The Energy Matrix
A Science Ebook e-zine
 
Spring 200
9  
List of all editions

CHP AND DG


The energy matrix examines the full spectrum of future energy sources and associated problems.  It is meant to be a thought provoking publication for students who will be our future technocrats, engineers, and physicists.  We will include concepts such as solar, DG, CHP and concepts that are not practical today such as ice engines.  Send Comments to BilPat4342@AOL.com

 


Go to Summer 2007 Edition

Green Stimulus Package

President Barack Obama has said that he wants to fund projects that promote green or alternative energy starting day one of his administration. New Green Energy projects like transmission lines for Wind or Solar power will take years to plan and litigate.  No one wants power transmission lines in their back yard even if the back yard is the desert.  

This article is not about the controversies surrounding alternative energy.  However, recognizing that the bickering will continue makes it clear that only old technology that is already in use, can provide employment for those who are out of work.  Yet, I never hear of these projects in the mass media or in political debates. Yet their are many old proven technologies that save energy and can reduce energy consumption or produce more energy. 

The best projects to fund on day one are the ones that were started yesterday.    

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Corn Solar Collectors

The United States is looking at ethanol from corn as a renewable source of energy. The ethanol gets its energy from corn and the corn gets its energy from the sun.
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Ice from Coal ( Alchemy?)

No, this article is about thermodynamics not alchemy.  Most people get their ice cubes from coal and water.  That is they get the electric power that turns water to ice from coal powered electric power plants.

At this point, I hope you anxious to know how many pounds ice can be made from a pound of coal, because I am going to tell you. 
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Storing Carbon Dioxide
 
Though the effects of green house gases are debatable ( if you disagree you make my point), one effect is certain the cost of generating electricity from fossil fuels is going up. This is not debatable because utilities have already spent money storing fossil gases and continue ...
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There are two "T" in Carnot
Thigh and Tlow
End Joke
Not Funny? Try to forget it.

 

Heat Storage and Carbon Dioxide.

Though much about carbon dioxide storage has yet to be determined, three things are certain, that is that these stores will be huge, dense, and have temperature. The quantity of carbon dioxide that will be stored will necessitate high compression, huge volumes, and useful temperature.  The reason I say that the temperature will be useful is that there is such a large range of temperature that could be useful. A store of dense gas at twenty degrees Centigrade above room temperature would be used by a CO2/Air radiator for room heating. Stored CO2 at twenty degrees centigrade below room temperature might work well for direct cooling  (blowing air over  tubes with circulating dense cold CO2). Circulation of dense CO2  at or near room temperature would be great source of heat for the evaporator of a heat pump in heating mode.  CO2 at the same temperature would a great source of cooling of a heat pump condenser when the heat pump was operating in cooling mode..

Above ground insulated tanks of CO2 could be used for peak heat of day heat storage for heating, or they could be used to store the cool of the night as a heat sink for cooling systems during the peak usage hours of the day.

 

Index for all Editions

Cogeneration

Combined Heat & Power (CHP) 

DC Power Grid

District Cooling

Ethanol Viability

Hybrid Cars

Ice made with Coal

Ice Energy Density versus Battery

Heat Storage

HVDC

Nuclear Energy

Solar Heat Storage in CO2

Solar Heat Storage in Water

Storing Carbon Dioxide

Stoves - Corn Burning

Stoves - Wood Pellet Burning

Stoves - Coal Burning

Tar Sand Oil

Waterfalls

Yucca Mountain

Substituting Coal for Diesel

Compact Fluorescent Lights

 

 

 

 

 

 


 

CHP and DG

 

CHP - Combined Heat and Power  
Large American Utility Power Plants Convert the energy of Coal, Natural Gas and even Diesel and convert about one third of it to electricity, and dump two thirds into rivers or into atmosphere as waste heat.  Smaller Scale Combined Heat and Power plants located in hospitals or other commercial facilities produce electricity from a natural gas turbine  and use the waste heat for heating buildings and water.  Some heat still escapes via the chimney or heat exchanger but well over half the waste heat is collected.  Thus, over twice the Btu from the natural gas is used.  Diesels engines can also produce combined heat and power.  Coal could also be used to produce Combined Heat and Power but this would require more smoke stacks in our the city and would not likely be tolerated. CHP facilities will electricity until their heating needs are met, thus they frequently produce more electricity than they can use.  Thus, they like to sell their excess power to the Utility.  This transforms the power grid in Distributed Generation system. 

DG - Distributed Generation

A DG system collects electricity from CHP's, Solar, and Wind systems and places it on the power grid. The AC collected must  be correct in frequency an phase.

Go to Summer 2007 Edition to read more on this topic

 

District Cooling in Europe

The city of Amsterdam has an operating district cooling system.  Heat is dumped into a man made lake at depth of 30 meters.  Water is taken into heat exchanger at 6 degrees centigrade and returned...   

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U.S Congress to Investigate High Cost of Gasoline. ( 5-22-07)

They may not have to search very far.  In Brazil the majority of cars run on Flex fuel or pure ethanol.  In the United States less than a thousand gas stations sell flex fuel.  They are mostly in the Midwest where ethanol is produced from corn.  Brazil wants to export ethanol to us by ship.  They could supply ethanol to east coast and Gulf ports.  However, congress has placed a 54 cent per gallon  tariff on ethanol imports.

If populist congressmen really want to lambaste the oil companies, they should lambaste the oil companies for not placing  more flex fuel pumps in east coast gas stations.  Oh, but tariffs are cutting off the supply of ethanol to the east coast, so the pumps would not have much to pump.

     

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Send Comments to BilPat4342@AOL.com