INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 03,2025
Journal:
https://www.academicpublishers.org/journals/index.php/ijai
page 1287
ANALYSIS OF THE EFFECTIVENESS OF HYDROCARBON VAPOR
CONDENSATION
Sharipov K.K., Abdullaeva S.Sh.,
Khalilov Sh.U., Xadjibayev. A.
Tashkent Institute of Chemical Technology
Annotation:
This article analyzes the heat transfer process during the condensation of
hydrocarbon vapors. The study focuses on determining the heat transfer coefficient in both
vertical and horizontal condensers. Experimental research was conducted under specific
conditions, including a pressure of 200-250 kPa and a vapor flow rate of 0.000122-0.000367 kg/s.
The results demonstrate that the heat transfer coefficient increases with rising temperature and
that horizontal condensers exhibit 1.5 times higher efficiency than vertical ones. The findings
highlight the advantages of using horizontal condensers for improved energy efficiency in
industrial applications.
Keywords:
Heat transfer, condensation, hydrocarbon vapors, heat exchangers, cooling process,
vertical condenser, horizontal condenser, energy efficiency.
This article discusses the analysis of heat transfer during the condensation of hydrocarbon vapors.
The study calculated the heat transfer coefficient during the condensation process and examined
how this process occurs in horizontal and vertical types of equipment.
The temperature distribution between the gas condensate vapors and the coolant over time and
distance was studied using an experimental setup. This process was conducted at a pressure of
200-250 kPa and a vapor flow rate of 0.000122-0.000367 kg/s. In the experiments, the cooling
water flow rate was 5 liters per minute. The properties of water were determined based on its
temperature using data obtained from scientific sources.
When calculating the heat transfer coefficient, the physicochemical properties of water and gas
condensate were measured based on the experimental results, including density, dynamic
viscosity, and thermal conductivity. Additionally, appropriate equations using the Reynolds
number were applied to calculate the heat transfer process in heat exchange equipment:
Re =
AV
πd
2
n
∙
ρ
μ
(1)
Here
V - volumetric flow rate of water in m
3
/s;
d
vn
- inner diameter of the condenser tubes in m;
n - number of tubes in the device, units
ρ - density of water, kg/m
3
;
μ - dynamic viscosity of water, Pa·s.
According to the research results, it was determined that when the water flow rate changes, its
movement undergoes a transformation process. In this case, specific equations were selected for
the vertical and horizontal types of heat exchangers:
Nu = 0.008 ∙ Re
0.9
∙ Pr
0.43
(2)
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 03,2025
Journal:
https://www.academicpublishers.org/journals/index.php/ijai
page 1288
The heat transfer coefficient of cooling water is determined using the Nusselt number:
a
2
=
Nuλ
d
вн
(3)
The heat release coefficient of gas condensate vapors for vertical and horizontal condensers was
found using the following equations:
For a vertical condenser:
a
1
= 378λ
кн
∙
ρ
кн
2
d
нр
n
T
µ
кн
G
p
0.33
(4)
For a horizontal condenser:
a
1
= 202 ∙ (p) ∙ λ
кн
∙
ρ
кн
2
L
T
n
T
µ
кн
G
p
0.33
(5)
Using these equations, the overall heat transfer coefficient is determined by the following
formula:
K =
a
1
a
2
a
1
+a
2
(6)
The calculation results show the heat transfer coefficients at different temperatures. The obtained
values for vertical and horizontal condensers are presented in the tables.
Table 1
The heat transfer coefficient of gas condensate vapors (1), the heat transfer coefficient of cooling
water (2), and the total heat transfer coefficient (K) of the device in a vertical tubular condenser:
Table 2
Gas
condensate
temperature, °C
Thermal
conductivity
coefficient 1,
W/ (m2·K)
Cooling
water
temperature, °C
Heat transfer
coefficient 2,
W/ (m2·K)
Heat transfer
coefficient to
the device K,
W/ (m2·K)
t
н1
t
к1
t
н2
t
к2
174
24
2146
18
34
293
257
180
24
2155
18
25
302
264
186
24
2163
18
27
311
271
192
24
2172
18
24
319
278
198
24
2238
18
24
335
291
Gas
condensate
temperature, °C
Heat
transfer
coefficient 1, W/
(m
2
·K)
Cooling water
temperature, °C Heat
transfer
coefficient
2,
W/ (m
2
·K)
Heat
transfer
coefficient K to
the device, W/
(m
2
·K)
t
н1
t
к1
tн2
tк2
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 03,2025
Journal:
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page 1289
Figure 1 - Dependence of the heat transfer coefficient of gas condensate vapors in
horizontal (1) and vertical (2) tubular condensers on the average temperature
:
The heat transfer coefficient of gas condensate vapors in a horizontal tubular condenser (1), the
heat release coefficient of cooling water (2), and the total heat transfer coefficient (K) of the unit:
This figure shows the change in the heat transfer coefficient of gas condensate vapors depending
on the average temperature.
With increasing temperature, the heat transfer coefficient in the horizontal capacitor increased by
41 W/ (m
2
·K), and in the vertical - by 34 W/ (m
2
·K).
The α1 coefficient (the heat transfer coefficient of gas condensate) increases easily with rising
temperature. This enhances the efficiency of gas condensate.
158
17
7820
20
66
428
405
160
19
8931
20
63
450
428
165
15
9460
20
61
459
437
168
14
9519
20
56
462
440
172
14
9687
20
50
468
446
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 03,2025
Journal:
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page 1290
The coefficient α2 (the heat transfer coefficient of cooling water) is also directly related to
temperature. Its values vary with temperature, but it remains lower than the α1 coefficient. An
increase in temperature leads to a significant rise in the α1 coefficient. For example, when
increasing from 158°C to 172°C, the coefficient α1 rises from 7820 W/ (m
2
·K) to 9687 W/
(m
2
·K).
Figure 2. The values of the coefficients α1 and α2 for the gas condensate temperature (°C)
are shown.
The coefficient α2 is also directly related to temperature, but its rate of increase is lower than α1.
As evident from the calculations presented in the article, heat exchange in horizontal installations
is 1.5 times more efficient than in vertical ones. Therefore, the use of horizontal devices for
condensing vapors of hydrocarbon raw material fractions is advisable for efficient energy use.
In this new graph, different coefficients are shown with various line styles and symbols:
1. α
1
(Heat Release Coefficient) - with solid lines and square markers.
2. α
2
(Cooling Coefficient) - with dashed lines and triangular markers.
3. K (Total heat transfer coefficient) - with dash-dot lines and circular markers.
• As the gas condensate temperature increases, both the heat release coefficient (α
1
) and cooling
coefficient (α
2
) gradually rise.
• The K-total heat transfer coefficient is influenced by both coefficients and steadily increases
with rising temperature.
Conclusion
This study examined the heat transfer process during the condensation of hydrocarbon vapors.
The results show that the efficiency of heat exchange differs between vertical and horizontal tube
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 03,2025
Journal:
https://www.academicpublishers.org/journals/index.php/ijai
page 1291
condensers. In both types of condensers, the heat transfer coefficient increases with rising gas
condensate temperature, but this process is more effective in horizontal condensers.
According to the research results, the heat transfer coefficient in horizontal tubular condensers is
1.5 times higher than in vertical devices, which allows for a reduction in energy consumption.
Additionally, the cooling process in such devices is considered optimal.
The research findings have significant practical importance for the design and modernization of
industrial devices used in hydrocarbon vapor condensation processes. To reduce energy
consumption and optimize the production process, the use of horizontal condensers is
recommended.
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