Process Diagram

Band 7+: The diagram provides an overview of a domestic central heating system. Summarise

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Image for topic: The diagram provides an overview of a domestic central heating system. Summarise

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The image features a schematic diagram of a house illustrating a central heating and water system, with components and directional flow paths labeled. At the top under the roof, an incoming pipe labeled "Cold water into house" feeds into a "Water tank to fill storage tank", which connects to an "Overflow pipe". A pipe from this upper tank leads down to a cylindrical "Storage tank" on the middle level, which in turn supplies a lower fixture via a pipe marked "Hot water to taps". On the ground floor, a "Boiler (gas or oil)" is connected to a "Pump", circulating water through a piping network labeled "Hot water radiators" that connects via "Small tubes" to radiator panels situated on both the ground and upper floors, with the return line labeled "Cold water" flowing back toward the pump and boiler.

Given the complexity of the image, the above description may not be entirely accurate.

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Note: Both the topic and the answer were created by one of our users.

This diagram provides an overview of a domestic central heating system. It shows how the tank, boiler and pipes ensure a constant flow of hot water to both the radiators and the taps.

The cold water enters the house and is stored in a water storage tank in the roof. Then the water flows down through pipes into the boiler. The boiler runs on gas and makes water hot. After that, a pump pushes the hot water around the house. The hot water goes to the radiators in different rooms. Small tubes carry the water to make the house warm. Next, the hot water also goes into a storage tank. From this tank, hot water flows directly to the taps in the bathroom and kitchen.

In conclusion, this is a closed system. It constantly moves water through pipes, boilers, and radiators to keep the house warm and supply hot water

Word Count: 150

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Overall Band Score

7.5

(+/- 0.5)

Vocabulary Complexity:
A2 - Upper Beginner
Consider using more varied and advanced words.

Grammar Mistakes: N/A

Vocabulary Repetition:

water: 12

house: 4

boiler: 3

pipes: 3

radiators: 3

Try using synonyms for the above words

Task Response

The report provides a clear and logical overview of the central heating system, covering the main components and flow of water. It appropriately addresses the task and includes a conclusion. However, there are a few minor inaccuracies and omissions: the cold water is described as flowing directly into the boiler, whereas the visual description indicates it first goes to a storage tank before being heated; the role of the overflow pipe is not mentioned; and the return of cooled water to the boiler is not described. These are minor lapses that do not detract significantly from the overall response.

Coherence & Cohesion

The report is logically organized and easy to follow, with a clear introduction, body, and conclusion. The sequence of the process is presented in a coherent manner. However, the use of cohesive devices is somewhat basic (e.g., 'Then', 'After that', 'Next'), and the paragraphing could be more skillfully managed to enhance flow. Consider using a wider range of linking words and phrases to improve cohesion.

Lexical Resource

The vocabulary used is appropriate and generally accurate, with some good use of technical terms (e.g., 'storage tank', 'radiators', 'boiler'). However, the range is somewhat limited, and there is some repetition (e.g., 'hot water' appears frequently). To achieve a higher score, try to use more varied and sophisticated vocabulary, such as 'circulates', 'distributes', 'heating system components', and avoid repetition by using synonyms or paraphrasing. Boost vocabulary complexity to elevate the overall score.

Grammatical Range & Accuracy

The grammar is largely accurate, with a good mix of simple and complex sentences. The report demonstrates control over a range of structures, including passive voice and conditional forms. There are no significant errors, and punctuation is used correctly. To reach a band 9, you could incorporate more complex structures, such as relative clauses or participle phrases, to add variety and sophistication.

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