Abstract
Cooling tower is an indispensable part, used as a direct contact type heat exchanger mainly for evaporative cooling. Cooling tower generally dissipates, remove heat from thermal power plants. In an induced draft cooling tower of counter flow, used for a mini-steam power plant, hot water enters at the top, while the air is introduced at the bottom and exits at the top, air is allowed to come in contact with falling water droplets, causing evaporative cooling. A possibility of desired change with different spray angle, patterns, is tried and analysed. On findings, best suited spray nozzle angle resulted is 90°, and amongst three spray patterns, full cone, hollow cone and spiral type nozzle; full cone nozzle of 90° spray angle helps achieving efficiency up to 82%. The range increases successively from 9.8°C to 15.5°C for FC nozzle, in approach to WBT; the desirable fall of 3.56°C is attained with effectiveness of 81.63%.
Highlights
Cooling towers are used to remove temperature of hot recirculating fluid in the process plant, which otherwise subject to lesser efficiency of process without of it, power generation in case of steam power plant for an instance and keeping the temperature under stipulated limit ensures safety
Cross flow induced draft In an induced draft cooling tower of counter flow, hot water enters at the top falling through spraying nozzle while the air is introduced at the bottom and exits at the top
Cooling tower of counter flow held with an experimental trial, all performance parameters have been recorded in quantitative form, and qualitative conclusions acquired
Summary
Cooling towers are used to remove temperature of hot recirculating fluid in the process plant, which otherwise subject to lesser efficiency of process without of it, power generation in case of steam power plant for an instance and keeping the temperature under stipulated limit ensures safety. Counter-flow cooling towers are very common amongst the various types of cooling towers used, with direct contact between the water and the air by evaporating some part of the water. Cooled water falls into the tower basin while the remove heat leaves the device as warm air, at the cost of some mass of water evaporates as it encounters outside air. Mechanical draft cooling towers are available in the following airflow arrangements: a. C. Cross flow induced draft In an induced draft cooling tower of counter flow, hot water enters at the top falling through spraying nozzle while the air is introduced at the bottom and exits at the top
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