renewable and non renewable sources of energy

“SOURCES OF ENERGY”RENEWABLE AND NON RENEWABLE

PRESENTED BY:ABHIRAJ CHAKRABARTI

MBA- HEALTH AND HOSPITALROLL NO. 001

Types of resources.Problems of Non-renewable energy & methods to reduce pollution and conserve resources.

Learning Objectives

To understand what a resource is.To understand the difference between

non-renewable and renewable resources.

To understand the advantages/disadvantages of using non-renewable energy.

To understand how we can conserve resources/reduce pollution.

1) Definition of what a ‘resource’ is.

2) List of as many resources.

3) Many issues surrounding resources.

A resource is anything we can use to help us live and work

Oil, coal, gas, trees, soil, wind, waves, sun, people, the countryside, water, rocks etc

Conflict over ownership, depletion, pollution

What is a resource

A) Things that humans can use.B) Fuel supplies already discovered

that can be used in the future.C) Recovery of waste products to

convert into materials that can be used again.

WHY HAS RESOURCE USE INCREASED?

Population Increase

Increase in Technology

Increase in purchasing power in LEDCs

Increase in disposable income.

Wealth (1990)

Fuel Use (2002)

There is likely to be a big increase in the use of energy by the year 2010:

A) Because there will be more people in the world so they will need more energy.

B) There is likely to be a big increase in the use of energy by the year 2010 because the worlds’ population will have increased meaning that there will be higher energy requirements. More people will have things like fridges and have to cook food or keep warm, which means more energy used.

Also, as countries develop they use more energy because they are able to afford labour saving devices, tools and gadgets which we take for granted in the developed world, like TVs, computers, cars etc. Energy is required not only in running these devices but also in their manufacture.

C) There will be a big energy increase by 2010 because statistics show that energy use has always increased over time and because there will be more people, they will use more energy than if there were less people. Also, China and India are using up lots of energy

Energy use increase as a country develops :

A) As countries become more developed there is a greater demand for energy because people get more materialistic and buy more products which use energy both in their manufacture as well as in their use. For example, people will buy labour saving devices like cars and dishwashers. These both use up energy when they are made and every time they are used. Also, as countries develop their industries develop and industry is a large consumer of energy.

B) As countries get richer they use more energy because everybody gets cars and electrical goods.

These both use lots of oil and electricity, so this is why energy use will increase.

C) Energy use might increase as a country gets more developed because when a country gets richer its population increases dramatically. This rise in population means that more coal and gas is needed to heat their homes. They will also need lots more petrol and diesel to fuel all the extra cars and lorries that will be on the road.

Natural resource

Renewable resource

Non-renewable resource

Energy

Fuel

What is meant by the term non-renewable

A) Resources which cannot be used again and again, like water and wind.

B) Fossil fuels like coal, oil and gas, which are finite, and will eventually run out are examples. Once they have been used they can’t be used again.

C) Fossil fuels made from trees and plants.

Advantages of Natural Resources

Renewable Non renewable

•Cheap to operate - Very cheap•Clean - Efficient•Do not damage the- Can produce a lot of environment energy in a short time

Disadvantages of Natural Resources

Renewable Non renewable

•Expensive to build - They will run out•Can be noisy - Very ‘dirty’•Generally - Harmful to theunattractive environment•Does not produce - ‘lots’ of energy

17%

9%

1%

32%

41%coal

nuclear

HEP and otherrenewablesoil

natural gas

Energy sources

Non-renewable energy resources

Non-renewable types of energy can only be used once. There is a finite amount of these materials on the Earth so they will run out eventually.Non-renewable resources make up approximately 95% of the world’s energy.

fossil fuels

nuclearcoal

gasoil

fuelwood

Non-renewable energy

biomass

mineral

1950

2000

2050

2100

2150

2200

NaturalGas

Oil Coal

ESTIMATEDRESERVES

Fossil fuels – How much is left ?

Ten things about Fossil Fuels:

Three main types: oil; coal; natural gas Take millions of years to form Cannot be replaced once used: non-renewable Found beneath the ground Can be difficult to get to Burnt to give off heat Burnt in power stations to generate electricity Give off carbon dioxide when burnt Fuelwood is a fossil fuel One day they could run out

Advantages of using fossil fuels

Disadvantages of using fossil fuels.

Acid Rain (due to pollution) Global Warming (due to pollution) Resource depletion & competition

Acid Rain

gas flue desulfurization(water is sprayed down the

chimneys and this turns the gases to sulfuric and nitric acids)

construct taller chimneys

use less energy more efficiently

fluidized bed technology(limestone is burnt with the

coal so that the sulfur remains with the limestone)

burn coal that contains less sulfur

use more nuclear or renewable energy

How can acid rain be managed?

Environmental Concerns

The warming of the Earth’s atmosphere, probably due to increased emissions of carbon

dioxide.

Global Warming

Greenhouse Effect

The Natural Resources Defence Council lists the following 9 consequences of climate change.

Warmer temperatures

More drought and wildfires

More intense rainstorms

More deadly heat waves

Increased spread of disease

More powerful & dangerous hurricanes

Melting glaciers

Sea level rise

Ecosystem changes and species die-off

Bangladesh is already prone to flooding, so rising water levels could devastate the country.

Rising temperatures worldwide would cause ski resorts to be wrecked as heat will melt the snow & ice there.

Water shortages in the Middle East would cause the River Nile to dry up due to intense evaporation.

Mediterranean beaches will vanish as water levels rise.

Sahara desert could move northwards, even as far as Spain.

Arctic ice cap melts.

Heavy storms not only threaten southern USA, but also the insurance companies in the area face bankruptcy.

Forests are damaged by heat and drought

Permafrost ground will melt, causing massive landslides. Oil pipelines, houses and road foundations will be disintegrated

Below are a list of things that could be done to try to tackle global warming.

Switch off lights & appliances

Taxes on high polluting industries

Choose energy efficient appliances

Sign up to the Kyoto Protocol

Recycle

Use less fossil fuels and more renewable energy sources

Use energy efficient transport

Car sharing

Improved public transport

Higher taxes on polluting cars

Grants for businesses that have clean policies

Energy efficient light bulbs

Offset carbon emissions

Local Holidays

The Kyoto Protocol

An international conference that took place in 1997 focussing on climate change.

Proposals:

• Compulsory reduction in CO2 emissions by 5% for MEDCs by 2010.

• LEDCs did not have to reduce emissions as they were still developing.

Problems

• US did not ratify the agreement – their emissions have increased by 3% a year since.

• LEDCs are now very industralised – China & India

• The reduction wasn’t big enough to have an effect – environmentalists suggest 60% reduction is necessary.

• Several MEDC even find it hard to meet the 5% target – due to costs – The UK emissions have increased by 5.5% between 1997 and 2005.

What is global warming

A) Global warming is the filling up of the earth’s atmosphere with pollution.

B) Global warming is the increase in the earths overall temperature.

C) Global warming is the hole in the earth’s atmosphere letting more heat in from the sun.

Why it is important to reduce the amount of carbon dioxide being released?

A) It is important to reduce the amount of CO2 because it is one of the greenhouse gases that is responsible for accelerating the natural greenhouse effect which is causing global warming.

B) It is important to reduce the amount of CO2 because it is one of the greenhouse gases that is responsible for causing a hole in the earth’s ozone layer which is causing global warming.

C) It is important to reduce the amount of CO2 because It is responsible for causing acid rain which erodes buildings.

Why the control of pollution needs to be agreed by many countries if it is to be successful

A) Pollution is a worldwide problem and can cross the borders of many countries so all countries need to work together to control pollution. An example of this is acid rain which has been caused by coal fired power stations in the UK but effects Sweden and Germany because of wind blown air pollution.

B) Pollution control needs to be agreed by many countries because the more countries controlling pollution the less pollution there is in the world.

C) If more countries agree to control pollution it means that global warming will stop and the ice caps will not melt. This will be good for us because it means that we will not have another ice age like in the film “The Day After Tomorrow”.

How else can we preserve resources and reduce pollution?

Resource Substitution

This is where you use one product in place of another one. For example using aluminium instead of tin cans as it is cheaper and easier to recycle.

Recycling Recovery of waste products by converting them into materials that can be used again. For example glass bottles, aluminium cans (only uses 5% of energy it takes to make them from scratch)

Energy Efficiency

Measures to reduce heat and energy loss. Individually this means switching off lights, using low energy light bulbs, insulating our homes. Also government has introduced building regulations and energy efficiency ratings on electrical products, more energy efficient cars – car in Europe is on average 90% cleaner than 10 years ago.

Reducing Pollution

Measures to stop emission reaching atmosphere or cleaning the emissions before they do. For example. fitting giant scrubbers on coal power stations, trying to switch from coal to gas power stations and fitting catalytic converters to cars.

Alternative Energy Sources

Energy sources that can be used instead of fossil fuels. These can include nuclear or renewable sources such as wind or solar.

How recycling can help reduce damage to the environment

A) Recycling old or waste products can help reduce damage to the environment by conserving the natural resources that are needed to make these products. Also, energy can be saved in recycling goods rather than make new goods from raw materials. An example of this is the recycling of old aluminium cans which only uses 5% of the energy required to make new cans from bauxite, it’s raw material.

B) Recycling means using alternative materials to make products. This saves both energy and natural resources. An example of this is the use of copper to make pipes for plumbing when lead became scarce. We have preserved our lead supplies and copper is also cheaper.

C) Recycling is good for the environment because it means that we are conserving valuable resources for the future. It also means that if we recycle we will use less energy by driving to take all our old products to the bottle and paper banks, than if we just threw these things in the bin and let the council sort the rubbish out for us.

ENERGY DEMANDS OF VARIOUS COUNTRIES LEADING TO FUEL EXPLORATIONS IN THE ANTARTICA!!!

Why there is an increasing demand for resources such as those found in Antarctica ?

A) Because Antarctica has lots of supplies of oil, coal and gas which other countries need.

B) There is an increased demand for the fossil fuels which Antarctica is believed to be rich in because the world’s known reserves of these resources are finite and will eventually run out. Society has come to be reliant on these resources to help meet their energy needs. Also, there is a huge demand for fish which could help to feed the growing populations of some countries.

C) Countries will eventually run out of some resources which are unsustainable, like fossil fuels. They can get these from Antarctica instead.

Renewable Energy Resources

Overview of renewable energy

Energy from a non-nuclear source. is in constant supply over time.

Renewable energy scenario in India

Promotion of renewable energy technologies.Create an environment conducive to promote

renewable energy technologies.Create an environment conducive for their

commercialization.Renewable energy resource assessment.Research and development, Demonstration

and Extension.Production of biogas units, solar thermal

devices, solar photovoltaics, cook stoves, wind energy and small hydropower units.

Sources of renewable energy

SUNWINDFLOWING WATERBIOMASSGEOTHERMAL ENERGY

Use of renewable sources of energy

heatheat electricityelectricity Vehicle fuelVehicle fuel

Water powerWater power yesyes

Biomass energyBiomass energy yesyes yesyes yesyes

Wind powerWind power yesyes

Solar energySolar energy yesyes yesyes

Geothermal energyGeothermal energy yesyes yesyes

SOLAR ENERGY

Solar energy is energy that comes directly from the sun. The sun is a constant natural source of heat and light, and its radiation can be converted to electricity.

Solar technologies

Solar electric

Solar water heating

Solar space heating

Solar electric

Energy from the sun can be directly converted to electricity using solar cells, also known as photovoltaics or PVs.

Advantages-pollution free-20-25 year warranty-used to offset utility power-stand-alone power for remote applications

Disadvantage- Costs 3-5 times more than utility power

Energy Payback Times for Photovoltaic Technologies

Energy payback time (EPBT) is the length of deployment required for a photovoltaic system to generate an amount of energy equal to the total

energy that went into its production.

The value of EPBT is dependent on three factors:

(i) the conversion efficiency of the photovoltaic system;

(ii) the amount of illumination (insolation) that the system receives (about 1700 kWh/m2/yr average for southern Europe and about 1800 kWh/m2/yr average for the United States); and

(iii) the manufacturing technology that was used to make the photovoltaic (solar) cells.

Solar Space Heating

Well-built passive solar homes offer: Better temperature control Bright day-lit spaces Lower energy bills

Requirements 1) Building layout must maximize passive solar gain (less used

areas on north side, etc.2) At least half of the window area must be facing within 30

degrees of due south.3) South window area greater than 7 to 9 percent of total floor

area.4) Average window U-factor not greater than 0.35 (area weighted).5)  South window Solar Heat Gain Coefficient (SHGC) at least 0.55

WIND ENERGY

Natural conditions of climate and geography produce the winds that blow across the landscape. Historically, windmills were used to supply mechanical energy, for example to pump water or grind grain. Modern day wind turbines produce electricity.

WATER

Snowmelt and runoff from precipitation at higher elevations flow toward sea level in streams and rivers. In an earlier era, water wheels used the power of flowing water to turn grinding stones and to run mechanical equipment. Modern hydro-turbines use water power to generate hydroelectricity.

BIOMASS ENERGY

Biomass is a renewable source of energy because the natural process of photosynthesis constantly produces new organic matter in the growth of trees and plants. Photosynthesis stores the sun´s energy in organic matter. Biomass is used to make heat, electricity and liquid fuels.

Biomass Energy.

Biomass is solar energy stored in organic matter.

The Department of Energy estimates that the total energy value of biomass fuel consumed in Oregon was 79 trillion Btu in 2003. This is about 10 percent of the total amount of non-transportation energy consumed in the state. Biomass supplies about 9 percent of all industrial energy consumed in the state

Consumption of Renewable Energy in the India 2002

Biomass Technology chart.

TechnologyTechnology Conversion Conversion process typeprocess type

Major Biomass Major Biomass FeedstockFeedstock

Energy or fuel Energy or fuel

producedproduced..Direct CombustionDirect Combustion Thermo chemicalThermo chemical Wood, agri waste Wood, agri waste

etc.etc.Heat, steam, elecHeat, steam, elec

GasificationGasification ThermochemiclThermochemicl Wood, agri waste, Wood, agri waste, solid waste.solid waste.

low or med Btu low or med Btu producer gas.producer gas.

PyrolysisPyrolysis ThermochemiclThermochemicl Same as aboveSame as above Synthetic fuel oilSynthetic fuel oil

Anaerobic Anaerobic digestiondigestion

BiochemicalBiochemical

AnaerobicAnaerobic

Animal Animal Manure,landfillsManure,landfills

Medium Btu Gas.Medium Btu Gas.

Ethanol Ethanol ProductionProduction

BiochemicalBiochemical

AerobicAerobic

Sugar, starch,pulp Sugar, starch,pulp etc.etc.

EthanolEthanol

Bio diesel Bio diesel ProductnProductn

ChemicalChemical Soy beans,animal Soy beans,animal fats.fats.

BiodieselBiodiesel

Methanol Methanol ProductionProduction

ThermochemicalThermochemical Wood, agri waste, Wood, agri waste, solid waste.solid waste.

MethanolMethanol

Biogas technology

Digester technology

Anaerobic digestion -a biochemical process in which particular kinds of bacteria digest biomass in an oxygen-free environment. Several different types of bacteria work together to break down complex organic wastes in stages, resulting in the production of "biogas.“

Requirements

An airtight chamber- DigesterTemperature-- at least 68 F-150 FClose monotoring and diligent

maintenanceBiogas – Mixture of carbon dioxide

and methane- 90%

GEOTHERMAL ENERGY

Heat from deep within the earth is called "geothermal energy."

Three types of power plants are used to generate power from geothermal energy: dry steam, flash, and binary.

Cont…..

Dry steam-steam out of fractures in the ground

Flash-steam from hot water usually at temp above 200 deg celcius.

Binary-the hot water flows through heat exchangers, boiling an organic fluid that spins the turbine

Ethanol as a fuel.

Ethanol has a higher octane than gasoline, but its energy content is only about two-thirds the energy content of gasoline.

Most new cars are designed to run on a blend of gasoline and ethanol.

"Gasohol" is a mixture of 90-percent unleaded gasoline and

10-percent denatured ethanol. With modification, spark ignition engines can run on 100-percent ethanol. E-85 fuel consists of 85-percent ethanol and 15-percent gasoline.

The major automobile manufacturers in the United States now produce flexible fuel vehicles that can use either E-85 fuel or gasoline.

Regulations of Hydro Projects.

Access to water and the use, control and diversion of water flows is subject to federal and state regulation. Other regulations apply to any physical alteration of a stream channel or bank that may effect water quality or wildlife habitat. 

The larger the system, the more complicated, drawn out, and expensive the permitting and approval process will be. Penalties for not having the permits or necessary approvals can be severe. Although the legal process may seem burdensome, the intention of the laws is to protect all users of the resource, including the plant, fish, and animal communities that utilize the water. 

When planning a hydroelectric system, your first point of contact should be the county engineer. He or she will be the most informed about what restrictions govern the development and/or control of water resources in your area. 

Regulations of Hydro Projects.

The two primary federal agencies that you will need to deal with are the Federal Energy Regulatory Commission (FERC) and the U.S. Army Corps of Engineers. Try contacting the nearest office to you to see if they will assist you; both may be listed in the U.S. government section of your phone book. 

FERC is responsible for licensing all non-federal government hydroelectric projects under its jurisdiction. You will need to consult with FERC in order to determine whether or not your project falls under FERC’s jurisdiction. If it does, then you will need to apply for a license or exemption from FERC. The FERC application process will require contacting and consulting other federal, state and local government agencies, and providing evidence that you have done so.

US Army Corp of Engineers  (engineer manuals)  You will also need to determine whether, and to what extent, you can divert water from the stream channel, and what restrictions apply to construction and operation of the system

Power production status of non-conventional energy in India

Renewable Power Potential Achieved

Wind Power 20,000 MW 1,000 MW

Small Hydro Power 10,000 MW 172 MW

Biomass 20,000 MW 141 MW

Solar photo-voltic Power 20 MW/sq.km 810 KW

Thanks!!!

Save Resources to use it in future!!!!!