SOLAR ENERGY IN BUILDINGS ARE 440SOLAR ENERGY IN BUILDINGS ARE 440

Lecture by: Sabeer HamidArchitectural Engineering Department

Lecture by: Sabeer HamidArchitectural Engineering Department

ARE 440 Solar Energy in Buildings 1

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World Energy StatisticsWorld Energy Statistics

Most of the world’s energy comes from nonrenewable resources, such as oil, coal, and natural gas.

Most of the world’s energy comes from nonrenewable resources, such as oil, coal, and natural gas.

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Detailed StatisticsDetailed Statistics

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Increasing Energy ConsumptionIncreasing Energy Consumption

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The World Energy Consumption is increasing at an alarming rate

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Detailed Energy StatisticsDetailed Energy Statistics

The country wise energy consumption since last 20 years is shown in the file below:The country wise energy consumption since last 20 years is shown in the file below:

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ENERGY OUTLOOKStatistics

Worksheet.

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Energy in Saudi ArabiaEnergy in Saudi Arabia

Saudi Arabia has the largest oil & gas reserves in the world

Saudi Arabia has the largest oil & gas reserves in the world

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Consumption is comparatively high.

Consumption is comparatively high.

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Energy Consumption By SectorEnergy Consumption By Sector

Buildings consume a lot of energy.Buildings consume a lot of energy.

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Detailed Analysis of the sector-wise consumption of energy.

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SOLAR ENERGYSOLAR ENERGY

In today's climate of growing energy needs and increasing environmental concern, alternatives to the use of non-renewable and polluting fossil fuels have to be investigated. One such alternative is solar energy.

Solar energy is quite simply the energy produced directly by the sun and collected elsewhere, normally the Earth. The sun creates its energy through a thermonuclear process that converts about 650,000,000 tons of hydrogen to helium every second. The process creates heat and electromagnetic radiation. The heat remains in the sun and is instrumental in maintaining the thermonuclear reaction. The electromagnetic radiation (including visible light, infra-red light, and ultra-violet radiation) streams out into space in all directions

In today's climate of growing energy needs and increasing environmental concern, alternatives to the use of non-renewable and polluting fossil fuels have to be investigated. One such alternative is solar energy.

Solar energy is quite simply the energy produced directly by the sun and collected elsewhere, normally the Earth. The sun creates its energy through a thermonuclear process that converts about 650,000,000 tons of hydrogen to helium every second. The process creates heat and electromagnetic radiation. The heat remains in the sun and is instrumental in maintaining the thermonuclear reaction. The electromagnetic radiation (including visible light, infra-red light, and ultra-violet radiation) streams out into space in all directions

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Solar Energy ConversionSolar Energy Conversion

Solar energy can be extracted by converting it from one form to another such as:

Thermal Conversion: Sun facing surfaces transfer part of energy absorbed to a working fluid, however heat loss is a major factor.

Photo-voltaic Conversion: Conversion of solar energy into electrical energy using solar cells, efficiency & high initial cost is major concern [25% efficiency with overall system efficiency if 10 to 14%].

Biological Conversion: Similar to photosynthesis, recycling organic waste.

Solar energy can be extracted by converting it from one form to another such as:

Thermal Conversion: Sun facing surfaces transfer part of energy absorbed to a working fluid, however heat loss is a major factor.

Photo-voltaic Conversion: Conversion of solar energy into electrical energy using solar cells, efficiency & high initial cost is major concern [25% efficiency with overall system efficiency if 10 to 14%].

Biological Conversion: Similar to photosynthesis, recycling organic waste.

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Solar Energy ConversionSolar Energy Conversion

Solar energy can be extracted by converting it from one form to another such as:

Wind Power: Mechanical energy converted into electrical energy.

Ocean Energy Conversion: Using oceanic temperature gradient or generating energy through ocean waves.

Solar energy can be extracted by converting it from one form to another such as:

Wind Power: Mechanical energy converted into electrical energy.

Ocean Energy Conversion: Using oceanic temperature gradient or generating energy through ocean waves.

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Availability of Solar EnergyAvailability of Solar Energy

Irradiance: The amount of Solar Radiation falling on a surface per unit area per unit time.

The mean extraterrestrial irradiance normal to the solar beam on the outer fringe of earths atmosphere is 1.35 kW/m2

Radiant energy is distributed within a particular range of wave length

Energy falling on unit area per unit time within a particular spectral band is known as spectral irradiance W/m2/m.

Irradiance: The amount of Solar Radiation falling on a surface per unit area per unit time.

The mean extraterrestrial irradiance normal to the solar beam on the outer fringe of earths atmosphere is 1.35 kW/m2

Radiant energy is distributed within a particular range of wave length

Energy falling on unit area per unit time within a particular spectral band is known as spectral irradiance W/m2/m.

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Solar Spectral Irradiance CurveSolar Spectral Irradiance Curve

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Limitations due to Varied Global Irradiance LevelsLimitations due to Varied Global Irradiance Levels

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Thank youThank youThank youThank you

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