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Calculate the power available from a heat pump

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True/False

1. Biofuels are the newest source of energy used by humans.

2. The burning of wood produces substantial quantities of SOx emissions.

3. Photosynthesis drives almost the entire biosphere.

4. Ethanol can be used in its pure form as a fuel in an internal combustion engine.

5. On volumetric basis ethanol has higher energy content compared with gasoline.

6. It is possible to burn conventional cooking oils in modified diesel engines.

7. Biomass is the one source that can directly replace fossil fuels for transportation.

8. The storage of energy involves the conversion of one type of energy to another and back again.

9. The original motivation for ethanol blends was not so much replacement of fossil fuels as controlling emissions.

10. EPA gives ENERGY STAR ratings for appliances.

11. Cogeneration has been utilized more effectively for coal-fired than for natural gas plants.

12. Both biodiesel and ethanol can corrode the rubber seals used in automotive fuel systems.

13. For lighting purposes (for good color rendition), it is desirable to have a narrow spectrum of wavelengths.

14. Typically, furnaces with ? > 0.9 are noncondensing furnaces.

15. Electricity is an energy source.

16. Hydrogen is an energy carrier.

17. Home heat pump systems can be designed to heat and cool a house.

18. Heat Pump COP is always greater than one.

19. A typical single-glazed window has an R-value of about 5.

20. Classification of fluorescent lamps result from different combinations of phosphors.

21. Compressed air energy storage is a practical method for large-scale energy storage.

22. A bicycle wheel as a flywheel would be a very useful energy storage device.

23. A battery is an electromechanical device for storing electrical energy.

24. A super-capacitor is a low-energy, high-power energy storage device.

25. Hydrogen is a primary energy source.1. Identify the difference between ethanol and biodiesel. Compare the environmental impacts of ethanol versus biodiesel

2. Briefly describe the relevance of LEED certification in energy conservation.

3. SCSU is planning to replace its oil-fired heating plant with a wood-fired boiler supplied by wood chips produced from logging waste. SCSU claims it will be 100% carbon-neutral. Formulate an argument supporting or opposing this claim

4. Calculate the power available from a heat pump when the input power is 10 kW and the inside and outside temperatures are 72o F and 26o F, respectively.

5. Trace the evolution of residential lighting in terms of energy conservation

6. Compare and contrast ‘pumped hydroelectric storage' and ‘compressed air energy storage

7. A pumped hydroelectric storage reservoir has an area of 0.5 km2 and an average depth of 10m. The water flows to a lower reservoir with a head of 200m. a) What is the total energy available in MWhe? Assume a generator efficiency of 83%. b) If SCSU requires an average of 350 MWe to fulfill its needs, how long will the stored energy from the pumped hydroelectric facility last. (show the calculations)

8. Briefly describe the principle behind ‘flow batteries'. Highlight its unique features

9. Compare and contrast hydrogen ICE vehicles and hydrogen fuel cell vehicles

10. Give a brief overview of future energy technologies

Reference no: EM131035947

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