chap 6

Card Set Information

Author:
ross
ID:
142596
Filename:
chap 6
Updated:
2012-03-19 20:11:08
Tags:
draft
Folders:

Description:
boilers
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  1. a damper is
    a device to create resistance in order to regulate the flow of air and gases of combustion in a boiler

    p165
  2. inadequate draft can result in
    soot and smoke caused by incomplete combustion

    p166
  3. the amount of natural draft increases with
    • the height of the chimney
    • the temp of the gases of combustion

    p167
  4. what is the breeching
    duct used to transport gases of combustion from the boiler to the stack

    p167
  5. by adding cold air to the gases of combustion going up the chimney, the heat of the gas is reduced and the movement is____
    slowed

    p168
  6. a damper or draft regulator is placed in the breeching. if closed it does what
    forces more air to too pass into the furnace, increasing the rate of combustion

    p168
  7. with forced draft systems air is pushed through the boiler with a fan(s) located
    in the front of the boiler furnace

    p169
  8. for an induced draft system the fan is located in the
    breeching

    p169
  9. where are the fans on a balanced draft system
    both in front of the furnace and after the boiler in the breeching

    p169
  10. with natural draft in the winter you would have
    more draft due to the temp diffrence

    p171
  11. what is a manometer used for
    to mesure draft

    p171
  12. draft is usually mesured in
    inches or tenths of an inch of a vertical column of water

    p171
  13. with a manometer a negitave pressure reading is indicated if
    the water level is higher on the breeching side than the atmosphere side

    p171
  14. a stack is another word for what when refering to a boiler
    chimney

    p174
  15. in order to prevent condensation form coming back to the boiler from the stack you should use
    an offset with a bottom cleanout and drain

    p175

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