技术领域technical field
本发明涉及分层式相变蓄冷技术领域，具体涉及一种组合式相变蓄冷装置及采用该蓄冷装置的空调系统。The invention relates to the technical field of layered phase change cold storage, in particular to a combined phase change cold storage device and an air conditioning system using the cold storage device.
背景技术Background technique
随着我国经济高速的发展，人们对居住及办公环境要求越来越高，空调系统能耗在建筑能耗中所占比例越来越大，据相关文献调查研究，目前这一比例已超过40％，发达国家则更多。在这一背景下，特别是夏季12：00-16：00时间段内，空调用电容易导致地区用电高峰的出现，这些用电高峰将对电网造成巨大的压力，如何减轻电网压力保证供电安全，实施电力需求响应是解决问题的一种有效途径。通常电力需求响应持续时间少于2小时，且一年当中响应次数不多，其次数由电网用电尖峰次数决定。2012年国家发改委选定北京、唐山、佛山及苏州4个城市开展需求相应试点项目，拉开了中国电力需求响应的大门，电力需求响应旨在均衡电网负荷，消峰填谷，提高电站和电网的运行效率，保证电网安全稳定运行。With the rapid development of my country's economy, people have higher and higher requirements for living and office environments, and the energy consumption of air-conditioning systems accounts for an increasing proportion of building energy consumption. According to relevant literature research, this proportion has exceeded 40% at present. % and even more in developed countries. In this context, especially during the time period from 12:00 to 16:00 in summer, the power consumption of air conditioners is likely to lead to the emergence of regional power consumption peaks. These power consumption peaks will cause huge pressure on the power grid. How to reduce the pressure on the power grid to ensure power supply Safety, implementing electricity demand response is an effective way to solve the problem. Generally, the duration of electricity demand response is less than 2 hours, and the number of responses in a year is not many, and the number of times is determined by the peak times of power grid consumption. In 2012, the National Development and Reform Commission selected four cities, Beijing, Tangshan, Foshan and Suzhou, to carry out demand-response pilot projects, which opened the door to China’s power demand response. The operating efficiency ensures the safe and stable operation of the power grid.
空调系统蓄冷作为一种有效的电力负荷均衡手段，在夜间用电低谷的时段蓄冷，把所蓄冷量存储起来，在白天用电高峰时段利用蓄冷装置提供所需建筑冷负荷，从而减少，甚至完全停止冷水机组在用电高峰时的用电，达到降峰的目的。在传统蓄冷空调中，冰蓄冷及水蓄冷较为常见，由于冰蓄冷装置体积较小(一般水蓄冷体积是冰蓄冷体积6倍以上)，占地也更少，在一些用地受限的场合，往往采用冰蓄冷系统形式。但冰蓄冷所需的制冷机组蒸发温度较低，其制冷效率也更低，一般制冰工况比常规工况效率降低约35％左右，且冷媒一般需采用一定浓度的特制溶液(如乙二醇溶液)的双工况的冷水机组，这增加了投资的成本。水蓄冷虽然其制冷效率不受此影响，但利用水的显热存储能量，要求装置的体积非常大，其初投资也较大，一般性建筑难以实现。As an effective means of balancing power loads, air-conditioning system cold storage stores cold storage during nighttime periods of low power consumption, stores the cold storage capacity, and uses cold storage devices to provide the required building cooling load during peak power consumption hours during the day, thereby reducing, or even completely Stop the power consumption of the chiller during peak power consumption to achieve the purpose of peak reduction. In traditional cold storage air conditioners, ice storage and water storage are more common. Due to the small volume of ice storage devices (generally, the volume of water storage is more than 6 times the volume of ice storage), it occupies less land. In some occasions where land use is limited, often Adopt the form of ice storage system. However, the evaporation temperature of the refrigeration unit required for ice storage is low, and its refrigeration efficiency is also lower. Generally, the efficiency of ice-making conditions is about 35% lower than that of conventional conditions, and the refrigerant generally needs to use a special solution with a certain concentration (such as B2 Alcohol solution) chillers with dual working conditions, which increases the cost of investment. Although the cooling efficiency of water cold storage is not affected by this, the use of sensible heat of water to store energy requires a very large device and a large initial investment, which is difficult to achieve in general buildings.
过去几十年，相变材料在空调蓄冷方面有较多研究，相变材料分为有机和无机盐两大类。无机盐相变材料虽然有较高的相变潜热，但往复蓄能/释能过程中存在晶液分离的问题，导致相变材料失效。有机相变材料虽然不存在晶液分离的现象，但其存在导热系数较低的问题，难以实现快速的蓄能/释能过程，从而阻碍了其发展。In the past few decades, there have been many studies on phase change materials in air conditioning and cold storage. Phase change materials are divided into two categories: organic and inorganic salts. Although inorganic salt phase change materials have high phase change latent heat, there is a problem of crystal-liquid separation during the reciprocating energy storage/energy release process, which leads to the failure of phase change materials. Although organic phase change materials do not have the phenomenon of crystal-liquid separation, they have the problem of low thermal conductivity, and it is difficult to realize the rapid energy storage/energy release process, thus hindering their development.
发明内容Contents of the invention
本发明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蓄冷/释冷效率高的组合式相变蓄冷装置及采用该蓄冷装置的空调系统。The object of the present invention is to provide a combined phase-change cold storage device with high cold storage/cooling release efficiency and an air conditioning system using the cold storage device in order to overcome the above-mentioned defects in the prior art.
本发明的目的可以通过以下技术方案来实现：一种组合式相变蓄冷装置，其特征在于，所述的蓄冷装置包括设有n块隔板的相变材料储存箱以及储存在相变材料储存箱内的相变材料，所述n块隔板将相变材料储存箱分割成n+1个储存空间，第1储存空间的外侧设有一号水口，第n+1储存空间的外侧设有二号水口，每块隔板的上端或下端设有流水孔道，且所述一号水口、n个流水孔道、二号水口形成上下交错排列的冷水通道。The purpose of the present invention can be achieved through the following technical solutions: a combined phase change cold storage device, characterized in that the cold storage device includes a phase change material storage box with n partition plates and a phase change material storage tank The phase change material in the box, the n partitions divide the phase change material storage box into n+1 storage spaces, the outside of the first storage space is provided with a No. 1 nozzle, and the outside of the n+1 storage space is provided with two No. 1 water outlet, the upper or lower end of each partition is provided with a water flow channel, and the No. 1 water outlet, n water flow channels, and No. 2 water outlet form a vertically staggered cold water channel.
所述的相变材料(12)为正十四烷和十六烷的混合物，所述正十四烷所占的体积比例从第1储存空间到第n+1储存空间逐渐减小。正十四烷的含量越高，相变材料的相变温度越低，利用4种不同相变温度的相变材料组合，相比单一相变材料，增大了相变材料与水之间的传热温差，从而提高效蓄/释冷的效率。The phase change material (12) is a mixture of n-tetradecane and hexadecane, and the volume ratio of n-tetradecane gradually decreases from the first storage space to the n+1 storage space. The higher the content of n-tetradecane, the lower the phase change temperature of the phase change material. The combination of four phase change materials with different phase change temperatures increases the distance between the phase change material and water compared with a single phase change material. Heat transfer temperature difference, thereby improving the efficiency of energy storage/cooling release.
当n＝3时，所述的第1储存空间中正十四烷的体积比例为60～65％。When n=3, the volume ratio of n-tetradecane in the first storage space is 60-65%.
第2储存空间中正十四烷的体积比例为40～45％。The volume ratio of n-tetradecane in the second storage space is 40-45%.
第3储存空间中正十四烷的体积比例为30～35％。The volume ratio of n-tetradecane in the third storage space is 30-35%.
第4储存空间中正十四烷的体积比例为20～25％。The volume ratio of n-tetradecane in the fourth storage space is 20-25%.
采用上述比例的相变材料，四个相变材料的相变温度为5℃～12℃，相变潜热为140KJ/Kg～180KJ/Kg，不同相变材料分层组合提高了蓄冷和释冷过程的传热温差，从而提高了换热效率，实现需求响应事件供热需求。Using the phase change materials in the above proportions, the phase change temperature of the four phase change materials is 5°C to 12°C, and the latent heat of phase change is 140KJ/Kg to 180KJ/Kg. The layered combination of different phase change materials improves the cold storage and cooling process. The heat transfer temperature difference can be improved, thereby improving the heat exchange efficiency and realizing the demand response event heating demand.
一种采用如上所述组合式相变蓄冷装置的空调系统，包括冷水单元、用户需求末端以及用于冷水单元和用户需求末端热交换的换热器，所述冷水单元包括冷水机组和蓄冷装置，所述冷水机组的出水口的依次通过一号电磁阀、冷冻水循环泵和二号电动调节阀与所述换热器的冷水进水口连接，换热器的冷水出水口通过三通阀分别与冷水机组的进水口及相变材料储存箱的二号水口连接，所述相变材料储存箱的进水口通过三通阀分别与位于一号电磁阀和冷冻水循环泵之间的管道及位于冻水循环泵和二号电动调节阀之间的管道连通，并分别在两条管路上设置二号电磁阀和一号电动调节阀。换热器为板式换热器。An air-conditioning system using the combined phase-change cold storage device as described above, including a cold water unit, a user demand terminal, and a heat exchanger for heat exchange between the cold water unit and the user demand end, the cold water unit includes a chiller unit and a cold storage device, The water outlet of the chiller is connected to the cold water inlet of the heat exchanger through the No. 1 solenoid valve, the chilled water circulation pump and the No. 2 electric regulating valve in sequence, and the cold water outlet of the heat exchanger is respectively connected to the cold water outlet through the three-way valve. The water inlet of the unit is connected to the No. 2 water port of the phase change material storage tank, and the water inlet of the phase change material storage tank is respectively connected to the pipeline between the No. 1 solenoid valve and the chilled water circulation pump and the pipeline between the chilled water circulation pump It is connected with the pipeline between the No. 2 electric control valve, and the No. 2 solenoid valve and the No. 1 electric control valve are respectively arranged on the two pipelines. The heat exchanger is a plate heat exchanger.
由于在常规的空调系统中增加了组合式相变蓄冷装置，且蓄冷装置的相变温度范围为5℃～12℃，使得蓄冷空调系统能够在常规工况下达到蓄冷的目的，从而避免了制冷机组在低温制冷时的制冷效率降低。在电力需求响应事件发生时，可关闭制冷机组，建筑冷负荷由相变蓄冷系统承担。同时，在非响应事件当天用电高峰时段，也能起到一定的消峰填谷作用。Due to the addition of a combined phase change cold storage device in the conventional air conditioning system, and the phase change temperature range of the cold storage device is 5°C to 12°C, the cold storage air conditioning system can achieve the purpose of cold storage under normal working conditions, thus avoiding the need for refrigeration. The cooling efficiency of the unit is reduced when the unit is cooling at low temperature. When a power demand response event occurs, the refrigeration unit can be shut down, and the cooling load of the building is borne by the phase change cold storage system. At the same time, during the peak hours of electricity consumption on the day of non-response events, it can also play a certain role in peak elimination and valley filling.
本发明包括4种系统运行模式，包括主机单独供冷、主机蓄冷、蓄冷装置单独供冷及主机供冷同时蓄冷：The present invention includes 4 kinds of system operation modes, including independent cooling of the main engine, cold storage of the main engine, independent cooling of the cold storage device, and simultaneous cold storage of the main engine:
主机单独供冷时，冷水机组、冷冻水循环泵开启，一号电磁阀和二号电动调节阀打开，二号电磁阀、一号电动调节阀关闭。冷冻水从冷水机组送出，经冷冻水循环泵到达板式换热器，在板式换热器中充分换热后回到冷水机组形成主机单独供冷循环。When the main engine is cooling alone, the chiller unit and the chilled water circulation pump are turned on, the No. 1 solenoid valve and No. 2 electric regulating valve are opened, and the No. 2 solenoid valve and No. 1 electric regulating valve are closed. The chilled water is sent out from the chiller, and reaches the plate heat exchanger through the chilled water circulating pump, and returns to the chiller after sufficient heat exchange in the plate heat exchanger to form a separate cooling cycle for the host.
主机蓄冷时，冷水机组、冷冻水循环泵开启，一号电磁阀和一号电动调节阀打开，二号电磁阀、二号电动调节阀关闭。大于2℃的冷冻水(冷水机组设置2℃冷冻水出水低温保护)从冷水机组送出，经冷冻水循环泵到达相变组合式蓄冷装置，低温冷冻水先与第一个储存空间中相变温度为5℃的相变球状密封材料，并依次流经第2储存空间(相变温度8℃)、第3储存空间(相变温度10℃)、第4储存空间(相变温度12℃)的换热过程，把冷冻水中携带的冷量储存在相变材料中，之后回水回到冷水机组，形成主机蓄冷循环。When the main engine is storing cold, the chiller unit and the chilled water circulation pump are turned on, the No. 1 solenoid valve and No. 1 electric regulating valve are opened, and the No. 2 solenoid valve and No. 2 electric regulating valve are closed. Chilled water greater than 2°C (the chiller is set with 2°C chilled water outlet low-temperature protection) is sent from the chiller, and reaches the phase-change combined cold storage device through the chilled water circulation pump. The low-temperature chilled water first has a phase change temperature of 5 °C phase-change spherical sealing material, and flow through the heat exchange of the second storage space (phase transition temperature 8 °C), the third storage space (phase transition temperature 10 °C), and the fourth storage space (phase transition temperature 12 °C) in sequence In the process, the cold energy carried in the chilled water is stored in the phase change material, and then the return water returns to the chiller to form a cold storage cycle of the host machine.
主机供冷同时蓄冷时，冷水机组、冷冻水循环泵开启，一号电磁阀、一号电动调节阀和二号电动调节阀打开，二号电磁阀关闭。大于2℃的冷冻水经冷冻水循环泵分配到板式换热器和相变组合式蓄冷装置，回水回到冷水机组，形成主机供冷同时蓄冷循环。When the main engine is supplying cold and storing cold at the same time, the chiller unit and the chilled water circulation pump are turned on, the No. 1 solenoid valve, No. 1 electric control valve and No. 2 electric control valve are opened, and the No. 2 solenoid valve is closed. The chilled water greater than 2°C is distributed to the plate heat exchanger and the phase change combined cold storage device through the chilled water circulation pump, and the return water returns to the chiller to form a cold storage cycle for the main engine.
蓄冷装置单独供冷时，冷水机组关闭，冷冻水循环泵开启，二号电磁阀和二号电动调节阀开启，一号电磁阀和一号电动调节阀关闭。由板式换热器释冷回水流入相变组合式蓄冷装置，先进入第4储存空间中与相变温度为12℃的相变材料换热，随后依次流经第3储存空间(相变温度10℃)、第2储存空间(相变温度8℃)、第1储存空间(相变温度5℃)与之换热，把储存在相变材料中冷量释放到循环水中，之后，释冷出水供给板式换热器，完成蓄冷装置单独供冷循环。When the cold storage device supplies cooling alone, the chiller is turned off, the chilled water circulation pump is turned on, the No. 2 solenoid valve and No. 2 electric regulating valve are turned on, and the No. 1 solenoid valve and No. 1 electric regulating valve are closed. The return water released from the plate heat exchanger flows into the phase change combined cold storage device, first enters the fourth storage space to exchange heat with the phase change material with a phase change temperature of 12°C, and then flows through the third storage space (phase change temperature 10°C), the second storage space (phase change temperature 8°C), and the first storage space (phase change temperature 5°C) exchange heat with it, release the cold stored in the phase change material to the circulating water, and then release the cold The effluent is supplied to the plate heat exchanger to complete the separate cooling cycle of the cold storage device.
与现有技术相比，本发明的有益效果体现在以下几方面：Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:
(1)与冰蓄冷系统相比，冷冻水工作温度大于2℃，普通工况的制冷系统即可完成蓄冷过程，制冷系统蒸发温度较高，主机制冷效率较高，且冷媒为水，且无需特制溶液；(1) Compared with the ice storage system, the working temperature of chilled water is greater than 2°C, and the refrigeration system under normal working conditions can complete the cold storage process. The evaporation temperature of the refrigeration system is higher, and the cooling efficiency of the main engine is higher. special solution;
(2)与水蓄冷系统相比，相变潜热为140KJ/Kg～180KJ/Kg，较水显热蓄冷4.2KJ/(Kg·℃)高，提高了单位物质的蓄冷/释冷能力；(2) Compared with the water cold storage system, the latent heat of phase change is 140KJ/Kg～180KJ/Kg, which is higher than the water sensible heat storage of 4.2KJ/(Kg·℃), which improves the cold storage/release capacity of the unit substance;
(3)采用分层组合式多种相变材料的蓄冷装置，相比单一相变材料，综合考虑了效蓄/释冷的效率，增大了相变材料与水之间的传热温差。通过各阀门的调节，蓄冷/释冷循环时，冷冻水流向相反，即蓄冷时冷冻水流向是从低温相变材料到高温相变材料，而释冷时则相反，这种运行策略能够提供更高的蓄冷出水温度，更低的释冷出水温度，从而提高了蓄冷/释冷的效率。(3) The cold storage device using layered and combined multiple phase change materials, compared with a single phase change material, comprehensively considers the efficiency of effective storage/cooling release, and increases the heat transfer temperature difference between the phase change material and water. Through the adjustment of each valve, during the cold storage/cooling release cycle, the chilled water flows in the opposite direction, that is, the chilled water flows from the low-temperature phase-change material to the high-temperature phase-change material during cold storage, and the opposite is true during cooling. This operation strategy can provide more High cold storage outlet water temperature, lower cooling outlet water temperature, thus improving the efficiency of cold storage/cooling release.
附图说明Description of drawings
图1为本发明的相变组合式蓄冷装置的结构示意图；Fig. 1 is the structural representation of the phase change combined cold storage device of the present invention;
图2为本发明空调系统的连接示意图。Fig. 2 is a schematic diagram of the connection of the air conditioning system of the present invention.
其中，1为冷水机组，2为冷冻水循环泵，3为用户侧冷水变频泵，4为一号电磁阀，5为一号电动调节阀，6为二号电磁阀，7为二号电动调节阀，8为板式换热器，9为相变材料储存箱，90为一号水口，91为第1储存空间，92为第2储存空间，93为第3储存空间，94为第4储存空间，95为二号水口，10为用户需求末端，11为流水孔道，12为相变材料。Among them, 1 is the chiller, 2 is the chilled water circulation pump, 3 is the user-side cold water frequency conversion pump, 4 is the No. 1 solenoid valve, 5 is the No. 1 electric control valve, 6 is the No. 2 solenoid valve, and 7 is the No. 2 electric control valve. , 8 is the plate heat exchanger, 9 is the phase change material storage tank, 90 is the No. 1 nozzle, 91 is the first storage space, 92 is the second storage space, 93 is the third storage space, 94 is the fourth storage space, 95 is the No. 2 nozzle, 10 is the terminal required by the user, 11 is the flow channel, and 12 is the phase change material.
具体实施方式detailed description
下面对本发明的实施例作详细说明，本实施例在以本发明技术方案为前提下进行实施，给出了详细的实施方式和具体的操作过程，但本发明的保护范围不限于下述的实施例。The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.
实施例Example
一种组合式相变蓄冷装置，其结构如图1所示，该蓄冷装置包括设有3块隔板的相变材料储存箱9以及储存在相变材料储存箱9内的相变材料12，3块隔板将相变材料储存箱9分割成4个储存空间，第1储存空间91的外侧设有一号水口90，第4储存空间94的外侧设有二号水口95，每块隔板的上端或下端设有流水孔道11，且一号水口90、3个流水孔道11、二号水口95形成上下交错排列的冷水通道。本发明利用组合式相变材料12蓄冷的方式，利用相变材料12的相变潜热提高单位物质的蓄冷/释冷能力，减小蓄冷装置的占地空间。A combined phase-change cold storage device, its structure as shown in Figure 1, the cold storage device includes a phase-change material storage box 9 with three partitions and a phase-change material 12 stored in the phase-change material storage box 9, Three partitions divide the phase-change material storage box 9 into four storage spaces, the outside of the first storage space 91 is provided with a No. 1 nozzle 90, and the outside of the fourth storage space 94 is provided with a No. 2 nozzle 95. The upper or lower end is provided with a water flow channel 11, and the No. 1 water outlet 90, the 3 water flow channels 11, and the No. 2 water outlet 95 form a cold water channel arranged in a staggered manner up and down. The present invention utilizes the cold storage method of the combined phase change material 12, utilizes the phase change latent heat of the phase change material 12 to improve the cold storage/cooling release capacity of a unit substance, and reduces the occupied space of the cold storage device.
相变材料12为正十四烷和十六烷的混合物，正十四烷所占的体积比例从第1储存空间91到第4储存空间94逐渐减小，第1储存空间91中正十四烷的体积比例为60～65％，第2储存空间92中正十四烷的体积比例为40～45％，第3储存空间93中正十四烷的体积比例为30～35％，第4储存空间94中正十四烷的体积比例为20～25％。本实施例采用的正十四烷的体积比例分别为61.66％、42.78％、33.33％和22.91％。The phase change material 12 is a mixture of n-tetradecane and hexadecane, and the volume ratio of n-tetradecane gradually decreases from the first storage space 91 to the fourth storage space 94, and the n-tetradecane in the first storage space 91 The volume ratio of n-tetradecane in the second storage space 92 is 40-45%, the volume ratio of n-tetradecane in the third storage space 93 is 30-35%, and the fourth storage space 94 The volume ratio of n-tetradecane is 20-25%. The volume proportions of n-tetradecane used in this embodiment are 61.66%, 42.78%, 33.33% and 22.91%, respectively.
采用上述比例的相变材料12，四个相变材料12的相变温度分别5℃、8℃、10℃和12℃，相变潜热为140KJ/Kg～180KJ/Kg，不同相变材料分层组合提高了蓄冷和释冷过程的传热温差，从而提高了换热效率，实现需求响应事件供热需求。Using the phase change material 12 in the above ratio, the phase change temperatures of the four phase change materials 12 are 5°C, 8°C, 10°C and 12°C respectively, and the latent heat of phase change is 140KJ/Kg～180KJ/Kg, and different phase change materials are layered The combination improves the heat transfer temperature difference between the cold storage and cooling release process, thereby improving the heat exchange efficiency and realizing the demand response event heating demand.
一种采用如上组合式相变蓄冷装置的空调系统，其结构如图2所示，包括冷水单元、用户需求末端10以及用于冷水单元和用户需求末端10热交换的板式换热器8，用户需求末端10通过冷水变频泵3与板式换热器8形成闭路循环，冷水单元包括冷水机组1和蓄冷装置，冷水机组1的出水口的依次通过一号电磁阀4、冷冻水循环泵2和二号电动调节阀7与板式换热器8的冷水进水口连接，板式换热器8的冷水出水口通过三通阀分别与冷水机组1的进水口及相变材料储存箱9的二号水口95连接，相变材料储存箱9的进水口通过三通阀分别与位于一号电磁阀4和冷冻水循环泵2之间的管道及位于冻水循环泵和二号电动调节阀7之间的管道连通，并分别在两条管路上设置二号电磁阀6和一号电动调节阀5。An air conditioning system using the above combined phase change cold storage device, its structure is shown in Figure 2, including a cold water unit, a user demand terminal 10, and a plate heat exchanger 8 for heat exchange between the cold water unit and the user demand terminal 10, the user The demand terminal 10 forms a closed circuit cycle through the cold water frequency conversion pump 3 and the plate heat exchanger 8. The cold water unit includes the chiller 1 and the cold storage device. The water outlet of the chiller 1 passes through the first solenoid valve 4, the chilled water circulation pump 2 and the second The electric regulating valve 7 is connected to the cold water inlet of the plate heat exchanger 8, and the cold water outlet of the plate heat exchanger 8 is respectively connected to the water inlet of the chiller 1 and the No. 2 water outlet 95 of the phase change material storage tank 9 through a three-way valve , the water inlet of the phase change material storage tank 9 communicates with the pipeline between the No. 1 solenoid valve 4 and the chilled water circulation pump 2 and the pipeline between the frozen water circulation pump and the No. 2 electric regulating valve 7 respectively through a three-way valve, and The No. 2 solenoid valve 6 and the No. 1 electric control valve 5 are arranged on the two pipelines respectively.
本实施例包括4种系统运行模式，包括主机单独供冷、主机蓄冷、蓄冷装置单独供冷及主机供冷同时蓄冷：This embodiment includes 4 kinds of system operation modes, including independent cooling of the main engine, cold storage of the main engine, independent cooling of the cold storage device, and simultaneous cooling storage of the main engine:
主机单独供冷时，冷水机组1、冷冻水循环泵2开启，一号电磁阀4和二号电动调节阀7打开，二号电磁阀6、一号电动调节阀5关闭。冷冻水从冷水机组1送出，经冷冻水循环泵2到达板式换热器8，在板式换热器8中充分换热后回到冷水机组1形成主机单独供冷循环。When the main engine is cooling alone, the chiller 1 and the chilled water circulation pump 2 are turned on, the No. 1 solenoid valve 4 and No. 2 electric regulating valve 7 are turned on, and the No. 2 solenoid valve 6 and No. 1 electric regulating valve 5 are closed. The chilled water is sent from the chiller 1, and reaches the plate heat exchanger 8 through the chilled water circulation pump 2, and returns to the chiller 1 after sufficient heat exchange in the plate heat exchanger 8 to form a separate cooling cycle for the host.
主机蓄冷时，冷水机组1、冷冻水循环泵2开启，一号电磁阀4和一号电动调节阀5打开，二号电磁阀6、二号电动调节阀7关闭。大于2℃的冷冻水从冷水机组1送出，经冷冻水循环泵2到达相变组合式蓄冷装置，低温冷冻水先依次与想变温度为5℃、8℃、10℃和12℃的相变材料换热，把冷冻水中携带的冷量储存在相变材料中，之后回水回到冷水机组1，形成主机蓄冷循环。When the main engine is storing cold, the chiller unit 1 and the chilled water circulation pump 2 are turned on, the No. 1 solenoid valve 4 and No. 1 electric regulating valve 5 are turned on, and the No. 2 solenoid valve 6 and No. 2 electric regulating valve 7 are closed. Chilled water greater than 2°C is sent from the chiller 1, and reaches the phase-change combined cold storage device through the chilled water circulation pump 2. The low-temperature chilled water is first replaced with phase-change materials with desired temperatures of 5°C, 8°C, 10°C, and 12°C. The cold energy carried in the chilled water is stored in the phase change material, and then the return water returns to the chiller 1 to form a cold storage cycle of the host machine.
主机供冷同时蓄冷时，冷水机组1、冷冻水循环泵2开启，一号电磁阀4、一号电动调节阀5和二号电动调节阀7打开，二号电磁阀6关闭。大于2℃的冷冻水经冷冻水循环泵2分配到板式换热器8和相变组合式蓄冷装置，回水回到冷水机组1，形成主机供冷同时蓄冷循环。When the main engine is supplying cold and storing cold at the same time, chiller 1 and chilled water circulating pump 2 are turned on, No. 1 solenoid valve 4, No. 1 electric regulating valve 5 and No. 2 electric regulating valve 7 are turned on, and No. 2 solenoid valve 6 is closed. The chilled water greater than 2°C is distributed to the plate heat exchanger 8 and the phase change combined cold storage device through the chilled water circulation pump 2, and the return water returns to the chiller 1 to form a cold storage cycle for the main engine to supply cold.
蓄冷装置单独供冷时，冷水机组1关闭，冷冻水循环泵2开启，二号电磁阀6和二号电动调节阀7开启，一号电磁阀4和一号电动调节阀5关闭。由板式换热器8释冷回水流入相变组合式蓄冷装置，依次和12℃、10℃、8℃和5℃的相变材料换热，把储存在相变材料中冷量释放到循环水中，之后，释冷出水供给板式换热器8，完成蓄冷装置单独供冷循环。When the cold storage device supplies cooling alone, the chiller 1 is turned off, the chilled water circulation pump 2 is turned on, the No. 2 solenoid valve 6 and the No. 2 electric regulating valve 7 are turned on, and the No. 1 solenoid valve 4 and No. 1 electric regulating valve 5 are closed. The cold return water released by the plate heat exchanger 8 flows into the phase change combined cold storage device, and exchanges heat with the phase change materials at 12°C, 10°C, 8°C and 5°C in sequence, and releases the cold stored in the phase change materials to the circulation In the water, afterward, release the cold outlet water to supply the plate heat exchanger 8, and complete the cold supply cycle of the cold storage device alone.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547950.5ACN106197114B (en) | 2016-07-13 | 2016-07-13 | A kind of combined type phase change cold-storage device and the air-conditioning system using the cold-storage device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547950.5ACN106197114B (en) | 2016-07-13 | 2016-07-13 | A kind of combined type phase change cold-storage device and the air-conditioning system using the cold-storage device |
| Publication Number | Publication Date |
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| CN106197114Atrue CN106197114A (en) | 2016-12-07 |
| CN106197114B CN106197114B (en) | 2018-02-09 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610547950.5AActiveCN106197114B (en) | 2016-07-13 | 2016-07-13 | A kind of combined type phase change cold-storage device and the air-conditioning system using the cold-storage device |
| Country | Link |
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| CN (1) | CN106197114B (en) |
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