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failingschooll0l
04.07.2020 •
Engineering
Steam is contained in a closed rigid container which has a volume of 2 initially the the pressure and the temperature is the remeraturedrops as a result of heat transfer to the surroundings. Determine
a) the temperature at which condensation first occurs, in °C,
b) the fraction of the total mass that has condensed when the pressure reaches 0.5 bar.
c) What is the volume, in m3, occupied by saturated liquid at the final state?
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Ответ:
The given question is incomplete. The complete question is as follows.
Steam is contained in a closed rigid container with a volume of 1 m3. Initially, the pressure and temperature of the steam are 10 bar and 500°C, respectively. The temperature drops as a result of heat transfer to the surroundings. Determine
(a) the temperature at which condensation first occurs, in
,
(b) the fraction of the total mass that has condensed when the pressure reaches 0.5 bar.
(c) What is the volume, in
, occupied by saturated liquid at the final state?
Explanation:
Using the property tables
(a) During the process, specific volume remains constant.
T =![(150 - 160)^{o}C](/tpl/images/0701/0031/f0cc2.png)
Using inter-polation we get,
T =![154.71^{o}C](/tpl/images/0701/0031/bc098.png)
The temperature at which condensation first occurs is
.
(b) When the system will reach at state 3 according to the table at 0.5 bar then
Let us assume "x" be the gravity if stream
=![\frac{0.3540 - 0.00103}{3.240 - 0.00103}](/tpl/images/0701/0031/61c66.png)
= 0.109
At state 3, the fraction of total mass condensed is as follows.
= 0.891
The fraction of the total mass that has condensed when the pressure reaches 0.5 bar is 0.891.
(c) Hence, total mass of the system is calculated as follows.
m =![\frac{v}{v_{1}}](/tpl/images/0701/0031/4959b.png)
=![\frac{1}{0.354}](/tpl/images/0701/0031/01a75.png)
= 2.825 kg
Therefore, at final state the total volume occupied by saturated liquid is as follows.
=![2.825 \times 0.00103](/tpl/images/0701/0031/1c0c8.png)
=![2.9 \times 10^{-3} m^{3}](/tpl/images/0701/0031/8b05b.png)
The volume occupied by saturated liquid at the final state is
.
Ответ:
Ruthford's theory was identified using a beam of particles and detecting the scattering of the particles after they hit gold foil.
Explanation:
Hope it helps ya sunshine x