Identify what the function of the economizer section is.
What will be an ideal response?
The economizer section is used to increase boiler efficiency by preheating the water as it enters the system. This section is a series of headers and tubes located between the firebox and the stack. Temperatures are typically lower in the economizer section than in the rest of the system, but the hot flue gases moving out of the firebox and into the stack still have enough heat to offset energy costs. The economizer section in a boiler is very similar to the convection section in a fired heater systems. Both operate under the energy-saving concept of using the hot flue gases before they are lost out the stack.
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What is the correct firing sequence for an in-line, six cylinder diesel engine?
A. 1 - 5 - 3 - 6 - 2 - 4 B. 1 - 2 - 3 - 4 - 5 - 6 C. 6 - 5 - 4 - 3 - 2 - 1 D. 1 - 6 - 5 - 2 - 3 - 4
Capacitors are rated in units called the ____.
a. farad b. henry c. coulomb d. hertz
What are the steps involved in the Heli-Coil repair method?
What will be an ideal response?
Material conservation, better insulation, and a reduction in both energy needs and energy usage are benefits provided a builder or homeowners from what?
A) ORNL's Building Envelopes Program B) LEED for Homes case study C) Life-cycle analysis D) EnergyGuide label