Analytical study for reduce energy loss in compressed air systems

บทคัดย่อ

This research is to improve the efficiency of the air system and the loss of air pressure in the supply system because compressed air or air compressor systems are systems related to air generation. It is a tool and source in the air pressure production process. Its duty is to produce compressed air and deliver it to other power-saving machinery in the Pneumatics system. Measuring instrument control system and pneumatic conveying systems are used to greatly reduce human labor force. It is widely used in air compressor industrial plants. It is the main equipment used in almost every type of industrial factory. All sizes due to many production processes It is necessary to use compressed air for various pneumatics equipment such as Air Cylinder, air gun, polisher, drilling machine, sprayer and conveyor as well as being a component in the use of various automatic machines Reciprocating air compressors Most are small. They range in size from ¼ horsepower and up, but those commonly used in industrial plants usually range from 5-15 horsepower (3.7 – 11.0 kW). Working principle: Reciprocating air compressors produce compressed air by reducing the air volume in the cylinder. The work can be explained as follows.

- When the piston moves down inside the cylinder, the volume increases and a vacuum is created in the cylinder. The air outside the cylinder pushes the inlet valve open. Air will flow into the cylinder.

- When the piston moves up, it pushes the air into a smaller volume. Inside the cylinder, pressure builds up and forces the inlet valve to close. Compressed air flows from the cylinder into the air storage tank.

This research was done on only 1 machine, a piston air compressor that has been in use for 9 years. A belt-type air pump, PP310A 10HP, 3 cylinders, 260 liters, 380V. Research results: Electrical power = 7.8 kW x 3,600 hours per year x 75 % = 21,060 kWh/year (before) Electrical energy = 7.6 kWh x 3,600 hours per year x 72 % = 19,699 kWh/year (after) Result 21,060 kWh/year (before) - 19,699 kWh/year (after) = 1,361 kWh/year = 6.46 % (reduced energy per year)