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2. Cost of electricity by source - Wikipedia

   en.wikipedia.org/wiki/Cost_of_electricity_by_source

   The levelized cost of electricity (LCOE) is a metric that attempts to compare the costs of different methods of electricity generation consistently. Though LCOE is often presented as the minimum constant price at which electricity must be sold to break even over the lifetime of the project, such a cost analysis requires assumptions about the value of various non-financial costs (environmental ...

3. Windcatcher - Wikipedia

   en.wikipedia.org/wiki/Windcatcher

   Short wood-and-matting right triangular prisms, with the vertical side left open and facing directly up or down wind (often one of each per building). This design works well in areas with strong low-level winds from a consistent direction.

4. Centrifugal fan - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_fan

   They are sturdy, quiet, reliable, and capable of operating over a wide range of conditions. [ 3 ] Centrifugal fans are, like axial fans, constant-volume devices, meaning that, at a constant fan speed, a centrifugal fan moves a relatively constant volume of air rather than a constant mass.

5. Ventilation (architecture) - Wikipedia

   en.wikipedia.org/wiki/Ventilation_(architecture)

   This can include water vapor control, lavatory effluent control, solvent vapors from industrial processes, and dust from wood- and metal-working machinery. Air can be exhausted through pressurized hoods or the use of fans and pressurizing a specific area. [35] A local exhaust system is composed of five basic parts:

6. Bentley Continental GT - Wikipedia

   en.wikipedia.org/wiki/Bentley_Continental_GT

   The Bentley Continental GT is a grand touring car manufactured and marketed by the British company Bentley Motors since 2003. A two-door coupé or convertible, it was the first new Bentley released after the company's acquisition by Volkswagen AG in 1998, and the first Bentley to employ mass production manufacturing techniques.

7. Control theory - Wikipedia

   en.wikipedia.org/wiki/Control_theory

   Optimal control is a particular control technique in which the control signal optimizes a certain "cost index": for example, in the case of a satellite, the jet thrusts needed to bring it to desired trajectory that consume the least amount of fuel. Two optimal control design methods have been widely used in industrial applications, as it has ...