631081-2-16PP
AID: 9164 | 29/04/2016
Write the relation to calculate the heat transfer to the copper tube per unit length.
2 k To Ti
q
ln D d
Here,
Ti
is the inside temperature,
per unit length,
D
To
is the outside temperature,
is the outside diameter,
631081-3-3PP
AID: 9164 | 29/04/2016
Write the relation to calculate the heat transfer.
dT
Q mc p
dt
Here,
is the rate of temperature distribution,
dT
dt
pressure,
m
is the mass of the steel, and
Q
cp
is the specific heat at constant
is the heat transfer.
631081-2-40PP
AID: 9164 | 29/04/2016
Write the relation to calculate the heat transfer between pin and surface.
(1)
Q Fk To Ti
Here,
Ti
is the inside temperature,
between pin and surface,
F
To
is the outside temperature,
is the shape factor, and
k
Q
is
631081-2-7CQQ
AID: 9164 | 29/04/2016
Write the relation to calculate the heat transfer.
Q Fk To Ts
Here,
Ts
is the temperature of surface,
conductivity,
Substitute
F
0.3m
To
is the shape factor, and
for
F
, and
8.5 W m-K
Q 0.3 m 8.5 W m-K 313 K 278 K
2
631081-2-18PP
AID: 9164 | 29/04/2016
Write the relation to calculate the heat transfer to the refrigerator.
2 kL To Ti
Q
ln D d
Here,
tubes,
Ti
Q
is the inside temperature,
To
is the outside temperature,
is the heat transfer to the refrigerator,
diamete
631081-2-21PP
AID: 9164 | 29/04/2016
Write the relation to calculate the heat gain in the container.
4 kRr To Ti
Q
R r
Here,
Ti
is the inside temperature,
the container,
R
To
is the outside temperature,
is the outside radius,
r
Q
is the heat transfer to
631081-1-28PP
AID: 9164 | 29/04/2016
Write the relation to calculate the amount of rate of water transferred by using Ficks law.
(1)
.
dC
m ADAB
24 hr
dx
Here,
.
is the amount of helium lost through diffusion,
m
the area of the sphere,
DAB
is the diffus
631081-2-5PP
AID: 9164 | 29/04/2016
Write the equation to calculate the thermal conductivity.
k kT 0 T T0
Here,
T0
is the surrounding temperature,
temperature,
kT 0
is the thermal diffusivity,
T
is the thermal conductivity at surrounding
is the temperatu
631081-2-12PP
AID: 9164 | 29/04/2016
Write the relation to calculate the heat gain of the storage per unit area.
(1)
T T
q o i
R
Here,
Ti
is the inside temperature,
storage per unit area, and
R
To
is the outside temperature,
q
is the heat gain of the
is
631081-2-37PP
AID: 9164 | 29/04/2016
Write the relation to calculate the heat loss per unit length.
(1)
Q Fk To Ti
Here,
Ti
is the inside temperature,
is the outside temperature,
To
the container per unit meter of length,
F
Q
is the heat transfer to
is
631081-2-2PP
AID: 9164 | 29/04/2016
Write the equation to calculate the thermal conductivity.
T
k 8.328 104
MW
Here,
is the collision diameter,
temperature, and
Substitute
3.9 A
k 8.328 104
k
MW
is the molecular mass of the neon gas,
is the thermal condu
631081-2-10CQQ
A
0.14 cm
AID: 9164 | 29/04/2016
diameter copper wire has a smaller diameter and a greater electrical resistance
per unit length. Therefore it would be expected to have a higher temperature than the
diameter copper wire.
0.18cm
631081-2-2CQQ
AID: 9164 | 29/04/2016
Write the relation to calculate the conductive resistance.
R
k
Here,
is the thickness,
k
is the thermal conductivity, and
resistance.
Substitute
R
0.2 m
for
, and
17 W m-K
for
k
0.2 m
17 W m-K
0.0117 m 2 -K W
Hence, t