VENTILATION

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• Q1: Define Ventilation.
  Ans: Ventilation is the process of supplying fresh air to a space and removing stale air to maintain air quality.
• Q2: Write the importance of Ventilation.
  Ans: Ventilation ensures proper airflow, removes harmful gases, and helps maintain comfort and health.
• Q3: Which factors affect ventilation?
  Ans: Factors that affect ventilation include:

  • ➔ Temperature
  • ➔ Humidity
  • ➔ Wind direction
  • ➔ Type of ventilation system used
• Q4: What is Cross-ventilation?
  Ans: Cross-ventilation is a method of airflow where fresh air enters through one side and exits through the other, cooling and refreshing a space.
• Q5: Define opening.
  Ans: An opening is a gap or space (like a window or door) used to allow air to enter or exit a room for ventilation.
• Q6: What is the ventilation process?
  Ans: Ventilation involves the movement of air to bring in fresh air and remove pollutants or hot air from a space.
• Q7: What are the types of ventilation?
  Ans: The different types of ventilation are:

  • ➔ Natural ventilation
  • ➔ Mechanical ventilation
  • ➔ Mixed-mode ventilation
• Q8: Define Natural Ventilation.
  Ans: Natural ventilation relies on air movement from natural forces like wind and temperature differences to circulate air.
• Q9: Define Mechanical Ventilation.
  Ans: Mechanical ventilation uses fans or mechanical systems to move air in and out of a building.
• Q10: Define Mix mode Ventilation.
  Ans: Mixed-mode ventilation combines both natural and mechanical methods to improve air quality and comfort.
• Q11: What are the important design considerations for ventilation?
  Ans: Important design considerations for ventilation include:

  • ➔ Airflow patterns
  • ➔ Air distribution
  • ➔ Humidity control
  • ➔ Temperature
  • ➔ Building layout
• Q12: How does the direction of wind affect ventilation?
  Ans: Wind direction can enhance or reduce airflow, affecting how efficiently air enters and exits a space.
• Q13: What is the purity of wind?
  Ans: The purity of wind refers to its cleanliness, which affects air quality. Purified air is free of pollutants.
• Q14: Define Humidity.
  Ans: Humidity is the amount of water vapor in the air, which can impact comfort and ventilation efficiency.
• Q15: How does humidity affect ventilation?
  Ans: High humidity can reduce air quality and comfort, while low humidity can dry out airways and materials.
• Q16: Name the types of Natural ventilation.
  Ans: The types of natural ventilation are:

  • ➔ Window ventilation
  • ➔ Stack ventilation
  • ➔ Cross-ventilation
• Q17: Name the methods of Mechanical ventilation.
  Ans: The methods of mechanical ventilation are:

  • ➔ Exhaust fans
  • ➔ Air handling units
  • ➔ Ducted systems
• Q18: Explain the Central Plant System.
  Ans: A central plant system provides heating, cooling, and ventilation from a single location to multiple parts of a building.
• Q19: How does chimney help in ventilation?
  Ans: Chimneys help ventilate by allowing smoke, heat, and gases to escape, creating a natural draft for air circulation.
• Q20: What is wind driven ventilation?
  Ans: Wind-driven ventilation uses natural wind to force air through a space, improving air exchange.
• Q21: Define Roshan Daan and its effects on ventilation.
  Ans: Roshan Daan is a traditional ventilation system that allows natural light and air to enter a building through small openings, improving air quality.
• Q22: Define Ventilators.
  Ans: Ventilators are devices used to circulate or supply air into a room or building, improving ventilation.
• Q23: What are some design considerations for openings in ventilation?
  Ans: Some of the considerations are:

  • ➔ Size
  • ➔ Placement
  • ➔ Type (window, vent, etc.)
  • ➔ Orientation to optimize airflow and comfort
• Q24: Define Infiltration.
  Ans: Infiltration is the uncontrolled movement of outdoor air into a building, typically through cracks or gaps in the structure.
• Q25: What are some effects of ventilation?
  Ans: Ventilation has the following effects:

  • ➔ Improves air quality
  • ➔ Reduces humidity
  • ➔ Prevents mold
  • ➔ Ensures comfort