Temperature control of steam generator

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Steam power plant configuration, design, and control

1/11/2012 · The proposed cascade control approach illustrated in Fig. 3 is applied to regulate superheated steam temperature of a boiler in a 300 MW power plant. In this simulation, the transfer functions of the inertia plant and the leading plant are Gplant1 ( s )=2.09/ (1+22.3 s) 4 and Gplant2 ( s )=−2.01/ (1+16 s) 2 respectively.

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An introduction to steam generation and distribution

At operating pressure, temperature of the feedwater, prior to entering the steam generator, is less than that at the saturated condition, i.e., the entering feedwater is under the subcooled condition. Within the steam generator, the feedwater temperature is elevated to the near-saturation temperature in the economizer. Thereafter, the sensible heat for bringing the feedwater to saturation and the latent heat for evaporation of saturated feedwater is added in the water-wall for generating steam. This steam is separated from the steam-water mixture coming out from the water-wall and purified in the boiler drum to ensure the supply of saturated steam. The saturated steam is further superheated to attain the desired energy level. The heat-transfer surfaces discussed so far, e.g., economizer, water-wall, superheaters/ reheaters, etc., are located in the steam generator …

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Full State Feedback Control of Steam Temperature in a Once …

Optimize Steam Temperature Control Loops to Improve Availability Increased cycling places additional mechanical stresses on boilers and heat recovery steam generators (HRSGs), particularly influenced by underperforming superheat and reheat loops. The

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Steam Generation Thermodynamics 101 | Power Engineering

8/9/2010 · Steam temperature is one of the most challenging control loops in a power plant boiler because it is highly nonlinear and has a long dead time and time lag. Adding to the challenge, steam temperature is affected by boiler load, rate of change of boiler load, air flow

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