A free stall heifer barn with 720 photovoltaic (solar panels), at Brubaker Farms makes it both a diary and green energy producer in Mount Joy, PA on March 19, 2011. The family farm owned by Luke, Mike and Tony Brubaker has approximately 850 cows and 700 young stock, producing 20,200,000 pounds of milk last year. It has 13 full-time employees and more than 1,500 acres of farmland. This heifer barn with it's 720 photovoltaic (solar panels), and two other buildings, have a total of 777 panels that produce 150 Kw of electrical energy. This was made possible with the help of the Dept. of Treasury.
Methane is used as a fuel for ovens, homes, water heaters, kilns, automobiles, turbines, etc. As the major constituent of natural gas, methane is important for electricity generation by burning it as a fuel in a gas turbine or steam generator. Compared to other hydrocarbon fuels, methane produces less carbon dioxide for each unit of heat released. At about 891 kJ/mol, methane's heat of combustion is lower than that of any other hydrocarbon, but the ratio of the heat of combustion (891 kJ/mol) to the molecular mass ( g/mol, of which g/mol is carbon) shows that methane, being the simplest hydrocarbon, produces more heat per mass unit ( kJ/g) than other complex hydrocarbons. In many areas with a dense enough population, methane is piped into homes and businesses for heating, cooking, and industrial uses. In this context it is usually known as natural gas, which is considered to have an energy content of 39 megajoules per cubic meter, or 1,000 BTU per standard cubic foot. Liquefied natural gas (LNG) is predominantly methane (CH4) converted into liquid form for ease of storage or transport.
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