Cooling tower (: Yang)
It is a heat sink, and the residual heat is extracted while the flow of water is cooled to a lower temperature. The type of heat in the cooling tower is called "evaporation, which makes a small portion of the water" is cooled to a flowing air stream to evaporate cooling to provide an important part of the water flow to rest. The flow of water from the transfer to the air stream increases the temperature and relative humidity of the hot air to 100%, which is vented to the atmosphere. Thermal evaporative cooling towers, such as rejecting equipment are typically used to provide a cooling system that achieves a more cost-effective and energy efficient operation than a "cold" or "dry" heat sink, such as in a car radiator, thereby significantly reducing system cooling. need. Think about what you see when the heat is quickly cooled down, put it, this water evaporates and cools quickly, such as overheated car radiators. Cooling potential on wet surfaces is far superior to dry ones.
Common applications for cooling towers are air cooling, air conditioning, production and power generation. The small cooling towers of Zui are designed to handle only a few gallons of water in a residential area that may see such a small pipeline supply, while thousands of gallons per minute for up to 15 feet of pipe, and a cooling of 100,000 Large power plant (about 5 meters in diameter).
The generic term "cooling tower" is used to describe direct (open circuit) and indirect (closed circuit television) cooling equipment. While most have come up with a "cooling tower as an open direct contact heat sink", an indirect cooling tower, sometimes referred to as a "closed circuit cooling tower", is also a cooling tower.
A direct, or open-circuit cooling tower is a means of sealing the interior of the structure to distribute warm water to feed it to the labyrinth package or to "fill it up." The fill provides a greatly expanded aviation, water evaporating to heat the air and the interface takes place. Cool the water as it is passed through by gravity and over it in direct contact with the air. The cooling water is then collected in a cold water basin below which it is pumped back from the entire process to absorb more heat. The heated and humid air is filled away from the fill discharge point to remotely control the atmosphere from the air inlet to prevent it from being caught in the cooling tower.
Filling may include multiple, mainly vertical, wet-surfaced water (film fill) or lateral splash elements that create a number of layers of thin film with large surface area cascading cascades (splash fill).
Indirect, or closed circuit cooling towers do not involve direct contact with air, liquid, usually water or glycol mixtures, and are cooled. The difference is the open cooling tower, which indirectly has two separate fluid circuits. One is that the water in the external circuit is on the second track, which is the outer loop of the tube bundle (non-public coil) connected to the hot fluid process is cooled and returned in closed loop. The air is drawn through a loop of water circulated throughout the heat pipe, providing a similar evaporative cooling tower to open. The heat flow in operation from the internal fluid circuit, through the coil tube wall, to the external circuit, and then by some evaporation of air and water to the atmosphere. The action of the indirect cooling tower is therefore very similar, with an exception to the cooling tower. This process is carried out by a coolant in a "closed" circuit that is not directly exposed to circulating water in the atmosphere or outside.
In the counterflow cooling tower, the air travels upward through the filling or tube bundle, and the opposite water moves downward. The cross-flow cooling tower air moves horizontally by filling the water down.
The cooling tower also has a feature in which aviation moves. The mechanical ventilation cooling tower relies on an electrically driven fan to attract or force the tower air. The high growth of the exhaust stack used by the naturally ventilated cooling tower provides a draft of the air buoyancy. The fan-assisted natural draft cooling tower uses a mechanical draft to increase the impact of buoyancy. Many early cooling towers rely on the wind to produce a draft of the air.
If the cooling water is returned to the reuse from the cooling tower, some of the water must be added to the replacement or composition, and the portion of the flow evaporates. Since evaporation includes pure water, the concentration of dissolved minerals and other solid circulating water tends to increase unless some dissolution, such as the means of combating solids, is provided. Some water is also lost with the exhaust (drift) droplets that are being carried out, but this is usually reduced to a very small amount of installed baffle-like devices called drifting to remove droplets. The amount of compensation must be equal to evaporation, blowing down, total drift, such as wind blowouts and other water leakage losses, to maintain a stable water level.
Some useful terms are commonly used in the cooling tower industry:
Drift - Water is being sprayed with an exhaust gas cooling tower. The drift droplets have the same concentration of impurities as entering the tower water. The drift speed is usually reduced by a baffle-like device, so-called drifting, which must leave the fill and tower spray area after traveling through the air.
Blowout - a blown air cooling tower, water droplets, generally open at the air inlet. Water can also be lost, in the case of wind, by splashing or spraying. For example, air curtains, louvers, splash deflection and moisture flow adjustment devices limit these losses.
Smoke plume - The saturated stream leaves the exhaust gas cooling tower. The plume is visible when water vapor is contained, and it contains a cool air contact condensation, which is like a saturated air in a person's breathing fog on a cold day. In some cases, cooling tower feathers may spray or freeze the hazards and surrounding areas. Please note that the evaporative cooling process of water is "pure" water, on the contrary is the drift of the droplets or the proportion of water is very small in the blowing inlet.
Blowing - The circulating water flow is removed to maintain an acceptable level of dissolved solids and other impurities in the amount.
The leaching - loss of wood preservative chemicals by rinsing the water through a wooden structure cooling tower.
Noise - The sound energy is cooled by the cooling tower and listened to (recorded) at a given distance and direction. The sound is the effect on the water that is degraded by the movement of the fans, the movement in the fan blade structure, the motor, the gearbox and the drive belt.
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