An entire chapter is devoted to the topic of uprerating of compressors, which i find particularly suitable for an application engineer. Introduction to fluid machines and compressible flow nptel. Air compressors cast air castair offers all cast iron heavyduty air compressors, ranging from 34 to 200 h. Moocnptel online courses etc, a satisfactory participation certificate from the. History from compressor development point of view lowspeed steam engine driven compressors highspeed electric motor driven compressors rotary vane compressors centrifugal compressors screw compressors scroll compressors history of air conditioning module 2. Its purpose is to support teaching and research activities. They can be either stationary or portable, can be single or multistaged, and can be driven by electric motors or internal combustion engines. Base on the handbook, the nichrome resistance should be used. Centrifugal compressors are often used in sizes ranging from about 150 hp up to over 10,000 hp. To find a simple analytical model for centrifugal compressors in turbochargers why. Nptel national programming on technology enhanced learning nptel is an initiative of the seven indian institutes of technology iit bombay, delhi, guwahati, kanpur, kharagpur, madras and roorkee and indian institute of science bangalore iisc for creating. With suitable port connections, the devices may be either a compressor or a vacuum pump.
Click here for step by step procedure for accessing nptel lectures click here. Download limit exceeded you have exceeded your daily download allowance. This is a questionnaire with answers that covers all the modules and could be attempted after listening the full course. This seminar will discuss a quick method to draw inlet and outlet velocity diagrams for axialflow compressors and turbines directly using their key performance parameters. Bog screw compressor package unit boil off gas compression bog compressor is commonly found in natural gas chemical industry used for extraction of boil off gas bog from lng tanks. For a cylinder 10 cm in diameter, the time required for a pressure disturbance. The performance aspects of ideal reciprocating compressors with clearance, specifically. Multiscale methods have been an important aspect in the field of engineering.
Lower energy cost, small size suitable for continuous operation 247, low efficiency. Bog screw compressor package unit boil off gas compression. Cast air is excellent middle of the road compressor, ranging from garage duty up to light industrial. Mechanical engineering malla reddy engineering college. We share your passion for learning and are committed to helping students reach their full potential. Nptel national programming on technology enhanced learning nptel is an initiative of the seven indian institutes of technology iit bombay, delhi, guwahati, kanpur, kharagpur, madras and roorkee and indian institute of science bangalore iisc for creating video and web course contents in engineering and science. Nov 05, 2016 iit kharagpur notes converted into high quality audio source nptel. Browse the worlds largest ebookstore and start reading today on the web, tablet, phone, or ereader.
Mcgraw hill india where the science of learning meets the art of teaching. Positive displacement compressors cab be further divided into reciprocating and rotary compressors. Please see all the questions attached with the last module. Spatial multiscale methods are used extensively for the determination of quantities of interest for heterogeneous continua, especially for alloys, porous media, composites and such others. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Vtu nptel nmeict project progress report the project on development of remaining three quadrants to nptel phasei under grant in aid nmeict, mhrd, new delhi. Manual purpose to be used for selection, application into the system, power and cooling water estimation. Types of compressors centrifugal compressors for low p compressor is a machine used to compressed air or gas to a final pressure exceeding 241. It is the volume of air delivered by the compressor, and is expressed in m3min or m 3s. Buy nptel course dvds by iits and iisc, prepare for gate.
The capacity of a compressor is generally given in terms of free air delivery. National programme on technology enhanced learning nptel is a project of mhrd initiated by seven indian institutes of technology bombay, delhi. Beta machinery analysis is a trusted global authority in vibration analysis of piping systems, compressors, pumps and other dynamic loads s. Answer zahid akhtar centrifugal compressor surge is seen as a very dangerous and detrimental phenomenon in compressed air systems, dangerous because it causes the compressor to vibrate and detrimental because it causes damage to the compressor parts. Refrigeration and airconditioning nptel online videos. Learn for free, pay a small fee for exam and get a certificate. Nptel chemical engineering chemical engineering design ii joint initiative of iits and iisc funded by mhrd page 33 of 41 lecture 6. For 100% duty heavy industrial compressors check out the quincy line. Pdf basic electrical engineering by d c kulshreshtha book free download. What are some of the advantages of reciprocating compressors. The library has a rich collection of technical, personality development, communication skills and career development titles. Introduction to fluid machines and compressible flow.
Applications 3rd lecture applications of refrigeration and air. The future of air compressor systems has been a constant research topic among industrialists. Construction of reciprocating air compressor youtube. Nptel engineering design 9 english language 0 gate preparation 4 nptel humanities and social sciences 79 nptel iit jee 2 nptel management 52 nptel mathematics 69 nptel mechanical engineering 153 nptel metallurgy and material science 36 nptel mining engineering 2 nptel nanotechnology 6 nptel ocean. Jet engine cutaway showing the centrifugal compressor and other parts. The compressors used for compressing air are called air compressors. Som,department of mechanical engineering,iit kharagpur. You can select the following articles about compressor centrifugal compressor basic manual calculation sheet for gas properties pdf. If you have any doubts please refer to the jntu syllabus book. Performance of reciprocating compressors nagendra m cbm engineer, hindusthan zink. Feb 08, 2014 types of compressors centrifugal compressors for low p compressor is a machine used to compressed air or gas to a final pressure exceeding 241. Refrigeration and air conditioning pdf notes rac pdf notes file to download are listed below please check it note. Pradeep, department of aerospace engineering, iit bombay. The modern techniques of heat recovery systems in air compressors and use of variable speed drives have been briefly detailed to provide a view into a bright future of air compressor systems.
All, aicte, cec, ignou, iimb, ncert, nios, nitttr, nptel, ugc. Nov 10, 2016 nptel pdf q consider a relation ra, b, c ordered on a nonkey attribute b, and an index is maintained on attribute c. Elementary theory of axial flow compressor, velocity triangles, degree of reaction. Iit kharagpur notes converted into high quality audio source nptel. These notes are according to the r09 syllabus book of jntu. I like these pdf files and it would help me increase my knowledge on recip compressors. An air compressor is a specific type of gas compressor compressors are similar to pumps. As gases are compressible, the compressor also reduces the volume of a gas. Iitm, iit madras, best institute in india, best higher education, top research institute, no. Krishnadas nair, engineering ethics, harishree publishing company. Due to the design pressure of lng inner tank is 29kpa and the working temperature of inner tank is between 162o c to 120 o c. Nptel, online courses and certification, learn for free. Single stage air compressor single stage reciprocating.
Mod01 lec22 centrifugal compressor part ii youtube. Compressor mechanical engineering in process equipments. The reciprocating air compressor is single acting when the compressing is accomplished using only one side of the piston. Nptel provides elearning through online web and video courses various streams. A chrome extension that condenses hour long nptel videos into short bits of important things.
It is the actual volume delivered by a compressor when reduced to the normal temperature and pressure condition. Reciprocating compressors are highly used for generalpurpose applications, where the air is used for handtools, cleaning dust, painting and others. Sits library is a backbone of our academic institution. Read here to know about various types of air compressors used and get a clear inside view of each type of compressor with the attached pictures.
Download 3rd edition fundamentals of electric circuits by charles k. Ejector quiet operation high volume of air, steady flow. Covid 19 update we are trading online as normal but closed to personal callers unit 2, southfields road dunstable, lu6 3ej tel 01582 471900, fax 01582 471920 email. Chemical engineering video lectures nptel video lectures. Tube side pressure drop in case of tube side condensation. In single stage compressor, the air used to compress with single piston which having smaller size and generate compress with only one cylinder. To evaluate the following expression, which is a better order of operation. In many cases, a properly designed heat recovery unit can recover anywhere from 50 to 90 percent of this available thermal energy and put it to useful work heating air or water. Refrigeration and air conditioning pdf notes rac pdf notes. The larger size models are relatively low in cost and small in physical size compared to reciprocating compressors. This manual does not for designing centrifugal compressor and those parts. Mechanical analysis for reciprocating compressors youtube. A compressor is a mechanical device that increases the pressure of a gas by reducing its volume.
Nptel courses indian institute of technology bhubaneswar. Work done and pressure rise velocity diagrams, diffuser vane design considerations. Bhawesh prasad darshan m mrutyunjaya b parminder singh. Reciprocating compressors are commonly used today only in sizes up to 25 hp. Together with the rotary screw compressor, its one of the most used compressor types. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Rotary vane compressors are, with piston compressors one of the oldest of compressor technologies.
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