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3 Voltage and current

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Voltage and current As was previously mentioned, we need more than just a continuous path (circuit) before a continuous flow of electrons will occur: we also need some means to push these electrons around the circuit. Just like marbles in a tube or water in a pipe, it takes some kind of influencing force to initiate flow. With electrons, this force is the same force at work in static electricity: the force produced by an imbalance of electric charge. If we take the examples of wax and wool which have been rubbed together, we find that the surplus of electrons in the wax (negative charge) and the deficit of electrons in the wool (positive charge) creates an imbalance of charge between them. This imbalance manifests itself as an attractive force between the two objects:   If a conductive wire is placed between the charged wax and wool, electrons will flow through it, as some of the excess electrons in the wax rush through the wire to get back to the wool, filling the deficien...
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Cooling Tower Efficiency

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How To Calculate Efficiency Of Cooling Tower Practically Efficiency of cooling Tower is in range of 70-75% and we cannot cool below wet bulb temperature using cooling Tower which is. Before Understanding the efficiency we need to understand the following parameters related to cooling Tower  1) Inlet Temperature  2) Outlet Temperature  3) Wet Bulb Temperature   4) Range   5) Approach  1) Inlet Temprature :- Is the Temprature of water required cooling entering to the cooling Tower.   2) Outlet Temprature:- Is the Temperature of chilled water cooled by the cooling Tower i.e. The average cooling tower sump water temperature.  3) Wet Bulb Temprature:- Is the Temperature of thermometer with its wick dipped in wet cotton swab.   4) Range:- Is the difference between Inlet - Outlet Temprature.   5) Approach:- Outlet Temprature - WBT( Wet Bulb Temprature)  Cooling Tower Efficiency can be calculated by using formula ...
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