humesh goyal

8/3/2019 HUMESH GOYAL

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PRESENTED BY:HUMESH GOYAL

80701509003

EE DEPTT.


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The Design

The main focus of the design is to build afeasible renewable base load power stationfor moderate climates like Canada and thenorthern U.S.A., Asia and Europe wherethere is high solar insolation during the

summer, but very cold temperatures andlittle daylight in winter.
http://www.shpegs.org/images/inso_temp_dem_800px.pnghttp://www.shpegs.org/images/inso_temp_dem_800px.pnghttp://www.shpegs.org/images/inso_temp_dem_800px.png


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This is a project to design and builda system that uses a combination ofdirect and indirect solar collection togenerate electricity and store

thermal energy in an economical,environmentally friendly, scalable,reliable, efficient and location

independent manner using commonconstruction materials.


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The project is being managed with a

similar methodology to Open SourceSoftware Development and theideas and contributions are beingpublished openly on the Internetwithout an attempt to secure patents


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The SHPEGS system attempts to usegeothermal storage and the cold winter

temperatures to build an electricalgeneration system that matches theelectrical usage load as closely aspossible.

To allow a geothermal system to belocation independent and to have thethermal source very close to the system, amassive solar water heater is built to heata very large amount of undergroundthermal storage during the summer

months


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Power is generated while heatingthis thermal storage in the summer

and becomes a very efficientgeothermal power system in thewinter due to the close location of

the thermal storage versus a deepgeothermal source and the coldwinter climate


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To improve performance of the solarthermal system, the solar heat isused to power a heat pump thattransfers a much larger amount of

heat from the warm summer air.The cold winter temperature allowsfor cooling a very large mass to sub-

zero temperatures in the winter andprovides efficiency in the summerpower generation


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How it WorksA tower is built to allow large

quantities of air to move acrossheat exchangers by naturalconvection due to buoyancy.

Solar thermal or deep geothermalheat is used to power a heat pumpwhich moves a much largeramount of heat from the air.

Both the heat from the air and theheat powering the heat pump arestored in shallow heat storage.


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The thermal storage is used to exploitthe difference in temperature changes

due to day time heating between the airand shallow underground, eitherday/night or seasonally. In effect thiscreates a local geothermal source and

the low media transfer energy allowsfor an efficient geothermal powergeneration system.

This source is reliable and may be usedfor base load electrical generation andstructure heating.


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The Concepts in More Detail

When the temperature of the air is changed

compared to the surrounding air, the densitychanges and it makes the air heavier or lighterthan the surrounding air and this causesconvection. Wind.

Matter that is more more dense takes moreenergy to change temperature than matter thatis less dense. The temperature of the earth

below the surface or in bodies of water changestemperature slower than the air does becausethey are more dense and they also take longerto cool off.


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To "capture" mechanical (electrical)energy from heat, heat has to be moved

from hot to cold. It doesn't matter wherethe heat is moving, but the mechanicalenergy captured is always a percentage

of the heat that is moved based on theabsolute temperature of the "cold" sink.

The more heat that moves between

matter and the larger the differencebetween the hot and cold sinks, the moremechanical (electrical) energy can becaptured.


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In an arctic climate

where there isaccess to mediumtemperature

geothermal a muchsimpler systemthan existing low-

boiling-point fluidsteam turbines canbe built with aconvection tower


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it is always a percentage of the heatbeing moved and the amount of energy

that can be converted is a function ofthe quantity and the difference intemperature between the hot and coldsource.

The difference between the cold sinkand absolute zero determines theefficiency of the system. Water flows

downhill with a force and heat movesfrom hot to cold with a force and bothrequire energy to reverse the process


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During day/night or seasonalchanges, there are substantialdifferences in temperature betweenthe earth and the air.

That difference in temperature canbe moved from hot to cold and someof that energy can be used to

generate electricit.


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Water freezes and the transport

media has to have a lower freezingpoint than the coldest ambient air tohave a location independent system.

If the thermal storage is either anatural or man-made undergroundsystem, it won't harm the

environment. Denser materials likerock or metals will hold even moreheat than water.


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The system is base load electricalgeneration. The solar energycollected is used to move a muchlarger amount of heat from the air.

The heat pump system can bepowered from multiple sources(solar, geothermal or waste heat).

This system will be available in sub-zero temperatures and can generateas much power when it is really cold

as when it is really hot.
http://www.shpegs.org/ammonia.htmlhttp://www.shpegs.org/ammonia.html


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Due to the reversible cycle, the

energy stored or removed from theearth is used in the opposing cycle.

The system should be scalable fromthe single dwelling or remote

equipment power source up to theMW grid project.


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The condensation on the coolingcoils may be used to provide a clean

domestic water source or forirrigation as a by-product during theair cooling cycle.

The system should operate in awide range of climates with the

limitation that there is sufficientsolar heat above ground level andsufficient thermal transfer below

ground level .


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Benefits The system is base load electrical

generation. The solar energy collected is used to

move a much larger amount of heat fromthe air.

The heat pump system can be poweredfrom multiple sources (solar, geothermalor waste heat).

This system will be available in sub-zerotemperatures and can generate as muchpower when it is really cold as when it isreally hot.
http://www.shpegs.org/ammonia.htmlhttp://www.shpegs.org/ammonia.html


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This system will be available insub-zero temperatures and cangenerate as much power when it isreally cold as when it is really hot.

Due to the reversible cycle, theenergy stored or removed from theearth is used in the opposing cycle.

The system should be scalablefrom the single dwelling or remoteequipment power source up to the

MW grid project.


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The system is "tuned". The more heattransferred through the heat pump,the more convection occurs. The moreconvection that occurs, the more heattransferred through the heat pump.

The more heat that moves the more

mechanical energy that can be"harvested" and converted toelectricity.

The condensation on the cooling coils

may be used to provide a cleandomestic water source or for irrigationas a by-product during the air coolingcycle.


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Economics

The physics of this design have notyet been in question, but theeconomics of the capital investment

has. In calculating the economics of non-

trivial renewable energy systems the

traditional study using currentmarket prices of goods and servicesis flawed.


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Our current economy is based on non-renewable energy and therefore it is a

large portion of the "cost" of goods andservices for common materials andconstruction.

Eventually non-renewable energysystems run out of supply or causedamage to the ecosystem and the "cost"

of damage to the environment is hiddenfor the short term comparison.


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our economy currently is not based onrenewable energy and until a

substantial portion of our energysupply is met by truly renewablesources, real world economics are very

important. The initial capital cost is largely

irrelevant if the energy output criteria is

met and the system is a maintainableand a renewable energy source.


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If a completely renewable systemcan be built from common materials

and can produce enough renewableenergy to build a like system withina reasonable length of time, it is

feasible.


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THANKS YOU

humesh goyal

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