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Exhaust gas temperature affected by thermal efficiency of steam generator
Author: Release Date: 2019-01-15
There are many factors that affect the thermal efficiency of the steam generator . Today, the effect of the exhaust temperature on the thermal efficiency of the boiler is emphasized.
The steam generator has obviously become a leader in the boiler industry. This device uses electric energy for heating and is environmentally friendly and pollution-free. The design of insulation materials reduces the heat loss of the boiler. The thermal efficiency is as high as 98% and the electricity cost is saved by about 50%. It is a very economical and durable small boiler.
So how to observe the influence of the exhaust temperature on the thermal efficiency of the steam generator? The lower the exhaust temperature of the steam generator, the smaller the exhaust loss. However, to reduce the exhaust temperature in the design, the heating surface on the tail of the steam boiler must be increased, which requires increased investment and metal consumption. If the exhaust temperature is too low to reach the flue gas dew point temperature, the sulfur dioxide in the flue gas will condense on the wall surface of the air preheater and form low temperature corrosion. This low-temperature corrosion is more severe when fuels with high sulfur content are used. The smoke exhaust temperature should be determined through technical and economic comparison. For large-capacity steam boilers, the rated exhaust temperature is generally between 110 ° C and 160 ° C.
Therefore, the exhaust temperature of the steam generator is not as low as possible. The temperature should be controlled according to the actual fuel situation, so as to maximize the thermal efficiency of the steam generator.

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