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required parameter for design of boiler superheater

In October 2016, my company and the China Dunhuang International Hotel signed a ZWNSL2.1-1.0 / W-Y.Q vacuum condensing gas hot water required parameter for design of boiler superheater to provide heating and hot water for the hotel. The boiler implementing the response to the national policy of environmental protection requirements and local environmental protection departments on a series of low nitrogen emission standard boiler requirements, in terms of design, manufacture, installation and other sectors have strict checks to ensure that the boiler safe and stable operation.

Xiao Bian has talked to you before, the internal gas required parameter for design of boiler superheater room layout requirements, not only that, the external gas boiler room selection, there are also certain requirements, together with the many in order for gas-fired boilers to achieve great efficiency. Today, small series to tell us something about the external gas boiler room siting requirements.

Solution

1, due to the decrease of the atmospheric pressure, the fuel combustion speed slower burn time becomes longer, increasing the dissociation rate of the carbon dioxide, chemical incomplete combustion heat loss is increased. Solution to this problem is to appropriately increase the furnace volume, increased fuel residence time in the furnace.

2, no influence of the atmospheric pressure drop pairs exiled heat transfer coefficient of the heating surface, but decreases of Flame cause radiation heat transfer coefficient is reduced, so that the overall heat transfer coefficient is reduced. While reducing the radiation heat transfer coefficient caused by furnace exit gas temperature rise increases the convective heat transfer temperature difference, but to ensure that the exhaust gas temperature rises to a certain extent without excessive levels of convection heating surface area of ​​the boiler should be appropriate increase.

3, low-altitude wind pressure effect on the smoke characteristics of a large gas-fired boilers, gas boilers running in the plateau region, the burner selection must be a revision in its air volume and pressure, ensure that the output power and boiler burner output.

Generally speaking, after so many years of development, China's required parameter for design of boiler superheater industry has indeed made great progress, while the boiler industry and enterprises are also faced with various challenges. Boiler industry must adhere to market-oriented strategy, closely rely on scientific and technological progress, scientific and technological innovation, under the guidance of national energy and environmental policy, company structure and product structure adjustment, manufacture and sale of boilers in line with market demand in order to occupy in the fierce competition in the market place.

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Jul 06, 2010 · The first step in the design of heating surfaces is determining the heat duties of different components of the boiler heating surfaces. Atypical boiler would use the following four types of heating surfaces: Economizer Evaporator Superheater Reheater (for reheat boilers) Heat duty of these elements depends on the designed steam parameter of the boiler.

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ratio. Over the years, we have seen a steady increase of steam parameters also in recovery boilers, but current state-of-the-art is still far from power boiler figures. The limiting factors are the recovery boiler fuel/ash properties and the corrosion resistance of available superheater materials for these conditions.

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