Heat accumulation water tank with new structure

A heat storage tank, a new structure technology, applied in the direction of heating devices, solar thermal devices, solar thermal power generation, etc., can solve the problem of weakening the degree of thermal stratification inside the water tank, so as to improve heat storage efficiency, improve system efficiency, and improve thermal efficiency. The effect of degree of stratification

Active Publication Date: 2014-08-27
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the mixing of hot and cold fluids and heat conduction, the degree of thermal stratification inside the water tank will inevitably be weakened to a certain extent.

Method used

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  • Heat accumulation water tank with new structure
  • Heat accumulation water tank with new structure
  • Heat accumulation water tank with new structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 2 As shown, this embodiment is a heat storage tank using an external heat exchanger, wherein the inside of the heat storage tank is equipped with such figure 1 The partition plate and hot and cold fluid passage structure shown. The heat storage tank consists of a box body 201, an internal partition 101, an external heat exchanger 203, an insulation layer 204, and necessary water pipes and valves. The partition 101 is provided with a hot fluid channel 102 and a cold fluid channel 103. The box body 201 has a diameter of 0.6 meters and a height of 0.7 meters, and is made of stainless steel. Two layers of partitions 101 are arranged in the water tank, with heights of 0.23 meters and 0.46 meters respectively. Partition boards use rigid foam plastic boards with good thermal insulation properties. Two groups of fluid passages are arranged on each partition, and the number of hot and cold fluid passages is equal. The channel has a height of 5 cm and a diamet...

Embodiment 2

[0030] Such as image 3 As shown, this embodiment is a heat storage tank with a built-in heat exchanger, wherein the partitions and hot and cold fluid channels inside the heat storage tank are arranged as follows figure 1 shown. The heat storage tank consists of a box body 301, an internal partition 101, a built-in heat exchanger 303, an insulation layer 304, and necessary water pipes and valves. The partition 101 is provided with a hot fluid channel 102 and a cold fluid channel 103. The box body 301 has a diameter of 0.6 meters and a height of 0.7 meters, and is made of stainless steel. Two layers of partitions 101 are arranged in the water tank, with heights of 0.23 meters and 0.46 meters respectively. Partition boards use rigid foam plastic boards with good thermal insulation properties. Two cold fluid passages 103 and one hot fluid passage 102 are installed on each partition 101 . The cold fluid channel 103 has a height of 5 cm and a diameter of 2 cm, arranged symmetri...

Embodiment 3

[0033] Such as Figure 4 As shown, this embodiment is a heat storage tank using an outer cladding heat exchanger, wherein the partitions and hot and cold fluid channels inside the heat storage tank are arranged as follows figure 1 shown. The hot water storage tank is composed of a box body 401, an internal partition 101, an outer cladding heat exchanger 403, an insulation layer 404, and necessary water pipes and valves. The partition 101 is provided with a hot fluid channel 102 and a cold fluid channel. 103. The box body 401 has a diameter of 0.6 meters and a height of 0.7 meters, and is made of stainless steel. Two layers of partitions 101 are arranged in the water tank, with heights of 0.23 meters and 0.46 meters respectively. Partition boards use rigid foam plastic boards with good thermal insulation properties. The upper baffle is provided with two sets of fluid passages with equal numbers of hot and cold fluid passages. The channel has a height of 5 cm and a diameter...

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Abstract

The invention relates to a heat accumulation water tank with a new structure. Based on a traditional heat accumulation water tank, a plurality of separator plates are arranged in the water tank in the gravity direction for dividing the heat accumulation water tank into a plurality of layers. A plurality of holes are formed in each of the separator plates. Aligned to the holes, straight pipes are connected with the upper parts or the lower parts of the separator plates; and the pipe diameters are equal to the hole diameters. The pipes positioned at the upper parts of the separator plates form a hot fluid channel; and the pipes positioned at the lower parts of the separator plates form a cold fluid channel. The structures of separator plates and the cold and hot fluid channels reduce the natural convection in the water tank, and the structures prevent the mixing of cold and hot fluids in the water tank. Compared with the traditional heat accumulation water tank, the heat accumulation water tank with the new structure can reduce the heat dissipating capacity of the heat accumulation water tank and largely increase the thermal stratification degree of the water tank so as to improve the heat accumulation efficiency of the water tank and the system efficiency of a solar water heating system.

Description

technical field [0001] The invention relates to a heat storage tank, in particular to a heat storage tank capable of enhancing the internal heat stratification degree. Background technique [0002] Due to the influence of weather factors such as day and night and cloudy days, solar energy is an intermittent energy source, which cannot meet the supply requirements in terms of time and quantity. For this reason, in the process of utilizing solar energy, heat storage devices must be used to store the absorbed solar energy. The hot water storage tank is the energy storage device in the solar water heating system and is an important part of the system. During the heat storage process, the heat exchange working medium of the solar collector circuit exchanges heat with the heat storage medium inside the heat storage tank, and stores the absorbed solar heat in the heat storage tank; during the heat release process, The hot water storage tank releases heat to heat users, provides h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/46F24J2/34
CPCY02E10/40
Inventor 杨征陈海生王亮贺凤娟盛勇
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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