Chilled Beams For Cooling Buildings
I assume from a very interesting article in the November, 2008 issue of Architectural Record. In this entry, I will provide a abridgement from this article of many of the points that I feel offer a substantial energy savings, as well as occupant comfort level advance advantage to any project. The full text may be found on pages 183-190.
In Europe and Australia, the use of chilled beams for cooling has seen lucky use for over a decade. This can avoid the use of separate duct work and minimize mechanical system size, as well as produce increased levels of abundance and health for the building's occupants, while saving energy, and often, first-cost expense
These beams are not actual structural beams, but rather a part of a ceiling mounted edifice that can provide cooling and sometimes even heating. They often resemble fluorescent light fixtures, and carry chilled pee rather than chilled air. By carrying chilled water versus air, they are more energy efficient, due to the fact that less energy is needed to around water, than is needed to run an air handler in a conventional ducted air conditioning system. There are also fewer moving parts to irritate out, thus reducing the need for regular servicing.
There are two types - Passive Chilled Beams and Active Chilled Beams. In the quiet form, no fan is used to circulate surrounding air from the area of the beam, while the active form uses a fan to move air around the beam and out into the circumambient area. The passive type will work well in a building with lower cooling load requirements, while an on the go system will be better suited for a larger load requirement.
In the case of the passive beams, the cooling is provided by convection, as opposed to emission, which have been used in walls and floors. The passive system is virtually silent as no fans are used, and are made up of coil to which aluminum fins are spoken for to copper tubing, in which...
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