Abstract
The present paperhas discussed the analyzing and optimizing methodology of mechanical utility systems.A study was carried out at Melog Speciality ChemicalsLtd with the aim of optimising the company’s utility system efficiency. Energy conservation is a worldwide, concern and an important consideration for any industry. In a chemical plant, amajor portion of the supplied energy is consumed in the production of compressed air. This compressed air is used for various applications. Hence in order to increase the efficiency of the plant the input energy supplied has to be decreased by making use of the most effective methods of compression which indirectly results in asaving of power.The paper revolves around the main objective of reducing the compression cost of air. This aim has been theoretically achieved by replacing the existing reciprocating compressor with a screw compressor. Cost saving due to the use of screw compressor is achieved because it requires low motor power to operate as compared to its reciprocating counterpart. Also, thereciprocating compressor needs frequent maintenance of various components like v- belt, piston rings, piston, etc. whereas screw compressor does not require frequent maintenance which decreases the compression system’s maintenance downtime. As there is no intercooler required in screw compressor the need to pump the cooling water at an intermediate stage of compression is eliminated, which is otherwise necessary for optimum operation reciprocating compressor.
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