a)
b)
c)
Which of the following statements is NOT correct regarding excess air in the
combustion
process?
Excess air is supplied to ensure that complete combustion has occurred,
Excess air absorbs heat which it carries off through the venting system,
reducing the appliance's operating efficiency.
Excess air is supplied at a draft control device to cool the hot vent gases.
d) Excess air does not chemically react with the fuel gas.
08



Answer :

Final answer:

Excess air in the combustion process ensures complete combustion and reacts chemically with the fuel gas.


Explanation:

Excess air in the combustion process:

  1. Excess air is supplied to ensure complete combustion.
  2. Excess air does absorb heat but does not carry it off through the venting system.
  3. Excess air is supplied at a draft control device to reduce the temperature of the hot vent gases.
  4. Excess air does chemically react with the fuel gas.

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