M Class utilizes only components that are manufactured from the finest raw material and have been proven in the field. All components are designed to operate collectively to give the optimum overall cooling efficiency. This translates to lower operating cost and long term savings to the operator.
TC-M Series Counterflow Tower Specification
The cooling tower shall be induced-draft, counterflow square, film filled, FRP Cooling Tower. For multiple cell units, watertight partition shall be provided to create completely equal, separate cells. Cooling tower shall be Truwater TC Series or approved equivalent.
Cooling Tower shall be capable of providing the thermal performance scheduled.
3.0 PERFORMANCE WARRANTY
The cooling tower manufacturer shall guarantee that the tower supplied will meet the specified performance conditions when the tower is installed according to plans. If, because of a suspected thermal performance deficiency, the Owner chooses to conduct an on-site thermal performance test under the supervision of a qualified, disinterested third party in accordance with CTI or ASME standards during the first year of operation; and if the tower fails to perform within the limits of test tolerance; then the cooling tower manufacturer will pay for the cost of the test and will make such corrections as are appropriate and agreeable to the Owner to compensate for the performance deficiency.
The cooling tower main frame structure shall be hot dip galvanised steel (HDG). The casing, louver & fan cylinder shall be made of fibreglass reinforced polyester (FRP).
5.0 MECHANICAL EQUIPMENT
5.1 Fan(s) shall be propeller-type, incorporating heavy-duty blades of cast aluminium alloy. Blades shall be individually adjustable.
5.2 The V-belts shall be of rubber with fabric impregnated able to withstand the adverse ambient conditions of 50°C and 100% R.H. The pulleys shall be cast iron with the grooves of standard dimensions. FRP belt cover must be provided to protect V-belts from moist discharge air.
5.3 Motor(s) shall be TEFC, weatherproof sq. caged induction type suitable for 3ph /50Hz/415V power supply and with 1450 rpm. Motor shall be installed outside the discharge air stream.
5.4 The complete mechanical equipment assembly for each cell shall be supported by a rigid, welded, hot-dipped galvanised steel structural support.
6.0 FILL AND DRIFT ELIMINATORS
6.1 Fill shall be film-type, PVC thermoplastic especially formulated for use in cooling tower applications. Fill shall be cross-corrugated and the surface of the sheet shall have a suitable micro-structure to improve turbulence and water distribution. Fill sheets shall be bonded at all contact points. Fill shall be of alternate tip configuration to improve water drainage and minimize air pressure drop.
6.2 Drift Eliminators shall be assembled in easily removable modules. Drift eliminator shall be 3-pass sinusoidal-shaped blade type. Guarantee drift losses must not exceed 0.005% of the design water flow rate.
The manufacturer shall submit test certificates on drift loss rates conducted by a third party tester appointed by Cooling Tower Institute (CTI) for approval.
7.0 HOT WATER DISTRIBUTION SYSTEM
Each cell of the tower shall be equipped with a hot water distribution system. Header and lateral pipes shall be PVC. Nozzles shall be non-clogging, capable of passing objects up to 25mm in diameter. The spray system must be designed such that the nozzle outlet is the lowest point in the system. The water inlet connection shall be located outside the tower casing. No rotating mechanical sprinkler system is allowed.
8.0 COLD WATER BASIN
The cold water basin shall be of FRP and supported on HDG steel framework. The basin shall be designed with sufficient water capacity to avoid air entrainment in the outlet during operating conditions. FRP sump(s) shall be provided and equipped with suction strainer, make-up ball valve, overflow and drain. For multiple tower arrangement, equalising pipes between basins shall be provided to maintain the same level of water in each basin.
9.0 ACCESS AND SAFETY
Inspection door and ladder shall be provided for inspection & maintenance purposes. Louver panel shall be removable for access to the sump, make-up, overflow and suction strainer. HDG steel fan guard shall be provided over each fan cylinder.