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i. Suggest suitable instrument and the function used for item 1, 2, 3 and 4 labeled in Figure Q.4b. ii. Explain the operation of each instrument in Q.4b(i).

i. Suggest suitable instrument and the function used for item 1, 2, 3 and 4 labeled in Figure Q.4b. ii. Explain the operation of each instrument in Q.4b(i).

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter15: Residential Air-conditioning Control Systems
Section: Chapter Questions
Problem 10RQ
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(b) Figure Q.4b is showing the level control P&ID of a boiler drum system. The boiler drum is supplying a constant steam flow to the next heat exchange station which is monitored closely by the operator at the site. The water in the boiler has to be maintained at the set point value in order to ensure that the steam produced is complying the requirement of the heat exchange station. Temperature measurement of the boiler drum is transmitted wirelessly to the control room for continuous monitoring of the boiler drum operation. Flow Set point LY Level Set point Steam Feedwater Boiler Drum Figure Q.4b P&ID of boiler drum system
Transcribed Image Text:(b) Figure Q.4b is showing the level control P&ID of a boiler drum system. The boiler drum is supplying a constant steam flow to the next heat exchange station which is monitored closely by the operator at the site. The water in the boiler has to be maintained at the set point value in order to ensure that the steam produced is complying the requirement of the heat exchange station. Temperature measurement of the boiler drum is transmitted wirelessly to the control room for continuous monitoring of the boiler drum operation. Flow Set point LY Level Set point Steam Feedwater Boiler Drum Figure Q.4b P&ID of boiler drum system
i. Suggest suitable instrument and the function used for item 1, 2, 3 and 4 labeled in Figure Q.4b. ii. Explain the operation of each instrument in Q.4b(i).
Transcribed Image Text:i. Suggest suitable instrument and the function used for item 1, 2, 3 and 4 labeled in Figure Q.4b. ii. Explain the operation of each instrument in Q.4b(i).
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