WO2017016224A1 - 一种谷电相变储热式采暖热水系统 - Google Patents

一种谷电相变储热式采暖热水系统 Download PDF

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WO2017016224A1
WO2017016224A1 PCT/CN2016/075712 CN2016075712W WO2017016224A1 WO 2017016224 A1 WO2017016224 A1 WO 2017016224A1 CN 2016075712 W CN2016075712 W CN 2016075712W WO 2017016224 A1 WO2017016224 A1 WO 2017016224A1
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phase change
heating
hot water
heat
heat storage
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PCT/CN2016/075712
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French (fr)
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孙利
汤雪飞
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江苏启能新能源材料有限公司
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00Central heating systems using heat accumulated in storage masses

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  • the utility model belongs to the technical field of a heating and water supply and drainage system, and relates to a heating and hot water system, in particular to a valley electric phase change heat storage heating and heating water system.
  • heating and hot water systems are mainly divided into natural circulation heating and hot water systems and mechanical circulating heating and hot water systems.
  • the working principle of the natural circulation heating and hot water system is: before the system is running, the whole system should be filled with cold water.
  • the water is heated in the boiler, the density becomes smaller, and the hot water rises along the water supply pipe into the radiator.
  • the hot water in the radiator releases heat, the temperature is lowered, the density becomes large, and it flows back to the boiler along the return water pipe.
  • the natural circulation heating and hot water system is simple and easy to operate, due to the limited pressure of the system, the flow rate of the pipeline is too small, resulting in a large diameter, resulting in a high initial investment.
  • the working principle of the mechanical circulation heating and hot water system is: using the pump to force circulation, the popular resistance of the water flow in the entire annular pipeline is overcome by the power provided by the water pump, and the head of the water pump is mainly determined by the flow resistance. Due to the installation of the circulating water pump, the pressure generated by the water pump is very large, so the heating range can be expanded, not only for single building heating, but also for multiple buildings, district heating, and wide use. However, the electricity and maintenance costs of the system are higher than those of natural circulation heating and hot water systems.
  • the existing common heating and hot water system mostly uses boilers or heat pumps, but the operation cost of the boiler is high, and environmental pollution is caused, and the initial investment of the heat pump is high. In response to the above problems, many improvements have been made in the design of heating and hot water systems.
  • the Chinese Utility Model Patent No. 201210308713.5 discloses a heating hot water and sanitary hot water heat pump system, including a heat pump main unit and a water tank; one end of the evaporator is connected to the condenser through an expansion valve, and the other end is connected to a compressor, and is compressed.
  • the machine is connected with a condenser.
  • One end of the condenser is connected to the hot water storage tank through a heating circulating water pump, and the other end is directly connected to the hot water storage tank; the sanitary hot water heating coil is arranged in the hot water storage tank, and the sanitary hot water is heated.
  • One end of the coil is a sanitary hot water inlet, and the other end is a sanitary hot water outlet; a hot water storage tank is provided with a heating hot water outlet, and the heating hot water outlet is connected to the heating air. And connect to the hot water storage tank through the heating circulating water pump.
  • the Chinese utility model patent No. 201210494454.X discloses a heat pipe heating system using solar energy, including: a solar heat collecting plate passing through an upper circulation pipe and a lower circulation The tube is connected to the hot water storage tank, and the hot water storage tank has a phase change heat storage block built therein, and the water pump is connected to the coil in the hot water storage tank and the coil in the heat preservation heat exchange tank through the heat preservation circulating hot water pipe, and the heat pipe is inserted into the heat preservation end at one end. In the heat exchange box, the other end has ribs.
  • the purpose of the utility model is to overcome the defects of the prior art mentioned above and provide a system with high thermal efficiency, simple structure and simple installation, and can effectively solve the problem of high operating cost and green environmental protection. .
  • a valley electric phase change thermal storage heating and hot water system the system comprises a heat source electric heater, a phase change heat storage device, a primary water pump, a hot water plate exchange, a heating plate exchange, and an end device exchanged with the heating plate.
  • the medium outlet of the phase change heat storage device is sequentially connected with the primary water pump, the heat source electric heater, the hot water plate and the heating plate through the pipeline, and is returned to the medium inlet connected to the phase change heat storage device through the heating plate.
  • a heating and hot water circulation circuit is formed, and a secondary heating water pump is further arranged between the heating plate and the end device.
  • a liquid injector for injecting a circulating medium is further disposed between the primary water pump and the phase change heat storage device.
  • An expansion water tank is further disposed between the liquid filling device and the primary water pump.
  • the circulating medium includes one of water, antifreeze, heat transfer oil or superconducting liquid.
  • An expansion tank is disposed between the primary water pump and the heat source electric heater.
  • the heat source electric heater can be selected to electrically heat the steel cup.
  • the heat source electric heater uses the valley electricity to heat the circulating medium at night, and replaces the hot water plate with the heating plate through the heating hot water circulation circuit, and at the same time, a part of the heat is stored in the phase change heat storage device.
  • the heat source electric heater stops working.
  • the heat stored in the phase change heat storage device is transferred to the hot water plate through the primary water pump, the heating plate is exchanged for heat, and after the heat exchange is cooled.
  • the circulation heating is continued.
  • the phase change heat storage device utilizes the latent heat of the phase change material to store heat.
  • the heat is stored in the phase change heat storage device, and the phase change material absorbs heat from the solid state to the liquid state; at the peak electricity price, the phase change heat storage device will Heat Delivered to the end device, the phase change material exotherms and changes from a liquid to a solid.
  • the expansion tank is used for the smaller system for the expansion and constant pressure of the system circulating medium, and for the larger system, the constant pressure expansion tank can be set at a high point.
  • the utility model separates the domestic hot water demand and the heating demand by two different plates, and the two plates are independently operated on the secondary side, and the primary side shares the heat source; the primary water pump transfers the heat to the heating plate on the primary side or The hot water plate is exchanged; the secondary heating water pump transfers heat to the end equipment on the secondary side of the heating, and the secondary side power of the hot water plate is mainly provided by the tap water pressure.
  • the utility model can realize the combined working condition of heating while heating at the primary side at night, and the heat source electric heater is not energized during the daytime operation, and is only used as a pipeline, and uses the stored heat of the phase change heat storage device to supply heat to the end. It can provide heating source or domestic hot water stably and continuously, and can be used for building heating and domestic hot water demand by connecting terminal heat-dissipating equipment and domestic hot water pipeline.
  • the utility model has the advantages of simple structure, convenient manufacture, high heat storage capacity of the system, small size and small size, and the system can stably and continuously provide the heating and hot water heat source due to the stable phase change process of the phase change material.
  • valley electricity as the system heat source, in line with the national energy-saving emission reduction policy guidance, zero pollution to the environment, zero emissions, safe and simple operation, saving operating costs.
  • Figure 1 is a schematic view of the structure of the present invention
  • a valley electric phase change thermal storage heating and hot water system the system includes a heat source electric heater 1, a phase change heat storage 2, a primary water pump 3, a hot water plate for 4, a heating plate for 5 And the end device 6 connected to the heating plate for 5, the medium outlet of the phase change heat storage 2 is sequentially connected with the primary water pump 3 and the heat source through the pipeline Electric heater 1, hot water plate 4 and heating plate for 5 connection, and through the heating plate for 5 return to the medium inlet connected to the phase change heat storage 2, to form a heating hot water circulation loop, heating plate for 5 and end equipment There is also a secondary heating pump 7 between 6.
  • the first water pump 3 and the phase change heat storage device 2 are further provided with a liquid filling device 8 for injecting a circulating medium, and an expansion water tank 9 is further disposed between the liquid filling device 8 and the primary water pump 3; the primary water pump 3 and the heat source An expansion tank 10 is provided between the electric heaters 1.
  • the circulating medium includes one of water, antifreeze, heat transfer oil or superconducting liquid; the heat source electric heater 1 can be selected to electrically heat the steel cup.
  • the system is divided by two different plates to separate the domestic hot water demand and the heating demand.
  • the two plates are operated independently on the secondary side, and the primary side shares the heat source; the primary water pump 3 transfers the heat to the heating plate on the primary side for 5 or The hot water plate is changed to 4; the secondary heating water pump 7 delivers heat to the end device 6 on the secondary side of the heating, and the secondary side power of the hot water plate is mainly provided by the tap water pressure.
  • the heat source electric heater 1 uses the valley electricity to heat the circulating medium at night, and replaces the hot water plate with the heating plate through the heating hot water circulation circuit, and the heating plate exchanges 5 heat, and at the same time, a part of the heat is stored in the phase change storage.
  • the heat exchanger 2 during the daytime peaking, the heat source electric heater 1 stops working.
  • the heat stored in the phase change heat storage device 2 is transferred to the hot water plate through the primary water pump 3, and the heating plate is exchanged for 5
  • the heat is supplied, and the circulating medium after the heat exchange cooling is returned to the phase change heat storage device 2 to be reheated, and the circulation heating is continued.
  • the phase change heat storage device 2 uses the latent heat of the phase change material to store heat. When the low valley electricity price is stored, the heat is stored in the phase change heat storage device 2.
  • the phase change material absorbs heat and changes from a solid state to a liquid state; at the peak electricity price, the phase change heat storage
  • the device 2 delivers heat to the end device 6, and the phase change material exotherms from a liquid to a solid.
  • the expansion tank 10 is used for the smaller system for the expansion and constant pressure of the system circulating medium, and for the larger system, the constant pressure expansion water tank 9 can be set at a high point.
  • the system uses 80MJ phase change heat storage 2, electric heater power 3kw, and the phase change heat storage 2 can be filled with heat through 8 hours of low valley electricity at night.
  • the trough price is 0.3 yuan/kwh
  • the peak electricity price is 1 yuan/kwh
  • the gas price is 4.2 yuan/m 3
  • the gas calorific value is 8400 kcal/m 3
  • the efficiency is 90%.

Abstract

一种谷电相变储热式采暖热水系统,该系统包括热源电加热器(1)、相变储热器(2)、一次水泵(3)、热水板换(4)、采暖板换(5)、以及与采暖板换(5)连接的末端设备(6),相变储热器(2)的介质出口通过管路依次与一次水泵(3)、热源电加热器(1)、热水板换(4)及采暖板换(5)连接,并通过采暖板换(5)的回流口返回连接至相变储热器(2),构成采暖热水循环回路,采暖板换(5)与末端设备(6)之间还设有二次采暖水泵(7)。

Description

一种谷电相变储热式采暖热水系统 技术领域
本实用新型属于暖通给排水系统技术领域,涉及一种采暖热水系统,尤其是涉及一种谷电相变储热式采暖热水系统。
背景技术
目前,采暖热水系统主要分为自然循环采暖热水系统及机械循环采暖热水系统。其中,自然循环采暖热水系统的工作原理为:在系统运行前,整个系统要充满冷水,系统工作时,水在锅炉中加热,密度变小,热水沿着供水管道上升流入散热器,在散热器内热水释放热量,温度降低,密度变大,再沿回水管道流回锅炉。自然循环采暖热水系统虽然装置简单,操作方便,但由于系统作用压力有限,管路流速偏小,致使管径偏大,造成初次投资较高。而机械循环采暖热水系统的工作原理为:利用水泵强制循环,水流在整个环状管路中流行的阻力靠水泵提供的动力来克服,水泵的扬程大小主要由流动阻力来确定。由于设置了循环水泵,水泵所产生的作用压力很大,因而供暖范围可以扩大,不仅可以单栋建筑供暖,也可以多栋建筑,区域供暖,使用广泛。但该系统运行电费及维修成本较自然循环采暖热水系统要高。
现有的普通采暖热水系统多采用锅炉或热泵,但锅炉运行费用高,且会造成环境污染,而热泵初投资较高。针对上述问题,目前在采暖热水系统设计方面做了许多改进。
例如,申请号为201210308713.5的中国实用新型专利公布了一种采暖热水和卫生热水热泵系统,包括热泵主机与水箱;蒸发器一端通过膨胀阀连接有冷凝器,另一端连接有压缩机,压缩机连接有冷凝器,冷凝器一端通过加热循环水泵连通于所述热水储水箱、另一端直接连通于热水储水箱;卫生热水加热盘管设置于热水储水箱内,卫生热水加热盘管一端为卫生热水进口,另一端为卫生热水出口;热水储水箱内设置有采暖热水出口,采暖热水出口连通于采暖空 间,并通过采暖循环水泵连接回热水储水箱。
也有将太阳能与相变储热结合使用的采暖系统,如申请号为201210494454.X的中国实用新型专利公布了一种利用太阳能的热管采暖系统,包括:太阳能集热板通过上循环管和下循环管与储热水箱相连,储热水箱内置有相变储热块,水泵通过保温循环热水管连接储热水箱中的盘管和保温换热箱中的盘管,热管一端插入保温换热箱中,另一端带有肋片。
实用新型内容
本实用新型的目的就是为了克服上述现有技术存在的缺陷而提供一种系统热效率高、结构和安装简单,能有效解决运行费用高及绿色环保问题的谷电相变储热式采暖热水系统。
本实用新型的目的可以通过以下技术方案来实现:
一种谷电相变储热式采暖热水系统,该系统包括热源电加热器、相变储热器、一次水泵、热水板换、采暖板换以及与采暖板换连接的末端设备,所述的相变储热器的介质出口通过管路依次与一次水泵、热源电加热器、热水板换及采暖板换连接,并通过采暖板换返回连接至相变储热器的介质进口,构成采暖热水循环回路,所述的采暖板换与末端设备之间还设有二次采暖水泵。
所述的一次水泵与相变储热器之间还设有用于注入循环介质的灌液器。
所述的灌液器与一次水泵之间还设有膨胀水箱。
所述的循环介质包括水、防冻液、导热油或超导液中的一种。
所述的一次水泵与热源电加热器之间设有膨胀罐。
所述的热源电加热器可以选择电加热钢杯。
实际使用时,热源电加热器在夜间利用谷电对循环介质加热,并通过采暖热水循环回路对热水板换、采暖板换供热,同时,一部分热量会储存在相变储热器中,而在白天峰电期间,热源电加热器停止工作,此时,储存在相变储热器中的热量通过一次水泵输送至热水板换、采暖板换供热,而经换热冷却后的循环介质返回至相变储热器重新加热后,继续进行循环供热。
相变储热器利用相变材料的潜热储存热量,低谷电价时将热量储存在相变储热器中,相变材料吸热,由固态变为液态;高峰电价时,相变储热器将热量 输送给末端设备,相变材料放热,由液态变为固态。
在膨胀罐及膨胀水箱的选择过程中,对于较小的系统采用膨胀罐,用于系统循环介质的膨胀定压,对于较大的系统可以在高点设置定压膨胀水箱。
本实用新型由两个不同的板换将生活热水需求及采暖需求分隔开,两板换在二次侧独立运行,一次侧共享热源;一次水泵在一次侧将热量输送给采暖板换或热水板换;二次采暖水泵在采暖二次侧将热量输送给末端设备,而热水板换二次侧动力主要靠自来水压力提供。
本实用新型一次侧夜间可以实现边充热边供热的联合工况,在日间工作时,热源电加热器不通电,仅作为管道使用,利用相变储热装置的储存热量向末端供热,能够稳定持续地提供采暖热源或生活热水,通过连接末端散热设备及生活热水管路,用于建筑物的采暖及生活热水需求。
与现有技术相比,本实用新型结构简单、制作方便,且系统储热能力高,外形尺寸小,因相变材料相变过程稳定,所以系统能够稳定持续地提供采暖及热水热源,同时采用谷电作为系统热源,符合国家节能减排的政策导向,对环境零污染,零排放,运行安全简单可靠,节省运行费用。
附图说明
图1为本实用新型结构示意图;
图中标记说明:
1—热源电加热器、2—相变储热器、3—一次水泵、4—热水板换、5—采暖板换、6—末端设备、7—二次采暖水泵、8—灌液器、9—膨胀水箱、10—膨胀罐。
具体实施方式
下面结合附图和具体实施例对本实用新型进行详细说明。
实施例:
如图1所示,一种谷电相变储热式采暖热水系统,该系统包括热源电加热器1、相变储热器2、一次水泵3、热水板换4、采暖板换5以及与采暖板换5连接的末端设备6,相变储热器2的介质出口通过管路依次与一次水泵3、热源 电加热器1、热水板换4及采暖板换5连接,并通过采暖板换5返回连接至相变储热器2的介质进口,构成采暖热水循环回路,采暖板换5与末端设备6之间还设有二次采暖水泵7。
其中,一次水泵3与相变储热器2之间还设有用于注入循环介质的灌液器8,该灌液器8与一次水泵3之间还设有膨胀水箱9;一次水泵3与热源电加热器1之间设有膨胀罐10。
循环介质包括水、防冻液、导热油或超导液中的一种;热源电加热器1可以选择电加热钢杯。
系统由两个不同的板换将生活热水需求及采暖需求分隔开,两板换在二次侧独立运行,一次侧共享热源;一次水泵3在一次侧将热量输送给采暖板换5或热水板换4;二次采暖水泵7在采暖二次侧将热量输送给末端设备6,而热水板换4二次侧动力主要靠自来水压力提供。
实际使用时,热源电加热器1在夜间利用谷电对循环介质加热,并通过采暖热水循环回路对热水板换4、采暖板换5供热,同时,一部分热量会储存在相变储热器2中,而在白天峰电期间,热源电加热器1停止工作,此时,储存在相变储热器2中的热量通过一次水泵3输送至热水板换4、采暖板换5供热,而经换热冷却后的循环介质返回至相变储热器2重新加热后,继续进行循环供热。
相变储热器2利用相变材料的潜热储存热量,低谷电价时将热量储存在相变储热器2中,相变材料吸热,由固态变为液态;高峰电价时,相变储热器2将热量输送给末端设备6,相变材料放热,由液态变为固态。
在膨胀罐10及膨胀水箱9的选择过程中,对于较小的系统采用膨胀罐10,用于系统循环介质的膨胀定压,对于较大的系统可以在高点设置定压膨胀水箱9。
系统使用80MJ的相变储热器2,电加热器功率3kw,在夜间通过8个小时低谷电可将相变储热器2充满热量。
假设一个房间的面积20m2,采暖功率70w/m2,则相变储热器2可满足该房间80/3.6/(20×70/1000)=15.9个小时的供暖。其最大瞬时供暖功率可达到9kw。
假设一个人洗澡所需热水60L,自来水温度15度,热水需求温度45度,则相变储热器2可满足80/(60×(45-15)×4.18/1000)=10.6人,即可满足10~11人洗浴。
假设低谷电价0.3元/kwh,高峰电价1元/kwh,燃气价格4.2元/m3,燃气热值8400大卡/m3,效率90%。
相对普通电热水器的电直供系统,本实施例系统一个循环可节省运行费用=(1-0.3)×80/3.6=15.5元,节省比例达70%;相比较燃气可节省=80/(8400×4.18/1000)/0.9×4.2-0.3×80/3.6=4元,节省比例达37%。
以上所述仅为本实用新型的优选实施例而已,并不用于限制本实用新型,对于本领域的技术人员来说,本实用新型可以有各种更改和变化。凡在本实用新型的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本实用新型的保护范围之内。

Claims (5)

  1. 一种谷电相变储热式采暖热水系统,其特征在于,该系统包括热源电加热器、相变储热器、一次水泵、热水板换、采暖板换以及与采暖板换连接的末端设备,所述的相变储热器的介质出口通过管路依次与一次水泵、热源电加热器、热水板换及采暖板换连接,并通过采暖板换返回连接至相变储热器的介质进口,构成采暖热水循环回路,所述的采暖板换与末端设备之间还设有二次采暖水泵。
  2. 根据权利要求1所述的一种谷电相变储热式采暖热水系统,其特征在于,所述的一次水泵与相变储热器之间还设有用于注入循环介质的灌液器。
  3. 根据权利要求2所述的一种谷电相变储热式采暖热水系统,其特征在于,所述的灌液器与一次水泵之间还设有膨胀水箱。
  4. 根据权利要求2所述的一种谷电相变储热式采暖热水系统,其特征在于,所述的循环介质包括水、防冻液、导热油或超导液中的一种。
  5. 根据权利要求1所述的一种谷电相变储热式采暖热水系统,其特征在于,所述的一次水泵与热源电加热器之间设有膨胀罐。
PCT/CN2016/075712 2015-07-28 2016-03-05 一种谷电相变储热式采暖热水系统 WO2017016224A1 (zh)

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