Untitled Quiz

Using evaporation to cool indoor spaces, often through transpiration of plants or evaporation inside courtyards.

In building design, using differences in air temperature to create layers of cooler air near the ground.

Cooling of buildings by direct contact with materials that absorb and release heat.

Openings in the upper part of the building to allow escape of hot air.

Courtyards/atriums offer shade, block hot wind, and improve natural ventilation

The Pantheon, in Rome, demonstrates using an oculus (opening) to let light in while releasing hot air.

Thick layers of earth or stone used to regulate temperature variations.

Best approach in hot/dry climates for building design. Minimizing daytime ventilation.

A cooling technique that brings in outdoor air, both day and night, to cool people.

Ventilation technique that can be used at night to cool areas that are too humid.

Laminar, separated, turbulent, and eddy currents are the 4 basic types of airflow.

Air enters a building through earth tubes.

Air flows due to temperature differences (natural convection) or pressure differences;

Removing moisture from the air using a desiccant.

Air being sucked away from a side of a building.

Using the environment to cool a building (e.g., earth tubes).

The imaginary horizontal line within a space where air pressure is neutral, separating areas of positive and negative pressure.

The natural phenomenon where warmer, less dense air rises, creating a pressure difference that pulls air in at lower levels and pushes air out at higher levels.

Air pressure higher than the surrounding atmosphere, causing air to be pushed out.

In multi-story buildings, the stack effect can draw hot air upwards into the upper floors if the neutral axis is low. To prevent this, the neutral axis needs to be raised by increasing the atrium height, using wind, and/or exhaust fans.

Wind blowing across a building can create negative pressure on the windward side, pulling air out. This enhances the stack effect.

The dominant direction of wind in a particular location, crucial for building design to take advantage of the stack effect efficiently.

The direction a building faces, which should be aligned with the prevailing wind direction to maximize the benefits of the stack effect.

Using the stack effect to exhaust hot air from a building. It works best when the indoor temperature difference between top and bottom openings is higher than the outdoor difference.

To increase the effectiveness of the stack effect, openings should be as large and as far apart vertically as possible. Obstructions should be minimized to allow free airflow.

As air velocity increases, its static pressure decreases. This means there's less pressure at roof level than at ground level.

The difference in temperature between the inside and outside of a building. It dictates the strength of the stack effect.

Openings in a building's walls or roof that are positioned vertically. These are crucial for stack effect ventilation.

Anything that hinders the flow of air in a building, like furniture, walls or poorly designed openings, can reduce stack effect effectiveness.

A building designed with adjustable louvers and large vertical openings to maximize the stack effect and passive ventilation.

In tall buildings, windows placed high on walls may be difficult to reach for manual operation. Mechanical devices like linkages or electric motors are often used to open and close these windows.

Windows with adjustable horizontal slats that allow for airflow control while blocking rain.

Opaque panels that can be adjusted to control airflow and light, often used in shutters.

The size of openings for ventilation should be roughly equal to ensure balanced airflow. The smaller opening will determine the overall ventilation rate.

The direction of airflow can be altered by building features, such as windows. Inclined windows can deflect wind upward, potentially creating discomfort for occupants.

Ventilation aims to regulate air quality and temperature inside buildings by providing fresh air and removing stale or hot air.

A physical model used to simulate airflow in buildings. It uses water flow to represent wind, allowing designers to visualize how air moves through a structure.

A technique used in the water table apparatus to track the flow of water, representing air movement in a building.

The speed of air movement influences how comfortable we feel, affecting the perceived temperature. Higher velocities can make us feel cooler.

Using a three-dimensional representation of a building to evaluate airflow patterns, typically a smaller scale model.

The ability to see how air moves through a building, usually through techniques like dye tracing or smoke tests.

Using a familiar system, like water flow, to represent a more complex system like airflow, aiding in understanding and analysis.