WO2017092179A1 - 一种具有低谷电加热蓄能的二次换热供热系统 - Google Patents

一种具有低谷电加热蓄能的二次换热供热系统 Download PDF

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Publication number
WO2017092179A1
WO2017092179A1 PCT/CN2016/074123 CN2016074123W WO2017092179A1 WO 2017092179 A1 WO2017092179 A1 WO 2017092179A1 CN 2016074123 W CN2016074123 W CN 2016074123W WO 2017092179 A1 WO2017092179 A1 WO 2017092179A1
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Prior art keywords
heat storage
water tank
heat
heat exchange
constant pressure
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PCT/CN2016/074123
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English (en)
French (fr)
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宋世海
王子乐
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宋世海
王子乐
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Application filed by 宋世海, 王子乐 filed Critical 宋世海
Publication of WO2017092179A1 publication Critical patent/WO2017092179A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F24D19/1057—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00—Arrangements for storing heat collected by solar heat collectors
    • F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/32—Heat sources or energy sources involving multiple heat sources in combination or as alternative heat sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems

Definitions

  • the invention relates to a secondary heat exchange heating system with low valley electric heating energy storage, belonging to the field of energy utilization.
  • Building energy consumption mainly includes heating, air conditioning, hot water supply, ventilation, lighting, etc., of which heating and air conditioning consume more energy, followed by hot water supply.
  • Solar energy is a renewable energy source, and solar collectors have remarkable characteristics such as pollution-free, energy-saving, environmental protection and safety. Solar energy is mainly used for hot water supply, and it is less involved in winter heating.
  • the object of the present invention is to provide a secondary heat exchange heating system with low valley electric heating and energy storage, so as to achieve energy saving and environmental protection, low use cost, reasonable energy utilization and convenient use and management.
  • a secondary heat exchange heating system with low valley electric heating energy storage comprises: a valley electric heat storage device, a heat storage constant pressure water tank, a plate heat exchanger secondary heat exchange device, an intelligent control device, and the specific structure is as follows :
  • the heat storage constant pressure water tank is arranged above the valley electric heat storage device, and the heat storage constant pressure water tank is connected with the user's heating system through the heat preservation pipeline and the valve and the valley electric heat storage device and the plate heat exchanger secondary heat exchange device, and the intelligence
  • the control device respectively controls the water outlet temperature of the heat storage constant pressure water tank and the heat storage capacity of the valley electric heat storage device, and the secondary heat exchange device of the plate heat exchanger controlled by the intelligent control device supplies the heat energy to the user heating system;
  • the outlet of the valley electric heat storage device is connected to one end of the return pipe I, and the other end of the return pipe I is connected to the upper part of the heat storage constant pressure water tank, and the heat storage constant pressure water tank is connected with the outlet pipe I and the outlet pipe II respectively, and the outlet pipe I is connected to the plate heat exchanger secondary heat exchange device through the pipeline, and the plate heat exchanger secondary heat exchange device is connected to the water inlet of the valley electric heat storage device through the return water pipe V, and the bypass and the back are set on the return water pipe V.
  • the water pipe IV is merged and connected to the upper portion of the heat storage constant pressure water tank, and a steam recovery device is disposed at a position where the return pipe IV communicates with the top of the heat storage constant pressure water tank.
  • the secondary side water outlet of the device is connected to the water supply pipe of the user heating system through the pipeline.
  • the secondary heat exchange heating system with low valley electric heating energy storage the plate heat exchanger secondary heat exchange device is arranged on the pipeline connecting the user heating system and the valley electric heat storage device, and the water outlet pipe I and the plate type are exchanged.
  • a primary circulation pump is arranged on the pipeline connecting the secondary heat exchange device of the heat exchanger, and the secondary heat exchange device of the plate heat exchanger is connected to the outlet pipe of the primary circulation pump and the secondary circulation pump through the pipeline.
  • the secondary heat exchange heating system with low valley electric heating energy storage is provided with an electric shut-off valve and an electric flow regulating valve on the return water pipe V.
  • the secondary heat exchange heating system with low valley electric heating energy storage is provided with a water spray pump on the water outlet pipe II.
  • the secondary heat exchange heating system with low valley electric heating energy storage is provided with an expansion water tank in the user heating system, a floating ball water supply device is arranged on the expansion water tank, and an automatic exhausting is arranged at a high point of the water supply pipeline of the user heating system. valve.
  • the secondary heat exchange heating system with low valley electric heating energy storage a static pressure line is arranged in the heat storage constant pressure water tank, and an overflow water sealing device is arranged at a horizontal upper position of the side surface of the heat storage constant pressure water tank and the static pressure line
  • the regenerative constant pressure water tank is provided with a water supply pipe, the hydration water is dewatered, the regenerative constant pressure water tank is provided with a float ball valve, and the float ball valve is connected with the cut-off valve on the water supply pipe.
  • the secondary heat exchange heating system with low valley electric heating energy storage the valley electric heat storage device is arranged in the bottom floor or the underground room of the building, and the valley electric heat storage device is a modular structure that changes the heat storage capacity according to needs.
  • the valley electric heat storage device is provided with a metal frame structure and a metal outer casing, the metal frame structure has a built-in energy storage material, and a heat conducting serpentine tube and a valley electric heating component are arranged in the energy storage material.
  • the secondary heat exchange heating system with low valley electric heating energy storage further comprises a solar heat collector, wherein the water inlet of the solar heat collector communicates with the lower part of the side of the heat storage constant pressure water tank through the pipeline, A collector circulation pump is provided on the pipeline.
  • the secondary heat exchange heating system with low valley electric heating energy storage the water outlet pipe of the solar collector is provided with a float switch and a vent pipe, and a bypass is provided between the water inlet and the water outlet of the collector circulating pump A normally closed valve is disposed on the bypass.
  • the secondary heat exchange heating system with low valley electric heating energy storage can include a heat storage constant pressure water tank, a valley electric heat storage device filled with an energy storage material (metal oxide or phase change material), and a plate heat exchanger 2 Secondary heat exchange device, etc., wherein: the heat storage constant pressure water tank, the valley electric heat storage device filled with the energy storage material (metal oxide or phase change material) is connected through the heat preservation pipe and the valve, and the electric heating device is used to heat the valley electric power. Time and heating temperature are controlled to ensure a stable and continuous supply of heat.
  • the valley electric heat storage device adopts a metal frame structure and a metal outer casing, and lays a high temperature resistant heat insulating material on the outer side of the heat storage device, thereby reducing the heat loss of the valley electric heat storage device.
  • the invention fully utilizes the low-cost electric energy of the nighttime valley electricity period through the organic combination of the valley electric heat storage device, the heat storage constant pressure water tank, the plate heat exchanger secondary heat exchange device, the intelligent control device and the circulation pipeline thereof, While meeting people's winter heating needs, the goal of energy saving and environmental protection and reducing heating costs has been achieved.
  • the intelligent control device of the device of the invention can realize unmanned management and scientific operation, and meets the heating demand of the people, reduces the time and effort spent on the management of the heating system, and greatly improves and improves the quality of life of the people.
  • Figure 1 is a schematic view showing the structure of an embodiment of the present invention.
  • FIG. 2 is a schematic structural view of another embodiment of the present invention.
  • 1 valley electric heat storage device 1 heat storage constant pressure water tank; 3 primary circulation pump; 4 secondary circulation pump; 5 plate heat exchanger secondary heat exchange device; 6 electric stop valve; 7 electric flow regulating valve; 8 expansion water tank; 9 water pump; 10 steam recovery; 11 automatic exhaust valve; 12 return water pipe V; 13 intelligent control device; 14 collector circulation pump; 15 float switch; 16 solar collector; I; 18 outlet pipe II; 19 return pipe I; 20 return pipe II; 21 return pipe III; 22 return pipe IV; 101 heat transfer serpentine; 102 energy storage material; 103 metal casing; 104 valley electric heating component.
  • the present embodiment has a secondary heat exchange heating system with low valley electric heating energy storage, mainly including: valley electric heat storage device 1 , heat storage constant pressure water tank 2 (closed type), plate heat exchanger 2
  • valley electric heat storage device 1 heat storage constant pressure water tank 2 (closed type)
  • plate heat exchanger 2 The secondary heat exchange device 5, the solar heat collector 16, the intelligent control device 13, etc., the specific structure is as follows:
  • the water inlet of the solar collector 16 is connected to the lower portion of the side of the heat storage constant pressure water tank 2 through a pipeline, and a collector circulation pump 14 is disposed on the pipeline, and a float switch 15 is disposed on the outlet pipe of the solar collector 16. And the venting pipe, the float switch 15 can prevent the collector collector pump 14 from automatically starting when the solar collector 16 leaks a large amount of water, and the bypass is arranged between the water inlet and the water outlet of the collector circulating pump 14 Normally closed valve.
  • the water outlet of the solar collector 16 is in communication with the top of the heat storage constant pressure water tank 2.
  • the heat storage constant pressure water tank 2 is arranged above the valley electric heat storage device 1, and the heat storage constant pressure water tank 2 passes through the heat preservation pipeline and the valve and the valley electric heat storage device 1, the solar heat collector 16 and the plate heat exchanger secondary heat exchange
  • the device 5 is connected, and the intelligent control device 13 controls the water outlet temperature of the heat storage constant pressure water tank 2 and the heat storage amount of the valley heat storage device 1, respectively, and the intelligent heat exchanger 13 controls the plate heat exchanger secondary heat exchange device 5 to the user heating system. Supply of heat.
  • Collector circulation pump 14 and solar collector 16 According to the actual arrangement of the user's heating system, the amount of solar energy collected during the day is transferred to the heat storage constant pressure water tank 2 as heating energy for heating.
  • the intelligent control device 13 is respectively connected to the heat storage constant pressure water tank 2, the valley electric heat storage device 1, the plate heat exchanger secondary heat exchange device 5, and the intelligent control device 13 controls the valley electric heat storage device according to the user heating system demand and the climate change. 1.
  • the operation of the solar collector 16 delivers thermal energy to the user's heating system.
  • a secondary circulation pump 4 is arranged on the return pipe III21, and a secondary heat exchange device 5 of the plate heat exchanger is arranged on the pipeline connecting the user heating system and the valley electric heat storage device 1, which serves as a function of isolating the heat network and the user.
  • the plate heat exchanger secondary heat exchange device 5 is connected to the outlet pipe of the primary circulation pump 3 and the secondary circulation pump 4 through a pipeline.
  • An outlet pipe I17 is disposed at an upper portion of the side surface of the heat storage constant pressure water tank 2, and the outlet pipe I17 is connected to the plate heat exchanger secondary heat exchange device 5 through a pipeline, and a circulation pump 3 is disposed on the pipeline to make the outlet pipe I17 The hot water enters the plate heat exchanger secondary heat exchange device 5.
  • a water outlet pipe II18 is disposed at a lower portion of the side of the heat storage constant pressure water tank 2, and a water spray pump 9 is disposed on the water outlet pipe II18.
  • the return pipe II20 of the user heating system is connected with the return pipe III21, the return pipe III21 is connected with the secondary side water inlet of the plate heat exchanger secondary heat exchange device 5, and the secondary circulation pump 4 provided on the return pipe III21 is user heat.
  • the water system provides the circulating power, and the secondary side water outlet of the plate heat exchanger secondary heat exchange device 5 is connected to the water supply pipe of the user heating system through the pipeline.
  • An expansion water tank 8 is disposed in the user heating system, a float water supply device is disposed on the expansion water tank 8, and an automatic exhaust valve 11 is disposed at a high point of the water supply line of the user heating system.
  • the bypass pipe of the outlet pipe II18 and the return pipe V12 merges with the return pipe IV22, and a steam recovery device 10 is disposed at the top of the return pipe IV22 and the top of the heat storage constant pressure water tank 2 to condense the steam in the heat storage constant pressure water tank 2 into Hot water, easy to use.
  • An electric flow regulating valve 7 and an electric shut-off valve 6 are provided in a line connecting the return pipe V12 and the valley electric heat storage device 1.
  • the electric shut-off valve 6 can be used to stop the supply of water to the heat accumulator 1 according to the heating demand, thereby achieving intermittent heating.
  • the opening and closing and opening degree of the electric flow regulating valve 7 can be used to control the flow rate of the return water entering the valley electric heat storage device 1 and adjust the temperature of the heat storage constant pressure water tank 2.
  • the water outlet of the valley electric heat storage device 1 is in communication with the upper portion of the heat storage constant pressure water tank 2.
  • the electric flow regulating valve 7 When the electric flow regulating valve 7 is fully opened, most of the return water enters the valley electric heat storage device 1 for heating, and the heated water and the generated steam enter the upper portion of the heat storage constant pressure water tank 2 through the return water pipe I19.
  • the electric flow regulating valve 7 and the heat storage constant pressure water tank 2 constitute a constant temperature adjusting system, and when the heat required by the user heating system changes, the heating capacity of the valley electric heat storage device 1 can be adjusted in time to make the user heating system The heating system runs smoothly.
  • a static pressure line (constant pressure point) is arranged in the heat storage constant pressure water tank 2, and an overflow water sealing device is arranged at a horizontal position of the upper side of the heat storage constant pressure water tank 2 and the static pressure line, and the water surface in the heat storage constant pressure water tank 2 exceeds
  • the heat storage constant pressure water tank 2 is provided with a water supply pipe, the water supply is desalted water, the heat storage constant pressure water tank 2 is provided with a float ball valve, and the floating ball valve is connected with the cut-off valve on the water supply pipe.
  • the valley electric heat storage device 1 is usually arranged in the bottom floor or the basement of the building, and the valley electric heat storage device 1 is a modular structure that can change the heat storage capacity as needed, and the valley electric heat storage device 1 can use different according to the heat storage demand. Specifications of the thermal storage module group, providing different heat storage capacity.
  • the valley electric heat storage device 1 is provided with a metal frame structure and a metal casing 103.
  • the metal casing 103 is provided with an energy storage material 102 (metal oxide or phase change material), and a certain number of thermally conductive serpentine tubes 101 are arranged in the energy storage material 102.
  • the valley electric heating unit 104; the heat medium (e.g., water) in the heat conducting coil 101 is heated by the heat supplied from the energy storage material.
  • the heat conducting serpentine tube 101 is at least one set of heat conducting coil heat exchangers, and the heat conduction area of the valley electric heat storage device 1 can be adjusted by changing the number of the heat conducting coils 101 used.
  • the intelligent control device 13 respectively sets a temperature sensor on the water outlet pipe I17 of the heat storage constant pressure water tank 2 and the valley electric heating energy storage device 1, and the intelligent control device 13 respectively controls the valley electric heating component according to the temperature signal of the temperature sensor. 104. Opening and closing and opening degree of the primary circulation pump 3 and the electric flow regulating valve 7.
  • the solar energy received by the solar heat collector 16 is used to heat the water in the heat storage constant pressure water tank 2, and the valley electric heat storage device 1 stores the heat converted by the valley electricity during the valley electricity period, and also heats up the storage.
  • the hot water in the hot constant pressure water tank 2, and the other time period is controlled by the intelligent control device 13 to supply heat to the heat storage constant pressure water tank 2, and maintain the water supply temperature of the heating system, together with the solar heat collector 16.
  • the thermal energy produced by the combined light and valley electric heating energy storage heating device described above is passed through the heat preservation pipeline and the heating equipment of the user heating system according to the actual situation of the user's heating system (
  • the radiator or heat exchanger is connected, and the circulating power of the heating system is provided by a circulating water pump (primary circulating pump 3, secondary circulating pump 4, collector circulating pump 14, etc.).
  • the secondary heat exchange heating system of low valley electric heating energy storage combines the use of solar energy and low valley electricity, that is, the solar collector 16 and the valley electric heat storage device 1 are combined and used, and the intelligent control device 13 is used for the trough A high-tech regenerative heating system that manages electric heating storage.
  • the system can adjust the heat storage and heat supply according to the change of outdoor air temperature during the heating period and the needs of the user heating system.
  • the present embodiment is a secondary heat exchange heating system with low valley electric heating energy storage, which mainly includes: a valley electric heat storage device 1 and a heat storage constant pressure water tank 2 . (closed), intelligent control device 13, plate heat exchanger secondary heat exchanger 5, etc., the specific structure is as follows:
  • the heat storage constant pressure water tank 2 is arranged above the valley electric heat storage device 1, and the heat storage constant pressure water tank 2 is connected with the valley electric heat storage device 1 and the plate heat exchanger secondary heat exchange device 5 through the heat preservation pipe and the valve, and is intelligently controlled.
  • the device 13 controls the water discharge temperature of the heat storage constant pressure water tank 2 and the heat storage amount of the valley electric heat storage device 1, respectively, and the intelligent heat exchanger device 5 controls the plate heat exchanger secondary heat exchange device 5 to supply heat energy to the user heating system.
  • the intelligent control device 13 and the heat storage constant pressure water tank 2, the valley electric heat storage device 1, the board The heat exchanger secondary heat exchange device 5 is connected, and the intelligent control device 13 controls the operation of the valley electric heating energy storage secondary heat exchange heating system according to the user heating system demand and the climate change, and transmits the heat energy to the user heating system.
  • a secondary circulation pump 4 is arranged on the return pipe III21, and a secondary heat exchange device 5 of the plate heat exchanger is arranged on the pipeline connecting the user heating system and the valley electric heat storage device 1, which serves as a function of isolating the heat network and the user.
  • the plate heat exchanger secondary heat exchange device 5 is connected to the outlet pipe of the primary circulation pump 3 and the secondary circulation pump 4 through a pipeline.
  • An outlet pipe I17 is disposed at an upper portion of the side surface of the heat storage constant pressure water tank 2, and the outlet pipe I17 is connected to the plate heat exchanger secondary heat exchange device 5 through a pipeline, and a circulation pump 3 is disposed on the pipeline to make the outlet pipe I17 The hot water enters the plate heat exchanger secondary heat exchange device 5.
  • a water outlet pipe II18 is disposed at a lower portion of the side of the heat storage constant pressure water tank 2, and a water spray pump 9 is disposed on the water outlet pipe II18.
  • the return pipe II20 of the user heating system is connected with the return pipe III21, the return pipe III21 is connected with the secondary side water inlet of the plate heat exchanger secondary heat exchange device 5, and the secondary circulation pump 4 is provided on the return pipe III21 as the user hot water system.
  • the circulating power is provided, and the secondary side water outlet of the plate heat exchanger secondary heat exchange device 5 is connected to the water supply pipe of the user heating system through the pipeline.
  • An expansion water tank 8 is disposed in the user heating system, a float water supply device is disposed on the expansion water tank 8, and an automatic exhaust valve 11 is disposed at a high point of the water supply line of the user heating system.
  • the bypass pipe of the outlet pipe II18 and the return pipe V12 merges with the return pipe IV22, and a steam recovery device 10 is disposed at the top of the return pipe IV22 and the top of the heat storage constant pressure water tank 2 to condense the steam in the heat storage constant pressure water tank 2 into Hot water, easy to use.
  • An electric flow regulating valve 7 and an electric shut-off valve 6 are provided in a line connecting the return pipe V12 and the valley electric heat storage device 1.
  • the electric shut-off valve 6 can be used to stop the supply of water to the heat accumulator 1 according to the heating demand, thereby achieving intermittent heating.
  • the opening and closing and opening degree of the electric flow regulating valve 7 can be used to control the flow rate of the return water entering the valley electric heat storage device 1 and adjust the temperature of the heat storage constant pressure water tank 2.
  • the water outlet of the valley electric heat storage device 1 is in communication with the upper portion of the heat storage constant pressure water tank 2.
  • the electric flow regulating valve 7 When the electric flow regulating valve 7 is fully opened, most of the return water enters the valley electric heat storage device 1 for heating, and the heated water and the generated steam enter the upper portion of the heat storage constant pressure water tank 2 through the return water pipe I19.
  • the electric flow regulating valve 7 and the heat storage constant pressure water tank 2 constitute a constant temperature adjusting system, and when the heat required by the user heating system changes, the heating capacity of the valley electric heat storage device 1 can be adjusted in time to make the user heating system The heating system runs smoothly.
  • a static pressure line (constant pressure point) is arranged in the heat storage constant pressure water tank 2, and an overflow water sealing device is arranged at a horizontal position of the upper side of the heat storage constant pressure water tank 2 and the static pressure line, and the water surface in the heat storage constant pressure water tank 2 exceeds
  • the heat storage constant pressure water tank 2 is provided with a water supply pipe, the water supply is desalted water, the heat storage constant pressure water tank 2 is provided with a float ball valve, and the floating ball valve is connected with the cut-off valve on the water supply pipe.
  • the valley electric heat storage device 1 is usually arranged in the bottom floor or the basement of the building, and the valley electric heat storage device 1 can be as needed.
  • the modular structure that changes the heat storage capacity, the valley electric heat storage device 1 can use different types of heat storage module groups according to the heat storage demand, and provide different heat storage capacities.
  • the valley electric heat storage device 1 is provided with a metal frame structure and a metal casing 103.
  • the metal casing 103 is provided with an energy storage material 102 (metal oxide or phase change material), and a certain number of thermally conductive serpentine tubes 101 are arranged in the energy storage material 102.
  • the valley electric heating unit 104; the heat medium (e.g., water) in the heat conducting coil 101 is heated by the heat supplied from the energy storage material.
  • the heat conducting serpentine tube 101 is at least one set of heat conducting coil heat exchangers, and the heat conduction area of the valley electric heat storage device 1 can be adjusted by changing the number of the heat conducting coils 101 used.
  • the intelligent control device 13 respectively sets a temperature sensor on the water outlet pipe I17 of the heat storage constant pressure water tank 2 and the valley electric heating energy storage device 1, and the intelligent control device 13 respectively controls the valley electric heating component according to the temperature signal of the temperature sensor. 104. Opening and closing and opening degree of the primary circulation pump 3 and the electric flow regulating valve 7.
  • the valley electric heat storage device 1 stores the heat converted from the valley electricity during the valley electricity period, and also heats the hot water in the heat storage constant pressure water tank 2, and the other time period is controlled by the intelligent control device 13 to control the valley electricity storage.
  • the heat device 1 supplies heat to the heat storage constant pressure water tank 2, maintains the water supply temperature of the heating system, and satisfies the heat supply requirement of the user heating system, and the heat energy produced by the valley electric combined heat storage hot water heating device described above,
  • the insulation pipe is connected with the heating equipment (heat radiator or heat exchanger, etc.) of the user heating system.
  • the circulating power of the heating system is circulated by the circulating water pump (primary circulation pump 3, secondary circulation pump 4, etc.) )provide.
  • the secondary heat exchange heating system for low-temperature electric heating and energy storage is a high-tech heat storage heat supply that uses low-valley electricity, that is, energy storage using the valley electric heat storage device 1 and intelligent management device 13 for low-valley electric heating energy storage. system.
  • the system can adjust the heat storage and heat supply according to the change of outdoor air temperature during the heating period and the needs of the user heating system.

Abstract

一种具有低谷电加热蓄能的二次换热供热系统，包括：谷电蓄热装置（1）、蓄热恒压水箱（2）、板式换热器二次换热装置（5）、智能控制装置（13），蓄热恒压水箱（2）布置在谷电蓄热装置（1）的上方，蓄热恒压水箱（2）与谷电蓄热装置（1）和板式换热器二次换热装置（5）连接，智能控制装置（13）分别控制蓄热恒压水箱（2）的出水温度、谷电蓄热装置（1）的蓄热量，由智能控制装置（13）控制板式换热器二次换热装置（5）向用户采暖系统供应热能。该系统充分利用夜间谷电时段的低价电能，在满足冬季采暖需求的同时，实现节能环保和降低供热费用的目的。

Description

一种具有低谷电加热蓄能的二次换热供热系统 技术领域
本发明涉及一种具有低谷电加热蓄能的二次换热供热系统，属于能源利用领域。
背景技术
建筑能耗主要包括采暖、空调、热水供应、通风、照明等，其中以采暖和空调能耗较大，其次为热水供应。太阳能为可再生能源，太阳能集热器具有无污染、节能、环保、安全等显著特点。太阳能利用以热水供应为主，较少涉及冬季采暖使用。
随着人类节能环保意识的不断增强，更加充分的利用太阳能，在更多的领域使用太阳能已经成为人们的共识。因此，建筑供暖、空调和热水供应系统的热源选择和配置时，使用太阳能的需求越来越大。但是，在太阳能的应用过程中有一些不足，经常受到气候和昼夜条件的限制，影响到用户采暖系统的使用。为了克服太阳能使用时的条件限制，结合国家制定的低谷电优惠政策，应该考虑将太阳能和低谷电的使用结合起来，更好的发挥太阳能节能、环保的优势，在保证用户采暖系统需求的前提下，降低供热成本。
发明内容
本发明的目的在于提供一种低谷电加热蓄能的二次换热供热系统，以达到节能环保且使用成本低，能源利用合理、使用管理方便。
本发明的技术方案是：
一种具有低谷电加热蓄能的二次换热供热系统，该系统包括：谷电蓄热装置、蓄热恒压水箱、板式换热器二次换热装置、智能控制装置，具体结构如下：
蓄热恒压水箱布置在谷电蓄热装置的上方，蓄热恒压水箱通过保温管道和阀门与谷电蓄热装置和板式换热器二次换热装置与用户的供热系统连接，智能控制装置分别控制蓄热恒压水箱的出水温度、谷电蓄热装置的蓄热量，由智能控制装置控制板式换热器二次换热装置向用户采暖系统供应热能；
谷电蓄热装置的出水口与回水管Ⅰ的一端连通，回水管Ⅰ的另一端，接至蓄热恒压水箱上部，蓄热恒压水箱分别与出水管Ⅰ和出水管Ⅱ连通，出水管Ⅰ通过管路与板式换热器二次换热装置连接，板式换热器二次换热装置通过回水管Ⅴ与谷电蓄热装置的进水口连接，在回水管Ⅴ上设置旁路与回水管Ⅳ汇合后接至蓄热恒压水箱的上部，并在回水管Ⅳ与蓄热恒压水箱的顶部连通处设置蒸汽回收器。
所述的具有低谷电加热蓄能的二次换热供热系统，用户采暖系统的回水管Ⅱ与回水管Ⅲ 连通，回水管Ⅲ与板式换热器二次换热装置的二次侧进水口连接，在回水管Ⅲ上设置二次循环泵为用户热水系统提供循环动力，板式换热器二次换热装置的二次侧出水口通过管路接至用户采暖系统供水管。
所述的具有低谷电加热蓄能的二次换热供热系统，在用户采暖系统与谷电蓄热装置连通的管路上设置板式换热器二次换热装置，在出水管Ⅰ与板式换热器二次换热装置连通的管路上设置一次循环泵，板式换热器二次换热装置通过管路与一次循环泵、二次循环泵的出水管连通。
所述的具有低谷电加热蓄能的二次换热供热系统，在回水管Ⅴ上设置电动截止阀和电动流量调节阀。
所述的具有低谷电加热蓄能的二次换热供热系统，出水管Ⅱ上设置淋水泵。
所述的具有低谷电加热蓄能的二次换热供热系统，在用户采暖系统中设置膨胀水箱，在膨胀水箱上设置浮球补水装置，在用户采暖系统供水管路高点设置自动排气阀。
所述的具有低谷电加热蓄能的二次换热供热系统，蓄热恒压水箱内设置静压线，蓄热恒压水箱侧面上部与所述静压线水平位置设有溢流水封装置；蓄热恒压水箱中设有补水管，补水采用脱盐水，蓄热恒压水箱设置浮球阀，浮球阀与补水管上的截止阀门连接。
所述的具有低谷电加热蓄能的二次换热供热系统，谷电蓄热装置布置在建筑物的底层或地下室内，谷电蓄热装置为根据需要改变蓄热能力的模块式结构，谷电蓄热装置设有金属框架结构和和金属的外壳，金属框架结构内置蓄能材料，在蓄能材料中布置导热蛇形管和谷电加热部件。
所述的具有低谷电加热蓄能的二次换热供热系统，该系统还包括太阳能集热器，太阳能集热器的进水口通过管路与蓄热恒压水箱侧面下部连通，在所述管路上设置集热器循环泵。
所述的具有低谷电加热蓄能的二次换热供热系统，太阳能集热器上出水管路设置浮球开关和放气管，集热器循环泵的进水口和出水口之间设置旁路，所述旁路上设置常闭阀。
本发明的设计思想是：
本发明具有低谷电加热蓄能的二次换热供热系统可以包括蓄热恒压水箱、由蓄能材料(金属氧化物或相变材料)填充的谷电蓄热装置、板式换热器二次换热装置等，其中：蓄热恒压水箱、由蓄能材料(金属氧化物或相变材料)填充的谷电蓄热装置通过保温管道和阀门进行连接，采用智能控制装置对谷电加热时间和供暖温度进行控制，保证提供稳定连续的热能供应。谷电蓄热装置采用金属框架结构和金属的外壳，在蓄热装置外侧敷设耐高温保温材料，降低了谷电蓄热装置的热损失。
本发明的优点及有益效果是：
1、本发明通过谷电蓄热装置、蓄热恒压水箱、板式换热器二次换热装置、智能控制装置及其循环管路的有机结合，充分利用夜间谷电时段的低价电能，在满足人们冬季采暖需求的同时，实现了节能环保和降低供热费用的目的。
2、本发明装置的智能控制装置可以实现无人管理，科学运行，在满足人们供暖需求的同时，减少了采暖系统管理耗费的时间和精力，极大提升和改善的人们生活质量。
附图说明
图1为本发明的一个实施例结构示意图。
图2为本发明的另一实施例结构示意图。
图中，1谷电蓄热装置；2蓄热恒压水箱；3一次循环泵；4二次循环泵；5板式换热器二次换热装置；6电动截止阀；7电动流量调节阀；8膨胀水箱；9淋水泵；10蒸汽回收器；11自动排气阀；12回水管Ⅴ；13智能控制装置；14集热器循环泵；15浮球开关；16太阳能集热器；17出水管Ⅰ；18出水管Ⅱ；19回水管Ⅰ；20回水管Ⅱ；21回水管Ⅲ；22回水管Ⅳ；101导热蛇形管；102蓄能材料；103金属外壳；104谷电加热部件。
具体实施方式
下面，通过实施例和附图对本发明进一步详细阐述。但这些实施例不是对本发明保护范围的限制，所有在本发明技术方案基本思路范围内或本质上等同于本发明技术方案的改变均为本发明的保护范围。
实施例1
如图1所示，本实施例具有低谷电加热蓄能的二次换热供热系统，主要包括：谷电蓄热装置1、蓄热恒压水箱2(闭式)、板式换热器二次换热装置5、太阳能集热器16、智能控制装置13等，具体结构如下：
太阳能集热器16的进水口通过管路与蓄热恒压水箱2侧面下部连通，在所述管路上设置集热器循环泵14，太阳能集热器16上的出水管路上设置浮球开关15和放气管，浮球开关15可以避免太阳能集热器16大量漏水时集热器循环泵14自动启动，集热器循环泵14的进水口和出水口之间设置旁路，所述旁路上设置常闭阀。太阳能集热器16的出水口与蓄热恒压水箱2顶部连通。蓄热恒压水箱2布置在谷电蓄热装置1的上方，蓄热恒压水箱2通过保温管道和阀门与谷电蓄热装置1、太阳能集热器16和板式换热器二次换热装置5连接，智能控制装置13分别控制蓄热恒压水箱2的出水温度、谷电蓄热装置1的蓄热量，由智能控制装置13控制板式换热器二次换热装置5向用户采暖系统供应热能。集热器循环泵14和太阳能集热器 16根据用户采暖系统的现场实际进行布置，收集日间的太阳能量输送到蓄热恒压水箱2作为采暖的热能。智能控制装置13分别与蓄热恒压水箱2、谷电蓄热装置1、板式换热器二次换热装置5连接，智能控制装置13根据用户采暖系统需求和气候变化控制谷电蓄热装置1、太阳能集热器16的运行，向用户采暖系统输送热能。
在回水管Ⅲ21上设置二次循环泵4，在用户采暖系统与谷电蓄热装置1连通的管路上，设置板式换热器二次换热装置5，对热网和用户起到隔离的作用，板式换热器二次换热装置5通过管路与一次循环泵3、二次循环泵4的出水管连通。蓄热恒压水箱2的侧面上部设置出水管Ⅰ17，出水管Ⅰ17通过管路与板式换热器二次换热装置5连接，在所述管路上设置一次循环泵3，使出水管Ⅰ17中的热水进入板式换热器二次换热装置5。蓄热恒压水箱2的侧面下部设置出水管Ⅱ18，出水管Ⅱ18上设置淋水泵9。用户采暖系统的回水管Ⅱ20与回水管Ⅲ21连通，回水管Ⅲ21与板式换热器二次换热装置5的二次侧进水口连接，在回水管Ⅲ21上设置的二次循环泵4为用户热水系统提供循环动力，板式换热器二次换热装置5的二次侧出水口通过管路接至用户采暖系统供水管。在用户采暖系统中设置膨胀水箱8，在膨胀水箱8上设置浮球补水装置，在用户采暖系统供水管路高点设置自动排气阀11。出水管Ⅱ18、回水管Ⅴ12的旁路管汇合于回水管Ⅳ22，并在回水管Ⅳ22与蓄热恒压水箱2的顶部连通处设置蒸汽回收器10将蓄热恒压水箱2中的蒸汽冷凝成热水，便于使用。
在回水管Ⅴ12与谷电蓄热装置1连通的管路上，设置电动流量调节阀7和电动截止阀6，根据供热需求可以使用电动截止阀6停止向蓄热装置1供水，实现间断供热。所述电动流量调节阀7的启闭和开度大小，可以用来控制进入谷电蓄热装置1的回水的流量，调节蓄热恒压水箱2的温度。谷电蓄热装置1的出水口与蓄热恒压水箱2上部连通。当所述电动流量调节阀7关闭时，回水全部直接经回水管Ⅳ22进入蓄热恒压水箱2的顶部。当所述电动流量调节阀7完全开启时，回水大部分进入谷电蓄热装置1进行加热，被加热的水和产生的蒸汽通过回水管Ⅰ19进入蓄热恒压水箱2的上部。由所述电动流量调节阀7和蓄热恒压水箱2组成恒温调节系统，当用户采暖系统需要的热量发生变化时，能够及时调整谷电蓄热装置1的供热能力，使用户采暖系统的供热系统平稳运行。
蓄热恒压水箱2内设置静压线(恒压点)，蓄热恒压水箱2侧面上部与所述静压线水平位置设有溢流水封装置，在蓄热恒压水箱2内水面超过静压线时，通过溢流水封装置排放多余的水使水面达到静压线。蓄热恒压水箱2中设有补水管，补水采用脱盐水，蓄热恒压水箱2设置浮球阀，浮球阀与补水管上的截止阀门连接。在蓄热恒压水箱2内水面低于静压线时，浮球阀开启，通过补水管向蓄热恒压水箱2加水，使水面达到静压线，实现蓄热恒压水箱2 的自动恒压功能。
谷电蓄热装置1通常布置在建筑物的底层或地下室内，谷电蓄热装置1为可以根据需要改变蓄热能力的模块式结构，谷电蓄热装置1可以根据蓄热需求，使用不同规格的蓄热模块组，提供不同的蓄热能力。谷电蓄热装置1设有金属框架结构和金属外壳103，金属外壳103内置蓄能材料102(金属氧化物或相变材料)，在蓄能材料102中布置一定数量的导热蛇形管101和谷电加热部件104；导热蛇形管101中供热介质(如：水)由蓄能材料提供的热量升温。导热蛇形管101为至少一组，组成导热蛇形管换热装置，可以通过改变导热蛇形管101的使用数量，来调整谷电蓄热装置1的热传导面积。
智能控制装置13分别在蓄热恒压水箱2的出水管Ⅰ17上、谷电加热蓄能装置1中设置温度传感器，智能控制装置13根据接收所述温度传感器的温度信号，分别控制谷电加热部件104、一次循环泵3和电动流量调节阀7的启闭和开度。
本实施例中，太阳能集热器16接收的太阳能用来加热蓄热恒压水箱2中的水，谷电蓄热装置1在谷电时段蓄储由谷电转换来的热量，同时也加热蓄热恒压水箱2中的热水，其他时段由智能控制装置13控制谷电蓄热装置1向蓄热恒压水箱2供热，保持供热系统的供水温度，与太阳能集热器16一起共同满足用户采暖系统供热的需求，以上所述的光、谷电组合式加热蓄能热水供热装置生产的热能，根据用户采暖系统的实际情况通过保温管道与用户采暖系统的供热设备(散热器或换热器等)连接，供热系统的循环动力由循环水泵(一次循环泵3、二次循环泵4、集热器循环泵14等)提供。
低谷电加热蓄能的二次换热供热系统是将太阳能和低谷电的使用有机结合起来，即将太阳能集热器16和谷电蓄热装置1结合起来使用，同时采用智能控制装置13对低谷电加热蓄能进行管理的高科技蓄热供热系统。该系统可以根据采暖期室外气温的变化及用户采暖系统的需要调整蓄热和供热量。
实施例2
如图2所示，与实施例1不同之处在于，本实施例为具有低谷电加热蓄能的二次换热供热系统，主要包括：谷电蓄热装置1、蓄热恒压水箱2(闭式)、智能控制装置13、板式换热器二次换热装置5等，具体结构如下：
蓄热恒压水箱2布置在谷电蓄热装置1的上方，蓄热恒压水箱2通过保温管道和阀门与谷电蓄热装置1和板式换热器二次换热装置5连接，智能控制装置13分别控制蓄热恒压水箱2的出水温度、谷电蓄热装置1的蓄热量，由智能控制装置13控制板式换热器二次换热装置5向用户采暖系统供应热能。智能控制装置13分别与蓄热恒压水箱2、谷电蓄热装置1、板 式换热器二次换热装置5连接，智能控制装置13根据用户采暖系统需求和气候变化控制谷电加热蓄能二次换热供热系统的运行，向用户采暖系统输送热能。
在回水管Ⅲ21上设置二次循环泵4，在用户采暖系统与谷电蓄热装置1连通的管路上，设置板式换热器二次换热装置5，对热网和用户起到隔离的作用，板式换热器二次换热装置5通过管路与一次循环泵3、二次循环泵4的出水管连通。蓄热恒压水箱2的侧面上部设置出水管Ⅰ17，出水管Ⅰ17通过管路与板式换热器二次换热装置5连接，在所述管路上设置一次循环泵3，使出水管Ⅰ17中的热水进入板式换热器二次换热装置5。蓄热恒压水箱2的侧面下部设置出水管Ⅱ18，出水管Ⅱ18上设置淋水泵9。用户采暖系统的回水管Ⅱ20与回水管Ⅲ21连通，回水管Ⅲ21与板式换热器二次换热装置5二次侧进水口连接，在回水管Ⅲ21上设置二次循环泵4为用户热水系统提供循环动力，板式换热器二次换热装置5二次侧出水口通过管路接至用户采暖系统供水管。在用户采暖系统中设置膨胀水箱8，在膨胀水箱8上设置浮球补水装置，在用户采暖系统供水管路高点设置自动排气阀11。出水管Ⅱ18、回水管Ⅴ12的旁路管汇合于回水管Ⅳ22，并在回水管Ⅳ22与蓄热恒压水箱2的顶部连通处设置蒸汽回收器10将蓄热恒压水箱2中的蒸汽冷凝成热水，便于使用。
在回水管Ⅴ12与谷电蓄热装置1连通的管路上，设置电动流量调节阀7和电动截止阀6，根据供热需求可以使用电动截止阀6停止向蓄热装置1供水，实现间断供热。所述电动流量调节阀7的启闭和开度大小，可以用来控制进入谷电蓄热装置1的回水的流量，调节蓄热恒压水箱2的温度。谷电蓄热装置1的出水口与蓄热恒压水箱2上部连通。当所述电动流量调节阀7关闭时，回水全部直接经回水管Ⅳ22进入蓄热恒压水箱2的顶部。当所述电动流量调节阀7完全开启时，回水大部分进入谷电蓄热装置1进行加热，被加热的水和产生的蒸汽通过回水管Ⅰ19进入蓄热恒压水箱2的上部。由所述电动流量调节阀7和蓄热恒压水箱2组成恒温调节系统，当用户采暖系统需要的热量发生变化时，能够及时调整谷电蓄热装置1的供热能力，使用户采暖系统的供热系统平稳运行。
蓄热恒压水箱2内设置静压线(恒压点)，蓄热恒压水箱2侧面上部与所述静压线水平位置设有溢流水封装置，在蓄热恒压水箱2内水面超过静压线时，通过溢流水封装置排放多余的水使水面达到静压线。蓄热恒压水箱2中设有补水管，补水采用脱盐水，蓄热恒压水箱2设置浮球阀，浮球阀与补水管上的截止阀门连接。在蓄热恒压水箱2内水面低于静压线时，浮球阀开启，通过补水管向蓄热恒压水箱2加水，使水面达到静压线，实现蓄热恒压水箱2的自动恒压功能。
谷电蓄热装置1通常布置在建筑物的底层或地下室内，谷电蓄热装置1为可以根据需要 改变蓄热能力的模块式结构，谷电蓄热装置1可以根据蓄热需求，使用不同规格的蓄热模块组，提供不同的蓄热能力。谷电蓄热装置1设有金属框架结构和金属外壳103，金属外壳103内置蓄能材料102(金属氧化物或相变材料)，在蓄能材料102中布置一定数量的导热蛇形管101和谷电加热部件104；导热蛇形管101中供热介质(如：水)由蓄能材料提供的热量升温。导热蛇形管101为至少一组，组成导热蛇形管换热装置，可以通过改变导热蛇形管101的使用数量，来调整谷电蓄热装置1的热传导面积。
智能控制装置13分别在蓄热恒压水箱2的出水管Ⅰ17上、谷电加热蓄能装置1中设置温度传感器，智能控制装置13根据接收所述温度传感器的温度信号，分别控制谷电加热部件104、一次循环泵3和电动流量调节阀7的启闭和开度。
本实施例中，谷电蓄热装置1在谷电时段蓄储由谷电转换来的热量，同时也加热蓄热恒压水箱2中的热水，其他时段由智能控制装置13控制谷电蓄热装置1向蓄热恒压水箱2供热，保持供热系统的供水温度，满足用户采暖系统供热的需求，以上所述的谷电组合式加热蓄能热水供热装置生产的热能，根据用户采暖系统的实际情况通过保温管道与用户采暖系统的供热设备(散热器或换热器等)连接，供热系统的循环动力由循环水泵(一次循环泵3、二次循环泵4等)提供。
低谷电加热蓄能的二次换热供热系统是使用低谷电，即利用谷电蓄热装置1蓄能，同时采用智能控制装置13对低谷电加热蓄能进行管理的高科技蓄热供热系统。该系统可以根据采暖期室外气温的变化及用户采暖系统的需要调整蓄热和供热量。

Claims (10)

  1. 一种具有低谷电加热蓄能的二次换热供热系统，其特征在于，该系统包括：谷电蓄热装置、蓄热恒压水箱、板式换热器二次换热装置、智能控制装置，具体结构如下：
    蓄热恒压水箱布置在谷电蓄热装置的上方，蓄热恒压水箱通过保温管道和阀门与谷电蓄热装置和板式换热器二次换热装置与用户的供热系统连接，智能控制装置分别控制蓄热恒压水箱的出水温度、谷电蓄热装置的蓄热量，由智能控制装置控制板式换热器二次换热装置向用户采暖系统供应热能；
    谷电蓄热装置的出水口与回水管Ⅰ的一端连通，回水管Ⅰ的另一端，接至蓄热恒压水箱上部，蓄热恒压水箱分别与出水管Ⅰ和出水管Ⅱ连通，出水管Ⅰ通过管路与板式换热器二次换热装置连接，板式换热器二次换热装置通过回水管Ⅴ与谷电蓄热装置的进水口连接，在回水管Ⅴ上设置旁路与回水管Ⅳ汇合后接至蓄热恒压水箱的上部，并在回水管Ⅳ与蓄热恒压水箱的顶部连通处设置蒸汽回收器。
  2. 按照权利要求1所述的具有低谷电加热蓄能的二次换热供热系统，其特征在于，用户采暖系统的回水管Ⅱ与回水管Ⅲ连通，回水管Ⅲ与板式换热器二次换热装置的二次侧进水口连接，在回水管Ⅲ上设置二次循环泵为用户热水系统提供循环动力，板式换热器二次换热装置的二次侧出水口通过管路接至用户采暖系统供水管。
  3. 按照权利要求2所述的具有低谷电加热蓄能的二次换热供热系统，其特征在于，在用户采暖系统与谷电蓄热装置连通的管路上设置板式换热器二次换热装置，在出水管Ⅰ与板式换热器二次换热装置连通的管路上设置一次循环泵，板式换热器二次换热装置通过管路与一次循环泵、二次循环泵的出水管连通。
  4. 按照权利要求1所述的具有低谷电加热蓄能的二次换热供热系统，其特征在于，在回水管Ⅴ上设置电动截止阀和电动流量调节阀。
  5. 按照权利要求1所述的具有低谷电加热蓄能的二次换热供热系统，其特征在于，出水管Ⅱ上设置淋水泵。
  6. 按照权利要求1所述的具有低谷电加热蓄能的二次换热供热系统，其特征在于，在用户采暖系统中设置膨胀水箱，在膨胀水箱上设置浮球补水装置，在用户采暖系统供水管路高点设置自动排气阀。
  7. 按照权利要求1所述的具有低谷电加热蓄能的二次换热供热系统，其特征在于，蓄热恒压水箱内设置静压线，蓄热恒压水箱侧面上部与所述静压线水平位置设有溢流水封装置；蓄热恒压水箱中设有补水管，补水采用脱盐水，蓄热恒压水箱设置浮球阀，浮球阀与补水管 上的截止阀门连接。
  8. 按照权利要求1所述的具有低谷电加热蓄能的二次换热供热系统，其特征在于，谷电蓄热装置布置在建筑物的底层或地下室内，谷电蓄热装置为根据需要改变蓄热能力的模块式结构，谷电蓄热装置设有金属框架结构和和金属的外壳，金属框架结构内置蓄能材料，在蓄能材料中布置导热蛇形管和谷电加热部件。
  9. 按照权利要求1所述的具有低谷电加热蓄能的二次换热供热系统，其特征在于，该系统还包括太阳能集热器，太阳能集热器的进水口通过管路与蓄热恒压水箱侧面下部连通，在所述管路上设置集热器循环泵。
  10. 按照权利要求9所述的具有低谷电加热蓄能的二次换热供热系统，其特征在于，太阳能集热器上出水管路设置浮球开关和放气管，集热器循环泵的进水口和出水口之间设置旁路，所述旁路上设置常闭阀。
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