Preparing of the Nano ATO Heat-Insulation Glass Coating

2011 ◽  
Vol 391-392 ◽  
pp. 859-863
Author(s):  
Zhi Xiang Huang ◽  
Xiang Yu Zhang ◽  
Xiao Yun Liu ◽  
Qi Xin Zhuang
Keyword(s):  
Visible Light ◽  
Tin Dioxide ◽  
Heat Insulation ◽  
Glass Coating ◽  
Thermal And Mechanical Properties ◽  
Silicone Emulsion ◽  
Good Energy ◽  
Saving Effect ◽  
Insulation Performance ◽  
Good Heat

In this paper, a kind of nano ATO heat-insulation glass coating was prepared by using silicone emulsion and nano tin dioxide (ATO) powder with ethanol as solvent. The properties of glass coating, such as transmittance, as well as thermal and mechanical properties, and the optimization of the ATO level were discussed. The results showed that this glass coating had good transmittance of visible light and good heat-insulation performance. The transmittance of visible light was above 75% and the highest temperature difference between the heat insulating and ordinary glass is 17°C. It had good energy-saving effect and could be widely used as architecture glass and automobile glass coating.

Performance of Thermal Insulation Reflective Composite Coatings

2011 ◽  
Vol 239-242 ◽  
pp. 1771-1774 ◽  
Author(s):  
Meng Qiu Jia ◽  
Yu Hong Jin
Keyword(s):  
Aqueous Solution ◽  
Thermal Insulation ◽  
Heat Insulation ◽  
Electrochemical Impedance ◽  
Composite Coatings ◽  
Insulation Property ◽  
Corrosion Properties ◽  
Rutile Titanium Dioxide ◽  
Insulation Performance ◽  
Good Heat

Reflective topcoat and thermal insulation mid-coat composite coatings system was used in this work. The effect of the content of the hollow glass micro-beads and rutile titanium dioxide on the heat insulation performance and the reflectivity of the coatings were investigated, respectively. The heat insulation performance and the reflectivity of the thermal insulation reflective composite coatings (TIRCCs) were characterized by self-prepared experimental device. The results showed the good heat insulation property, and the insulated temperature reached 12-15°C, and the reflectivity was up to 95%. The anti-corrosion and anti-penetration of the TIRCCs were studied by electrochemical impedance spectroscopy (EIS) technique. The results showed that the resistance of the TIRCCs still be maintained at 108Ω·cm2 after 30 days in the 3.5% aqueous solution of sodium chloride. So The TIRCCs can be used on the surface of the steal structure for decreasing the temperature and enhancing anti-corrosion properties.

scholarly journals Influence of the Needle Number on the Heat Insulation Performance of Pre-oxidized Fibre Felts

2018 ◽  
Vol 26 (3(129)) ◽  
pp. 80-86
Author(s):  
Xiaoming Zhao ◽  
Xiaoming Zhao ◽  
Yuanjun Liu ◽  
Yuanjun Liu ◽  
Tenglong Liang
Keyword(s):  
Steady State ◽  
Production Process ◽  
Temperature Difference ◽  
Room Temperature ◽  
Heat Insulation ◽  
Major Influence ◽  
Production Processes ◽  
Increasing Temperature ◽  
Insulation Performance ◽  
Good Heat

Many factors were needed to be considered to prepare pre-oxidised fibre felts with excellent heat insulation performance, and different production processes showed differences in the heat insulation performance of pre-oxidised fibre felts. In order to probe into the influence of the production process on the heat insulation performance of materials, a large number of experiments were needed to be carried out. For needle-punched nonwoven pre-oxidised fibre felts, web features, needle characteristics and the needle process will all affect the structure of pre-oxidised fibre felts, thus bringing a major influence on the heat insulation performance of pre-oxidised fibre felts. In this paper, the influence of the needle number on the heat insulation performance of pre-oxidised fibre felts was mainly studied. Results showed that an increase in the needle number will cause a decrease in the thickness and gram weight of pre-oxidised fibre felts, and a weakening trend in the heat insulation performance of pre-oxidiaed fibre felts with an increasing needle number at room temperature and at 100-200 °C was shown. Moreover when the needle number was 1 and 2, the pre-oxidised fibre needled felts had good heat insulation performance, and for pre-oxidized fibre felts at different needle numbers with increasing temperature, the temperature difference in a steady state increased linearly.

scholarly journals Influence of Far Infrared TiO2 and Multi-Walled Carbon Nanotubes Coatings on the Performance of a Hot Water Heater

2021 ◽  
Vol 11 (15) ◽  
pp. 7043
Author(s):  
Tun-Ping Teng ◽  
Shang-Pang Yu ◽  
Yeou-Feng Lue ◽  
Qi-Lin Xie ◽  
Hsiang-Kai Hsieh ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Heating Rate ◽  
Heat Insulation ◽  
Far Infrared ◽  
Hot Water ◽  
Insulation Material ◽  
Water Heater ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Insulation Performance

This study selects titanium dioxide (TiO2) and multi-walled carbon nanotubes (MWCNTs) as far-infrared materials (FIRMs), and further adds water-based acrylic coatings to prepare far-infrared coatings (FIRCs). FIRCs are uniformly coated on #304 stainless steel sheets to make the test samples, which are then installed between the shell and insulation material of the hot water heater to measure the influences of various FIRCs on the performance of the hot water heater. The research results show no significant difference in the heating rate or heat insulation performance of the hot water heater with or without FIRCs coating. However, the uniformity of the water temperatures of the test samples is significantly improved with FIRCs. Considering that the uniformity of water temperature will inhibit the heating rate and heat insulation performance of the hot water heater, TiO2-FIRC should provide better performance improvement when applied to the hot water heater in this study. The application of TiO2-FIRC to large-scale hot water heaters with a high aspect ratio will effectively improve the quality of hot water supply in the future.

Study on Non-Isothermal Crystallization Kinetic of Tundish Covering Fluxes

2011 ◽  
Vol 266 ◽  
pp. 102-105
Author(s):  
Li Feng Sun ◽  
Hong Po Wang ◽  
Chun Lai Liu ◽  
Yong Zou ◽  
Mao Fa Jiang
Keyword(s):  
Isothermal Crystallization ◽  
Heat Insulation ◽  
Crystallization Kinetic ◽  
Avrami Equation ◽  
Crystallization Time ◽  
Resistance Furnace ◽  
Crystallization Behaviors ◽  
Good Heat ◽  
Casting Production ◽  
Electrical Resistance Furnace

Basic tundish covering flux is widely used in continuous casting production of high quality steel because of good heat insulation function and the properties of absorbing inclusions. However, there is a serious problem of incrustation caused by basic tundish covering flux in process of pouring and it could be dramatically influenced by the crystallization behaviors of covering flux. In the paper, the crystallization time and ratio of basic tundish covering fluxes were investigated by high temperature electrical resistance furnace and single hot thermocouple apparatus. Based on the crystallization kinetic knowledge and experimental results, Avrami equation was modified, the non-isothermal crystallization equation that could quantitatively describe the crystallization behaviors of basic tundish covering fluxes was established.

Low-Cost Heat Insulating Film Design for BIPV Modules Based on Multi-Layer Inorganic Materials

2012 ◽  
Vol 452-453 ◽  
pp. 1424-1428
Author(s):  
Han Min Tian ◽  
Li Jia Guo ◽  
Wen Feng Duan ◽  
Rui Xia Yang ◽  
Feng Lan Tian
Keyword(s):  
Refractive Index ◽  
Visible Light ◽  
Absorption Rate ◽  
Heat Insulation ◽  
Low Cost ◽  
Heat Rate ◽  
Optimum Combination ◽  
Inorganic Materials ◽  
Tempered Glass ◽  
Glass Panel

By analyzing the transmitionce and heat rate of insulating antireflection films conposed by refractive-index adjustable SiO2 layer and TiO2 layers, the optimum combination of antireflection films of BIPV is obtained. The absorption rate at the ultraviolet part that wavelenght excessive inadequate 400nm of the optimized fils is 99.9%, which are directly designed on the surface of the low iron tempered glass panel of BIPV, and in the wavelength range 400nm-800nm, the visible light transmitionce rate is up to 99.5%, and the heat that wavelenght excessive 800nm is reflected of 20%. For the multilayer heat insulation films are composed with the same kind of material while with different refractive indexes, there is no projecting stress between these films and no constraints during the production process of different films for the possible low cost heat insulating of BIPV.

scholarly journals Research on Low-Brightness and High-Reflective Coatings Suitable for Buildings in Tropical Areas

Coatings ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 829
Author(s):  
Xian Rong ◽  
Lichao Jiao ◽  
Xiangfei Kong ◽  
Guangpu Yuan
Keyword(s):  
Energy Saving ◽  
Heat Insulation ◽  
Residential Building ◽  
Maximum Temperature ◽  
Kuala Lumpur ◽  
Nano Tio2 ◽  
Insulation Coating ◽  
Tropical Areas ◽  
Saving Effect ◽  
Reflective Coatings

In this article, we mixed hollow glass beads with nano-TiO2 and iron oxide red in a certain proportion to prepare a low-brightness, high-reflective, safe, and durable cooling coating throughout the experiments. The coating is suitable for energy-saving in tropical areas. To discuss the energy saving effects of the coating on an exterior envelope in tropical areas, a comparative analysis for two scenario models of a two-story residential building in Kuala Lumpur, Malaysia was conducted. The results indicated that the heat reflective insulation coating could reduce the exterior envelope surface temperature effectively, and the maximum temperature change was about 6–8 °C. Through calculations, it was found that the annual energy saving rate was 12.9%, which showed that the energy saving effect of the heat insulation coating was obvious in Kuala Lumpur. The brightness of the coating was less than 50%, and its comfort and safety met the requirements.

Preparation and Characterization of CCCW/Foamed Concrete Composite

2011 ◽  
Vol 261-263 ◽  
pp. 13-18
Author(s):  
Ke Qing Li ◽  
De Ping Chen ◽  
Shi Li Zhang ◽  
Bao Shun Liu
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Water Absorption ◽  
Heat Insulation ◽  
High Humidity ◽  
Underground Engineering ◽  
New Approach ◽  
Foamed Concrete ◽  
Insulation Performance

Aimed at improving the waterproofing property of foamed concrete, a heat-insulating and waterproofing composite applied in underground engineering was prepared by using cementitious capillary crystalline waterproofing material and foamed concrete. The properties of foamed concrete and composite such as compressive strength, water absorption and thermal conductivity were tested and contrasted, and the compounding reaction mechanism was analyzed. The results show that, compared with foamed concrete, the water absorption of composite has been significantly reduced while the heat-insulating property of foamed concrete is maintained and the overall waterproofing and heat-insulation performance has been significantly improved. A new approach solving underground heat-harm such as high temperature and high humidity is provided.

A New Type of Energy-Saving Magnetic Amplifier Controlling Inductive Load

2011 ◽  
Vol 347-353 ◽  
pp. 3995-3998
Author(s):  
Shuai Yang ◽  
Lan Xue ◽  
Jian Sheng Cheng
Keyword(s):  
Energy Saving ◽  
Iron Core ◽  
Inductive Load ◽  
Sodium Lamp ◽  
Core Column ◽  
Good Energy ◽  
New Type ◽  
Magnetic Amplifier ◽  
Saving Effect ◽  
High Pressure Sodium Lamp

A new type of energy-saving magnetic amplifier controlling current and voltage of inductive load has been designed. The energy-saving magnetic amplifier with two windings wrapped across one iron core column can change impedance of the main winding by means of PWM controlling AC excitation current. The energy-saving magnetic amplifier has not used a special adjustable DC voltage circuit, has overcome disadvantages of complicated manufacturing process for the traditional excitation amplifier.The application shows the energy-saving excitation amplifier can achieve stepless dimming for high pressure sodium lamp to good energy-saving effect. The use cost of excitation amplifier is lower as simple production process, so its promotional value is great.

Enhancement of Mechanical and Thermal Characteristics of Polyurethane-Based Composite with Silica Aerogel

2019 ◽  
Vol 951 ◽  
pp. 63-67 ◽  
Author(s):  
Jae Hyeok Ahn ◽  
Jeong Hyeon Kim ◽  
Jeong Dae Kim ◽  
Seul Kee Kim ◽  
Kang Hyun Park ◽  
...  
Keyword(s):  
Silica Aerogel ◽  
Heat Insulation ◽  
Porous Silica ◽  
Thermal Characteristics ◽  
Weight Percent ◽  
Polyurethane Foams ◽  
Mechanical And Thermal Properties ◽  
Efficient Alternative ◽  
Insulation Performance ◽  
Compressive Tests

Synthesis of polyurethane foams (PUF) with silica aerogel nanoparticles is an efficient alternative to improve the mechanical and thermal properties of the foam owing to the outstanding thermal insulation properties of porous silica aerogel nanoparticles. Silica aerogel was added into polyurethane foams at different weight percent (0, 1, 3, 5 wt.%) to observe the changes in the material properties. To confirm the applicability of the synthesized PUF to the heat insulating material, compressive tests were carried out at ambient and cryogenic temperature (20, -163°C) and the thermal conductivities were measured according to wt.%. In addition, the cell microstructure was identified using FE-SEM to analyze the effect of silica aerogels on the foam morphologies. As a result of the experiment, it was confirmed that the mechanical strength and the heat insulation performance were improved in the polyurethane foam containing 1 wt.% of silica aerogel.

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