heat transfer equipment design amp costs

... evaluate the heat- transfer coefficients and area required for each section 12.8 TUBE-SIDE HEAT- TRANSFER COEFFICIENT AND PRESSURE DROP (SINGLE PHASE) 12.8.1 Heat transfer Turbulent flow Heat- transfer ... 635 HEAT- TRANSFER EQUIPMENT The word “exchanger” really applies to all types of equipment in which heat is exchanged but is often used specifically to denote equipment in which heat is exchanged ... surface is: Q D UA1Tm where Q U A 1Tm D D D D 12.1 heat transferred per unit time, W, the overall heat transfer coefficient, W/m2 Ž C, heat- transfer area, m2 , the mean temperature difference,...

Ngày tải lên: 17/03/2014, 14:20

... -6.4648 4.4 Rate of heat transfer The rate of heat transfer at the wall i.e the heat flux in terms of Nusselt number Nu for different values of α and Kp are entered in Table The heat flux at the ... A1 B − A2 B − B − m )cos πz , (50) τz = − εα A1 A2 sin π z π 3.2 Rate of heat transfer The rate of heat transfer i.e heat flux at the wall in terms of Nusselt number (Nu) is given by ⎛ dθ ⎞ ⎛ ... transfer effects on MHD flow and heat transfer past a vertical porous plate through a porous medium under oscillatory suction and heat source Int J Heat Mass Transfer 2009, 52, 5962-5969 S S...

Ngày tải lên: 05/09/2013, 14:58

... based on a new generalized heat transfer law including generalized convective heat transfer law and generalized radiative heat transfer law has been derived [11] The heating load and coefficient ... The heat Q L absorbed from the low temperature reservoir by the working fluid per cycle by the combination of two different heat transfer mechanisms, which are Newtonian and radiative heat transfers ... the heat transfer area, h is the convection heat transfer coefficient between the working fluid and the reservoir, σ is Stefan-Boltzmann coefficient, ε is the emittance coefficient of the heat...

Ngày tải lên: 05/09/2013, 15:28

... Carnot heat engine with the losses of heat resistance, heat leakage and internal irreversibility, in which the heat transfer between the working fluid and the heat reservoirs obeys a complex heat transfer ... the heat- transfer surface area of the hightemperature-side heat exchanger , β is the overall heat transfer coefficient and F2 is the heat- transfer surface area of the low-temperature-side heat ... Carnot heat engine with the losses of heat- resistance, heat leakage and internal irreversibility, in which the heat transfer between the working fluid and the heat reservoirs obeys a complex heat transfer...

Ngày tải lên: 05/09/2013, 15:28

... The heat transfer between absorber plate and air can be enhanced either by increasing the heat transfer surface area using extended and corrugated surface or by increasing the convective heat transfer ... Glicksman L.R., Rohsenow W.M Heat transfer and friction for rib roughened surfaces Internatinal Journal of Heat Mass Transfer 1978, 21, 1143-56 [5] Han J.C Heat transfer and friction in channels ... Trans ASME Journal of Heat Transfer 1984, 106, 774-81 [6] Han J.C., Park J.S Developing heat transfer in rectangular channel with rib turbulators Trans ASME Journal of Heat Transfer 1988, 31, 183-95...

Ngày tải lên: 05/09/2013, 15:28

... with the enhancement of heat transfer to correlate the flow field investigation with the mechanism of heat transfer Experimental setup Two experimental set-ups, one for heat transfer analysis and ... Journal of Heat Transfer, 106, 774-781, 1984 [3] Han J.C., Glicksman LR and Rosenow WM Investigation of heat transfer and friction for ribroughened surfaces, Int Journal of Heat & Mass Transfer ... augmented heat transfer and friction in asymmetrically heated rectangular ducts with ribs on the heated wall in transverse, inclined, V-continuous and V- discrete pattern Int Journal of Heat Mass Transfer...

Ngày tải lên: 05/09/2013, 16:10

... from the overall heat transfer coefficient and the annulus side heat transfer coefficient, ho, which is determined using the modified Wilson plot technique [43] The overall heat transfer coefficient ... Numerical analysis of heat transfer in the annular flow regime J Heat Transfer, 122:80-91 [5] Cavallini, A., Col, D.D., Doretti, L Longo, G.A and Rossetto, L 2000 Heat transfer and pressure drop ... Calculation of turbulent flow and heat transfer in a porousbased channel Int J Heat Mass Transfer, 46:771-780 [26] Park, I.S and Choi, D.H 2001 Heat and mass -transfer analysis of the condensing...

Ngày tải lên: 05/09/2013, 16:10

... simply as the heat transferred per unit mass q Q m (1-16) where: q = heat transferred per unit mass (Btu/lbm) Q = heat transferred (Btu) m = mass (lbm) Example: Determine the heat transferred per ... J Conduction Heat Transfer, Addison-Wesley Pub Co., California Holman, J P., Heat Transfer, 3rd Edition, McGraw-Hill, New York Knudsen, J G and Katz, D L., Fluid Dynamics and Heat Transfer, McGraw-Hill, ... into an equivalent amount of heat and that heat could be converted into work EO 1.8 DEFINE the following: a Heat b Latent heat c Sensible heat d Units used to measure heat EO 1.9 DEFINE the following...

Ngày tải lên: 22/10/2013, 10:15

... heat transfer, phase change heat transfer, that is, boiling and condensation, will be treated as a subset of convection heat transfer 43.2 CONDUCTION HEAT TRANSFER The exchange of energy or heat ... to as radiant energy and the heat transfer process that occurs is called radiation heat transfer or simply radiation In this mode of heat transfer, the energy is transferred through electromagnetic ... steady-state with heat generation d ( dT\ d /, dT\ d f, dT\ , —Ik — + —Ik — + —\k — + q = dx\ dx/ dy\ dy/ dz\ dz/ steady-state, one-dimensional heat transfer with heat transfer to a heat sink (i.e.,...

Ngày tải lên: 23/01/2014, 07:20

... Boiling The heat transfer from a surface to a liquid is due to both convection and radiation A total heattransfer coefficient is defined by the combination of convection and radiation heat- transfer ... (1930) A J Chapman, Heat Transfer, Macmillan, New York, 1974 S Whitaker, AICHE J 18, 361 (1972) M Jakob, Heat Transfer, Vol 1, Wiley, New York, 1949 10 A Zhukauska, "Heat Transfer from Tubes ... Convection Heat Transfer in Liquids Confined between Two Horizontal Plates," / Heat Transfer 81C, 24 (1959) 17 I Catton, "Natural Convection in Enclosures," in Proc 6th International Heat Transfer...

Ngày tải lên: 23/01/2014, 07:20

... technology transfer programs, and those who study the process and problems of university-based knowledge transfer, to discuss what synergies exist and how entrepreneurship and technology transfer ... pharmacogenomics These are examples of major hits for technology transfer, but Siegel and Phan are concerned with the process underlying more routine technology transfer They identify the principal ... Arizona Office of Technology Transfer, The University of Arizona NBER, The University of Arizona Academy of Entrepreneurship, University of Illinois, Urbana-Champagne Technology Transfer, Ewing Marion...

Ngày tải lên: 19/02/2014, 05:20

... of 30 W/m·oC All the heat generated in the chips is conducted across the circuit board and is dissipated from the back side of the board to a medium at 40oC, with a heat transfer coefficient ... http://www.csun.edu/~lcaretto Question a: Each chip dissipates: 0.04 W Thermal conductivity: k = 30 W/m.oC Heat transfer coefficient: h = 40 W/m.oC Temperature of front side: T1 = ? Temperature of back side: ... (circuit board conduction, R = L/kA, and convection, R = 1/hA). The  area, A = (0.12 m)(0.18 m) = 0.0216 m2. The heat transfer is the  80(0.04 W) = 3.2 W dissipated by the logic chips Question b: Aluminum plate (0.2­cm­thick, 12­cm­high, and 18­cm­...

Ngày tải lên: 06/03/2014, 20:21

... chapter These are: Peripheral Equipment Recent History PERIPHERAL EQUIPMENT With respect to heat transfer equipment, the bulk of early equipment involved the transfer of heat across pipes The history ... History of Heat Transfer REFERENCES E LAYTON, History of Heat Transfer: Essays in the Honor of the 50th Anniversary of the ASME Heat Transfer Division, date and location unknown Y CENGEL, Heat Transfer, ... Entropy and Heat 252 References Part Three 244 246 253 Heat Transfer Equipment Design Procedures and Applications 14 Introduction to Heat Exchangers Introduction 257 Energy Relationships 258 Heat Exchange...

Ngày tải lên: 08/03/2014, 17:20

... (2) Nanoscale Data Storage Systems (1) Nanoscale Heat Transfer in Nano Transistors TWO DISRUPTIVE HEAT TRANSFER TECHNOLOIES (1) Nanoscale Heat Transfer in Nano Transistors Silicon substrate (thin ... law for heat convection, and Fourier law for heat conduction in solids Both these cases require the use of nanoscale heat transfer techniques - A radically different from macroscale heat transfer ... energy and thus HEAT Lattice vibration of atoms generates heat Fundamental Mechanisms of Heat Transmission in Matter SUMMARY November 21, 2006 (Nanoscale Heat Transfer) Inter- Molecular Heat Transmission...

Ngày tải lên: 15/03/2014, 23:15

Ngày tải lên: 17/03/2014, 13:49

... simply as the heat transferred per unit mass q Q m (1-16) where: q = heat transferred per unit mass (Btu/lbm) Q = heat transferred (Btu) m = mass (lbm) Example: Determine the heat transferred per ... J Conduction Heat Transfer, Addison-Wesley Pub Co., California Holman, J P., Heat Transfer, 3rd Edition, McGraw-Hill, New York Knudsen, J G and Katz, D L., Fluid Dynamics and Heat Transfer, McGraw-Hill, ... into an equivalent amount of heat and that heat could be converted into work EO 1.8 DEFINE the following: a Heat b Latent heat c Sensible heat d Units used to measure heat EO 1.9 DEFINE the following...

Ngày tải lên: 17/03/2014, 15:00

... not physically connected to the heat transfer site Rev Page HT-02 CONDUCTION HEAT TRANSFER Heat Transfer CONDUCTION HEAT TRANSFER Conduction heat transfer is the transfer of thermal energy by interactions ... CONVECTION HEAT TRANSFER Heat Transfer CONVECTION HEAT TRANSFER Heat transfer by the motion and mixing of the molecules of a liquid or gas is called convection EO 1.9 Given the formula for heat transfer ... this module HT-02 Page Rev Heat Transfer HEAT TRANSFER TERMINOLOGY Heat Flux ˙ The rate at which heat is transferred is represented by the symbol Q Common units for heat transfer rate is Btu/hr...

Ngày tải lên: 17/03/2014, 15:00

... Volume of Module - Heat Transfer This module describes conduction, convection, and radiation heat transfer The module also explains how specific parameters can affect the rate of heat transfer Volume ... involving the transfer of heat Frequently, when it is desired to remove heat from the point at which it is generated, some type of fluid is involved in the heat transfer process Examples of this ... EG&G Idaho, Inc Rev HT THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW OVERVIEW The Department of Energy Fundamentals Handbook entitled Thermodynamics, Heat Transfer, and Fluid Flow was prepared...

Ngày tải lên: 17/03/2014, 15:00

... definitions 1.1 Modes of heat transfer 1.2 Definitions 1.2.1 Heat (transfer) rate and heat flux 1.2.2 Heat transfer coefficients and overall heat transfer coefficients ... product costs To reach these goals, an exact prediction of heat transfer processes is required To design a heat exchanger or a complete plant, in which heat is transferred, exact knowledge of the heat ... thermal contact to each other, heat transfer occurs The application of the science of heat transfer can be easily demonstrated with the example of a radiator design Heating water Inlet temperature...

Ngày tải lên: 24/03/2014, 01:20

... Developments in Heat Transfer Objectives The Developments in Heat Transfer book Series publishes state-of-the-art books and provides valuable contributions to the literature in the field of heat transfer, ... development in heat transfer is of significant importance to many branches of technology, not least in energy technology Developments include new, efficient heat exchangers, novel heat transfer equipment ... Compact Heat Exchangers, Engineering Heat Transfer Phenomena, Fins and Fin Systems, Condensation, Materials Processing, Gas Turbine Cooling, Electronics Cooling, Combustion-Related Heat Transfer, Heat...

Ngày tải lên: 01/04/2014, 10:42