Heat capacity increasing device of heat storage tank

A technology of hot water storage tanks and water tanks, which is applied in the direction of heat storage equipment, heat exchanger types, indirect heat exchangers, etc., and can solve the problems of increasing the heat storage capacity of water tanks

Active Publication Date: 2016-08-24
BEIJING ZETA ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a thermal capacity increasing device for a hot water storage tank. The problem to be solved is to increase the heat storage capacity of the water tank by adding a

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  • Heat capacity increasing device of heat storage tank

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Embodiment Construction

[0017] The invention provides a heat capacity increasing device for a hot water storage tank.

[0018] The density of the thermal expansion device of the hot water storage tank in the present invention is the same as the density of water having the same phase transition temperature as the phase change heat storage material in the device. For example, when the phase transition temperature of the material in the device is 60°C, the total density of the device is 60 °C Density of water, namely 983kg / m 3 .

[0019] When storing heat, the initial water temperature of the water tank is lower than the phase change temperature of the device, and the device floats on the water surface to store heat first. After the phase change is completed, the water temperature rises, and the density of the water is gradually lower than the device density. sinking; when the heat storage is completed, the overall water temperature of the water tank is higher than the phase transition temperature of t...

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Abstract

The invention provides a heat capacity increasing device of a heat storage tank. The heat capacity increasing device comprises a shell and phase change heat storage material in the shell. The device has the same density as water which temperature is the same as the phase change heat storage material in the device. When the density of the phase change heat storage material is lower than the density of the water, the interior of the shell is provided with an assistant heat transmission structure which density is greater than the density of the water; when the density of the phase change heat storage material is greater than the density of the water, gas is sealed inside the shell. According to the device, the stratifying and supercooling of crystalline salt hydrate phase change material can be avoided. The heat transmission property of the device is equal or greater than the heat transmission of the water, so that a heat transmission mechanism does not need to be added in the tank for the phase change material. Furthermore, according to requirement, the device can increase the same volume of the heat storage capacity of the heat storage tank to achieve the effect of increasing the heat storage capacity.

Description

technical field [0001] The invention relates to heat storage technology, in particular to a heat capacity increasing device for a hot water storage tank. Background technique [0002] The hot water storage tank is an important energy storage tool that stores excess heat in the water tank when there is excess energy, and releases it when there is a lack of heat. It is mostly used in solar energy and low-valley electric heating systems. In reality, with the continuous improvement of urban environmental protection requirements, more and more solar heating and coal-to-electric heating supply, hot water storage tanks have become indispensable supporting equipment, many users cannot To meet the heating requirements and due to safety or system design reasons, it cannot be turned into a pressurized system, so a device that can increase the heat capacity of the tank is required. Phase-change heat storage materials can greatly increase the heat storage capacity per unit volume, and a...

Claims

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Application Information

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IPC IPC(8): F28D20/02
CPCF28D20/02Y02E60/14
Inventor 韩围棋丁晓彬刘安全朱南方周淑云张荣发
Owner BEIJING ZETA ENERGY TECH CO LTD
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