The diagram below shows how a central heating system in a house works.
The diagram illustrates the operation of a central heating system in a house.
Overall, the heating system uses mainly a boiler, a pump and water which is heated and circulated throughout the pipe.
First, cold water is filled in the water tank of the house. Following this, the water transfers the water to the storage tank with the use of an overflow pipe. Then, the boiler uses gas or oil to boil and heat the water supplied from the storage tank. After the water is boiled, the hot water is pumped throughout the hot water radiators and small tubes which then warms the temperature of rooms.
Once, the hot water has been through pipes and radiators, it is then returned back to the boiler which again boils the water. In addition, the hot water is also transferred into some taps located in the house.
Grammar and spelling errors:
Line 7, column 70, Rule ID: RETURN_BACK[1]
Message: Use simply 'returned'.
Suggestion: returned
...through pipes and radiators, it is then returned back to the boiler which again boils the wat...
^^^^^^^^^^^^^
Transition Words or Phrases used:
also, first, so, then, in addition
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 7.0 7.0 100% => OK
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 6.0 6.8 88% => OK
Relative clauses : 3.0 3.15609756098 95% => OK
Pronoun: 2.0 5.60731707317 36% => OK
Preposition: 18.0 33.7804878049 53% => More preposition wanted.
Nominalization: 2.0 3.97073170732 50% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 674.0 965.302439024 70% => OK
No of words: 144.0 196.424390244 73% => More content wanted.
Chars per words: 4.68055555556 4.92477711251 95% => OK
Fourth root words length: 3.46410161514 3.73543355544 93% => OK
Word Length SD: 2.28977194401 2.65546596893 86% => OK
Unique words: 77.0 106.607317073 72% => More unique words wanted.
Unique words percentage: 0.534722222222 0.547539520022 98% => OK
syllable_count: 202.5 283.868780488 71% => OK
avg_syllables_per_word: 1.4 1.45097560976 96% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 1.53170731707 65% => OK
Article: 8.0 4.33902439024 184% => OK
Subordination: 1.0 1.07073170732 93% => OK
Conjunction: 0.0 0.482926829268 0% => OK
Preposition: 2.0 3.36585365854 59% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 8.0 8.94146341463 89% => OK
Sentence length: 18.0 22.4926829268 80% => The Avg. Sentence Length is relatively short.
Sentence length SD: 26.1342686907 43.030603864 61% => OK
Chars per sentence: 84.25 112.824112599 75% => OK
Words per sentence: 18.0 22.9334400587 78% => OK
Discourse Markers: 4.25 5.23603664747 81% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 1.0 1.69756097561 59% => OK
Sentences with positive sentiment : 1.0 3.70975609756 27% => More positive sentences wanted.
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 7.0 4.09268292683 171% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0893992501248 0.215688989381 41% => OK
Sentence topic coherence: 0.0679451104161 0.103423049105 66% => OK
Sentence topic coherence SD: 0.114465856803 0.0843802449381 136% => OK
Paragraph topic coherence: 0.127100600658 0.15604864568 81% => OK
Paragraph topic coherence SD: 0.136721834315 0.0819641961636 167% => OK
Essay readability:
automated_readability_index: 9.6 13.2329268293 73% => Automated_readability_index is low.
flesch_reading_ease: 70.13 61.2550243902 114% => OK
smog_index: 3.1 6.51609756098 48% => Smog_index is low.
flesch_kincaid_grade: 7.9 10.3012195122 77% => OK
coleman_liau_index: 9.57 11.4140731707 84% => OK
dale_chall_readability_score: 8.04 8.06136585366 100% => OK
difficult_words: 32.0 40.7170731707 79% => More difficult words wanted.
linsear_write_formula: 8.0 11.4329268293 70% => OK
gunning_fog: 9.2 10.9970731707 84% => OK
text_standard: 10.0 11.0658536585 90% => OK
What are above readability scores?
---------------------
More content wanted.
Minimum 150 words wanted.
Rates: 56.1797752809 out of 100
Scores by essay e-grader: 5.0 Out of 9
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.