types of heat transfer in cooking
An experimental investigation of heat transfer and fluid flow in a rectangular duct with inclined discrete ribs
Ngày tải lên :
05/09/2013, 16:10
... enhancement of heat transfer heated
surface to the working fluid. In the present work experimental investigations has been carried out to
study the effect of a gap in the inclined rib on the heat transfer ... Associate Professor in the Department of Mechanical Engineering at
M.A.N.I.T. Bhopal (M.P.) INDIA. He received Ph D degree from IIT Roorkee , INDIA. He is working in
the area of heat transfer and ... the heated wall in transverse, inclined, V-continuous and V- discrete
pattern. Int. Journal of Heat Mass Transfer 2003; 30(2): 241-250.
[17] Bhagoria J.L. and Sahu M.M. Augmentation of heat transfer...
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heat transfer in femtosecond laserprocessing of metal
Ngày tải lên :
06/05/2014, 08:53
... L. Tien, Heat Transfer Mechanisms during Short-Pulse Laser Heating of
Metals, ASME J. Heat Transfer, vol. 115, pp. 835–841, 1993.
5. T. Q. Qiu and C. L. Tien, Femtosecond Laser Heating of Multi-Layer ... amount of superheating and
that a distinct melt phase develops with duration of the order of nanoseconds.
INTRODUCTION
In the last few years, the use of femtosecond lasers in materials processing ... Laser
Heating, Int. J. Heat Mass Transfer, vol. 44, pp. 1725–1734, 2001.
10. L S. Kuo and T. Q. Qiu, Microscale Energy Transfer during Picosecond Laser Melting of
Metal Films, Proc. 31st Natl. Heat...
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hydrodynamics, mass, and heat transfer in chemical engineering, crc (2002) - opet
Ngày tải lên :
02/04/2014, 15:52
... maintain the rotation of the cylinder at a constant angular velocity
W
in infinite
fluid, it is necessary to apply the following time-dependent angular momentum
per unit length of the cylinder: ... contain tables with exact solutions of the heat equation. In
addition, the equation of convective diffusion, the continuity equation, equations
of motion in some curvilinear orthogonal coordinate ... straining flow:
This flow can be obtained in the Taylor device, consisting of four rotating cylinders [474,475]. Note
that flow
2'
is the same as flow
3'
but in a different coordinate...
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Ptinciples of heat transfer
Ngày tải lên :
08/04/2014, 11:00
... (a) -in. aluminum,
(b) -in. stainless steel with a 1 -in thick layer of
fiberglass insulation on the inside, and (c) of sandwich
construction with a -in thick layer of stainless
steel, a 1 -in thick ... defined in terms of the local value by
(1.12)
For most engineering applications, we are interested in average values. Typical val-
ues of the order of magnitude of average convection heat transfer ... mechanisms of heat transfer have been
treated separately. In practice, however, heat is usually transferred by several of the
basic mechanisms occurring simultaneously. For example, in the winter, heat...
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heat transfer in femtosecond laser
Ngày tải lên :
06/05/2014, 08:55
... PROCESSING OF METAL 229
HEAT TRANSFER IN FEMTOSECOND LASER
PROCESSING OF METAL
Ihtesham H. Chowdhury and Xianfan Xu
School of Mechanical Engineering, Purdue University,
West Lafayette, Indiana, ... L. Tien, Heat Transfer Mechanisms during Short-Pulse Laser Heating of
Metals, ASME J. Heat Transfer, vol. 115, pp. 835–841, 1993.
5. T. Q. Qiu and C. L. Tien, Femtosecond Laser Heating of Multi-Layer ... Laser
Heating, Int. J. Heat Mass Transfer, vol. 44, pp. 1725–1734, 2001.
10. L S. Kuo and T. Q. Qiu, Microscale Energy Transfer during Picosecond Laser Melting of
Metal Films, Proc. 31st Natl. Heat...
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molecular dynamics simulation of heat transfer and phase change during
Ngày tải lên :
06/05/2014, 08:55
... the increase of the
atomic kinetic energy in laser heating, atoms vibrate more in the
crystal region, causing a lower peak of the number density of
atoms and a wide distribution. As laser heating ... are
obtained. First, during picosecond laser heating, the heat
transfer process predicted using the continuum approach agrees
with the result of the MD simulation. Second, when melting
happens, ... Study of Light-to -heat Absorption
Mechanism in atomic Systems," International Journal of Heat
and Mass Transfer, 41, pp. 839-849.
3. Häkkinen, H., and Landman, U., 1993, "Superheating,...
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molecular dynamics simulation of heat transfer and phase change during
Ngày tải lên :
06/05/2014, 08:57
... the increase of the
atomic kinetic energy in laser heating, atoms vibrate more in the
crystal region, causing a lower peak of the number density of
atoms and a wide distribution. As laser heating ... metal interaction in two
steps including photon energy absorption in electrons and
lattice heating through interaction with electrons. A large body
of the MD simulation of laser material interaction ... of
predicting the heating process induced by a picosecond laser
pulse.
Laser Induced Phase Change
In this section, various phenomena accompanying phase
change in an argon target illuminated...
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molecular dynamics simulation of heat transfer and phase change during
Ngày tải lên :
06/05/2014, 08:59
... the increase of the
atomic kinetic energy in laser heating, atoms vibrate more in the
crystal region, causing a lower peak of the number density of
atoms and a wide distribution. As laser heating ... Study of Light-to -heat Absorption
Mechanism in atomic Systems," International Journal of Heat
and Mass Transfer, 41, pp. 839-849.
3. Häkkinen, H., and Landman, U., 1993, "Superheating, ... expand in space when
heated. Therefore, more heat is stored in the form of potential
energy and resulting in a larger specific heat.
The specific heat at constant volume is calculated in the...
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![Báo cáo lâm nghiệp: "Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions" ppsx](https://media.store123doc.com/images/document/2014_08/07/medium_eml1407381692.jpg)
Báo cáo lâm nghiệp: "Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions" ppsx
Ngày tải lên :
07/08/2014, 10:21
... (H et al. 2009).
e structure of merocoenoses of cambiopha-
gous insects in lying (wind-felled) trees diff ers
from that of standing trees (in endemic situation)
in the high attack by I. typographus ... 4).
Merocoenoses of cambioxylophagous insects
in wind-felled trees, breaks and fragments
e trees felled by the wind in autumn were
checked for the presence of cambioxylophagous in-
sects in next spring ... diversity of cambioxylophagous and
wood-inhabiting insects (33), but only 18 species
were more abundant. Considering the frequency
of occurrence of cambioxylophagous insects in
standing trees...
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Báo cáo y học: "Efficacy of different types of aerobic exercise in fibromyalgia syndrome: a systematic review and meta-analysis of randomised controlled trials" potx
Ngày tải lên :
12/08/2014, 12:20
... exercise involving at
least one-sixth of the skeletal muscles (for example, walk-
ing, running, biking, aerobics, vibrations). At least 50% of
the training session should consist of AE. In the case of
mixed ... recognised
criteria were included.
Types of intervention
AE was assumed if the reported target heart rate of the
training protocol was at least (on average) 40% of maxHR
or if the training protocol included ... which types,
volumes and intensities of AE are effective by performing
head-to-head comparisons of RCTs with different types
and intensities of AE. The final aim was to assess whether
ongoing exercise...
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mass and heat transfer analysis of mass contactors and heat exchangers (cambridge series in chemical engineering)
Ngày tải lên :
02/04/2014, 15:52
... the jacket. The flow
rate of heating–cooling fluid can be adjusted in order to maintain control over the
temperature in the batch vessel. We often do this by constructing a jacket around the
process ... 2007 0:57
Introduction 7
Of course, this is not exactly what occurs in a real system. Close to the point of intro-
duction, the fluid in the vessel will have properties that are some intermediate ... December 21, 2007 23:45
68 Heat Exchanger Analysis
Batch and semibatch heat exchangers are used when the heating or cooling of a
fixed volume of fluid is required, whereas continuous systems are used...
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Báo cáo hóa học: " Numerical evaluation of laminar heat transfer enhancement in nanofluid flow in coiled square tubes" pdf
Ngày tải lên :
21/06/2014, 03:20
... details
1
Department of Mechanical Engineering, National University of Singapore, 9
Engineering Drive 1, Singapore, 117576 Singapore
2
Minerals, Metals and
Materials Technology Centre, National University of Singapore, ... con-
ductivity of these fluids by suspending nanoparticles of
* Correspondence: jc.kurnia@nus.edu.sg
1
Department of Mechanical Engineering, National University of Singapore, 9
Engineering Drive 1, Singapore, ... nanoparticles are given in Table 1.
Heat transfer performance
The heat transfer performance of the cooling channel is
discussed in terms of the figure of mer it, FoM, which is
defined as
FoM =
W
W
p
um
p
,
(14)
Figure...
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Báo cáo hóa học: " Review of thermo-physical properties, wetting and heat transfer characteristics of nanofluids and their applicability in industrial quench heat treatment" pot
Ngày tải lên :
21/06/2014, 04:20
... CHF during pool boiling of
nanofluids increased even when the pool boiling heat
transfer of nanofl uid may dec rease or rem ain
unchanged.
During quench hardening process, the surface heat
transfer ... boiling heat
transfer of the nanofluids on the grooved surface
increases remarkably [120]. Kathiravan e t al. observed
the enhancement of heat transfer coefficient during the
pool boiling of water-CNT ... enhancement in the pool boiling heat transfer of
alumina nanofluids. The enhancement increases with
increasing particle concentration and reaches approxi-
mately 40% at a particle loading of 1.25%...
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Bơm ECD-V - P - Types of Systems in ECD-V Series
Ngày tải lên :
23/10/2012, 09:09
... performance of the engine with the ECD-V4 has been
improved (by atomizing the fuel into finer particles and optimizing the rise rate of the injection pressure), and
providing the injection volume and injection ... the fuel fills the injection pump, it lubricates and cools the moving parts in the injection pump. After the fuel is
pressurized, it is injected into the engine cylinder by the injection nozzle. ... solenoid spill valve to control
fuel injection, enabled the control of the injection volume
on a cylinder-by-cylinder basis.
Depending on the type of final injection volume
correction and the...
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