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A plastic magnet is a non-metallic magnet made from an organic polymer. Plastic magnets could be used in computer hardware such as disc drives , as well as in medical devices such as pacemakers and cochlear implants , where the organic material is more likely to be biocompatible than its metallic counterparts.
Ceiling fans can be controlled together in a shared space, and can also be individually controlled in a home or office setting. In an office environment, individually controlled ceiling fans can have a significant positive impact on thermal comfort, which has been shown to increase productivity and satisfaction among occupants. [6]
Spaces where space contamination is normal, or similar to an office environment: Conference rooms, lobbies 0.12 cfm/ft 2: 0.60 L/s/m 2: Spaces where space contamination is significantly higher than an office environment: Classrooms, museums 0.18 cfm/ft 2: 0.90 L/s/m 2: Spaces where space contamination is even higher than the previous category
[4] [5] In contrast, returns (grilled ducts which suck air back into the HVAC system for heating or cooling) are usually placed in the wall or ceiling nearest the center of the building. Generally, in rooms where it is critical to maintain a constant temperature two registers (one placed near the ceiling to deliver cold air, and one placed in ...
Rooftop HVAC unit with view of fresh-air intake vent Ventilation duct with outlet diffuser vent. These are installed throughout a building to move air in or out of rooms. In the middle is a damper to open and close the vent to allow more or less air to enter the space. The control circuit in a household HVAC installation.
In most cases, only the working surface at the bottom of the enclosed space is made from a liner material, which is most frequently built from epoxy resin or stainless steel, [23] but a fume hood may be lined with any of the following materials: [11] Phenolic resin; Fiber-reinforced plastic; Polypropylene;