A guy neer here has a house under ground.The house is built into a hill and has six foot of concrete overhanging the south of the house.Main source of heat is from the sun through the windows(south is the only windows).On top of the house is 6+ ft of dirt.All concrete well insulated,20 ft deep and 60 something long.He has a small amount of wood he heats with in winter,The over hang alows less direct sun in in the summer so house has no need of AC.Good high quality windows will keep out alot of cold and let in alot of heat.Front of house is 10 ft wall so the roof is sloped into the hill at 1ft on 10ft.I am planning on building something like it and useing small square bales of straw as insulation with concrete inside and out.once concrete is warmed up it holds heat for a long time so as the sun heats in the day hopefully it gives off heat at night. just one more of the million ideas out there to save money.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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