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　　分体承压太阳能热水系统:

　　该结构是在原热水器内胆里增加换热盘管。换热介质在盘管内流动，通过盘管把热量传递给内胆里的水。此种换热结构的水箱在市场上占有率较高。

　　该结构的优点是盘管用铜管弯曲成形，防腐性能可靠，使用寿命长。缺点是:铜管的价格较贵，成本较高；由于盘管与内胆里的水接触面积一般会小于双层内胆结构的换热接触面积，因此换热速度比双层结构的换热方式慢。

　　③控制器。控制器是整个系统的大脑，通过各个位置传感器的电信号来控制整个系统的运行，目前有两种形式，一种是直接安装在水箱上的控制器，另一种为了用户的使用方便，安装在便于操作的卫生间或其他客户要求的位置。

　　控制方式有多种，可通过温差控制、最高温控制、定时加热控制等方式来调节水箱水温。

　　④泵站。泵站内设置循环泵、流量指示调节器、单向阀、泄压阀和压力表等[2]。

　　循环泵一般采用屏蔽式热水循环泵。流量指示调节器指示系统循环时的流量值，并根据流量的大小调节循环泵的转速。单向阀能在泵停止运转后防止倒流。泄压阀能保证系统的安全，当系统内的压力超过所能承受的最大值时开阀泄压。压力表显示系统中的压力值。

　　泵站和控制器可以组合成一体化的太阳能工作站。

　　⑤膨胀罐。整个系统是闭式液体循环系统，运行压力一般设在0.6～0.8MPa。介质被加热时会出现体积和压力的膨胀，为了平衡容量和压力，系统中需要使用膨胀罐。膨胀罐是一个由隔膜将气体（一般是氮气）与系统分成两部分的密闭式容器，它可以吸收和容纳因受热而体积膨胀的液体，平衡系统的容积和压力。系统冷却时，预充氮气的压力将隔膜推到底部；系统升温时，压力增大，系统液体压力高于预充氮气的压力，加热膨胀的介质流入膨胀罐。

　　⑥连接管路。集热器与贮热水箱，还有其他部件之间的连接一般采用铜管或者PP-R管，外面包裹保温材料减小热损。

　　2 工作特点

　　①分体承压阳台壁挂式家用太阳能热水器大大拓宽了太阳能热水器的使用范围，使得高层建筑非顶层的用户也可以安装使用太阳能热水器。并且易与建筑景观融为一体，改变了太阳能热水器摆放无序的状况。

　　②采用间接工质换热的强制循环方式，能大大地提高换热效率，循环系统中只有少量的循环介质，系统只要得到少量的热量就可以启动，而不像传统产品那样必须先加热真空管中的大量积水，因此在冬季比常规太阳热水器能提供更多的热水，这样可以满足热水的舒适性要求，并且水质安全可靠，性能稳定[3]

　　③采用全封闭结构，贮热水箱在室内，热损失小。

　　The split solar water heating is an active system, because it uses a pump with a controller to circulate the fluid between the heat pipe series solar collector and the storage tank, tank and solar collector are separate, while the collector is integrated in to the roof of the building, the tank and the pump station can installed anywhere of the building. The piping between the main components is made of brass and a special insulation with high temperature resistance for solar systems.

　　An Once Heat-exchange System is suit for climates where there is no risk of freezing. Recirculation freeze protection can be provided by the Recirculation feature in the controller. An Open Loop Water Heating System provides many advantages. It is the simplest and typically the least expensive active system to install. There is no heat exchanger, which allows efficient heat transfer directly to the water. The system operates at standard line pressure. It is simple to add capacity to the system if demand changes. The system integrates easily with existing systems.The main components ofOnce heat-exchangesplit solar water heating:

　　1) SIDITESolar collector

　　2)Solar Workstationincluding:

　　Circulation pump,

　　Check valve,

　　SIDITE intelligentsolar controllerwith sensors

　　rass connector

　　3) Solarpressurized tankfrom 100L to 500L

　　Advantages of SIDITE split solar water heating:

　　1) No disorder water tank on your roof

　　SIDITE split solar water heating systems is using a high efficiency solar collector on your roof

　　and a high pressurized storage tank in the house. Integrated in to the roof of the building

　　perfectly.

　　2) The perfectsolar collectorfor domestic hot water heating system can be combined with

　　existing energy source, such as your gas water heater, electric water heater, boiler, etc.

　　3) There have an auxiliary heating device--electric heater booster in the tank, so providing hot

　　water in case of cloudy or rainy days, you will no need to worry about it.

　　4) No water inside the tube, the system can still in service even with several tubes breakage.

　　5) Completely automatic.

　　6) Cut out your energy bills

　　Hot water heating (on average) accounts for 26% of your annual energy bill. With a SIDITE

　　solar water heater you could generate enough solar energy to heat 70% of your hot water,

　　FREE, year after year!

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