Vital Chemicals for Cooling Towers

Written by Thomas Yoon

Cooling towers are used to cool down hot condenser water taken from chillers of air conditioning systems. The cooling effect of cooling towers are attributed torepparttar evaporation ofrepparttar 133415 water when it is blown through by air fromrepparttar 133416 fans.

After some time of circulating throughrepparttar 133417 cooling towers,repparttar 133418 water becomes more and more concentrated withrepparttar 133419 dissolved salts inrepparttar 133420 water. The concentrated water has to be drained off and fresh new water added intorepparttar 133421 system to make it less saline.

However, when fresh water is added, it will not have any passivation chemicals to protectrepparttar 133422 piping andrepparttar 133423 component condenser parts from corrosion. So chemicals are added to protectrepparttar 133424 piping andrepparttar 133425 machinery.

For cooling tower water,repparttar 133426 chemical used serve 2 basic functions - a corrosion inhibitor and a biocide.

The corrosion inhibitor is for preventing corrosion inrepparttar 133427 piping andrepparttar 133428 related parts. The biocide is to prevent growth of algae, bacteria and other micro organisms.

Every water treatment chemical company has its own formula and special concortions. A typical corrosion inhibitor may contain about 1 - 10% Potassium Hydroxide or similar alkali. This is then further diluted when mixed withrepparttar 133429 water inrepparttar 133430 cooling tower. Being an alkali, it will neutralize any acids found in repparttar 133431 water that can cause corrosion to occur.

The cooling tower is installed outdoors. Withrepparttar 133432 ample warmth fromrepparttar 133433 chiller, fresh air and sunlight,repparttar 133434 water it contains is a very ideal medium forrepparttar 133435 growth of micro organism.

Just the Right Timing

Written by Thomas Yoon

How doesrepparttar engine know when to spray fuel, let in air, compressrepparttar 133414 air, and exhaustrepparttar 133415 spent combustion product?

Obviously, there must be a certain timing for these processes to follow in order forrepparttar 133416 diesel engine to work.

Ifrepparttar 133417 fuel were to be injected whenrepparttar 133418 air insiderepparttar 133419 cylinders is not sufficiently compressed, it will not ignite. Furthermore, ifrepparttar 133420 timing is not correct, some ofrepparttar 133421 unburned fuel may find their way out throughrepparttar 133422 exhaust and become lost.

Inefficient combustion takes place and power will be lost.

The many components of a diesel engine must work together properly, doing their function atrepparttar 133423 correct sequence allrepparttar 133424 time. If any component does not function as designed,repparttar 133425 engine will perform poorly or even stop completely.

The main moving components of a diesel engine, i.e.repparttar 133426 piston, connecting rod, crankshaft, fuel pump, exhaust valves and inlet valves are connected together through carefully designed gearing, cams, push rods, rocker arms, and sometimes drive chains.

Adjustingrepparttar 133427 timing ofrepparttar 133428 various processes of a diesel combustion cycle involves adjustments to these linkages.

In small diesel engines, very little adjustments can be done. However in large diesel engines, each of these components can be adjusted for maximum efficiency.

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