A combined gas condensing heating system energy saving control method, system and device

Abstract

The invention discloses an energy-saving control method of a combined gas condensing heat supply system. The method is characterized in that the system comprises a main controller, and a plurality of gas condensing heat supply single units which are connected with the main controller; the optimal operation load of each single unit is G0. The method comprises the steps of S1, acquiring the current total load G of the system; S2, subtracting G from G0 until obtaining the rest load Gr less than G0, comparing the Gr with the preset load Gs of the single units, starting n+1 single units if Gr is not less than Gs, wherein the load of each of the front n single units is G0, and the load of the (n+1)th single unit is Gr; starting n single units if Gr is less than Gs, wherein the load of each single unit is G0+Gr / n; S3, controlling the single units to run according to the decision making result. The invention further discloses an energy saving control system and device of the combined gas condensing heat supply system. According to the method, the operation load of single gas condensing heat supply unit is reasonably distributed according to the real-time heat supply demand, so that the energy can be saved to the maximum.

Description

technical field [0001] The invention relates to the field of energy-saving control of condensing boilers, in particular to an energy-saving control method, system and device for a combined gas-fired condensing heating system. Background technique [0002] The gas condensing heating system is a new type of high-efficiency environmental protection system that adopts the technology of 100% complete premixing of gas and air in an appropriate proportion before entering the internal combustion of the heat exchanger; The body of the device is cooled and condensed to recover the latent heat of vaporization of most of the water vapor in the flue gas, which greatly improves the system efficiency and effectively reduces the exhaust gas temperature. [0003] Compared with the traditional atmospheric gas boiler, the gas condensing heating system has become more energy-saving, environmentally friendly and efficient due to the use of 100% full premixed combustion, a new combustion method a...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that it is difficult to meet the needs of large-area heating and various needs of customers in the current single gas condensing heating system, and the power cannot be adjusted flexibly, and there is an area occupied when multiple gas condensing heating single units are used together. Large area, inconvenient installation and many other shortcomings, especially when multiple gas condensing heating units are running at the same time, because there is no relevant control system to coordinate the distribution of the load of each unit, resulting in a large load work demand or a large load caused by start-up and stop Fluctuations, each unit is involved in the adjustment of each other, making it impossible for each unit in the gas condensing heating system to achieve a reasonable load distribution and transfer

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