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Heatgenerators on straw of 75-750 kW – Moldagrotehnica, SA | all.biz
Buy Heatgenerators on straw of 75-750 kW
Heatgenerators on straw of 75-750 kW
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teplogeneratory_na_solome_75_750_kvt
teplogeneratory_na_solome_75_750_kvt

Heatgenerators on straw of 75-750 kW

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Description

The government of the Republic of Moldova within partnership, with the World bank and Global ecological fund made the decision to start realization of a pilot project which will promote use of renewables from agricultural waste. It is the first step in application of such technologies with neutral emission of greenhouse gases and absolutely new for the Republic of Moldova.

Why you have to use biomass

Russia is the only supplier of energy resources to Europe and energy security of the Republic of Moldova depends on the supplier. Nevertheless, there is a remaining tendency of an increase in prices for energy resources which directly influences an expense and consumption. It is already known that for 2010 the price of the imported gas increased by 20,8% (from 192 USD/1000 m3 to 233 USD/1000 m3)

We have biomass, and can be transformed in thermal to ignore.

In Moldova in 2008 about 1,5 million hectares of grain crops were sowed.

  • We can receive from 5 to 15 million tons of straw.
  • Not less than 50% of straw are burned in the field.
  • We pollute environment.
  • We destroy soil microorganisms.
  • We throw out money which can heat us.

Scopes of coppers

Heatgenerators can be used in various areas, such as:

  1. Schools - for example:

    The heatgenerators of production SA Moldagrotehnica installed in: Glodyanakh and Kriulyanakh

    The heatgenerators installed by the ERA project in: Syndzherey, Stefan Wode, Keushana, Glodyana, Edinets and Ungena.

  2. Houses
  3. Greenhouses
  4. Receiving electric power
  5. For drying of various products
  6. Other public institutions in rural areas

Results of introduction of the pilot project on installation of coppers in Moldova

Now Moldagrotekhnika SA makes heatgenerators on licenses of the Alcon company - Denmark, for ensuring heat in public places in rural areas.

Coppers in the following cities are so far already established:

  1. Power 150kW - it was established in Kriulyansky district, the village of Hyrtopul Mara at rural school.
  2. Power 190kW - it was established in Glodyansky district, the village Kazhba at rural school.

Kriulyansky district, the village of Hyrtopul Mara - rural school, the 150KW heatgenerator

Glodyansky district, the village Kazhba - rural school, the 190KW heatgenerator

Benefits from reduction of emissions of greenhouse gases

The Kyoto Protocol is the international agreement which was concluded to Kyoto, Japan, in December, 1997 160 countries and demands from the countries which signed it - to reduce emissions of greenhouse gases. The protocol came into force on February 16, 2005 and the country during 2008-2012 demands from industrially developed to reduce emissions of the polluting substances by 5,2% in comparison with 1990.

Technology

Unlike traditional technology of heating (coal, gas) the heatgenerator on straw is more expensive purchase, but the economy will be received later and will give the chance of restoration of investments within max. 2 years. The period of operation of the heatgenerator on straw makes 15 years.

Effective technologies: economic reasons

Calculations were presented made proceeding from the heating period in - 160 days.

The heatgenerator on straw can replace completely heating with natural gas or coal, depending on power:

Calculation of necessary power heatgenerators on straw for a house

On the basis of consumer data, calculations for determination of thermal power of the heatgenerator pay off on the following formula:

where WK is a power of a copper, Kw;

V - volume of the room, m3;

25 - heatgenerator power efficiency on biomass (1Kw on 25 m3).

1,15 - Proceeding from data, the coefficient from 1,15 to 1,20 on a covering of unplanned losses of heat is applied to each room.

Example: on the area of 1000 sq.m with height of 2,5 m (standard height) that makes volume in 2500 m3, we will apply the following operation:

On the basis of a formula, in the room of 1000 sq.m with height of 2,5 m, to us it is necessary the 115 kW heatgenerator.


Straw

Gas

Coal

Price, USD

60/t

360/barel

250/t

EFFICIENCY

81%

92%

70%

150 kW

Annual expense

116 t

38,300 m3

85 t

Sum, USD

6,960

13,788

21,250

Economy, USD

-

6,828

14,290

300 kW

Annual expense

231 t

76,000 m3

171 t

Sum, USD

13,860

27,360

42,750

Economy, USD

-

13,500

28,890

600 kW

Annual expense

462 t

152,000 m3

341 t

Sum, USD

27,720

54,720

85,250

Economy, USD

-

27,000

57,530

Ecology

Use of heatgenerators on straw, in comparison with coal you will achieve an umenshcheniye of emissions in the atmosphere of the polluting substances and greenhouse gases.

Further calculations of the heatgenerator with a power of 300 kW are shown, at a heating season - 160 days.

Type

Coal

Straw

Reduction quantitatively

Reduction of %

The lowest warmth of combustion (kJ/kg)

22,563

14,400

8,163

36,18

Content of sulfur (W %)

1.7

0.16

1,54

90,59

Content of carbon (W %)

63.8

42

21,8

34,17

Ash-content (W %)

22.9

4

18,9

83

EFFICIENCY (%)

70

81

- 11

- 12,5

Annual expense (kg)

170,680

231,111

- 61

- 35,40

Ratio air-fuel

1,4

1,4

0

0

Exhaust (nm3/kg)

8.72

5.8

2,92

33,5

Emissions

SO2

5,8 t/years

0.35 t/year

5,45

93,97

NOx

0.45 t/year

0,24 t/years

0,21

46,67

PM

5.86 t/year

0.11 t/year

5,75

98,13

CO2

399.28 t/year

355.91t/year

43,37

10,87

Total emisii

411.84 t/year

358.22t/year

53,62

85

The scheme of a poklyucheniye of the heatgenerator to a network of heating (already existing)

At construction of new boiler rooms on straw, old boiler rooms on coal and natural gas, remain and can be put into operation in case of need. The heatgenerator on straw can be connected to the existing systems of heating to cut down expenses on a prokloadka of new systems of heating.

Thermal point

  1. the existing coal or gas boiler rooms
  2. the heatgenerator on straw
  3. the tank for water storage
  4. broad tank
  5. exhaust valve
  6. pumps for water circulation
  7. crane
  8. starting crane
  9. possible expansion of pressure
  10. tank for hot water
  11. water exit
  12. automatic ventilation is possible
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Heatgenerators on straw of 75-750 kW
Heatgenerators on straw of 75-750 kW
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