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Abstract Thermal analysis of a solid-liquid phase using cooling curves at various compositions is a method used to obtain the eutectic composition and temperature of naphthalene-biphenyl. The XE was 0.45 and the TE was 310.3K these are slightly different from the theoretical values which are 0.44 and 312K respectively. Results The cooling curves obtained from both groups Group A Group B The table with the mole fraction and the actual masses added. RUN | Group A | Group B | | Naphthalene
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A national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy National Renewable Energy Laboratory Innovation for Our Energy Future A Zero Carryover Liquid-Desiccant Air Conditioner for Solar Applications Preprint A. Lowenstein AIL Research‚ Inc. Conference Paper NREL/CP-550-39798 July 2006 S. Slayzak and E. Kozubal National Renewable Energy Laboratory To be presented at ASME International Solar Energy Conference (ISEC2006) Denver‚ Colorado
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ENERGY SAVING FACT SHEET Introduction Central building cooling options include water chillers and direct-expansion (DX) A/C units. Chillers use a refrigeration cycle to cool water to 42º F to 55º F for pumping to chilled water cooling coils. Air is then blown over the chilled water cooling coils to provide cool air to the conditioned space. DX systems also use a refrigeration cycle‚ but distribute refrigerant directly to DX cooling coils – some are packaged in a single housing‚ others are split
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consumption for a building in terms of heating and cooling requirements. In the introduction an overview of major energy policies is given as well as a foundation for residential energy efficiency improvements and a description of the key components in other eco-cities. A baseline and two scenarios with different energy performance were created in the modeling software DesignBuilder to calculate the energy consumption for heating and cooling. It resulted in three levels of energy consumption were
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PRL 106‚ 081101 (2011) Selected for a Viewpoint in Physics PHYSICAL REVIEW LETTERS week ending 25 FEBRUARY 2011 Rapid Cooling of the Neutron Star in Cassiopeia A Triggered by Neutron Superfluidity in Dense Matter Dany Page‚1 Madappa Prakash‚2 James M. Lattimer‚3 and Andrew W. Steiner4 ´ ´ ´ Instituto de Astronomıa‚ Universidad Nacional Autonoma de Mexico‚ Mexico D.F. 04510‚ Mexico 2 Department of Physics and Astronomy‚ Ohio University‚ Athens‚ Ohio 45701-2979‚ USA 3 Department of Physics and Astronomy
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March 2011 Special Report Valuing Water: HoW Can Businesses Manage tHe CoMing sCarCity? http://environment.wharton.upenn.edu • http://knowledge.wharton.upenn.edu sponsors The Initiative for Global Environmental Leadership (IGEL) and Knowledge@ Wharton have partnered to create this special report on business and the environment. We are most grateful to the Xerox Foundation for supporting collaboration and funding of this edition. Contents Valuing Water: How Can Businesses Manage
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Energy Efficient Buildings Internal Heat Gains and Design Heating & Cooling Loads Internal Heat Gains People and electrical equipment in buildings give off heat. These internal heat gains must be included in energy balances on the building or zone to determine the net heating or cooling load. Heat Gain From People Typical sensible‚ latent and total heat rates given off by people are shown in the table below (ASHRAE Fundamentals‚ 2005). The sensible heat gain results from radiation and
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Synopsis Major data centers need a large amount of energy to power and maintain. There are two costs components of energy at a data center: Cooling and running computers. The EPA estimated that data centers in the United States used about 12 gig watts of power‚ which is equal to the output of twenty-five major power plants in 2011. By 2020‚ in estimation‚ the world’s computer servers will either match or exceed the carbon emissions of the airline industry. Case Study Questions 1. PUE stands
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Calculation Basis of Air Conditioning CO2 Emission 1 Burning 1 kg of standard coal produces about 2.93 kg of CO2 Type and producing area of the coal leads to the difference of heat value and carbon content. In China‚ usually the carbon content of coal is from 45% to 85%. In China‚ it is provided that the heat value of standard coal is 7‚000 Kcal/kg‚ carbon content is about 80%‚ CO2 emission of the 1 kg standard coal should be: molecular weight of CO2/ atomic weight for the element of C *
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