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Hot water tank energy storage system for solar energy medium-and-low-temperature heat utilization system

An energy storage system and solar heat collection technology, applied in the field of hot water tank energy storage system, can solve the problems of difficult operation and maintenance and high cost, and achieve the effects of reducing construction investment, reducing operation and maintenance costs, and optimizing system cost and revenue.

Inactive Publication Date: 2019-04-02
HARBIN TURBINE AUX EQUIP ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high cost and difficult operation and maintenance of the heat storage system in the existing solar energy medium and low temperature heat utilization system, and further provide a hot water tank storage system used in the solar energy medium and low temperature heat utilization system. energy system

Method used

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  • Hot water tank energy storage system for solar energy medium-and-low-temperature heat utilization system
  • Hot water tank energy storage system for solar energy medium-and-low-temperature heat utilization system

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specific Embodiment approach 1

[0019] Specific implementation mode one: see figure 1 , a hot water tank energy storage system used in a solar energy medium and low temperature heat utilization system in this embodiment, it includes a solar heat collection system 1, a heat exchange system and a thermocline hot water storage tank system, and the solar heat collection system 1 Connect with the thermocline hot water storage tank system to form a hot water tank energy storage system; wherein, the thermocline hot water storage tank system includes a water storage tank 2, a heat storage and discharge pump 3, multiple pipelines 5, and multiple instrument valves 6 And the control instrument 12, the water storage tank 2, the storage and discharge heat pump 3 and the heat user 4 are connected in series through a plurality of pipelines 5, the solar heat collection system 1 is connected to the heat exchange system, and a section of the heat exchange system is connected to the storage and discharge system through the pipe...

specific Embodiment approach 2

[0023] Specific implementation mode two: see figure 1 , the thermocline hot water storage tank system of this embodiment also includes a connecting pipe 7, one end of the connecting pipe 7 is connected to the heat exchange assembly 8, and the other end of the connecting pipe 7 is connected to the pipeline 5 The heat transfer medium passes the heat received by the solar heat collection system 1 through the heat exchange system; part of the heated water required by the heat user 4 is provided to the heat user 4 through the pipeline 7 and the valve 6, and part of it is passed through the pipeline 5 is stored in the thermocline hot water storage tank system, and the thermocline hot water storage tank system provides hot water to the heat user 4 through the pipeline 5 and the heat storage and discharge heat pump 3 . Other components and connections are the same as those in the first embodiment.

[0024] In this way, the heat transfer medium heat transfer oil transfers the heat rec...

specific Embodiment approach 3

[0025] Specific implementation mode three: see figure 1 , The heat transfer medium in the solar medium and low temperature heat utilization system of this embodiment is heat transfer oil. The heat storage medium is water working fluid (90°C to 130°C), the solar heat collection system 1 has a large scale, the temperature of the heat transfer medium is relatively high, and the capacity of the thermocline hot water storage tank system is moderate. When the weather environment is good, the hot water is directly provided by the solar heat collection system 1 and the heat exchange system. At the same time, heat is stored in the thermocline hot water storage tank system. Water is supplied by a thermocline hot water storage tank system. This implementation scheme can provide a relatively large load for the user, and the control scheme is relatively complicated.

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Abstract

The invention provides a hot water tank energy storage system for a solar energy medium-and-low-temperature heat utilization system, and relates to a hot water tank energy storage system. The hot water tank energy storage system solves the problems of high cost and difficult maintenance of a heat storage system of an existing solar energy medium-and-low-temperature heat utilization system. The hotwater tank energy storage system comprises a solar energy heat collecting system and an oblique temperature layer hot water storing tank system. The solar energy heat collecting system 1 is connectedwith the oblique temperature layer hot water storing tank system to form the hot water tank energy storage system. A water storing tank, a heat storing and discharging pump and a heat user are connected in series through a plurality of pipeline. One end of the solar energy heat collecting system communicates with the pipeline between the heat storing and discharging pump and the heat user througha pipeline. The other end of the solar energy heat collecting system communicates with the pipeline between the water storing tank and the heat storing and discharging pump and the heat user separately. Each pipeline is provided with at least one valve. The water storing tank is provided with a control instrument to control opening of the valves. The hot water tank energy storage system is adopted to the solar energy medium-and-low-temperature heat utilization system.

Description

technical field [0001] The invention relates to a hot water tank energy storage system, in particular to a hot water tank energy storage system used in a solar medium and low temperature heat utilization system. Background technique [0002] The medium and low temperature heat utilization system of solar energy converts solar energy into thermal energy through the solar heat collection system, and transmits the heat energy to the medium and low temperature (90°C to 130°C) heat users (heating, industrial steam, thermal power unit heat recovery system) through the heat exchange medium ). In order to ensure the stable delivery of photothermal heat to heat users, a heat storage system needs to be configured in the solar energy medium and low temperature heat utilization system. For conventional energy storage systems, binary salts are generally used as heat storage media. However, since the freezing point of binary salt is 220°C, it is much higher than the temperature required...

Claims

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Application Information

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IPC IPC(8): F24S10/30F24S60/30F24D19/10
CPCF24D19/1057Y02B10/20Y02B10/70
Inventor 姜晓霞崔贤基刘克为钟福春赵宇炜
Owner HARBIN TURBINE AUX EQUIP ENG
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