Energy Efficiency in Swimming Pool Facilities By Tony El Kehdy Samer Najjar Tony Sawan A report submitted to the Department of Mechanical Engineering in partial fulfillment of the requirements of the degree of Bachelor of Science in Mechanical Engineering Faculty of Engineering University of Balamand February 2014 Copyright © 2014 Tony El Kehdy, Samer Najjar, and Tony Sawan All rights reserved University of Balamand Faculty of Engineering This is to certify that
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Rules of thumb for climate change turned upside down: Wet and dry regions recalculated Date: September 14, 2014 Source: ETH Zurich Summary: With a new analysis of land regions, climate researchers are challenging the general climate change paradigm that dry regions are getting drier and wet regions are getting wetter. In some regions they are encountering divergent trends. Share This Email to a friend Facebook Twitter LinkedIn Google+ Print this page With a new analysis of land
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) Homogeneous Matter In 1 phase Even distribution of material throughout the sample 1) Homogeneous Mixture (Solution) Properties of materials vary You can separate the components physically Ex) Evaporation, Distillation 2) Pure Substance a) Elements Simplest form of matter Made up of one kind of atom Can’t be decomposed chemically I) Metals Luster Malleability (Strong Bonds) Ductile (Ability to draw into wire) Good conductors of heat/electricity
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51). To extract lithium from brines, the salt-rich waters are pumped and into a series of evaporation ponds where solar evaporation occurs at high altitudes over a number of months. In contrast, lithium that is extracted from mineral ore sourced, mainly spodumene, in Australia, for example, crushes and heats the ore for decrepitation. Then, the spodumene concentrate
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electrospray ionization the sample is dissolved in into a fine aerosol. Because the ion formation involves extensive solvent evaporation, the typical solvents for electrospray ionization are prepared by mixing water with unstable organic compounds. The aerosol is sampled into the first vacuum stage of a mass spectrometer through a tube, which can be heated to aid further solvent evaporation from the charged droplets. The solvent evaporates from a charged droplet until it becomes unstable
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------------------------------------------------- Thermal pollution Thermal pollution is the degradation of water quality by any process that changes ambient water temperature. A common cause of thermal pollution is the use of water as a coolant by power plants and industrial manufacturers. When water used as a coolant is returned to the natural environment at a higher temperature, the change in temperature decreases oxygen supply, and affects ecosystem composition.Urban runoff–stormwater discharged
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Airmass : Meaning and Characteristics “An air mass may be defined as a large body of air whose physical properties, especially temperature, moisture content, and lapse rate, are more or less uniform horizontally for hundreds of kilometres.” According to A N Strahler and A. H. Strahler: “a body of air in which the upward gradients of temperature and moisture are fairly uniform over a large area is known as an air mass.” * An air mass may be so extensive that it may cover a large portion
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Matter and materials Lijani van Wyk de Vries Matter and materials Effects of intermolecular forces on physical properties A. Effects of intermolecular forces on evaporation: ------------------------------------------------- Investigative Question What is the relation between intermolecular forces and evaporation, and what are the effects thereof? ------------------------------------------------- Hypothesis I think water will have the highest vapour pressure, and acetone the lowest
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Macromolecular Rapid Communications Communication Forming of Polymer Nanofibers by a Pressurised Gyration Process Suntharavathanan Mahalingam, Mohan Edirisinghe* A new route consisting of simultaneous centrifugal spinning and solution blowing to form polymer nanofibers is reported. The fiber diameter (60–1000 nm) is shown to be a function of polymer concentration, rotational speed, and working pressure of the processing system. The fiber length is dependent on the rotational speed. The process
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Ethyl acetate Starch structure Naoh Appearance:Clear, colorless solution.Odor:Odorless.Solubility:Miscible in water.Density:5% solution: 1.05pH:14.0Boiling Point:102C (216F) (5% solution)Melting Point:-4C (25F) (5% solution)Label Hazard Warning:DANGER! CORROSIVE. HARMFUL IF SWALLOWED OR INHALED. CAUSES BURNS TO ANY AREA OF CONTACT. REACTS WITH WATER, ACIDS AND OTHER MATERIALS.Label Precautions:Do not get in eyes, on skin, or on clothing.Do not breathe mist.Keep container closed.Use only
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