A. I. Karshibayev n. O. Ataullayev b. Sh. Narzullayev

CHAPTER 4. GENERAL PROBLEMS OF ENERGY
……
223
4.1.
Energy efficiency in buildings lighting……….………………..
223
4.2.
Electric vehicles and their efficient use……………………..…
228
4.3. Increasing the efficiency of heating systems…………………..
232
4.4. Heat losses in buildings and structures………………………...
236
4.5. Heat insulation of buildings and constructions………………..
239
4.6. Environmental Problems of Energy……………………………
246
4.7. Energy Efficiency and Ecology………………………………..
253

CHAPTER 5. METHODS AND TECHNICAL MEANS 
OF SAVING ELECTRICAL ENERGY IN TYPICAL 
TECHNOLOGICAL PROCESSES
……………….………..
262
5.1.
Reducing electricity losses in power transformers …………….
262
5.2.
Reducing electricity losses in cable networks …………..……..
265
5.3.
Reduce power losses by reactive power compensation …….....
267
5.4.
Methods and technical means of electrical saving in electric
drive ……………………..…………………………………….
274
5.5.
Power supply in unregulated electric drive ……………………
274
5.6.
Electric power supply in an adjustable electric drive ….………
283

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12
5.7.

Compressed air generation and distribution systems …….……
289
5.8.
The power consumed by the compressor motor………...……..
290
5.9. Electricity saving methods ………………….…………………
292
5.10.
Ventilation systems ..…………………………….…………….
299
5.11.
Determining the power of the fan motor ………………….…...
300
5.12.
Methods and technical means of saving electrical energy in
ventilation systems …………...………………………………..
300
5.13.
Pumping installations ………………………………………….
305
5.14.
Motor power of pumping unit ……………………..…………..
306
5.15.
Methods and technical means of electrical saving …….…...….
307
5.16.
Power saving in lighting systems ..…………………….………
320