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    Direct mixing and heat transfer take place in case of cooling tower while indirect mixing and heat transfer happens in heat exchangers.
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    Pumps basics
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    A cooling tower uses evaporative cooling for creating cooling media to be used for heat exchange. Cooling towers also have a lot of water conditioning operations viz. Blowdown, chlorination, water makeup etc A heat exchanger is of various types with a single purpose of energy exchange in terms of heat. It may have both latent and sensible or just sensible heat exchange.
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    Hello sampath For petro design use to ansys fluent software use to analysis all petro equipment body analysis of equipment & further knowledge then u go u tube search ansys fluent
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    59 downloads

    Two-Phase Gas-Liquid Systems (Saturation, Condensation, Vaporization)
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    9.1 - Gas–liquid and gas-liquid-solid reactions.ppt
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    In a chemical reactor, baffles are often attached to the interior walls to promote mixing and thus increase heat transfer and possibly chemical reaction rates.
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    Why the value of LMTD for counter flow is greater than parallel flow? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
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    In counter flow is thermally stable than parallel flow & less area to require to exchange the energy
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    Fauling means scaling on the inner or outer side of tube wall..due to increasing the scaling..resistance increase..If you think in common way then You can realize that heat transfer should be decrease by increasing the fauling..and in technical way ,the answers are already given in above comment
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    What is flaring in chemical plant? You can ▪ Answer this question ▪ Like the best answer ▪ Share to get more answers
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    Over all heat transfer decreases as increase in fouling factor ( scale).Due to increased scale there will be less heat transfer and hence the performance of heat exchanger lower...
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    What would be the impact if we increase or decrease the size of packing in packed column? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
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    Sustainability of Ethanol and Other Biofuels Sustainable H2 Production from Next Generation Nuclear Plants Fluorescent Tracing in Process Control Hospital Waste Management Microfluidics Membrane Bioreactor-An Excellent Option for Wastewater Treatment Modern Air Pollution Control Technologies New Polymerization Technology for Advanced Materials Processing of semiconductor materials Tidal Energy Harvesting Particle Reinforced Aluminium Matrix Composites Modern Air Pollution Control Technologies Biomass Fuelled Power Plant Recycling of Plastics Synthesis of Nanostructured Materials Fuel Cells and Sustainable Development Ozone in Water Treatment Particle Reinforced Aluminium Matrix Composites Phytoremediation Plant-made pharmaceuticals Membrane Bioreactors (MBR) Noise Pollution and Control in Chemical Industry Air permit Industrial PVC Formulation Fluorescence Spectroscopy Polarography Concentrating Solar Power Chemometrics Wind Power in France Biological Applications Of Macromolecules Fluorimetry Future for Next Generation of Nuclear Power Plants Radiation Processing of Polymers Inventory and Flow Control in Complex Process Networks Photon spectroscopy Polymer Processing Thermophotovoltaics Natural and Fabricated NanoBiomaterials Biomass for Carbon Sequestration Non-proliferation and Growth of Nuclear Fuels: Iran DLVO theory Safety in the Chemical Process Industry Nanoparticle Bonding Technology for Advanced Materials Universal Heat Mining Functional Genomics Solar Power Satellites Composite Materials Coal Bed Methane as NG Source Turbine Selection Issues for Wind Sequestration and Impacts on Carbon Trading Markets Supercritical Fluids Computational Fluid Dynamics Polymer Science and Engineering Hydrogen - Fuel for the Future? Recent Development Industrial Catalysis Chemical Weapons Processing Of Polymeric Materials Distributed Energy Generation Environmental Application of Supercritical Fluid Technology Cell Cultivation Microemulsion Polymerization
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    Version 1.0.0

    518 downloads

    Petroleum Refining Engineering-II Course outline 1. Simplified overall crude oil refinery picture 2. Major refinery products and tests: Brief description 3. Separation process: Atmospheric and vacuum distillations, lube oil extraction, dewaxing, deasphalting, and clay treatment. 4. Catalysts used in refinery operations 5. Conversion processes: Brief description of alkylation, polymerization, isomerization of light paraffins, hydrotreating, catalytic reforming, catalytic cracking, hydrocracking, visbreaking of resids, and coking. 5. Material and energy balances for refinery processes: Simulation of refinery processes 6. Design guidelines for the selected refinery equipment
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    Solvent Criteria One of the most important steps in developing a successful (economical) extractive distillation sequence is selecting a good solvent. Approaches to the selection of an extractive distillation solvent are discussed by Berg, Ewell et al. ,and Tassions. In general, selection criteria include the following : 1. Should enhance significantly the natural relative volatility of the key component. 2. Should not require an excessive ratio of solvent to nonsolvent (because of cost of handling in the column and auxiliary equipment. 3. Should remain soluble in the feed components and should not lead to the formation of two phase. 4. Should be easily separable from the bottom product. 5. Should be inexpensive and readily available. 6. Should be stable at the temperature of the distillation and solvent separation. 7. Should be nonreactive with the components in the feed mixture. 8. Should have a low latent heat. 9. Should be noncorrosive and nontoxic Naturally no single solvent or solvent mixture satisfy all the criteria, and compromises must be reached. Solvent Screening Perry's handbook serve as a good reference for the solvent selection procedure, which can be thought of as a two step process, i.e.: Broad screening by functional group or chemical family Homologous series : Select candidate solvent from the high boiling homologous series of both light and heavy key components. Robins Chart: Select candidate solvents from groups in the Robbins Chart that tend to give positive (or no) deviations from Raoult's law for the key component desire in the distillate and negative (or no) deviations for the other key. Hydrogen-bonding characteristic: are likely to cause the formation of hydrogen bonds with the key component to be removed in the bottoms, or disruption of hydrogen bonds with the key to be removed in the distillate. Formation and disruption of hydrogen bonds are often associated with strong negative and positive deviations, respectively from Raoult's Law. Polarity characteristic: Select candidate solvents from chemical groups that tend to show higher polarity than one key component or lower polarity than the other key. Identification of individual candidate solvents Boiling point characteristic: Select only candidate solvents that boil at least 30-40C above the key components to ensure that the solvent is relatively nonvolatile and remains largely in the liquid phase. With this boiling point difference, the solvent should also not form azeotropes with the other components. Selectivity at the infinite dilution: Rank the candidate solvents according to their selectivity at infinite dilution. Experimental measurement of relative volatility: Rank the candidate solvents by the increase in relative volatility caused by the addition of the solvent. Residue curve maps are of limited usefulness at the preliminary screening stage because there is usually insufficient information available to sketch the them, but they are valuable and should be sketched or calculated as part of the second stage of the solvent selection.
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    Will anybody please answer me the questions in the attached file| Subject:Reaction Engineering
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    How can we find any leakage in any tube in shell and tube heat exchanger? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  20. 1 like
    What is difference between heat and temperature? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
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    What is difference b/w Heat Exchanger & Cooling Tower?
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    Both equipment is based on phase change phenomenon . In heat exchanger use fast and stabilised the liquid to its general temperature but cooling tower use large section to exposed to liquid to gas phase phenomenon.
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    149 downloads

    Heat-exchange-equipment.ppt presentation
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    In HE heat transfer through conductions principle and in cooling tower heat transfer through convention principal.
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    By maintaining good quality of circulating water,avoiding dead flow zones by properly spacing the baffles & attending very quickly in case of any leak in the heat exchanger!
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    admin

    Air stripping

    From the album Chemical Engineering Images

    Air stripping is the transferring of volatile components of a liquid into an air stream. It is an environmental engineering technology used for the purification of groundwaters and wastewaters containing volatile compounds.
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    By using baffles we increase the turbulence of fluid and thus heat transfer coefficient increases. It also use to hold the tubes.
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    In counter flow the difference in temperature between hot fluid & cold is almost const. and so that heat transfer takes place longer but in case of parallel flow the difference in temperature continuously decreases so that transfer of heat decreases continuously.
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    Which is more efficient 1-1 or 2-2? And why? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
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    Yes simply fouling means scaling ...as increasing scaling on outer or inner side of tube wall , resistance to heat transfer increasing ..so due to that heat transfer deacreases..in another words ,scaling increasing -dirt factot increasing and overall HTC decreases due to that q heat transfer rate decreases
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    It depends on the compactness of molecules for its transfer. So, conduction would be faster than convection and radiation. Radiation will have least rate of heat transfer.
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    Since freezer is the source for coldness in refrigerators, when freezer is placed on top, the cold air produced from it is denser than the warmer air in the bottom. So cold air being dense sinks down and the warm air is forced to rise up so when the warm air rises up it and gets cold in the freezer.
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    What is unit operation? You can ▪ Answer this question ▪ Like the best answer ▪ Share to get more answers
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    How should i apply for internship in industry. As i am studing in private institute( b.tech chemical)...
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    Overall heat transfer which is the reciprocal of addition of reciprocals of individual heat transfer coefficient, decreases as the fouling factor increases. Fouling factor considers the scale formation inside the shell or the tube which is written as 1/hs. Scale formation can be due to sulphides, alkali metal salts, or oxides.
  37. 1 like
    What is the function of clearance volume in reciprocating air compressor? You can ▪ Answer this question ▪ Like the best answer ▪ Share to get more answers
  38. 1 like
    What are the factors that affect the manometric height of fluid being pumped? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  39. 1 like
    What would happen if refrigerator is left open? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  40. 1 like
    What is quasi fluid? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  41. 1 like
    In plate type heat exchanger, the pressure drop across two fluids are different for the same mass flow rate. What are the causes? How can it be solved? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  42. 1 like
    How can the latent heat of vaporization of steam be calculated? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  43. 1 like
    When we need pumps in parallel and pumps in series? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  44. 1 like
    What compounds are responsible for foul smell in wastewater plants? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  45. 1 like
    What is difference between fouling and scaling? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
  46. 1 like
    Why only even no. Of passes are used in shell and tube heat exchanger? You can ▪️ answer this question ▪️ like the best answer ▪️ share to get more answers
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    Please share about the project you have undertaken during your engineering education... or the one you are pursuing or want to take... lets make a list of interesting projects