In recent years, the rapid economic development of China increasing power plant energy consumption, thermal equipment and pipelines as an important part of the plant, has a very large energy saving potential. To further improve the thermal power plant and power plant energy efficiency, should be systematically analysis of heat loss. In this paper, many representative sites are selected according to the operating conditions of the 600MW unit in Tuoketuo Power Plant. Based on field test and calculation analysis of the heat loss on the insulation layer, the energy saving effect of the unit insulation system is analyzed. Tests show that there are different degrees of excessive heat dissipation in boiler body, boiler down comer and drum.
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