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  2. EPANET - Wikipedia

    en.wikipedia.org/wiki/EPANET

    EPANET provides a fully equipped and extended period of hydraulic analysis that can handle systems of any size. The package also supports the simulation of spatially and temporally varying water demand, constant or variable speed pumps, and the minor head losses for bends and fittings.

  3. Base load - Wikipedia

    en.wikipedia.org/wiki/Base_load

    The base load [2] (also baseload) is the minimum level of demand on an electrical grid over a span of time, for example, one week. This demand can be met by unvarying power plants [ 3 ] or dispatchable generation , [ 4 ] depending on which approach has the best mix of cost, availability and reliability in any particular market.

  4. Load-following power plant - Wikipedia

    en.wikipedia.org/wiki/Load-following_power_plant

    A load-following power plant, regarded as producing mid-merit or mid-priced electricity, is a power plant that adjusts its power output as demand for electricity fluctuates throughout the day. [1] Load-following plants are typically in between base load and peaking power plants in efficiency, speed of start-up and shut-down, construction cost ...

  5. Unit demand - Wikipedia

    en.wikipedia.org/wiki/Unit_demand

    In economics, a unit demand agent is an agent who wants to buy a single item, which may be of one of different types. A typical example is a buyer who needs a new car. There are many different types of cars, but usually a buyer will choose only one of them, based on the quality and the

  6. Law of demand - Wikipedia

    en.wikipedia.org/wiki/Law_of_demand

    Another common way to express the law of demand without imposing a functional form is the following: [11] ( p ′ − p ) ( x ′ − x ) ≤ 0 {\displaystyle (p'-p)(x'-x)\leq 0} This formula states that, for all possible prices p' and p, and corresponding demands x' and x, prices and demand must move in opposite directions, i.e. as price ...

  7. Base stock model - Wikipedia

    en.wikipedia.org/wiki/Base_Stock_Model

    The base stock model is a statistical model in inventory theory. [1] In this model inventory is refilled one unit at a time and demand is random . If there is only one replenishment, then the problem can be solved with the newsvendor model .

  8. Base unit of measurement - Wikipedia

    en.wikipedia.org/wiki/Base_unit_of_measurement

    Unit prefixes are common base-10 or base-2 powers multiples and submultiples of units. While a base unit is one that has been explicitly so designated, [2] a derived unit is unit for a derived quantity, involving the combination of quantities with different units; [1] several SI derived units are specially named.

  9. Pipe network analysis - Wikipedia

    en.wikipedia.org/wiki/Pipe_network_analysis

    Given a starting node, we work our way around the loop in a clockwise fashion, as illustrated by Loop 1. We add up the head losses according to the Darcy–Weisbach equation for each pipe if Q is in the same direction as our loop like Q1, and subtract the head loss if the flow is in the reverse direction, like Q4.