Solid heat storage method

A heat method and heat storage technology, which can be applied to heat storage equipment, indirect heat exchangers, heat exchanger types, etc., can solve problems such as waste of energy utilization, and achieve the effects of enhanced heat exchange effect, high cost performance, and flexible heat exchange.

Pending Publication Date: 2022-07-15
HUANENG CLEAN ENERGY RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a solid thermal heat storage method to solve the problem of energy waste due to the transformation of high-grade energy into low-grade energy in the existing electric heat storage technology

Method used

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Embodiment approach

[0041] like image 3 and 4 As shown, the embodiment of the present invention provides a solid heat thermal storage method, comprising the following steps:

[0042] S1: The superheated steam enters the steam-water separator 1 through the superheated section coil 6; during this process, the superheated steam in the superheated section coil 6 is gradually reduced to the saturation temperature, and the heat is transferred to the refractory of the superheated section 7 through convection heat transfer and heat conduction Bricks, the temperature of the refractory bricks in the superheating section 7 is gradually increased, and the heat is transferred from the superheated steam to the refractory bricks in the superheating section 7 and stored;

[0043] S2: The steam after cooling becomes saturated steam, which exists in the steam-water separator 1 and the heat exchanger 2. The first driving fan 3 is running, and the second driving fan 4 is stopped, so that the air in the air duct 9 ...

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Abstract

The invention discloses a solid heat storage method. The solid heat storage method comprises the following steps: superheated steam enters a steam-water separator through a superheating section coil pipe; the cooled steam is changed into saturated steam, the first driving fan runs, and the second driving fan stops running; steam releasing latent heat in the heat exchanger is changed into saturated water to enter a preheating section coil pipe of the preheating section, and heat is transferred into the preheating section. Low-temperature feed water passes through a preheating section coil pipe, heat in a preheating section is transferred into supercooled water in the preheating section coil pipe, a first driving fan stops running, a second driving fan runs, and heat is transferred into saturated steam of a heat exchanger from an evaporation section; and saturated steam of the heat exchanger enters an overheating section coil pipe of the overheating section. According to the solid heat storage method, the steam heat energy is stored through solid heat storage, the energy utilization rate is increased, the technology of converting high-grade energy into low-grade energy in the prior art is replaced, and energy waste is avoided.

Description

technical field [0001] The invention belongs to the technical field of heat storage, and in particular relates to a solid heat heat storage method. Background technique [0002] The installed capacity of wind power and photovoltaic power generation is increasing day by day, and its proportion in the power grid is increasing, which requires thermal power units to perform deep peak regulation at an appropriate time to reduce the power generation load. As a flexible peak-shaving method that can realize the decoupling of hot spots, thermal storage technology has been widely used in many thermal power companies. [0003] At present, the thermal storage devices in thermal power enterprises are mainly electric thermal storage. This kind of heat storage device uses the rich power of the power plant to convert electrical energy into heat energy, which belongs to the conversion of high-grade energy to low-grade energy. Although this heat storage device can solve the peak regulation p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/00
CPCF28D20/0056F28D2020/0008F28D2020/0017F28D2020/0078
Inventor 杜藏宝朱建新杨豫森张帅
Owner HUANENG CLEAN ENERGY RES INST
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