RAJASTHAN TECHNICAL UNIVERSITY, KOTA UNVERSITY COLLEGE OF ENGINEERING, KOTA

GUIDED BY :- SUBMITTED BY :- DR.RAJESH SINGHAL NILESH PARETA

SEMINAR ON

RENEWABLE RESOURCES

CONTENT

• 1. INTRODUCTION •  • 2. MODULE OBJECTIVES

• 3.LEARNING OUTCOMES • • 4. OVERVIEW OF RENEWABLE

ENERGY TECHNOLOGIES • 4.1. Wind energy • 4.2. Solar energy • 4.3. Bioenergy • 4.4. Hydro Power

4.5. Geothermal energy

• 5. ADVANTAGES AND DISADVANTAGES

• 6. BARRIERS AND ISSUES • 7. CONCLUSION • • 8.REFERENCES

INTRODUCTION

An outline and brief description of the different renewable energy technologies,Wind energy. Solar energy. Bio energyHydro powerGeothermal energy.

General overview of the technologies and applications.

Common barriers and issues limiting wide spread use/dissemination

OBJECTIVES

• Enable understanding of renewable energy in the broadest terms • Present the different technology of renewable resources

• Provide an overview of the technologies and their applications

• Show the strengths and weaknesses of all renewable resources

LEARNING OUTCOMES

• To be able to define the different key technologies

• To have a broad appreciation of potential applications

• To understand the strengths and weaknesses, hence to have a grasp of the benefits

• To understand the outline costs of different technologies

OVERVIEW OF RENEWABLE ENERGY TECHNOLOGIES

• WIND ENERGY• A wind turbine produces power by converting the force of the

wind (kinetic energy) acting on the rotor blades (rotational energy) into torque (turning force or mechanical energy). This rotational energy is used either within a generator to produce electricity.

STRENGTHS AND WEAKNESSES OF WIND ENERGY SYSTEMS

STRENGTH:-• Automatic operation with low maintenance requirements• No fuel required (no additional costs for fuel nor delivery logistics)

• Environmental impact low compared with conventional energy sources

WEAKNESS:-• Site-specific technology (requires a suitable site)

• Variable power produced therefore storage/back up required.

SOLAR ENERGY

• Solar energy has several applications: photovoltaic (PV) cells are placed on the roof top of houses or commercial buildings, and collectors such as mirrors or parabolic dishes that can move and track the sun throughout the day are also used.

STRENGTHS AND WEAKNESSES OF SOLAR ENERGY SYSTEMS

• STRENGTH:-• Automatic operation with very low maintenance requirements• No fuel require• The solar system is an easily visible sign of high level of

responsibility, environmental awareness and commitment• d (no additional costs for fuel or delivery logistics

WEAKNESS:-• Performance is dependent on sunshine levels and local weather

conditions• High capital/initial investment costs• Specific training and infrastructure needs

BIOENERGY

Bioenergy is a general term that covers energy derived from a wide variety of material of plant or animal origin. Strictly, this includes fossil fuels but, generally, the term is used to mean renewable energy sources such as wood and wood residues, agricultural crops and residues, animal fats, and animal and human wastes.

STRENGTHS AND WEAKNESSES OF BIO ENERGY SYSTEMS

• STRENGTH:-• Conversion can be to gaseous, liquid or solid fuel• Environmental impact low (overall no increase in carbon dioxide)

compared with conventional energy sources• Fuel production and conversion technology indigenous in

developing countries

• WEAKNESS:-• Often large areas of land are required (usually low energy density)• Production can have high fertilizer and water requirements• Resource production may be variable depending on local climatic/weather

effects, i.e. drought.

HYDRO POWER

• Hydropower is the extraction of energy from falling water (from a higher to a lower altitude) when it is made to pass through an energy conversion device, such as a water turbine or a water wheel.

STRENGTHS AND WEAKNESSES OF HYDRO POWER

• STRENGTH:-• Automatic operation with low maintenance requirement• No fuel required (no additional costs for fuel or delivery

logistics)• Power is available at a fairly constant rate and at all times,

subject to water resource availability

• WEAKNESS:-• Droughts and changes in local water and land use can affect power output• High capital/initial investment costs• Engineering skills required may be unavailable/ expensive to obtain locally•

GEOTHERMAL

• Energy available as heat from the earth• Usually hot water or steam• High temperature resources (150°C+) for electricity generation• Low temperature resources (50-150°C) for direct heating: district heating, industrial processing• No problems of intermittency

ADVANTAGES OF RENEWABLE ENERGY 

• ADVANTAGES :- One major advantage with the use of renewable energy is

that as it is renewable it is therefore sustainable and so will never run out.

renewable energy produces little or no waste products such as carbon dioxide or other chemical pollutants, so has minimal impact on the environment.

Renewable energy projects can also bring economic benefits to many regional areas, as most projects are located away from large urban centers and suburbs of the capital cities.

DISADVANTAGES OF RENEWABLE ENERGY

• One disadvantage with renewable energy is that it is difficult to generate the quantities of electricity that are as large as those produced by traditional fossil fuel generators.

• Another disadvantage of renewable energy sources is the reliability of supply. Renewable energy often relies on the weather for its source of power. Hydro generators need rain to fill dams to supply flowing water. Wind turbines need wind to turn the blades, and solar collectors need clear skies and sunshine to collect heat and make electricity.

BARRIERS AND ISSUES

• • TECHNICAL ISSUES:-

Design and installation skills Quality control and warranties Maintenance and after-sales service Training Local technical infrastructure development

• • NON-TECHNICAL ISSUES:- Awareness Policy/regulatory issues Institution capacity-building for micro-finance Community involvement

CONCLUSIONS

Renewables can be used for both electricity and heatgeneration. There is a wide range of renewable energytechnologies suitable for implementation in developingcountries for a whole variety of different applications.

Renewable energy can contribute to grid-connectedgeneration but also has a large scope for off-gridapplications and can be very suitable for remote and ruralapplications in developing countries.

REFERENCES

• Renewables 2005: Global Status Report, REN21 Network Report, 2005

• Renewable energy technologies book• Wikipedia• www.esha.be.

THANK YOU