chapter 18

Question 1

ENERGY EFFICIENCY

Answer 1

• A MEASURE OF THE USEFUL ENERGY PRODUCED BY AN ENERGY CONVERSION DEVICE COMPARED TO THE ENERGY THAT ENDS UP BEING CONVERTED INTO LOW QUALITY AND USELESS HEAT

Question 2

LIFE CYCLE COSTS

Answer 2

-INTIAL COST PLUS LIFETIME OPERATING COSTS.

EX: BUYING AN EXPENSIVE ENERGY SAVING DISHWASHER BUT SAVING MONEY ON THE WATER AND ELECTRICITY BILL IN THE LONG RUN

Question 3

HYBRID ELECTRIC INTERNAL COMBUSTION ENGINE

Answer 3

-RUNS ON GASOLINE, DISEL FUEL OR NATURAL GAS AND A SMALL BATTERY (RECHARGEABLE!!!!)

Question 4

FUEL CELL

Answer 4

• DEVICE THAT COMBINES HYDROGEN AND OXYGEN FUEL TO PRODUCE ELECTRCITY AND WATER VAPOR
• TWICE AS EFFICIENT AS AN INTERNAL COMBUSTION ENGINE
• LESS MACITENCE, LITTLE TO NO POLLUTION,AND HAVE NO MOVING PARTS

Question 5

COGENERATION

Answer 5

• COMBINED HEAT AND POWER*
• WHEN TWO USEFUL FORMS OF ENERGY ARE PRODUCED BY THE SAME FUEL SOURCE (VERY EFFICIENT)
• USED BY INDUSTRIES TO SAVE MONEY
• GREAT WAY TO IMPROVE ENERGY EFFICIENCY

Question 6

SUPER INSULATED HOUSE

Answer 6

-COST 5% MORE TO BIULD (MORE EXPENSIVE) HOWEVR IT CAN SAVE YOU UP TO $100,000 OVER A 40 YEAR PERIOD

• HEAVILY INSULATED AND AIRTIGHT
• NO NEED FOR A BACK UP HEATING SYSTEM
• AIR-TO-AIR HEAT EXCHANGER

Question 7

ECOROOFS (GREEN ROOFS)

Answer 7

-COVERED IN PLANTS

ADVANATGES:

• GOOD INSULATION
• ABSORB STORM WATER AND -RELEASE IT SLOWLY
• OUTLAST CONVENTIAL ROOFTOPS

Question 8

PASSIVE SOLAR ENERGY

Answer 8

• ABORBS AND STORES HEAT FROM THE SUN DIRECTLY WITHIN A STRUCTURE (WINDOWS, INSULATION)
• CAN LOWER YOUR ELECTRICITY BILL W/O THE NEED OF A SYSTEM WITH PUMPS OR MECHANICAL DEVICES

Question 9

ACTIVE SOLAR ENERGY

Answer 9

• ABORBS ENERGY FROM THE SUN BY PUMPING A HEAT ABSORBING FLUID THROUGH SPECIAL COLLECTORS USUALLY ON THE ROOF. (ACTIVE SOLAR COLLECTORS)
• PHOTOVOLTAIC CELLS*

Question 10

PHOTOVOLTAIC CELLS

PV SOLAR CELLS

Answer 10

• CONVERTS SOLAR ENERGY DIRECTLY INTO ELECTRICAL ENERGY

- SEMICONDUCTING MATERIAL THAT HOLDS ELECTRONS TAT FLOW CAUSING AN ELECTRIC CURRENT

Question 11

BIOFUELS

Answer 11

-SUBSTITUTIONS FOR GAS AND DISEL MADE FROM PLANT MATERIAL

EX: ETHANOL AND BIODISEL

Question 12

GEOTHERMAL ENERGY

Answer 12

-HEAT TRANSFERRED FROM THE EARTH’S EXTREME UNDERGROUND HEAT, STEAM AND THE NATURAL RADIOACTIVE DECAY OF ELEMENTS DEEP WITHIN THE EARTH.

EX: VOLCANIC ROCK, GYSERS, AND HOT SPRINGS

Question 13

MICROPOWER SYTEMS

Answer 13

-SYSTEMS OF SMALL SCALE UNITS THAT GENERATE ELECTRICITY

EX: FUEL CELLS, SOLAR PANELS AND SOLAR ROOFS
-MIGHT EVENTUALLY REPLACE LARGE SCALE UNITS

Question 14

GEOEXCHAGE

Answer 14

-BURIED PIPES MOVE HEAT IN OR OUT OF THE GROUND DEPENDING ON THE SEASON AND/OR THE HEATING AND COOLING REQUIREMENTS