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1.Temperature control.
The flow rate of the primary network is controlled by an electric control valve, so that the outlet of the secondary network is kept at the set temperature.
The self-supporting temperature regulating valve is used to control the flow rate of the primary network, so that the outlet of the secondary network is kept at the set temperature.
Automatically adjust the outlet temperature of the secondary network according to the outdoor temperature.
2.Pressure, differential pressure control.
Secondary side supply and return pressure difference control, secondary side return pressure control.
3.Auto-hydration.
Frequency conversion water replenishment, the output of the frequency converter is controlled by the pressure signal of the secondary network return water to achieve automatic water replenishment and keep the system at constant pressure.
The electrical control of the electric contact pressure gauge is used to control the start and stop of the water replenishment pump by using the upper and lower limits of the secondary network system pressure compared with previous years, so that the system can maintain a constant pressure.
4.Optimize in place.
Return Water Temperature Limit, Heat Flow (Water Flow) Limit, Return Water Temperature Difference Limit, Scale Detection.
5.Displays alarms.
Right. The temperature, pressure, heat, flow rate and outdoor temperature of the inlet and outlet of the primary and secondary networks are automatically monitored and controlled by the microcomputer, and the system overvoltage, motor overheating, power supply phase loss, and dirt collector blockage are automatically alarmed.
6.Communication features.
The controller of the unit has a standard 485 communication interface, which can collect the controller parameters of the power station with the monitoring center through the next rotation patrol in active and passive mode, and upload them in time when the controller alarms.
7.The function of the control area of the unit is determined according to the field situation of the heat exchange station, which can be unattended.
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Substation unit is a very common air conditioning equipment on the market, often used in refrigeration and heating and other occasions. Here are a few common substation brands and models recommended::
1.Daikin Substations: As one of the world's top air conditioner manufacturers, Daikin has guaranteed the quality of its substations and substations. Its products include feng shui cold and hot water units, membrane shell cold and hot water units, feng shui membrane shell cold and hot water units and other models, with stable performance and long service life.
2.Hitachi heat exchanger unit: Hitachi is a well-known electrical appliance manufacturer in Japan, and its heat exchanger unit products cover various types such as air conditioners, feng shui units, cold and hot water units, etc., which are suitable for different occasions and needs.
3.Philips substations: Philips is the world's leading medical equipment company, and its substation products are widely used in hospital heating and cooling systems. Philips' substation units are highly efficient, energy-saving, environmentally friendly, safe, and easy to operate, and are well received by users.
4.Mitsubishi Heavy Industries Substation Units: As a leading enterprise in Japan's machinery manufacturing industry, Mitsubishi Heavy Industries' substation units are of guaranteed quality. Its products cover air source heat pumps, hot and cold water units, feng shui units and other types, which can meet the needs of different users.
The above are only the recommendations of some mainstream brands and models, and it is also necessary to choose the right substation products according to specific needs and occasions.
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1. The standard modular design of the heat exchanger unit can flexibly select the control content according to the user's situation and reduce the investment.
2. The structure of the heat exchanger unit is compact, and the installation space required is small.
3. The water supply temperature of the heat exchanger unit can be set according to the program, which can change with the outdoor ambient temperature, the temperature and time of the standard room, and the heating quality is high and energy saving.
4. The heat exchanger unit makes the operation simple and easy to install and maintain.
5. The heat exchanger unit works reliably, with excellent performance and high degree of automation.
6. The water replenishment of the heat exchanger unit system adopts frequency conversion control, automatic water replenishment and pressure stabilization.
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It should be to look at different brands of heat exchangers.
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<> volume makes the guess type heat exchanger ** paper.
1. About the installation of ZhaoqingVolumetric heat exchanger unit is mainly used in hotels, hospitals and other buildings with centralized hot water preparation, mainly mainly composed of volumetric heat exchanger, circulating water pump, expansion tank and other parts of the connection and assembly, in terms of installation, one is that the manufacturer ships in bulk separately, and carries out free position assembly and connection after transportation to the equipment room; The other is assembled on a base in the manufacturing workshop and transported to the equipment room in the form of a complete unit. In either case, when you install the heat exchanger unit, you can refer to the hot water system diagram and the manufacturer's machine paper to connect the relevant nozzles.
2. PrecautionsWhen the installation of the volumetric heat exchanger unit, the installation and construction unit needs to strictly refer to the system diagram and the equipment diagram for pipeline connection; If the necessary temperature control system installation is to be carried out, a self-acting electric control valve is assembled on the heat source inlet pipe and a temperature sensor is threaded into the positive displacement heat exchanger barrel.
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Because of the advantages of compact structure, reliable operation, simple and intuitive operation, the substation unit is the preferred high-efficiency and energy-saving product. It is suitable for sanitary hot water in residences, institutions, factories and mines, hospitals, hotels, schools and other occasions.
Performance characteristics of Kangjinghui plate heat exchanger unit].
1.Automatic conversion of water pump: The use of programmable PLC can make the water pump automatic inspection, fault protection, automatic switching, and mutual backup function.
2.Power-off protection: The system automatically cuts off the heat source after a sudden power failure to protect the equipment from damage.
3.Multi-function touch screen, more convenient operation: using the man-machine screen touch screen, each parameter is more convenient to display and operate.
4.Customized temperature setting: The unit can automatically adjust the heat medium flow according to the heating area and set temperature, saving energy costs.
5.Automatic pressure relief, double safety protection: when the secondary water supply pressure is higher than the high limit of the water supply set value, the water discharge solenoid valve will be automatically opened, and the safety valve will be equipped at the same time to achieve double insurance.
6.Water shortage and pressure loss protection: If the pressure is lower than the set pressure, the circulating pump will automatically stop running immediately, and start the water replenishment pump to replenish water, knowing that the pressure is normal.
7.One-key start of the unit: The unit can be started with one key, which can automatically detect data, automatically control, and automatically start the water replenishment pump, circulating pump and heat source switch.
8.Low water level protection of water tank: the pump will automatically stop the pump when there is a shortage of water, protect the water pump, and prevent the pump from burning out the motor due to water shortage.
9.Outdoor temperature compensation: Automatically adjust the water supply temperature of the system according to the outdoor temperature change to save energy consumption.
10.Automatic frequency conversion constant pressure control of water replenishment pump: The water replenishment pump can control the frequency conversion system according to the return water pressure of the system, with constant pressure, good performance and stable operation.
11.More accurate control of water supply temperature: Siemens electric temperature control valve is used to control the water outlet temperature with high precision, saving energy and reducing consumption. When the power is not off, the heat medium inlet is automatically closed to prevent accidents.
12.Automatic frequency conversion control of circulating pump: according to the increase or decrease of the user's heating area, automatic frequency conversion adjusts the frequency, speed and power consumption of the circulating pump.
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Because the substation unit has the following characteristics:
The industrial control calculation or intelligent temperature regulator is used to intelligently control the water supply temperature, that is, the water supply temperature can be set according to the program, and the temperature and time of the outdoor environment, the standard room temperature and time can be changed, and the heating quality is high and energy saving.
The industrial control computer displays, stores and prints various operating parameters, including: heat medium flow, heat medium temperature, heat medium pressure, heat supply, outdoor temperature, standard room temperature, water supply temperature, condensate temperature, water supply pressure, etc.
When the heat exchange of steam and water, the condensate heat exchange section and the condensate temperature control are set up to make full use of the heat of the condensate.
The water replenishment of the system adopts frequency conversion control, automatic water replenishment and pressure stabilization.
The high-performance stainless steel plate heat exchanger is adopted, and the unit is small in size and occupies a small area.
The circulating water pump can be variable, and the variable operation.
The standard modular design can flexibly select the control content according to the user's situation and reduce the investment.
The operating parameters are displayed digitally, which is convenient and reliable.
KL plate heat exchanger unit has a compact structure, using a plate heat exchanger with high energy efficiency ratio and small volume designed and manufactured by our company, and the water pump adopts imported or domestic high-quality vertical water pump, etc., with compact structure and small installation space.
It makes the operation simple and easy to install and maintain. The control and heat exchange regulation of the substation unit adopts the control components and systems of imported or domestic famous brands, which work reliably, have excellent performance and high degree of automation. With just a few trainings, you can master the operation of the substation.
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For example, the hot water from the municipal pipe network is 90 degrees, while you only need 50 degrees of water for floor heating. Then you need to use a substation to change the water from 90 degrees to 50 degrees. That's why some projects use substations.
There are no advantages or disadvantages to substations, they are just a unit that lowers the excessively high water temperature to the desired water temperature. Usually there is one or several plates for two or more circulating water pumps.
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