Question

3. Suppose you are given a task as a consultant to design a boiler instrument system of drum type as shown in Figure 6. The energy to generate electricity is determined by its steam temperature and pressure measurement. Design all the aspects required to measure temperature and pressure of a boiler chamber. The design of the measurement system must consist of a system design block diagram, type of sensors, electronic design of the amplification or comparator and the signal conditioning circuit. (20 marks) 2 Description: 1. Convection Water wall tubes 2. Steam drum 3. Water drum 4. Furnace 5. Water wall tubes Figure 6

Answer 1

Solution:

The design of the Boiler instrument system is given in the fig.

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Design Pares sur Steam Tempenatune flouw Feed To o Pessune waten Level temperertune Panessuwne Compensarion Pmessuy Tempenatue Com pensetion Temp. Compensation Set point AZ contaa SiCHian Final contnol device 1-convection Borlen instsamentSystem design measning dempenetoe Pressune walen wall tubed V2. Steam dnum 3.Waten cum y. Funace 5. Waten uall tubes