A Seminar Report On Working Principal of Steam jet refrigeration system Submitted by Amit Prakash Roll No-1126004 Department of Mechanical Engineering National Institute of Technology‚ Patna Patna-800005‚ Bihar (India)
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Abstract: Today medicinal plants with their respective standardized extracts‚ provide infinite opportunities for new drug leads because of the unrivaled availability of chemical diversity. Due to an increasing demand for chemical diversity in screening programs‚ seeking therapeutic drugs from biologically active plants. The propose of green and sustainable extraction methods of natural products is currently a hot research topic in the multidisciplinary area of applied chemistry. The focus of this
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REFRIGERATION AND AIR CONDITIONING 1. DEFINATION OF REFRIGERATION Refrigeration is defined as “ the branch of science that deal with the process of reducing and maintaining the temperature of confined space or material below the temperature of surrounding” the system maintain at lower temperature is known as refrigerated system and equipment used to obtain this is known as refrigerator. The cooling effect produced by this equipment is the refrigerating effect. 2. PRINCIPLE OF REFRIGERATION
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A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle. A vapor-compression water chiller comprises the 4 major components of the vapor-compression refrigeration cycle (compressor‚ evaporator‚ condenser‚ and some form of metering device). These machines can implement a variety of refrigerants. Adsorption chillers use municipal water as the refrigerant and benign silica gel as the desiccant. Absorption chillers utilize water as the refrigerant
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working of each and every part in La Mont boiler one by one. Steam separator drum The la Mont boiler consists of a steam separator drum which is placed wholly outside the boiler setting . The drum receives a mixture of steam and water from the evaporator tubes and feed water from the economizer. The steam is separated from water in the drum. Circulating pump The water from the drum is then drawn to the circulating (centrifugal) pump through the down-comer. The pump circulates water (“forced circulation”)
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on and off: Cycling scroll Compressors Slide Valve Inlet vanes Variable Speed: Condenser Refrigeration Cycle Air Cooled Condensers Effect of Sub cooling Types of Air – cooled condensers Evaporator condenser Water Cooled Condensers Description of Air Cooled condensers Centrifugal fan air cooled condenser Condensers Static Evaporative Condensers Water cooled Condenser Classification based on construction Tube
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Applied Heat past Examination Questions 1. An Ammonia refrigerator is to produce 2 tonne of ice per day at -4°C from water at 20°C. if the temperature range in the compressor is between 25°C and -6°C‚ Calculate horse power required to derive the compressor. Latent Heat of ice = 80 kcal/kg‚ and specific heat of ice= 0.5 2. A compressor draws 42.5 m3 of air per minute in the cylinder‚ at a pressure of 1.05 kg/cm abs. It is compressed Polytropically pV1.3=C to a pressure 4.2
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Introduction: Process Involved: Process 1-2 Isentropic Compression Process 2-3 Constant Pressure heat rejection Process 3-4 Isenthalpic process therefore; Process 4-1 Constant Pressure heat absorption inside the evaporator Coefficient of Performance is given by; Some factors that affect the Coefficient of Performance of the refrigeration are; Sub Cooling of liquids Superheating of Vapor (May be constant‚ increase or decrease) Change in suction pressure
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Basic Refrigeration Cycle Reversed Carnot Cycle Reversed Carnot Cycle Refrigeration Cycle Dr. M. Zahurul Haq Professor Department of Mechanical Engineering Bangladesh University of Engineering & Technology (BUET) Dhaka-1000‚ Bangladesh zahurul@me.buet.ac.bd http://teacher.buet.ac.bd/zahurul/ ME 415: Refrigeration & Building Mechanical Systems e720 Coefficient of Performance‚ COP = TL QL = Wnet TH − TL ME 415 (2011) 2 / 14 c Dr. M. Zahurul Haq (BUET) Refrigeration Cycle Reversed
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A Literature Survey of Ice Cube Maker History‚ Designs‚ and Components Team Lead: Jacob Henson Table of Contents List of Figures 2 Introduction 3 History 3 Icemaker Components 4 Conclusion 11 References 12 List of Figures ------------------------------------------------- Figure Number and Description Page # Figure 1. Vapor Compression Refrigeration Cycle 5 Figure 2. General Icemaker Components 6 Figure 3. Rotating Ice Maker 7 Figure 4. Alternative Rotating
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