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Renewable & non renewable resources
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- 2. RENEWABLE & NONRENEWABLE RESOURCES
- 3. RENEWABLE RESOURCES A renewableresource is an organic natural resource that can replenish in due time compared to the usage, either through biological reproduction or other naturally recurring processes. Renewable resources are a part of Earth's natural environment and the largest components of its ecosphere. A positive life cycle assessment is a key indicator of a resource's sustainability.
- 5. DEFINITIONS OF RENEWABLERESOURCES MAY ALSO INCLUDE AGRICULTURE PRODUCTION, AS IN SUSTAINABLE AGRICULTURE AND TO AN EXTENT WATER RESOURCES.IN 1962 PAUL ALFRED WEISS DEFINED RENEWABLE RESOURCES AS: "THE TOTAL RANGE OF LIVING ORGANISMS PROVIDING MAN WITH FOOD, FIBERS, DRUGS, ETC..." THE TERM DOES NOT REFER HOWEVER TO METALS, MINERALS AND FOSSIL FUELS. WHILE ENERGY PER SE IS NOT CONSUMED, SOME INCLUDE AS WELL THE PROVISION OF RENEWABLE ENERGY BY SOLAR, GEOTHERMAL AND WIND POWER STATIONS UNDER THE DEFINITION.
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- 7. A NON-RENEWABLE RESOURCE(ALSO CALLED A FINITE RESOURCE) IS A RESOURCE THAT DOES NOT RENEW ITSELF AT A SUFFICIENT RATE FOR SUSTAINABLE ECONOMIC EXTRACTION IN MEANINGFUL HUMAN TIME-FRAMES. AN EXAMPLE IS CARBON-BASED, ORGANICALLY-DERIVED FUEL. THE ORIGINAL ORGANIC MATERIAL, WITH THE AID OF HEAT AND PRESSURE, BECOMES A FUEL SUCH AS OIL OR GAS. FOSSIL FUELS (SUCH AS COAL, PETROLEUM, AND NATURAL GAS), AND CERTAIN AQUIFERS ARE ALL NON-RENEWABLE RESOURCES.
- 9. IN CONTRAST, RESOURCESSUCH AS TIMBER (WHEN HARVESTED SUSTAINABLY) AND WIND (USED TO POWER ENERGY CONVERSION SYSTEMS) ARE CONSIDERED RENEWABLE RESOURCES, LARGELY BECAUSE THEIR LOCALIZED REPLENISHMENT CAN OCCUR WITHIN TIMEFRAMES MEANINGFUL TO HUMANS. ALL FOSSIL FUELS ARE NONRENEWABLE, BUT NOT ALL NONRENEWABLE ENERGY SOURCES ARE FOSSIL FUELS. THERE ARE FOUR MAJOR NONRENEWABLE ENERGY SOURCES: - CRUDE OIL - NATURAL GAS - COAL - URANIUM (NUCLEAR ENERGY)
- 10. WE ALL AREGOING TO TELL YOU ABOUT… RENEWABLE RESOURCES/ENERGY
- 11. TYPES OF ENERGY/RESOURCES: TIDAL ENERGY WIND ENERGY SOLAR ENERGY HYDROPOWER ENERGY THERMAL ENERGY
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- 13. TIDAL POWER, ALSOCALLED TIDAL ENERGY, IS A FORM OF HYDROPOWER THAT CONVERTS THE ENERGY OF TIDES INTO USEFUL FORMS OF POWER, MAINLY ELECTRICITY. ALTHOUGH NOT YET WIDELY USED, TIDAL POWER HAS POTENTIAL FOR FUTURE ELECTRICITY GENERATION. TIDES ARE MORE PREDICTABLE THAN WIND ENERGY AND SOLAR POWER
- 15. ALTHOUGH NOT YETWIDELY USED, TIDAL POWER HAS POTENTIAL FOR FUTURE ELECTRICITY GENERATION. TIDES ARE MORE PREDICTABLE THAN WIND ENERGY AND SOLAR POWER. AMONG SOURCES OF RENEWABLE ENERGY, TIDAL POWER HAS TRADITIONALLY SUFFERED FROM RELATIVELY HIGH COST AND LIMITED AVAILABILITY OF SITES WITH SUFFICIENTLY HIGH TIDAL RANGES OR FLOW VELOCITIES, THUS CONSTRICTING ITS TOTAL AVAILABILITY. HOWEVER, MANY RECENT TECHNOLOGICAL DEVELOPMENTS AND IMPROVEMENTS, BOTH IN DESIGN AND TURBINE TECHNOLOGY (E.G. NEW AXIAL TURBINES, CROSS FLOW TURBINES), INDICATE THAT THE TOTAL AVAILABILITY OF TIDAL POWER MAY BE MUCH HIGHER THAN PREVIOUSLY ASSUMED, AND THAT ECONOMIC AND ENVIRONMENTAL COSTS MAY BE BROUGHT DOWN TO COMPETITIVE LEVELS.
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- 17. WIND POWER ORWIND ENERGY IS THE ENERGY EXTRACTED FROM WIND USING WIND TURBINES TO PRODUCE ELECTRICAL POWER, WINDMILLS FOR MECHANICAL POWER, WINDPUMPS FOR WATER PUMPING, OR SAILS TO PROPWIND POWER, AS AN ALTERNATIVE TO FOSSIL FUELS, IS PLENTIFUL, RENEWABLE, WIDELY DISTRIBUTED, CLEAN, PRODUCES NO GREENHOUSE GAS EMISSIONS DURING OPERATION AND USES LITTLE LAND
- 19. THE EFFECTS ONTHE ENVIRONMENT ARE GENERALLY LESS PROBLEMATIC THAN THOSE FROM OTHER POWER SOURCES. AS OF 2013, DENMARK IS GENERATING MORE THAN A THIRD OF ITS ELECTRICITY FROM WIND AND 83 COUNTRIES AROUND THE WORLD ARE USING WIND POWER TO SUPPLY THE ELECTRICITY GRID.WIND POWER CAPACITY HAS EXPANDED RAPIDLY TO 336 GW IN JUNE 2014, AND WIND ENERGY PRODUCTION WAS AROUND 4% OF TOTAL WORLDWIDE ELECTRICITY USAGE, AND GROWING RAPIDLY.
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- 21. SOLAR ENERGY ISRADIANT LIGHT AND HEAT FROM THE SUN HARNESSED USING A RANGE OF EVER- EVOLVING TECHNOLOGIES SUCH AS SOLAR HEATING, SOLAR PHOTOVOLTAICS, SOLAR THERMAL ENERGY, SOLAR ARCHITECTURE AND ARTIFICIAL PHIT IS AN IMPORTANT SOURCE OF RENEWABLE ENERGY AND ITS TECHNOLOGIES ARE BROADLY CHARACTERIZED AS EITHER PASSIVE SOLAR OR ACTIVE SOLAR DEPENDING ON THE WAY THEY CAPTURE AND DISTRIBUTE SOLAR ENERGY OR CONVERT IT INTO SOLAR POWER.
- 23. IT IS ANIMPORTANT SOURCE OF RENEWABLE ENERGY AND ITS TECHNOLOGIES ARE BROADLY CHARACTERIZED AS EITHER PASSIVE SOLAR OR ACTIVE SOLAR DEPENDING ON THE WAY THEY CAPTURE AND DISTRIBUTE SOLAR ENERGY OR CONVERT IT INTO SOLAR POWER. ACTIVE SOLAR TECHNIQUES INCLUDE THE USE OF PHOTOVOLTAIC SYSTEMS, CONCENTRATED SOLAR POWER AND SOLAR WATER HEATING TO HARNESS THE ENERGY. PASSIVE SOLAR TECHNIQUES INCLUDE ORIENTING A BUILDING TO THE SUN, SELECTING MATERIALS WITH FAVORABLE THERMAL MASS OR LIGHT DISPERSING PROPERTIES, AND DESIGNING SPACES THAT NATURALLY CIRCULATE AIR.
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- 25. SO JUST HOWDO WE GET ELECTRICITY FROM WATER? ACTUALLY, HYDROELECTRIC AND COAL-FIRED POWER PLANTS PRODUCE ELECTRICITY IN A SIMILAR WAY. IN BOTH CASES A POWER SOURCE IS USED TO TURN A PROPELLER-LIKE PIECE CALLED A TURBINE, WHICH THEN TURNS A METAL SHAFT IN AN ELECTRIC GENERATOR, WHICH IS THE MOTOR THAT PRODUCES ELECTRICITY. A COAL-FIRED POWER PLANT USES STEAM TO TURN THE TURBINE BLADES; WHEREAS A HYDROELECTRIC PLANT USES FALLING WATER TO TURN THE TURBINE.
- 27. THE THEORY ISTO BUILD A DAM ON A LARGE RIVER THAT HAS A LARGE DROP IN ELEVATION (THERE ARE NOT MANY HYDROELECTRIC PLANTS IN KANSAS OR FLORIDA). THE DAM STORES LOTS OF WATER BEHIND IT IN THE RESERVOIR. NEAR THE BOTTOM OF THE DAM WALL THERE IS THE WATER INTAKE. GRAVITY CAUSES IT TO FALL THROUGH THE PENSTOCK INSIDE THE DAM. AT THE END OF THE PENSTOCK THERE IS A TURBINE PROPELLER, WHICH IS TURNED BY THE MOVING WATER. THE SHAFT FROM THE TURBINE GOES UP INTO THE GENERATOR, WHICH PRODUCES THE POWER. POWER LINES ARE CONNECTED TO THE GENERATOR THAT CARRY ELECTRICITY TO YOUR HOME AND MINE. THE WATER CONTINUES PAST THE PROPELLER THROUGH THE TAILRACE INTO THE RIVER PAST THE DAM.
- 28. BY THE WAY,IT IS NOT A GOOD IDEA TO BE PLAYING IN THE WATER RIGHT BELOW A DAM WHEN WATER IS RELEASED!
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- 31. THERMAL ENERGY ISA TERM SOMETIMES USED TO REFER TO THE INTERNAL ENERGY PRESENT IN A SYSTEM IN A STATE OF THERMODYNAMIC EQUILIBRIUM BY VIRTUE OF ITS TEMPERATURE.THE AVERAGE TRANSLATIONAL KINETIC ENERGY POSSESSED BY FREE PARTICLES IN A SYSTEM OF FREE PARTICLES IN THERMODYNAMIC EQUILIBRIUM (AS MEASURED IN THE FRAME OF REFERENCE OF THE CENTER OF MASS OF THAT SYSTEM) MAY ALSO BE REFERRED TO AS THE THERMAL ENERGY PER PARTICLE.
- 33. THE THERMAL ENERGYMAY INCLUDE BOTH THE KINETIC ENERGY AND POTENTIAL ENERGY OF A SYSTEM'S CONSTITUENT PARTICLES, WHICH MAY BE ATOMS, MOLECULES, ELECTRONS, OR PARTICLES. IT ORIGINATES FROM THE INDIVIDUALLY RANDOM, OR DISORDERED, MOTION OF PARTICLES IN A LARGE ENSEMBLE. IN IDEAL MONATOMIC GASES, THERMAL ENERGY IS ENTIRELY KINETIC ENERGY. IN OTHER SUBSTANCES, IN CASES WHERE SOME OF THERMAL ENERGY IS STORED IN ATOMIC VIBRATION OR BY INCREASED SEPARATION OF PARTICLES HAVING MUTUAL FORCES OF ATTRACTION, THE THERMAL ENERGY IS EQUALLY PARTITIONED BETWEEN POTENTIAL ENERGY AND KINETIC ENERGY.
- 34. HAVE A WATCHON ALL THESE VIDEOS…!!
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