List the basic components of a boiler and explain it’s primary purpose.
What will be an ideal response?
The primary purpose of a boiler is to produce steam. The basic components of a boiler include; steam generating drum, mud drum, downcomer, riser, steam generating tubes, superheated tubes, desuperheated tubes, burner, deaerator, furnace and stack, and water make-up. Boilers also have advanced instrumentation and control systems.
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Which of the following is a step in the start-up procedure for a shell-and-tube heat exchanger where the hot side is being lined up?
A. Verify that all drains and vents are shut. B. Partially open the hot side inlet valve. C. Open the cold side outlet valve. D. Establish the cold stream flow to the heat exchanger.
As a safety precaution, electric duct heaters should be wired so that they will not operate unless:
A) Other forms of heat are not operating. B) The fan is operating. C) Extra heat is needed. D) The second stage of the thermostat is closed.
A budget can be used to detect mechanical or other building problems ___________________.