Deepakkumar Yadav
Importance and purpose of Earthing Q. Explain importance and purpose of earthing. To save human life from shock due to current leakage of installation. To protect large buildings from lightening fall. To isolate the faulty section. This is achieved by providing path of leakage current through earthing system at this instant protective gearing operates. To … Read more
Energy Audit Instruments And Their Uses Q. Explain following energy audit instruments and their use. The requirement for an energy audit such as identification and quantification of energy necessitates measurement these measurements required the use of instruments. These instruments must be portable, durable, easy to operate and relatively inexpensive. An energy audit requires a large … Read more
Industrial End User (Electrical Distribution System) At the industrial end user premises, again the plant network elements like transformers at receiving sub-station, switchgear, lines and cables, load break switches, capacitors, cause losses, which affect the input-received energy. However the losses in such systems are meager and unavoidable. A typical plant (single line diagram) of electrical … Read more
Advantages of Intelligent Power Factor Controller for the Improvement of Energy Efficiency Increase in system voltage can be avoided with it. Capacitor’s life increases. Plant efficiency increases. Utilization of demand is optimized. Line losses are reduced. Extra load can be connected without sanction of additional demand. Demand penalty can be avoided. Zero cost maintenance is … Read more
Power Factor Correction As studied earlier, induction motors are characterized by power factors less than unity, leading to lower overall efficiency (and higher overall operating cost) associated with a plant’s electrical system. Capacitors connected in parallel (shunted) with the motor are typically used to improve the power factor. The impacts of p.f. correction include reduced … Read more
Specific Electrical Tariffs 1. Power factor incentives : Incentive is given to those consumers who are charged on the basis of maximum demand and are provided with meters to measure their load power factor. When the average power factor of the consumer is more than 0.95 an incentive at the rate of 1% of the … Read more
Types and Classification of Cogeneration Systems Q. Give Classification of Co-generation system on the basis of sequence of use and use of technology. This classification is based on different criteria Symbols Used : 1. Turbine unit similar to this symbol of compressor. It has rotary blades on the shaft and input energy is impinged on … Read more
Energy Conservation Techniques In Transformer Q. State energy conservation techniques in transformer. (A) Load Sharing : The problems like overloading, variation in voltage and heating are very common in transformers. . It takes a lot of time for its repairing and maintenance and also involves high cost Load sharing protects the transformer under overload condition. … Read more
Energy Conservation Techniques in Lighting Systems (A) By replacing lamp sources : The lamp sources used for lighting are : (i) Filament lamps (ii) Fluorescent lamp. While following types of lamps are mostly used for street lighting, factories etc. (iii) Mercury vapour lamp. (iv) Sodium vapour lamp. Halogen lamps can be used for public halls, … Read more
Summary of Recommendations of Walk Through Energy Audit The summary is presented in A, B, C categories : 1. Category A : Major Energy Conservation Opportunity (ECO) which give significant energy conservation opportunity. For example : (i) Reduce the voltage supply to illumination system by reduced tap setting on isolating step-down Use transformer. (This will … Read more