanger. An air heat exchange runner is formed in the heat accumulator structure; the heat accumulator structure is arranged in the heat accumulator heat preservation layer, and a first reserved space and a second reserved space are formed between the first end of the heat accumulator structure and the heat accumulator heat preservation layer and between the second end of the heat accumulator structure and the heat accumulator heat preservation layer respectively. A partition baffle is arranged in the first reserved space and divides the first reserved space into a first upper reserved space and a first lower reserved space. A fan outlet of the heat exchange fan communicates with the first upper reserved space, and a fan inlet of the heat exchange fan communicates with the first lower reserved space. Two end connectors of a heat exchange coil of the coil heat exchanger are respectively connected with a steam inlet-outlet pipeline and a water inlet-outlet pipeline. The heat accumulator structure is used for storing heat of superheated steam, safety is high, and large-scale and large-flow safe storage of the steam under the low-pressure working condition can be achieved.

Description

technical field [0001] The invention belongs to the technical field of steam heat storage, and particularly relates to a steam solid heat storage device and a heat storage and release method thereof. Background technique [0002] The energy required for the rapid development of society has increased sharply, and the environmental pollution problem caused by the burning of fossil fuels is becoming more and more serious. The energy storage technology can not only use new energy to reduce greenhouse gas emissions, but also store waste heat and improve the utilization efficiency of primary energy. Peak shaving and valley filling maintain grid stability, which has attracted widespread attention. The development of thermal storage technology makes it possible to efficiently utilize solar energy and other renewable energy sources with weak stability and uneven distribution of time and space, thereby alleviating environmental pollution problems and improving energy security. [000...

AI Technical Summary

Problems solved by technology

However, the current steam storage technology relies on high-pressure and high-temperature water tanks for storage. Such steam storage equipment not only has limited heat storage, but also has high tank pressure and poor safety.

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