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Flashcards in chapter 18 Deck (14):
1

ENERGY EFFICIENCY

- 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

2

LIFE CYCLE COSTS

-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

3

HYBRID ELECTRIC INTERNAL COMBUSTION ENGINE

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

4

FUEL CELL

-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

5

COGENERATION

*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

6

SUPER INSULATED HOUSE

-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

7

ECOROOFS (GREEN ROOFS)

-COVERED IN PLANTS

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

8

PASSIVE SOLAR ENERGY

-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

9

ACTIVE SOLAR ENERGY

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

*PHOTOVOLTAIC CELLS*

10

PHOTOVOLTAIC CELLS
(PV SOLAR CELLS)

-CONVERTS SOLAR ENERGY DIRECTLY INTO ELECTRICAL ENERGY

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

11

BIOFUELS

-SUBSTITUTIONS FOR GAS AND DISEL MADE FROM PLANT MATERIAL

EX: ETHANOL AND BIODISEL

12

GEOTHERMAL ENERGY

-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

13

MICROPOWER SYTEMS

-SYSTEMS OF SMALL SCALE UNITS THAT GENERATE ELECTRICITY

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

14

GEOEXCHAGE

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