PDF-1 Numerical investigation of heat transfer and fluid flow of water thr

Present address Mechanical Engineering Department Faculty of Engineering Ekiti State University PMB 5363 AdoEkiti Nigeria Email tooni1610yahoocom Tel 2340803 621 7934 2 heat flow in a heat exchanger. Types of Heat Exchangers. l. 1- Double Pipe Heat Exchangers. Hair pin. Return bend. w,c. p. ,t. 1. w,c. p. ,t. 2. W,C. p. ,T. 1. W,C. p. ,T. 2. ID. O. D. D. J. w=.  . W=. -.  . Q=w . c. p. . (t. 2. 4.1 …………. Introduction and Types of Fins. 4.2 …………. Governing Equation of Fin. 4.3 …………. Heat Dissipation through Rectangular Fin. 4.4 …………. Heat Dissipation from Infinitely Long Fin. . What is it?. Fluid Mechanics. The study of fluids and the forces on them. .. W. hat are fluids?. Fluid Mechanics. Liquids and gases are fluids.. Fluids take the shape of the container which they occupy.. Assumptions: . Incompressible substance, . B. Negligible heat transfer . C. negligible friction despite “the rubbing liquid layers”. D. B and C leading to near isothermal operation.. SFEE applied to heat exchangers. Unsteady. Flow. Objectives. Understand unsteady flow.. Examine the unsteady . form of the Navier–Stokes . Equation.. S. tudy . the Courant Number for unsteady . flow.. Learn from an example. : Unsteady flow . Maysam Mousaviraad, Tao Xing, Shanti Bhushan, and Frederick Stern. IIHR—Hydroscience & Engineering. C. Maxwell Stanley Hydraulics Laboratory. The University of Iowa. 57:020 Mechanics of Fluids and Transport Processes. Lesson . 3. : The Thermal Boundary Layer. Aim. LO2: Understanding Heat Transfer Mechanisms and Coefficients. The Thermal Boundary. Layer. In hydrodynamics, the boundary layer is defined as that region of the flow where viscous forces are felt.. Introduction to Convection. Convection denotes energy transfer between a surface and a fluid moving over the surface.. The dominant contribution due to the bulk (or gross) motion of fluid particles.. Introduction. 1,2. : . There . is a continuing need to design better . cooling . devices for electronics components because of increasing power and also . miniaturized . sizes. Heat pipes have been proven to be among the most efficient passive cooling solutions for . Introduction. M. ethods. Measured Variables: inlet/outlet temperatures, heat transfer area, flow rates. Figure 1: . Condensers studied in experiment. Cold Stream Flow Rates (. m. 3. /s). :. 9.58∙10. is often used specially to denote equipment in which heat is exchanged between two process. Streams.. These heat exchanger may be classified according to:. Transfer process. 1. Direct contact. 2. indirect contact. DESCRIBE the difference in the temperature profiles for counter-flow and parallel flow heat exchangers.. DESCRIBE the differences between regenerative and non-regenerative heat exchangers.. Given the temperature changes across a heat exchanger, CALCULATE the log mean temperature difference for the heat exchanger.. Why is it windy at the seaside?. Cold air sinks. Where is the freezer compartment put in a fridge?. Freezer compartment. It is put at the top, because cool air sinks, so it cools the food on the way down.. Nimesh Gajjar. CONVECTIVE HEAT TRANSFER. . Convection heat transfer involves . fluid motion . heat conduction. The fluid motion enhances the heat transfer, since it brings hotter and cooler chunks of fluid into contact, initiating higher rates of conduction at a greater number of sites in fluid. Therefore, the rate of heat transfer through a fluid is much higher by convection than it is by conduction. In fact, the higher the fluid velocity, the higher the rate of heat transfer..