The notes are intended to describe the three types of heat transfer and provide. Introduction evaporation is the removal of solvent as vapor from a solution, slurry or suspension of solid in a liquid. Jul 01, 2016 heat can flow only from hotter to cooler fluids, as per the second law of thermodynamics. Heat exchanger problem calculation lmtd and effectiveness. Introduction to heat transfer general heat conduction equation one dimensional steady state conduction in rectangular coordinate,cylindrical and spherical coordinate ritical and optimum insulation extended surface heat transfer analysis of lumped parameter model transient heat flow in semi infinite solid infinite body subjected to sudden convective graphical. Heat transfer online course video lectures by iit guwahati. The transfer of heat energy between the two fluids could be carried out. Heat exchangers jordan university of science and technology. A heat exchanger network obtained using the pinch design method is a network where no heat is transferred from a hot stream whose temperature is above the pinch to a cold stream whose temperature is below the pinch. Heat lecture 9 cm3110 1272015 2 heat transfer with phase change so far we have discussed heat transfer at a boundary due to a temperature difference between bulk temperatures x bw q ht t a 1. Another approach introduce the definition of heat exchanger effectiveness, which is a dimensionless with ranging between 0 to1. Nptel chemical engineering chemical engineering design ii joint initiative of iits and iisc funded by mhrd page 2 of 31 lecture 1. Introduction to engineering heat transfer these notes provide an introduction to engineering heat transfer.
Heat exchangers can be classified into four types, according to. This course for undergraduate students covers the fundamental aspects and quantitation of different modes of heat transport. And i have shown in my in one of my earlier lecture show, either it is called double pipe heat exchanger or tube in tube heat exchanger. The term heat exchanger applies to all equipment used to transfer heat between two streams. So, there is a central tube and there is another tube surrounding it. Gaitonde, department of mechanical engineering, iit bombay. Aloke kumar ghosal, department of chemical engineering, iit guwahati. Heat exchangers study notes for mechanical engineering. Heat exchanger lecture heat exchanger pipe fluid conveyance. Solar energy technology online course video lectures by iit. Heat transfer nptel online videos, courses iit video lectures. The heat exchanger must be isolated from system vibrations using flexible piping connections and isolation pads on the mounting feet.
Chezy equation, manning equation best hydraulic sections for uniform flow computation in uniform flow specific energy and specific force critical depth and velocity. And there we might have told you how to evaluate the heat transfer coefficient, but as you can understand from the lectures in details of this. Nptel online videos, courses iit video lectures well organized. Understanding the fundamentals governing heat transfer is key to designing equipment that involves heat exchange. Definition and differences between pipe flow and open channel flow types of flow properties of open channel fundamental equations velocity distribution in open channel steady uniform flow. Lecture 1 introduction on heat and mass transfer youtube. So, we have a double type heat exchanger double tube heat exchanger.
A heat exchanger is an equipment where heat energy is transferred from a hot fluid to a colder fluid. S k mondal mechanical notes best for preparation gate 2018. To get substantial heat transfer area from a double pipe exchanger, it must be long. Nptel chemical engineering chemical engineering design ii joint initiative of iits and iisc funded by mhrd page 2 of 41 lecture 1. If the heat exchanger is located at the inlet or discharge of a blower with a pulsating flow, such as a roots type rotary lobe blower, the heat exchanger must be protected from the pulsation by a chambered silencer. Property relationships for pure substances and mixtures, thermodynamic relations, ideal gas mixtures, combustion thermodynamics, gas power cycles, vapour power cycles, refrigeration cycles, reciprocating compressors, compressible flows and steam nozzles. Heat and mass transfer nptel online videos, courses.
Examples are water cooling towers and jet condensers in. Heat exchanger lecture free download as powerpoint presentation. However, the term is commonly used to equipment in which two process streams exchange heat with each other. Counter flow heat exchangers are the most efficient of the three types. Some bldg energy codes give allowable uvalue based on a weighted average for the.
Dec 10, 2008 lecture series on heat and mass transfer by prof. Overall heat transfer coefficient for doublepipe heat exchanger. Heat exchanger effectiveness ntu method if more than one of the inlet and outlet temperature of the heat exchanger is unknown, lmtd may be obtained by trial and errors solution. Nptel mechanical engineering heat and mass transfer.
Heat and mass transfer video notes nptel lecturenotes. Base your calculation on the outside area of the inside pipe. Reason for heat exchangers a heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another hot and cold fluid. Ht1 introduction to engineering heat transfer these notes provide an introduction to engineering heat transfer. Heat transfer processes set limits to the performance of aerospace components and systems and the subject is one of an enormous range of application. The aim is to concentrate a nonvolatile solute, such as organic. Nptel chemical engineering chemical engineering design ii.
Heat transfer nptel online videos, courses iit video. I provide you heat transfer study notes for gate 2018 in pdf format download now. Intermediate heat and mass transfer mechanical engineering. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Calculate the heat transfer area of the double pipe heat exchanger in the lab. Satyamurty, department of mechanical engineering, iit kharagpur.
F it is useful in determining the overall thermal performance of a bldg envelope that includes different construction assemblies in parallel heat flow. Radiation radiative heat transfer, stefanboltzmann law, wiens displacement law, black and grey surfaces, view factors, radiation network analysis. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video. Mod07 lec33 design of shell and tube heat exchanger. Nptel provides elearning through online web and video courses various streams. The course can also serve as a refresher for graduate students. The prerequisites for this course are the undergraduate courses in thermodynamics and fluid mechanics, specifically thermal fluids engineering i and thermal fluids engineering ii or their equivalents. Types of heat exchanger, process design of shell and tube heat exchanger, condenser, and reboilers. Iits and iiscs free open online web and video courses for science and engineering under nptel similar websites like nptel. The result is a high pressure drop, increased pumping costs, and large amounts of expensive. Pdf lecture notes on heat and mass transfer find, read and cite all the research you need on researchgate. Introduction evaporation is the removal of solvent as vapor from a solution, slurry or suspension. In contrast to the parallel flow heat exchanger, the counter flow heat exchanger can have the hottest coldfluid temperature greater than the coldest hotfluid temperatue.
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