| Abstract [eng] |
Woodworking plant, like other plants, it is important to reduce the consumption of energy resources. In the thesis - wood sawmill. The main energy resource sawmill is electricity, so the energy costs reduction, ie Optimization is especially important for more efficient wood-working company's work. Tasks: • • the object of study and individual devices electricity parameters recording; • • operating modes specific to individual device settings; • • Analysis of the data collected; • • Identify optimization solutions for facilities improvement and operating modes for reducing electricity consumption, electricity use is likely to pay back for energy efficiency measures, as well as determine which efficiency improvement measures is not worth applying for a long payback. Research and analysis In order to apply appropriate optimization solutions necessary to realize continuous recording of electrical parameters. Electrical parameters for registration included several measuring instruments - portable network analyzer and created electrical parameter monitoring system. After the installation work and electricity consumption monitoring and following an analysis of the data collected was set sawmill equipment characteristics: • high start-up current equipment; • frequent start-up and braking,; • permanent installation work when there is no strain on the motors nominal power; • engine work idle mode -For the very high reactive power consumption and low power factor; • inefficient lighting system. Summary of Results 1. A large starting currents reduction of one of the most effective and quickest return on a machine tool is an electric motor control system, the start-up time of changing the motor winding connection to the star circuit, while routine work using a triangle by the winding circuit, as recent work by the engine develops maximum power and torque. 2. No fully loaded motor is running and the engine idle mode increases the reactive energy consumption - for reactive power compensation equipment installation. For maximum benefits and least cost, reactive power compensation device uses only the largest electricity consumers, as well as engines for a long time working in idle mode. 3. Solutions to modernize the lighting system of the object of study, ie, replacing inefficient lighting fixtures to LED technology lamps enabled up to 2 times to reduce the power needed to light the need for and the electricity costs 4. The use of frequency converters with engine management solves the existing problems due to high start-up currents for fully loaded or empty run by the engine used in the reactive energy of high consumption and low power factor, and it significantly ma-inti active power consumption, but for reasons of technological processes at all sawmills devices can be used to frequency converters. |
