Closed-circuit cooling and heat dispersion can be accomplished with the aid of cooling towers. Heavy industries, power plants, and air conditioning are examples of typical application areas. The water that has to be cooled is sprayed onto a wet deck surface in cooling towers. In the counter flow, water and air come into close touch. Convection is used to cool the water. A fraction of the water evaporates, and the heat that is lost by evaporation further cools the water. the key elements and operation of a forced-convective cooling tower. A pump transfers hot water from a tank to an atomizer. The water to be cooled is sprayed by the atomizer onto the wet deck surface. Along the wet deck’s surface, water trickles from top to bottom as air travels from bottom to top. Convection and evaporation directly transport the heat from the water to the air. It is measured how much water has evaporated. A fan creates the air flow, which is then controlled by a throttle valve. The transparent cooling column makes it easy to see the wet deck surface and the trickling water. Every significant process parameter is collected (volumetric air flow rate, temperatures of air and water, air humidity, water flow rate). Digital displays allow for the reading of the measured data. The measured data can also be sent straight to a PC via LAN or USB at the same time. Software for data capture is not included but can be ordered separately. A psychrometric diagram illustrates the changes in the condition of the air.
- General Operating Procedures of Cooling Tower.
- General Observation of the Forced Draught Cooling Tower.
- End State Properties of Air and Steady Flow Equations.
- Investigation of the Effect of Cooling Load on Wet Bulb Approach.
- Cooling tower performance.
- Investigation of the Effect of Air Velocity on Wet Bulb Approach and Pressure Drop through the Packing.
- Investigation of the Relationship between Cooling Load and Cooling Range.
- Measurement of water and air flow rates temperature and humidity.
- Basic Cooling Tower Unit The unit comes complete with the following main components:
- Load Tank
The load tank is made of stainless steel having a capacity of approximately 9 liters. The tank is fitted with two cartridge heaters, 1kW and 1.0 kW each, to provide a total of 2 kW cooling load. A make-up tank is fixed on top of the load tank. A float type valve at the bottom of the make-up tank is to control the amount of water flowing into the load tank. A centrifugal type pump is supplied for circulating the water from the load tank through a flowmeter to the top of the column, into the basin and back to the load tank. A temperature sensor and temperature controller is fitted to load tank to prevent overheating. A level switch is fitted to the load tank so that when a low level condition occurs, the heater and the pump will be switched off