Volume 04 Issue 03-2024
96
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
04
ISSUE
03
Pages:
96-101
SJIF
I
MPACT
FACTOR
(2022:
5.636
)
(2023:
6.741
)
(2024:
7.874
)
OCLC
–
1368736135
A
BSTRACT
In addition to discussing the current techniques for figuring out the thermal conductivity of these heat-
insulating coatings, the piece also details the outcomes of experimental research on the analysis and
advancement of energy-saving materials and their application to recently built modern buildings and
structures.
K
EYWORDS
Energy efficiency, heat insulating material, thermal conductivity, microsphere, heat insulating paint,
thermocouple sensors.
I
NTRODUCTION
By the 21st century, saving and rationally using
heat in housing and communal facilities, heat-
operated plants and factories remains an
important and priority task. With higher energy
prices and improved market conditions for
mechanical insulation products, designers and
plant owners are increasingly interested in using
them to reduce energy consumption by
improving energy efficiency.
The main part
Journal
Website:
http://sciencebring.co
m/index.php/ijasr
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Research Article
REASONABLE USE OF HEAT AND HEAT CONDUCTIVITY
PROPERTIES OF HEAT PRESERVING COATINGS
Submission Date:
March 18,
2024,
Accepted Date:
March 23, 2024,
Published Date:
March 28, 2024
Crossref doi:
https://doi.org/10.37547/ijasr-04-03-19
Boburjon Tojiboyev
Lecturer, Fergana Polytechnic Institute, Fergana, Uzbekistan
Maftuna Mullajonova
Assistant, Fergana Polytechnic Institute, Fergana, Uzbekistan
Volume 04 Issue 03-2024
97
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
04
ISSUE
03
Pages:
96-101
SJIF
I
MPACT
FACTOR
(2022:
5.636
)
(2023:
6.741
)
(2024:
7.874
)
OCLC
–
1368736135
Insulation is a material or set of materials used to
resist heat flow.
A coating is a liquid or semi-liquid material
suitable for application to thermal insulation or
other surfaces that dries or hardens to form a
protective coating and is 30 mils (0.76 mm) or
less thick per layer.
Combining the two definitions, it is considered
that "thermal insulation" does not include
thermal insulation, but can be used as thermal
insulation by itself.
We know that there are heat losses in pipes when
hot water comes from heat sources to the
population. We can see this in Figure 1 below
Figure 1. Factors causing loss of hot water from heat sources to the population
The heat-retaining coating that we are
researching
is
distinguished
by
its
comprehensive convenience and compliance with
the requirements for heat-insulating coatings.
Heat-insulating coating is an innovative energy-
saving material, a polymer-based composition
consisting of hollow ceramic microspheres.
It is advisable to use this coating in the
construction industry instead of the usual heat-
retaining (glass) materials.
Advantages:
Flame retardant (does not burn)
Resistant to acids and alkalis
It is easy to apply (it can be done by spraying with
a brush, roller and compressor);
Forms a very compact layer;
Not harmful to human health;
Does not harm nature;
Contains no harmful substances;
Fields of application
Volume 04 Issue 03-2024
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International Journal of Advance Scientific Research
(ISSN
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2750-1396)
VOLUME
04
ISSUE
03
Pages:
96-101
SJIF
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FACTOR
(2022:
5.636
)
(2023:
6.741
)
(2024:
7.874
)
OCLC
–
1368736135
By applying it to valves and valves, it allows to
preserve heat (usually glass is not wrapped in
valves and valves);
Heat is saved by applying it to industrial
containers;
Protects against noise and decay by spraying into
vehicle cabins;
Residential and industrial buildings (saves heat,
prevents mold and adds beauty to the city
appearance by applying it to the exterior and
interior);
It is very easy to apply, spray and coat;
Metal constructions (coolness in summer keeps
heat in winter);
Heating mains, pipes, ventilation ducts;
The scope of application of heat-retaining coating
is really impressive. Let's take a closer look at
examples of the use of material for different types
of surfaces.
Application of coating for the exterior of the
building:
Widely used as a facade. This material has
increased elasticity, so microcracks do not form
on it even with sudden changes in temperature.
Depending on the thickness of the layer, the heat-
retaining coating reduces heat loss by up to 30%,
which allows to increase the temperature in the
room by 4-6 °C in the cold season. In summer, on
the contrary, the coolness remains.
Application of coating for wooden walls:
Thermal insulation of wooden houses with
mineral wool or foam can significantly reduce the
aesthetic properties of the building, but the
application of the coating we offer is one of the
best solutions for wooden houses, not only
insulating the house, but also it allows to
emphasize the decorative properties of wood.
The
composition
includes
antibacterial
substances that eliminate the risk of parasites,
mold, pathogenic microbes. Due to its excellent
fire-resistant properties, the paint protects the
material from possible fires.
The coating can be applied to brick, wood, metal,
concrete, plastic and many other surfaces. The
surface is pre-cleaned, if necessary, it is cleaned
with special chemicals, the same composition is
diluted with water (no more than 5%) or any
acrylic paint, liquid glass mixture can be used as a
primer.
The coating cannot be applied to wet, icy surfaces.
The coating is laid in several layers. The number
of layers is determined depending on the tasks
and goals. It can be applied several times between
drying layers. The final thickness of the finished
coating is selected depending on the temperature
of the heat carrier and the desired surface
temperature.
The coating is easily sprayed (laid) on the surface
of any geometric shape using a brush, spatula,
roller or sprayer. The coating does not release
harmful compounds into the atmosphere. A
regular respirator is recommended when
working in a non-ventilated building, a respirator
is not necessary when working outdoors or in a
Volume 04 Issue 03-2024
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International Journal of Advance Scientific Research
(ISSN
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2750-1396)
VOLUME
04
ISSUE
03
Pages:
96-101
SJIF
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(2022:
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)
(2023:
6.741
)
(2024:
7.874
)
OCLC
–
1368736135
ventilated room. Average consumption for
obtaining a dry coating layer 1 mm thick: 750-
1000 g/m2.
My pen has the following features:
- low density. Bulk density - 0.35-0.6 g/cm3. The
density of the material
particle walls - 2.4-2.5 g/cm3. Particle size is 10-
500 microns. The thickness of the sphere shell is -
10% of the diameter.
- high fluidity. Due to the shape of the particles,
the microspheres have increased fluidity,
providing good fluidity as a free-flowing material.
filling out forms.
- low thermal conductivity. Thermal conductivity
of microspheres 0.06-0.08 W/m °C at 20 °C.
- strength. Microspheres are 3-10 times stronger
than most hollow glass spheres. Unlike glass
spheres, microspheres have a higher compressive
strength due to their stronger shell. Compressive
strength - 15-30 MPa.
- inactivity. Due to their chemical composition,
microspheres are resistant to solvents, organic
solutions, water, acids or
alkalies without losing their properties.
- heat resistance. Microspheres do not lose their
properties at temperatures above 1000 °C. The
melting temperature is not lower than 1200 °C.
Figure 2. Microsphere
In order to "warm up" all its parts and make the
transfer of heat flow stationary, in order to
stabilize the indicators of the equipment, the
indicators of all three thermocouple sensors were
measured for 0.5 hours at 5-minute intervals.
Volume 04 Issue 03-2024
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International Journal of Advance Scientific Research
(ISSN
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2750-1396)
VOLUME
04
ISSUE
03
Pages:
96-101
SJIF
I
MPACT
FACTOR
(2022:
5.636
)
(2023:
6.741
)
(2024:
7.874
)
OCLC
–
1368736135
To calculate the individual error of the
thermocouple sensors, before the start of the
experiments, the temperature of each sensor
immersed in a Dewar container filled with melted
ice was measured, and the temperature deviation
from 0°C was taken into account during the
experiments.
Initially, testing was carried out to determine the
reliability of the equipment for measuring the
thermal conductivity of heat-insulating paint.
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