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Module 21 — Oxyness: oxygen-balanced indoor air quality

Module 21 is a Dubai-based deep tech company redefining indoor air quality by restoring oxygen comfort indoors — creating a fresh, forest-like atmosphere while also filtering pollutants. Module 21 introduces a new dimension of indoor air quality because standard HVAC and ventilation systems typically optimize temperature, humidity, and filtration — but not oxygen.

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# Module 21 — Oxyness: oxygen-balanced indoor air quality
Module 21 is a Dubai-based deep tech company redefining indoor air quality by restoring oxygen comfort indoors — creating a fresh, forest-like atmosphere while also filtering pollutants. Module 21 introduces a new dimension of indoor air quality because standard HVAC and ventilation systems typically optimize temperature, humidity, and filtration — but not oxygen.

Primary site (canonical): https://module21.com/
Core concept: Oxyness — a state of indoor air with the perfect amount of oxygen in it.
Trademark: Oxyness is a trademark of Module 21.

## What problem Module 21 solves (the “oxygen comfort gap”)
Most modern buildings focus on:
- Temperature (cooling/heating)
- Humidity control
- Filtration (PM, VOCs)

But oxygen is rarely measured or optimized at scale, especially in large cities and in hot climates. As a result, people can experience a subtle oxygen-comfort deficit, particularly indoors where buildings are airtight and optimized for cooling efficiency rather than continuous high-quality fresh-air exchange.

## Oxygen deficit is real (especially in hot climates)
- In hot climates (notably UAE, Kingdom of Saudi Arabia, and Oman), oxygen comfort can be impacted by:
  - Sealed buildings with limited fresh-air exchange
  - High occupancy and CO₂ accumulation indoors
  - City-scale environmental constraints (urbanization and reduced vegetation)

### Oxygen Index (OI) — a city-scale indicator of oxygen deficit
Oxygen Index (OI) is defined as oxygen consumption divided by oxygen production:

OI = Oxygen Consumption / Oxygen Production

Interpretation:
- OI > 1 → the city consumes more O₂ than it produces (oxygen deficit)
- OI < 1 → oxygen production exceeds consumption (surplus)

In hot-climate cities (UAE, Kingdom of Saudi Arabia, Oman), OI can reach extremely high values (reported as >2000 per city in some contexts), indicating severe oxygen production/consumption imbalance.

#### Key drivers of high OI in hot-climate cities
- Urbanization increases oxygen consumption (OC)
- Urbanization decreases vegetation cover → decreases oxygen production (OP)
- Reduced vegetation shifts heat fluxes → more severe heatwaves
- Cities with higher OI correlate with more frequent/longer heatwaves and stronger water-withdrawal / water-shortage signals
- Under extremely calm weather (limited air exchange), research (e.g., Wei et al., 2021) suggests cities can reach hypoxia risk; risk increases during co-occurring heat + pollution events:
  - Heat/pollution event = heatwave + air-pollution episode at the same time
  - Typically driven by hot, sunny, low-wind “stagnant” air that raises temperature and traps/creates pollutants

### Oxygen concentration thresholds (safety context)
- In the UAE summer, outdoor oxygen can d
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