The following diagrams show how pallet stove and boiler stove work to heat a house.

The two process diagrams illustrate two ways of heating up the house, by pallet stove and by pallet boiler. When the palace stove is used, the first step involves throwing wooden pallets into the fuel hopper, which has a control box attached to it.
Next,
wooden pallets travel down to the fuel feed which lights up the fire.in the combustion chamber.
After
this
, hot air travels up and is released through the combustion fun. Exhaust dust is released through the rear panel and ashes from the fire fall in the ash pan. The palette boiler the other hand
,
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needs cold
water
as well with the fire pellets to heat up the house. The process starts when cold
water
travels up to the furnace .At the same
time
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,time
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wooden pallets are thrown into the fuel hopper. After that, they are moved to the furnace.
This
causes
water
to heat up and
water
then
travels up the pipes.The first radiator to be heated up is usually the closest to the boiler on the ground floor.Second-floor radiators ,
however
, require more time to heat .
Submitted by  Niamh Gal on

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Vocabulary: Replace the words water with synonyms.
Vocabulary: Rephrase the word "undefined" in your introduction.
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