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This paper analyzed factors influencing the bubble detection rate in ultrasonic leak detection of fuel tank, studied the characteristics of reflection sound fields of ultrasonic transducers, and proposed a new 8-channel parallel scanning detection mode, maximizing the repetition frequency of each transducer. Then comparative experiments were conducted between 8-channel parallel ultrasonic leak detection...
When the fuel of two boilers in one Power Plant was changed to SHENHUA coal, a serial of problems were appeared, such as a lower temperature of the main steam, a larger deviation of the reheat steam temperature and a higher temperature of the flue gas, etc. Through a deep theoretical analysis, it was found that the insufficiency of heat exchange surfaces of superheaters was the main reason caused...
Pressure excursion after fame out is an important but a less reported issue in large-scale tangentially fired boilers, since they endanger largely boilers operation. Simulations are conducted in this paper to study the issue. Perfect agreement between the simulation results and key boiler design values and available site operation records indicates that the calculations are reliable. Based on the...
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