Energy-saving and emission-reducing regulation and control method for urban region boiler room central heating system

Abstract

The invention belongs to the technical field of urban central heating, in particular to an energy-saving and emission-reducing regulation and control method for urban central heating. On the premise that a frequency converter pump is installed first for flow control, the regulation and control method adopts the following technical measures: 1) limiting the fluctuation range of the temperature in a boiler furnace to less than 20 DEG C and ensuring that the temperature of the inlet and outlet water of the boiler is a rated temperature of between 60 and 130 DEG C; 2) adopting 'high flow and small temperature difference' for a pipeline system, wherein in the pipeline at user end, the flow is 1.1 to 1.25 times as much as calculated circulating flow, and the temperature difference is reduced by one fifth to one third; and 3) separately heating according to the functions of buildings, quantitatively predicating the change of heating load, and regulating heating according to an optimal regulating method. The regulation and control method has the advantages of realizing the regulation of the temperature of conventional heat source outlet water, regulating system temperature and flow, effectively improving heating quality and reducing the energy consumption of unit area.

Description

1. Technical Field [0001] The invention belongs to the technical field of central heating of boiler rooms in urban areas, and particularly relates to an energy-saving and emission reduction control method for central heating of boiler rooms in urban areas. 2. Background technology [0002] At present, central heating in urban areas has become the main heating method in winter in my country's cities, and heating by regional boiler rooms is an important part of central heating. However, due to the low level of operation and management, there are many problems such as poor heating quality, low energy utilization, and environmental pollution. [0003] Heating regulation methods for boiler rooms in urban areas mainly include boiler outlet temperature regulation at the heat source and boiler intermittent operation regulation, and are mainly adjusted based on the experience of the furnace worker on temperature changes. When the heating load changes, simply add more coal or Less coal is ...

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Problems solved by technology

However, due to the low level of operation and management, it leads to many problems such as poor heating quality, low energy utilization rate, and environmental pollution.

[0003] The heating adjustment methods for boiler rooms in urban areas mainly include the adjustment of boiler outlet water temperature at the heat source and the intermittent operation of the boiler, and the adjustment is mainly based on the experience of the boiler worker on the temperature change. When the heating load changes, simply by adding more coal or Add less coal to adjust the boiler outlet water temperature, the furnace temperature is unstable, and the boiler efficiency is low. During intermittent adjustment, the frequent ignition and flameout of the boiler seriously affect the boiler efficiency, the water conservancy of the pipeline is unstable, and the imbalance is serious, regardless of the building function Hourly heating is a serious waste. For example, public places and office buildings are heated as usual when there is no one, which causes a lot of waste, especially in colleges and universities and large enterprises and institutions. The proportion of office area is large and the office hours are relatively large. Short non-office hours, long holidays, greater waste, adjustment lag, unable to meet user needs

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