United Heat Exchanger

SIDCO Industrial Estate, Coimbatore, Tamil Nadu

Fanless Cooling Towers is a design in which the flow is directed perpendicular to the water. The air continues through the fill and thus past the water flow into an open plenum volume. A fan forces the air out into the atmosphere. Air flow enters one or more vertical faces of the cooling tower. Water flows through the fill by gravity.

• Fanless Cooling Towers designs are popularly associated with nuclear power plants. The same kind of cooling towers are often used at large coal-fired power plants. Some instead cool their heat exchangers with lake, river or ocean water.

• Fanless Cooling Towers leaves its dissolved salts behind in the bulk of the water which has not been fanless, thus raising the salt concentration in the circulating cooling water.

• Fanless Cooling Towers absorbs heat from the hot process streams which need to be cooled or condensed, and the absorbed heat warms the circulating water.

FRP cooling towers are very economically operating Cooling Tower, Since there is no fan or electric motor, there is no huge operating or maintenance cost involved in this Cooling Tower and also in Energy efficiency point of view, this is the best Payback Cooling Tower when comparing with other models.

• Simply says, in Fan less Cooling Towers the Hot water will be sprayed in the top of the Cooling Tower with spray nozzles into small droplets like mists and the droplets are crossed with the atmospheric wind flow to get the water cooled.

This model Cooling Towers are water saving and pollution free, safety with environmental protection

• Method / Type :Sound free design.
• Fanless / Natural Draft :Since no fan, motor and gear box it is low noise Cooling Tower than any other low noise type Cooling Tower.
• Fan Motor Type :Since fan, motor and gear boxes are used, high noise and vibration.

• FRP cooling towers of other model cooling towers are due to Fan, Motor, Gear box and Drive shaft and its vibrations. Since these models of Cooling Towers are not having Fan, motor, Gear boxes, this equipment has no trouble-some of noise & vibration.

Counter Flow Cooling Tower

• The air flow is directly opposite to the water flow in counterflow.
• Gravity distributes the water through the nozzles uniformly across the fill material.
• Advantages of the counterflow design is Spray water distribution makes the tower more freeze-resistant.
• Disadvantages of the counterflow design is basically higher initial and long-term cost, and Difficult to use variable water flow, as spray characteristics may be negatively affected.

Timber Cooling Towers are useful for air conditioning plants, induction furnace, injection moulding machine, chemical plants, chilling plants, oxygen plants and also for steel industries, cement industries and chemical industries. These depends upon the site condition you can prepare the model of the tower. It can be used for which quantity of water-cooling by extending the size, then lengths by increasing the Standard Size Pressure treated wooden Frames. The woods used for manufacturing the Cooling Towers are completely seasoned chemically treated, lightwood. The Drift Eliminator, Fan duct, Splash bars and complete Structures are made out of the same wood.

• Timber Cooling Towers are nothing then water is cooled with natural atmospheric air traveling and the water is sprayed with the help of Spray nozzles.

• The common Timber type Cooling Towers required by all the major sector customers.
• These Cooling Towers are having mechanical Fan and the water is cooled with the help of mechanical Fan motor.
• Cooling towers provides better thermal performance, low drift loss suitable for the current water scarced world.

• The main advantage of Timber cooling towers are energy saving through these system.

RCC Construction also both in Cross Flow and Counter Flow design. The structure of Cooling Tower is complete with RCC, the tower life will be more than timber as well as FRP and higher capacities are available in multi cell construction.

United Cooling Towers offer a high quality RCC Cooling Towers which are used in various industries. Our RCC Cooling Towers have the following specifications:

• Type : Both Cross and Counter flow
• Fan Cylinder : RCC Construction
• Gear Box : Spiral Bevel type Gear.
• End wall Casing & Louver : RCC Construction.
• Drive Shaft : Tubular type single span drive shaft fitted with flexible coupling with bushes at both end. Drive shafts are made of MS with HDG / SS for special case.

• RCC cooling towers or cement prices are higher at a site to opt for cheaper natural draft cooling towers made of structural steel.

• RCC cooling tower is also used as a industrial chimney, thus saving the cost of a separate chimney structure and plants without flue gas purification, problem with corrosion may occur, due to reactions of raw flue gas with water to form acids.

Dry Cooling Towers are nothing but type radiator Cooling. All the heat Transfer areas can be easily approach, the periodical cleaning and maintenance will be very easy and also the replacement period is also more when comparing with other cooling Tower system. Oil/water is cooled by a single heat Exchanger system, cost energy cooling water and maintenance spent can be reduced, various hot media can be cooled simultaneously by the same fan using parts. The tubes are wounded with integral Aluminium or copper wire type fins for increasing the Heat Transfer areas. In this system the core area Heat Transfer area is cooled with a intake cooling Fan at the top with the help, TEFC Electric motor in counter flow method to maximize heat transfer efficiency. The hot media primary will be circulated inside the tubes and the atmospheric air is used as the secondary media to cool the primary media.

• Dry Cooling Tower is one of the latest model Cooling Tower. Dry Cooling Tower is specially designed with copper or aluminium finned tube to increase the heat transfer area & these towers are particularly designed for water areas.

• Process Engine water or oil is directly taken from the system to Dry Cooling Tower. So the mid-Heat Exchanger is not required.
• Advantages :
  • Dry Cooling Tower is functioning with Air cooling Technology, there is no needs of excess water evaporative and make up is required to operate the cooling Tower.

Cross flow gravity distributes the water through the nozzles uniformly across the fill material. Cross flow is a design in which the air flow is directed perpendicular to the water flow Air flow enters one or more vertical faces of the cooling tower to meet the fill material. Cross flow of air continues through the fill and thus past the water flow into an open plenum volume. Water flows through the fill by gravity. A distribution or hot water basin consisting of a deep pan with holes or nozzles in its bottom is located near the top of a cross flow tower.

• Water distribution allows smaller pumps and Non-pressurized spray simplifies variable flow.
• Lower initial and long-term cost, mostly due to pump requirements.

Square Shaped Cooling Tower[/caption]Square shape cooling tower is a design in which the air flow is directed perpendicular to the water flow (see diagram below). Air flow enters one or more vertical faces of the cooling tower to meet the fill material. Water flows (perpendicular to the air) through the fill by gravity. the air flow is directly opposite to the water flow (see diagram below).

Air flow first enters an open area beneath the fill media, and is then drawn up vertically. The water is sprayed through pressurized nozzles near the top of the tower, and then flows downward through the fill, opposite to the air flow. The cool water absorbs heat from the hot process streams which need to be cooled or condensed, and the absorbed heat warms the circulating water. The warm water returns to the top of the cooling tower and trickles downward over the fill material inside the tower.

Square shape cooling tower contacts ambient air rising up through the tower either by natural draft or by forced draft using large fans in the tower. That contact causes a small amount of the water to be lost as windage (W) and some of the water (E) to evaporate. This method works on the principle that continuous particle removal will keep the system clean. Manufacturers typically package side-stream filters on a skid, complete with a pump and controls. For high flow systems, this method is cost-effective. Properly sizing a side-stream filtration system is critical to obtain satisfactory filter performance.