Thermostatic valve features

The key to the development of the temperature control valve lies in the temperature control part. The temperature sensing medium in the temperature sensor of the temperature control part can sense the external temperature, and make a corresponding response to control the opening of the valve core to control the flow through the temperature control valve.

Temperature sensors are filled with liquid working medium, gas working medium, and paraffin. The three types of sensors have their own characteristics. The control accuracy of liquid is the best, followed by gas, and paraffin is the worst. However, paraffin is easy to use and has low requirements on the production process. Bad sex. The working life of the sensor filled with liquid working medium or gas working medium is more than 20 years, and the working life of the paraffin sensor is about 5 years.

Radiator temperature control valve with built-in preset device is divided into two types: two-way valve and three-way valve, which are suitable for two-pipe system and single-pipe system respectively. The preset temperature control valve is used in the double-pipe system, which is beneficial to overcome the vertical imbalance caused by the liquid gravity in the system; while the three-way valve is beneficial to the water volume between the radiator branch pipe and the spanning pipe in the single-pipe system due to its small resistance. distribute. Due to the large temperature difference between the supply and return water, the required radiator area is small. At the same time, smaller pipes and valves can be selected. After installing the radiator temperature control valve, the double-pipe system becomes a variable flow system. The single-pipe system needs to add a bypass pipe due to the installation of the radiator temperature control valve. Therefore, whether or not a radiator temperature control valve is installed, it is basically a constant flow system.

If the heating system is a variable flow system, the frequency converter can be used to control the speed of the water pump to change the circulating water volume. When the circulating water volume is reduced by 50%, the power consumed by the equipment can theoretically be reduced by 87.5%. Therefore, after the dual-pipe system adopts the radiator temperature control valve, it can also obtain additional savings in power consumption. If the indoor is a single-pipe system circulating water pump, it is meaningless to use a frequency converter. The double-pipe system has not been popularized in the past, mainly because the vertical hydraulic imbalance caused by gravity in the double-pipe system cannot be solved in buildings with more than 3 floors or in high-rise buildings. The radiator thermostatic valve with built-in pre-set device solves this problem. The heating temperature required in the room can be preset through the temperature adjustment knob in the valve head, and the user can also adjust the heat supply at any time through the adjustment knob to reduce unnecessary energy consumption, create conditions for energy saving, and make energy saving change. for actionable action. Generally speaking, installing radiator thermostatic control valve can save you 10~20% of energy consumption.

In buildings that have installed radiator thermostatic valves, it has been proved that vertical temperature imbalance can be generally solved, the system works well, and indoor temperature regulation is realized. However, due to the fact that heat billing has not been implemented, users do not have enough energy-saving awareness to actively adjust the set temperature, and even usually set the valve at the highest temperature point, so how much energy can be saved by applying the radiator temperature control valve, dynamic adjustment There is still no practical basis for the impact of the external network, how to match and control the system, and the design scheme is not mature enough. After the actual implementation of the heating system based on heat billing, end users can adjust the room temperature according to their own needs.

The temperature control device in my country is no longer satisfied with the simple temperature control function, but pays more attention to the flow balance of the overall heating system. The purpose is to provide end users with a more comfortable living and working environment while being more efficient and energy-saving.