Search results
Results from the WOW.Com Content Network
In programming languages and computational software packages, the absolute value of is generally represented by abs(x), or a similar expression. The vertical bar notation also appears in a number of other mathematical contexts: for example, when applied to a set, it denotes its cardinality ; when applied to a matrix , it denotes its determinant .
The second category of furnace is the forced-air having atmospheric burner style with a cast-iron or sectional steel heat exchanger. Through the 1950s and 1960s, this style of furnace was used to replace the big, natural draft systems, and was sometimes installed on the existing gravity duct work.
While overhead systems typically use ducts to distribute the air, UFAD systems use the underfloor plenum formed by installation of a raised floor. The plenum generally sits 0.3 and 0.46 metres (12 and 18 in) above the structural concrete slab, although lower heights are possible.
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.
There are so many enduring symbols of Christmas: the trimmed tree, stockings hung by the chimney with care, and of course, jolly Ol' Saint Nick.But for Ree Drummond, there's one Christmas ...
The perfect scenario for how Cleveland Browns defensive end Myles Garrett sees Week 18 unfolding is simple: A Browns win over the Baltimore Ravens on Saturday afternoon followed by a Pittsburgh ...
You can sign up for your free 30-day trial here. (And by the way, those without Prime still get free shipping on orders of $35 or more.)
The floor of the furnace is mostly made of a different material from that of the wall, typically hard castable refractory to allow technicians to walk on its floor during maintenance. A furnace can be lit by a small pilot flame or in some older models, by hand. Most pilot flames nowadays are lit by an ignition transformer (much like a car's ...