1. The key to improve the energy saving effect of gas boiler heating system
For gas-fired boiler, to improve the energy-saving effect of heating system, we need to improve the transmission efficiency of pipe network and boiler efficiency.
1.1 improve boiler efficiency
In short, to improve the efficiency of the boiler, the first thing is to control the start-up and stop frequency of the boiler and reduce the standby time. Every time the boiler is opened and closed, a certain amount of gas energy will be consumed. Even if the boiler is in the standby state, a lot of heat will be lost. The second thing is to optimize the selection and configuration of the boiler design.
1.2 improve the transportation efficiency of pipe network
At present, most coal-fired boilers have been replaced by gas-fired boilers, and the cost of gas is relatively high. Therefore, we should improve the transmission efficiency of the pipe network, and adopt the room temperature control system and hydraulic balance system to achieve the goal.
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2. Energy saving technology of gas boiler heating system
2.1 frequency conversion technology of circulating water pump
In different periods of time, the user's demand for heat is different. The frequency conversion technology of circulating water pump is to flexibly adjust the frequency of pump motor according to the user's demand, reduce the circulating water of the system, and reduce the energy consumption of pump motor. There is a positive proportional relationship between the head, circulating water volume, shaft power and the speed of the circulating water pump. Therefore, using this technology, we can not only reduce the speed of the pump, but also reduce the energy consumption of the pump, and obtain a good energy-saving effect.
2.2 climate compensation technology
The climate compensation system integrates several parts, such as temperature sensor, electric control valve, and climate compensator. Firstly, the heating parameter curve is preset, and the outdoor temperature sensor will obtain the temperature change of the outdoor environment. After the climate compensator accurately calculates the water supply temperature, the electric control valve is integrated to scientifically adjust the boiler water supply and return water, so as to achieve the purpose of regulating the overall water supply temperature of the system With this technology, the system can provide appropriate heat according to the temperature change.
2.3 flue gas condensation recovery
The flue gas discharged from the gas-fired boiler still contains a lot of heat. By using this technology, we can collect the waste heat of flue gas and make secondary use of it, and use the heat of flue gas to increase the temperature of the return water of the heating system, so as to achieve the effect of energy saving. Firstly, the return water of heating system can reduce the temperature of flue gas and recover the heat; secondly, the return water of heating system can condense the water vapor in flue gas into water, and recover the heat in water vapor in disguised form.
To sum up, this paper first analyzes the key to improve the energy-saving effect of gas-fired boiler heating system, and then introduces several energy-saving technologies of gas-fired boiler heating system. Through the use of climate compensation technology, circulating water pump frequency conversion technology and flue gas condensation recovery technology, we can effectively solve some defects in the gas-fired boiler heating system, make rational use of energy, control the amount of gas used in the heating system, achieve the goal of heating and energy saving, and make contributions to energy conservation and sustainable development.
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