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  2. 80 Plus - Wikipedia

    en.wikipedia.org/wiki/80_Plus

    80 Plus (trademarked 80 PLUS) is a voluntary certification program launched in 2004, intended to promote efficient energy use in computer power supply units (PSUs). Certification is acquirable for products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load, and a power factor of 0.9 or greater at 100% load.

  3. Johnson Controls - Wikipedia

    en.wikipedia.org/wiki/Johnson_Controls

    York International is the final name of a company started in York, Pennsylvania, US, in 1874, which developed the York brand of refrigeration and HVAC equipment. [74] The York brand has been owned since August 2005 by Johnson Controls, when it was sold to them for $3.2 billion.

  4. J. H. Hobbs, Brockunier and Company - Wikipedia

    en.wikipedia.org/wiki/J._H._Hobbs,_Brockunier...

    During the decade, furnaces were rebuilt and capacity was increased to a total of 32 pots. In 1879, one furnace was converted to use gas as its fuel, and it was considered the largest furnace in the United States. [46] About 350 people were employed at the works at that time. The company's goods were sold on four continents.

  5. Annual fuel utilization efficiency - Wikipedia

    en.wikipedia.org/wiki/Annual_fuel_utilization...

    The annual fuel utilization efficiency (AFUE; pronounced 'A'-'Few' or 'A'-'F'-'U'-'E') is a thermal efficiency measure of space-heating furnaces and boilers.The AFUE differs from the true 'thermal efficiency' in that it is not a steady-state, peak measure of conversion efficiency, but instead attempts to represent the actual, season-long, average efficiency of that piece of equipment ...

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  7. Codorus Forge and Furnace Historic District - Wikipedia

    en.wikipedia.org/wiki/Codorus_Forge_and_Furnace...

    The contributing buildings are the iron furnace (c. 1836), charcoal house (c. 1836), ruins of works' houses (c. 1836), ironmaster's house and furnace office (c. 1780), privy, forge (1800), and ruins of unknown structures. The furnace measures approximately 30 feet square at the base and 12 feet high.

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