vtu question papers of heat and mass transfer
fundamentals of heat and mass transfer
Ngày tải lên :
02/04/2014, 15:51
... Convection Heat and Mass Transfer 457
7.5 The Sphere 465
7.6 Flow Across Banks of Tubes 468
7.7 Impinging Jets 477
7.7.1 Hydrodynamic and Geometric Considerations 477
7.7.2 Convection Heat and Mass Transfer ... in heat transfer. It explains the
linkage between heat transfer and thermodynamics, and it reveals the relevance and rich-
ness of the subject. It should be covered in its entirety. Much of the ... is 25ЊC and
the plate measures 0.3 ϫ 0.3 m with a mass of 3.75 kg
and a specific heat of 2770 J/kg ⅐ K.
1.23 A transmission case measures W ϭ 0.30 m on a side
and receives a power input of P
i
ϭ...
- 1.1K
- 5.7K
- 1
incropera fundamentals of heat and mass transfer
Ngày tải lên :
02/04/2014, 15:52
... water-ice mixture.
Mass and specific heat of reference sphere.
FIND:
Specific heat of the test sphere of known mass.
SCHEMATIC:
ASSUMPTIONS:
(1) Spheres are of equal diameter, ... Electrical heater is perfectly insulated
from dryer wall, (3) Heater and switch are isothermal at T
set
, (4) Negligible heat transfer from
sides of heater or switch, (5) Switch surface, A
s
, loses heat ...
KNOWN: Power consumption, diameter, and inlet and discharge temperatures of a hair
dryer.
FIND: (a) Volumetric flow rate and discharge velocity of heated air, (b) Heat loss from case.
SCHEMATIC:...
- 2.1K
- 15.5K
- 1
Fundementals of heat and mass transfer kotandaraman
Ngày tải lên :
08/04/2014, 10:55
... COMBINED MODES OF HEAT TRANSFER
Previous sections treated each mode of heat transfer separately. But in practice all the three
modes of heat transfer can occur simultaneously. Additionally heat generation ... blank type and true or false type
questions are provided to test the understanding of the basic principles.
Author
PREFACE vii
VED
c-4\n-demo\damo2-3
74 FUNDAMENTALS OF HEAT AND MASS TRANSFER
0.1 ... FUNDAMENTALS OF HEAT AND MASS TRANSFER
In this chapter only simple cases will be dealt with and the determination of F will be
taken up in the chapter on radiation. The concept of h
r
is convenient,...
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- 733
- 0
fundamentals of heat and mass transfer solutions manual phần 1 docx
Ngày tải lên :
08/08/2014, 17:20
...
value of the heat rate.
PROBLEM 1.39
KNOWN: Power consumption, diameter, and inlet and discharge temperatures of a hair
dryer.
FIND: (a) Volumetric flow rate and discharge velocity of heated ... Electrical heater is perfectly insulated
from dryer wall, (3) Heater and switch are isothermal at T
set
, (4) Negligible heat transfer from
sides of heater or switch, (5) Switch surface, A
s
, loses heat ...
KNOWN:
Dimensions, thermal conductivity and surface temperatures of a concrete slab. Efficiency
of gas furnace and cost of natural gas.
FIND:
Daily cost of heat loss.
SCHEMATIC:
ASSUMPTIONS:
...
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- 4
fundamentals of momentum, heat, and mass transfer 5th edition
Ngày tải lên :
02/04/2014, 15:51
... symbols dQ and dW represent differential heat transfer and work
done, respectively. The differential operator, d, is used as both heat transfer and work
are path functions and the evaluation of integrals ... Molecular Mass Transfer 399
24.2 The Diffusion Coefficient 407
24.3 Convective Mass Transfer 428
24.4 Closure 429
25. Differential Equations of Mass Transfer 433
25.1 The Differential Equation for Mass ... to Momentum Transfer
Chapter 4
Conservation of Mass:
Control-Volume Approach
The initial application of the fundamental laws of fluid mechanics involves the law of
conservation of mass. In this...
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- 1.6K
- 0
CONVECTIVE HEAT AND MASS TRANSFER ppt
Ngày tải lên :
30/03/2014, 19:20
... Convention for Thermal and Mass Transfer Boundary Conditions
A wide variety of thermal and mass transfer boundary conditions can be encoun-
tered in practice. Standard thermal and mass transfer boundary ... (m)
l
ent,ma
Mass transfer entrance length (m)
l
ent,th
Thermal (heat transfer) entrance length (m)
l
M
Turbulence mixing length ( m)
l
M, ma
Turbulence mixing length f or mass transfer (m)
l
heat
Heated ... (m)
l
th
Turbulence mixing length f or heat transfer (m)
M Molar mass (kg/kmol)
Ma Mach number
m Mass fraction; dimensionless constant
m Mass (kg); mass of a single molecule (kg)
m
Mass flux (kg/m
2
s)
N Ratio...
- 548
- 3.4K
- 1
Heat and Mass Transfer in Porous Media pdf
Ngày tải lên :
31/03/2014, 16:20
...
components
Heat output
Fig. 9 Micro heat pipe [54]
Two-Phase Flow and Heat Transfer in Micro-Channels 57
17. In, S., Jeong, S.: Flow boiling heat transfer characteristics of R123 and R134a in ... knowledge of heat transfer mechanisms at different
conditions. Investigations on flow boiling heat transfer in literature have revealed
numbers of criteria of system classification, flow instabilities and ... Microchannel Heat Sinks. J. Heat Transf. 129(10), 1341–1351 (2007)
37. Brutin, D., Tadrist, L.: Pressure drop and heat transfer analysis of flow boiling in a
minichannel: influence of the inlet...
- 270
- 1.9K
- 3
heat and mass transfer
Ngày tải lên :
02/04/2014, 15:27
... corresponds to that
of heat conduction, whilst mass transfer in a flowing fluid, known for short as
convective mass transfer corresponds to convective mass transfer. Mass transfer
by diffusion and convection ... only sorts of mass transfer. Radiative heat
transfer has no corresponding mass transfer process.
1.4.1 Diffusion
The calculation of mass transfer by diffusion requires several definitions and rela-
tionships ... heat transfer in film condensation, cross current heat transfer
and the analogy between heat and mass transfer in evaporation.
76 1 Introduction. Technical Applications
We consider a volume of...
- 705
- 1.4K
- 0
fundamentals of heat and mas transfer seventh edition
Ngày tải lên :
02/04/2014, 15:51
... Convection Heat and Mass Transfer 457
7.5 The Sphere 465
7.6 Flow Across Banks of Tubes 468
7.7 Impinging Jets 477
7.7.1 Hydrodynamic and Geometric Considerations 477
7.7.2 Convection Heat and Mass Transfer ... applicability of heat exchanger analysis to heat
sink design and materials processing. Much of the coverage of compact heat exchangers
included in the previous edition was limited to a specific heat exchanger. ... of heat transfer by free convection
and radiation exchange.
(b) To assess the trade-off between current-carrying
capacity, operating temperature, and bar diameter,
for diameters of 10, 20, and...
- 1.1K
- 1.3K
- 0
momentum, heat, and mass transfer fundamentals
Ngày tải lên :
02/04/2014, 15:53
... problems of
heat transfer and sometimes mass transfer.
This large and very interesting area of fluid mechanics is still developing
rapidly. For further information there are a wide range of multiple ...
Generation
of
mass
of
a
species
Accumulation of mass of a
species
Input
and
output of mass of
a
species
Example
2.1.2-1
Macroscopic species
mass
balance with
zero
-0
rde
r
irreversible ... for mass transfer:
r
1
(1.1.2-3)
where
NA
is the
mass
flux
of species
A,
k,
is the single-phase
mass transfer coefficient,
ZA~
is the concentration of
A
at the
surface, and...
- 1K
- 800
- 2
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