Материал: 2033

7. Look at the scheme and describe the further trends.

СибАДИ8. Read the definitions and learn it by heart.

Definition of CHP:

CHP – Combined heat and power when useful heat and electricity are produced from the technical process of the plant

Trigeneration is when both heat and cold as well as electricity are produced from the technical process of the plant.

District cooling with CHP requires an absorption chiller, which uses heat as the driving force to produce cold water.

9. Study the scheme and tell us what CHP plant is used for.

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10. Read and define: is it about advantages or about disadvantages?

Separate supply of electricity and district heating:

The heat losses of power-only generation based on any fuel are substantial, 1–3 times the gained electric power.

The factor depends on the fuel and type of the plant as follows:

1 = for combined gas and steam fuelled power plants and gas/diesel engines

(picture above); СибАДИ2 = for modern solid fuel power plants;

3 = for nuclear and small power plants.

11. Study the scheme and learn more about separate production.

12. Study the scheme and comments, and define: is it about advantages or about disadvantages of CHP?

Combined heat and power (CHP).

• The same amount of sold energy to customers as in the previous slide (100 and 100).

• Fuel consumption (222) 30% less than without CHP (310).

• The quantitative fuel savings vary but 30% is independent on the type of fuel or the plant.

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13. Look at the picture and describe the process of power production.

СибАДИ14. Read the definition and learn it by heart.

Definition of district cooling (DC): Interconnection of various cooling sources to customers by means of either hot or chilled water or even steam networks to serveroom space cooling.

15. Correct the mistakes in word divisions.

RationaleofDCprovidesthepossibilityto:Usealmostcarbonfreecoolingsourcess

uchassea,lakeandgroundwater.Usethehotwaterorsteamnetworkinsummer,whenexc

essheatisavailable,tocoolbuildingsbymeansofabsorptionchillers,asortoffridgeinwhi

chheatisusedinsteadofelectricity.UsewasteheatreceivedfromtheDCsystembymeans

ofaheatpumptowarmupthereturnwatertemperatureoftheDHnetwork.Thus,theintegr ationofDH,DCandCHPcreatestri-generationin whichheating,coolinganelectricityareprovidedathighoverallefficiencyandwithonlylowfluegasemissions(andlowcarbo nemissionsin particular).

DC combined with DH and CHP requires heat pumps

Example of heat pump plant in Helsinki

•Heat pump plant may produce both heating and cooling in the same process. •Utilizes purified sewage water and sea water.

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16. Study the scheme and give Russian equivalents for each part.

СибАДИ17. Identify each bar on the diagram using the word below.

Heat pump, DH system, coal CHP, oil and gas boiler, gas CHP, combined heat pump.

Check your answers.

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18. Put the devices and systems into right order according to CO2 emissions of heating options (from the least polluting to the most polluting).

Heat pump, DH system, coal CHP, oil and gas boiler, gas CHP, combined heat pump.

Look at the diagram and check your answers.

СибАДИ19. Describe advantages of DH according to given criteria.

Check your answers.

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