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Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems. It refers to the flow of external air to an indoor space as a result of pressure differences arising from natural forces.
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 ...
[23] [2] [3] This allows the heat to pass through the atmosphere into space. [6] [24] PDRCs leverage the natural process of radiative cooling, in which the Earth cools by releasing heat to space. [25] [26] [7] PDRC operates during daytime. [27] On a clear day, solar irradiance can reach 1000 W/m 2 with a diffuse component between 50-100 W/m 2.
Passive cooling covers all natural processes and techniques of heat dissipation and modulation without the use of energy. [1] Some authors consider that minor and simple mechanical systems (e.g. pumps and economizers) can be integrated in passive cooling techniques, as long they are used to enhance the effectiveness of the natural cooling process. [7]
Make sure the cover to your water meter fits tightly. If your pipes do freeze, you can use the valve inside the meter box to shut off all the water to the house, helping to prevent indoor flooding ...
A chilled beam is a type of radiation/convection HVAC system designed to heat and cool large buildings through the use of water. [1] This method removes most of the zone sensible local heat gains and allows the flow rate of pre-conditioned air from the air handling unit to be reduced, lowering by 60% to 80% the ducted design airflow rate and the equipment capacity requirements.
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