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The stack effect or chimney effect is the movement of air into and out of buildings through unsealed openings, chimneys, flue-gas stacks, or other purposefully designed openings or containers, resulting from air buoyancy. Buoyancy occurs due to a difference in indoor-to-outdoor air density resulting from temperature and moisture differences ...
By integrating the attic space with a solar chimney, the hot air in the attic can be put to work. It can help the convection in the chimney, improving ventilation. [4] The use of a solar chimney may benefit natural ventilation and passive cooling strategies of buildings thus help reduce energy use, CO 2 emissions and pollution in general ...
The pitch of a cricket is sometimes the same as the rest of the roof, but not always. For Steep-slope roofs, it is most common to have the cricket pitch to be equal to or less than the main roof, however for low-slope or flat roofs, it is more common to see the cricket be at least 50% greater slope than the roof, to minimize ponding.
A chimney cowl or wind directional cap is a helmet-shaped chimney cap that rotates to align with the wind and prevent a downdraft of smoke and wind down the chimney. An H-style cap is a chimney top constructed from chimney pipes shaped like the letter H. It is an age-old method of regulating draft in situations where prevailing winds or ...
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A tall exhaust chimney is constructed in the centre. Half or more of the trench is filled with "green" (unfired) bricks which are stacked in an open lattice pattern to allow airflow. The lattice is capped with a roofing layer of finished brick. In operation, new green bricks, along with roofing bricks, are stacked at one end of the brick pile.
Transpired collectors can also be roof mounted for year-round use and can raise the incoming air temperature up to 22 °C (72 °F) and deliver outlet temperatures of 45-60 °C (110° to 140 °F). The short payback period of transpired collectors (3 to 12 years) make them a more cost-effective alternative to glazed collection systems.
Vivian Health examines five trends that could redefine nurses' roles, enhance patient care, and alter the entire healthcare system in 2025 and beyond.
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