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The following diagrams show how a pellet stove and a pellet boiler work to heat a house. Summarize1 the information by selecting and reporting the main features, and make comparisons where relevant.

The given pictures describe the operation methods of two heating systems, namely a pellet stove and a pellet boiler, to heat up a house. In general, it is evident that a pellet stove is used for generating a hot air circulation system while a pellet boiler is used for producing hot water in a house. Moreover, wood pellets are used for both a pellet stove and a pellet boiler as basic material to produce the heat. As depicted in the first picture, to generate hot air using a pellet stove is started by feeding wood pellets into the fuel hopper. Then, the wood pellet is carried onto the combustion chamber through the fuel feed. In this room, wood pellets are burned to produce hot air. Furthermore, the hot air from the firing is flowed to a combustion fan, while the remaining exhaust gasses are extruded from the rear panel and end up in the exhaust duct. Finally, ash as a waste for the combustion process is contained in an ash pan. Regarding the pellet boiler, in the first place, wood pellets are put into the furnace. In this furnace, there is a burning process of wood pellets that produces heat energy. Next, cold water is streamed across this furnace. Because of the heat, the cold water turns into hot water which is streamed throughout the house. Eventually, the combustion residue in the form of smoke is flown out of the house through the smokestack, while the burning ash is collected in the ash receptacle.
The
This phrase/word (depending on the context) can be potentially replaced with :
given
pictures
This phrase/word (depending on the context) can be potentially replaced with :
describe
the operation methods of two heating systems,
namely
a
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pellet
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stove
and a
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pellet
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boiler
, to heat up a
This phrase/word (depending on the context) can be potentially replaced with :
house
.

In general
, it is evident that a
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pellet
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stove
is
This phrase/word (depending on the context) can be potentially replaced with :
used
for generating a hot
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air
circulation system while a
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pellet
You use this word too often, consider replacing it with
boiler
is
This phrase/word (depending on the context) can be potentially replaced with :
used
for producing hot
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water
in a
This phrase/word (depending on the context) can be potentially replaced with :
house
.
Moreover
,
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wood
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pellets
are
This phrase/word (depending on the context) can be potentially replaced with :
used
for both a
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pellet
You use this word too often, consider replacing it with
stove
and a
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pellet
You use this word too often, consider replacing it with
boiler
as basic material to produce the heat.

As depicted in the
first
picture, to generate hot
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air
using a
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pellet
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stove
is
This phrase/word (depending on the context) can be potentially replaced with :
started
by feeding
You use this word too often, consider replacing it with
wood
You use this word too often, consider replacing it with
pellets
into the fuel hopper. Then, the
You use this word too often, consider replacing it with
wood
You use this word too often, consider replacing it with
pellet
is carried
onto the
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combustion
chamber through the fuel feed. In this room,
You use this word too often, consider replacing it with
wood
You use this word too often, consider replacing it with
pellets
are burned
to produce hot
You use this word too often, consider replacing it with
air
.
Furthermore
, the hot
You use this word too often, consider replacing it with
air
from the firing
is flowed
to a
You use this word too often, consider replacing it with
combustion
fan, while the remaining exhaust gasses
are extruded
from the rear panel and
This phrase/word (depending on the context) can be potentially replaced with :
end
up in the exhaust duct.
Finally
, ash as a waste for the
You use this word too often, consider replacing it with
combustion
process
is contained
in an ash pan.

Regarding the
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pellet
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boiler
, in the
first
place,
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wood
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pellets
are put
into the furnace. In this furnace, there is a burning process of
You use this word too often, consider replacing it with
wood
You use this word too often, consider replacing it with
pellets
that produces heat energy.
Next
,
This phrase/word (depending on the context) can be potentially replaced with :
cold
You use this word too often, consider replacing it with
water
is streamed
across this furnace.
This phrase/word is too simple and can be replaced with:
Because
of the heat, the
This phrase/word (depending on the context) can be potentially replaced with :
cold
You use this word too often, consider replacing it with
water
turns into hot
You use this word too often, consider replacing it with
water
which
is streamed
throughout the
This phrase/word (depending on the context) can be potentially replaced with :
house
.
Eventually
, the
You use this word too often, consider replacing it with
combustion
residue in the form of smoke
is flown
out of the
This phrase/word (depending on the context) can be potentially replaced with :
house
through the smokestack, while the burning ash
is collected
in the ash receptacle.
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IELTS academic The following diagrams show how a pellet stove and a pellet boiler work to heat a house. Summarize1 the information by selecting and reporting the main features, and make comparisons where relevant.

Academic
  American English
4 paragraphs
254 words
6.5
Overall Band Score
Coherence and Cohesion: 7.0
  • Structure your answers in logical paragraphs
  • ?
    One main idea per paragraph
  • ?
    Include an introduction and conclusion
  • ?
    Support main points with an explanation and then an example
  • Use cohesive linking words accurately and appropriately
  • ?
    Vary your linking phrases using synonyms
Lexical Resource: 5.5
  • Try to vary your vocabulary using accurate synonyms
  • Use less common question specific words that accurately convey meaning
  • Check your work for spelling and word formation mistakes
Grammatical Range: 6.5
  • Use a variety of complex and simple sentences
  • Check your writing for errors
Task Achievement: 7.0
  • Answer all parts of the question
  • ?
    Present relevant ideas
  • Fully explain these ideas
  • ?
    Support ideas with relevant, specific examples
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  • The following diagrams show how a pellet stove and a pellet boiler work to heat a house. Summarize1 the information by selecting and reporting the main features, and make comparisons where relevant.