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ST. Claret School

Air Purifier and Air Cooling Machine

A school science project on clean, cool, and chemical-free indoor air.

Member
Abhirup Sadhu
Red House
Member
Nabadipta Mondal
Red House
Class
VI A
School Project

Project Idea

This project combines air purification and air cooling in one compact machine to make indoor air cleaner, fresher, and more comfortable.

What problem does it solve?

  • • Reduces dust, smoke, pollen, and bad smell.
  • • Helps people in hot and polluted surroundings.
  • • Supports healthier breathing indoors.

Main goal

To show how a simple machine can improve health, comfort, and environmental sustainability without using harmful chemicals.

How the Machine Works

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1. Air Intake
A fan draws polluted room air into the machine.
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2. Filtration
Filters remove dust, smoke, pollen, gases, and germs.
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3. Cooling
The purified air passes through an eco-friendly cooling section.
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4. Fresh Output
Clean and cool air is released back into the room.

Filtration Stages

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Pre-Filter

Stops larger particles like visible dust, hair, and lint before they reach the finer filters.

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HEPA Filter

Captures very small particles such as allergens, smoke particles, and many microorganisms.

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Activated Carbon

Absorbs bad odour and some harmful gases, making the air fresher and cleaner.

Why It Is Special

Chemical-Free Cooling

The idea focuses on cooling air in an eco-friendly way without adding harmful chemicals into the environment.

Two Functions in One

The same machine both cleans polluted air and cools it, which saves space and improves comfort.

Low Power and Low Noise

It is designed for continuous indoor use with minimal disturbance and better energy efficiency.

Easy Maintenance

The filters can be checked, cleaned, or replaced, keeping the machine practical for daily use.

Where It Can Be Used

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Homes
For bedrooms, study rooms, and family spaces.
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Classrooms
For better comfort and cleaner breathing in school.
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Offices
For staff comfort during warm and dusty days.
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Hospitals
Where clean air is especially important indoors.
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Libraries
For calm, low-noise, and comfortable reading spaces.
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Labs
Useful in indoor areas needing cleaner airflow.

Benefits of the Project

Health benefit: Helps reduce breathing problems caused by dust, smoke, and polluted indoor air.
Comfort benefit: Provides cool and refreshing air during hot weather.
Environmental benefit: Promotes an eco-friendly approach without using harmful chemicals.
Practical benefit: Compact design, easy upkeep, and useful in many types of rooms.

Future Improvement Ideas

Smart Features

  • • Air quality sensor
  • • Automatic temperature control
  • • Filter replacement indicator

Better Design

  • • Smaller portable body
  • • Solar power support
  • • Stronger cooling efficiency
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Thank You

This project shows that simple technology can create healthier, cleaner, and cooler indoor spaces for everyone.

Presented by
Abhirup Sadhu and Nabadipta Mondal • Red House • Class VI A
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