A . I . Anarbaev

1. CAPACT Project July 4-6, 2007, Almaty, Kazakhstan, 4/6/2007 REDUCTION OF EFFECT ON ENVIRONMENT IN THERMAL ENERGY SECTOR OF UZBEKISTAN WHILST SOLAR ENERGY UTILIZATION. A.I.Anarbaev

2. Environment situation in Uzbekistan Legend:

3. Structure of sale and consumption of thermal energy in Uzbekistan

4. Emissions of thermal energy enterprises • Amount of pollutant matters of thermal energy enterprises is equal to more than 200 thousand tones according to data of state statistic report. • Total reduction of emissions to atmosphere is explained by change of fuel balance to the side of portion reduction of fired oil-fuel and increase of gas portion. • 50% of carbon dioxide creating greenhouse effect goes into the atmosphere with emissions of pollutants from thermal energy enterprises at firing of fuel. • Quantity of formed emissions of carbon dioxide depends on consumption and content of carbon in working mass of fired fuel.

5. Problems municipal energy sector • Dependant scheme of joining of the central heating loading under open scheme of water intake; • Low efficiency of thermo generating equipment of small boiler compartments; • Imperfect construction of heat-insulation of heat distribution networks; • Intensive internal and external corrosion of pipe lines; • Absence of thermal energy metering devices; • Big thermal losses in buildings due to imperfectness of construction and construction materials; • Number of organizational and economic problems, in particular: • Unreasonable low level of tariffs; • Insufficient level of payments collection; - Lack of financial resources.

6. Helio-field of “Vodnik” boiler compartment in Tashkent Boiler compartment with capacity of trap aggregates of 60 Gkal/hprovides with central heating and hot water 98 apartment buildings, 66 municipal buildings and 4 plants (10 000 people)

7. Technological scheme of solar system of water heating for boiler compartments

8. Advantages of principal scheme of solar device of “Vodnik” boiler compartment • Heating in solar water heaters of most cold matter, therefore, achievement of highest efficiency of solar energy use and longer length of working season; • The scheme allows directing through solar system all consumption volume of additional water which decreases final temperature of helio-heating; • Solar water heaters are protected from corrosion in non-deaerated water due to limbation of the scheme.

9. Remote control and management of geliosistem solar-fuel boiler Provides automatic management by using the required temperature at the outlet of geliotehniks part

10. Work and thermal efficiency of solar part of the boiler compartment • Helio-system is implemented in type of helio-device to existing boiler compartment and serves for preliminary heating of additional water spent on needs of hot water supply, up to 25-35 0С. • Up-heating to required temperature (65-700С) is implemented in traps, consuming gas • According to the results of test exploitation from April to September at average temperature of helio-countour of 31-370С of average daily efficiency of helio-device was equal to 0,45÷0,63.

11. Exploitation characteristics of solar and fuel boiler compartment in “Vodnik”, 2003

12. Economic and environment indicators of boiler compartment “Vodnik”. Area of helio-field of “Vodnik” boiler compartment with additional investments could be increased in 6 times and equal to 5 thousand m2. Substitution coefficient would be equal to about 30% from general annual thermal loading of boiler compartment.

13. Development of water solar and fuel boiler compartments in Uzbekistan

14. Solar collectors on roof of boiler compartment “Mashinostroitelnaya-2”