A dual-purpose heat storage device for industrial and residential use with constant temperature heat storage and multi-temperature heat supply and its realization method

Abstract

Disclosed is a constant temperature heat storage and multi-temperature heat supply industrial-civil dual-purpose heat storage device. The constant temperature heat storage and multi-temperature heat supply industrial-civil dual-purpose heat storage device is characterized in that the device comprises a heat storage room; a box body is arranged inside the heat storage room and fixedly connected with the heat storage room; a hot air channel is formed between the box body and the heat storage room; a heater is disposed at the bottom of the hot air channel and fixedly connected with the bottom of the hot air channel; N annular spaced walls are connected in a sleeved mode from inside to outside and fixedly connected with the box body; a central water tank and N-1 annular water tanks are formed among the annular spaced walls, and therefore a multi-temperature water tank is formed; the temperature of hot water in the multi-temperature water tank is decreased in sequence from inside to outside; outlets and inlets of the annular water tanks are in sealed connection with a heat load and a multi-temperature heat source correspondingly; and a temperature stabilizing water tank is formed between the annular spaced wall on the outermost side and the box body. An implementation method includes design calculation and operation adjustment, wherein the design calculation includes the steps of setting the number of layers of the annular spaced walls, optimizing the size of a design structure, calculating the thickness of the annular spaced walls, determining heat dissipating capacity and checking a set value, and the operation adjustment includes the steps of on-line determining of a heat exchange process that hot air flows through the hot air channel and the outer wall of the multi-temperature water tank and on-line determining of a heat dissipating process from the multi-temperature water tank to the environment.

Description

technical field [0001] The invention relates to the technical field of thermal energy utilization, and relates to a dual-purpose heat storage device for industrial and civilian use with zero heat pollution, constant temperature heat storage, and multi-temperature heat supply and a realization method thereof. Background technique [0002] According to statistics, more than 58% of all energy consumed by human beings is consumed in the form of heat energy, and heat consumption less than 100°C accounts for more than 35% of heat energy consumption. So far, energy consumption still focuses on fossil fuels. In 2014 alone, oil accounted for 32.6% of global primary energy consumption, natural gas accounted for 23.7%, and coal accounted for 30%. The share of renewable energy in the primary energy structure has become the consensus of all countries in the world. [0003] Solar energy is the most important basic energy source among renewable energy sources. It is "inexhaustible, inexha...

AI Technical Summary

Problems solved by technology

Statistics in 2010 show that industrial waste heat resources account for about 67% of the total heat of fuel, of which the recovery rate reaches 60%. However, the overall utilization rate of waste heat resources in my country is low, and the waste heat utilization rate of large iron and steel enterprises is only 30%~ around 50%

[0008] To sum up, randomness, volatility, and intermittency are the characteristics of renewable energy, which lead to the contradiction between energy supply and demand in the renewable energy utilization system.

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