Effect of Heat-Reflective Insulation Coating on Exterior Walls of Building Energy Consumption in Summer

2011 ◽  
Vol 105-107 ◽  
pp. 922-925 ◽  
Author(s):  
Chao He ◽  
Wei Lin Guo ◽  
Yi Yun Huang
Keyword(s):  
Energy Saving ◽  
Temperature Change ◽  
Air Temperature ◽  
Heat Insulation ◽  
Maximum Temperature ◽  
Heat Gain ◽  
Insulation Coating ◽  
Building Wall ◽  
The Mean ◽  
Saving Effect

To discuss the effect of energy saving of heat-reflective insulation coating on exterior walls of building, the wall temperature change of two test rooms with heat insulation or not in Hangzhou has been monitored in summer, and the heat flux data of east, south and west walls were analyzed. The results indicate that the temperature of outside wall surface with the heat reflective insulation coating is reduced effectively, and the maximum temperature change was about 9, 10°C. There is a positive proportional between the mean daily air temperature and heat gain that the heat gain increases with the mean daily air temperature. By calculating, the higher the air temperature, the more the cooling effect of coating in summer. But the higher the mean daily temperature do not mean that the more heat gain in summer. The result shows the energy saving effect of the heat insulation coating on building wall was very obvious in summer in Hangzhou.

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.

Effect of Heat-Reflective Insulation Coating of Building Energy Saving in Summer

2013 ◽  
Vol 427-429 ◽  
pp. 368-371
Author(s):  
Chao He ◽  
Yang Wang ◽  
Yi Bin Chen ◽  
Teruyuki Fukuhara
Keyword(s):  
Energy Saving ◽  
Electricity Consumption ◽  
Building Energy ◽  
Heat Gain ◽  
Air Conditioning System ◽  
Exterior Surface ◽  
Insulation Coating ◽  
Building Energy Saving ◽  
Saving Effect ◽  
Reflective Coatings

In order to discuss the effect of energy saving of heat-reflective insulation coating on exterior walls of building, the wall temperature change of two test rooms with heat insulation or not in Hangzhou has been monitored in summer, and the heat flux data of east, south and west walls were analyzed. The results indicate that the reflective coatings reduce the exterior surface temperature by up to 7 to 8°C. The reduction in heat gain of east, south and west walls is significant, which is the cooling effect. The total surface heat gain of exterior walls without reflective coatings is 2.44 times larger than those without them. In particular, the heat gain of walls with reflective coatings is nearly 5.27 times more than that of walls without reflective coatings. The reduction in electricity consumption of air-conditioning system in the building with reflective coatings is 2.5KWh/m2 per month by calculation, which well proves the energy saving effect of reflective coatings.

scholarly journals Temperature Change and Its Elevation Dependency in the Source Region of the Yangtze River and Yellow River

2014 ◽  
Vol 6 (2) ◽  
pp. 124 ◽  
Author(s):  
Chongyi E ◽  
Hongchang Hu ◽  
Hong Xie ◽  
Yongjuan Sun
Keyword(s):  
Temperature Change ◽  
Minimum Temperature ◽  
Yangtze River ◽  
Yellow River ◽  
Source Region ◽  
Maximum Temperature ◽  
Climatic Data ◽  
The Yangtze River ◽  
Extreme Minimum Temperature ◽  
The Mean

The study of temperature change and its elevation dependency in the source region of the Yangtze River and Yellow River have been insufficient owing to the lack of adequate observation stations and long-term climatic data. In this study five temperature indices of 32 stations from 1961 to 2007 in and near the source region are used. The 32 stations all have experienced significant warming; the warming amplitudes are higher than the mean warming amplitude of the Qinghai-Tibetan plateau. The warming amplitudes and the numbers of stations showing significant warming trends in mean minimum temperature and extreme minimum temperature are higher than that of the mean maximum temperature and extreme maximum temperature. The elevation dependency of climatic warming and the amount of significant warming stations are not obvious; the influence of human activity and urbanization may be higher. The warming amplitudes of 26 stations above 3000 m tend to be uniform, and there is no significant law at 6 stations below 3000 m. On the contrary, the ratio of stations showing significant warming in minimum temperature above 4000 m is far less than that of the stations below 4000 m.

scholarly journals Research On Solar Energy Collector With Cell Polycarbonate Absorber

2015 ◽  
Vol 1 ◽  
pp. 213
Author(s):  
Henriks Putāns ◽  
Viktorija Zagorska ◽  
Imants Ziemelis ◽  
Zanis Jesko
Keyword(s):  
Experimental Investigation ◽  
Solar Radiation ◽  
Air Temperature ◽  
Heat Carrier ◽  
Heat Insulation ◽  
Ambient Air ◽  
Maximum Temperature ◽  
Experimental Examination ◽  
Ambient Air Temperature ◽  
Flat Plate Solar Collector

A flat plate solar collector with cell polycarbonate absorber and transparent cover has been made and its experimental investigation carried out. The collector consists of a wooden box, into which, a layer of heat insulation with a mirror film and 4 mm thick cell polycarbonate sheet, as the absorber, are placed. The coherence between collector’s efficiency, heat carrier and ambient air temperature, as well as intensity of the solar radiation and heat power in the experimental investigation has been obtained. During the experimental examination the maximum temperature of the heat carrier reached 80˚C at the intensity of solar radiation about 0.8 kW/m2 and ambient air temperature around 32˚C. The efficiency of the collector reached 33-60%, depending on the intensity of solar radiation and surrounding air temperature.

Energy Conservation Analysis on Self-Thermal Insulation Walls Structural System in Cold Areas

2012 ◽  
Vol 608-609 ◽  
pp. 1778-1782 ◽  
Author(s):  
Li Bai ◽  
Yi Ran Zhang ◽  
Jia Rui Chu
Keyword(s):  
Energy Conservation ◽  
Energy Saving ◽  
Thermal Insulation ◽  
Building Energy ◽  
Simulation Software ◽  
Air Conditioner ◽  
Building Energy Conservation ◽  
Modeling Analysis ◽  
Building Wall ◽  
Saving Effect

Analysis of Chinese current development status of wall insulation technology, aim at the importance of building energy conservation in cold areas. Point out that developing energy-saving building wall is the key to development of building energy saving. In this paper, put a kind of an advanced self-thermal insulation walls as an example in Changchun area. Adopt Tsinghua university’s building thermal environmental simulation software DeST-c. Modeling analysis of building’s heating air conditioner operation consumption in the whole year under three different kinds of walls. Through the comparison we know that the structure adopting new self-thermal insulation wall has the most remarkable energy saving effect.

Analysis of the Solar Wall Heat Transfer and Energy Saving of Residential Ventilation

2012 ◽  
Vol 608-609 ◽  
pp. 1673-1676
Author(s):  
Yue Ren Wang ◽  
Wei Qi ◽  
Nan Wu
Keyword(s):  
Energy Saving ◽  
Indoor Air ◽  
Maximum Temperature ◽  
Wall Heat Transfer ◽  
Air Supply ◽  
Channel Thickness ◽  
Solar Wall ◽  
Saving Effect ◽  
Effective Use ◽  
Cavity Width

It is the considerable measure that adopting the ventilation solar wall to make up the indoor air in winter because this method embodies the effective use of renewable energy. This paper analyzes the needed volume of make-up air in the different conditions of indoor air exhaust in winter and builds a solar wall to heat the make-up air. Under the conditions of different solar wall size of air channel thickness and so on, Conclusions can be simulated by using CFD software. When the optimum cavity width B is 50mm, the height of air supply outlet D is 30mm and the volume of make-up air is 200 m3/h,the maximum temperature rise of the air rises to 24°C.But when the volume of make-up air is 600 m3/h, there has the best energy-saving effect.

Experimental Study of Energy Saving Effect of Building Envelope in Winter

2011 ◽  
Vol 121-126 ◽  
pp. 2741-2747
Author(s):  
Hou Hua Wang ◽  
Tao Zhang ◽  
Qiu Lian Xiao
Keyword(s):  
Experimental Study ◽  
Energy Saving ◽  
Temperature Difference ◽  
Average Energy ◽  
Internal Surface ◽  
Mean Value ◽  
Building Envelope ◽  
Simulation And Experiment ◽  
The Mean ◽  
Saving Effect

This paper presents an experimental study on the energy saving effect of building envelope in winter in Chongqing city. The basic cubicle was adopted for comparison. Experiments show that when energy saving measurements are applied in the external walls and windows, energy saving cubicle has an average energy efficiency rate of 32.68%, 7.68% over the target value of the standard. The indoor temperature of the energy saving cubicle is higher than the basic one’s. The internal surface temperature and the temperature difference between the exterior and interior of the insulation wall of the energy saving cubicle are both higher than that of the basic cubicle, the mean value is 1.28°C and 1.90°C respectively. And the temperature difference of the insulation glass is higher than that of the single glass, with a maximum value of 6.32°C. Daily simulation of the two cubicles is addressed by VisualDOE-4.0, the mean error between simulation and experiment is 16.16%, illustrating the effectivity and the accurateness of the VisualDOE-4.0.

Analysis on the Energy-Saving Property of Solar Heat Reflective Coatings on Building in Beijing

2014 ◽  
Vol 787 ◽  
pp. 159-163 ◽  
Author(s):  
Qian Jin Mao ◽  
Qiu Rui Lv ◽  
Ya Li Wang ◽  
Xiao Yu Ma ◽  
Rui Wang ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Building Envelope ◽  
Heat Gain ◽  
Reflective Coating ◽  
South Wall ◽  
The Common ◽  
North Wall ◽  
Saving Effect ◽  
Reflective Coatings

To discuss the effect of energy saving of heat-reflective coating on building, the heat gain of exterior building envelope in summer and winter in Beijing has been calculated. The results indicated that the higher the reflectivity of coating, the better the energy saving effect. The energy consumption of roof and different direction walls were analyzed. The energy saving effect on roof is the best, however the effect is not obvious on the east and west walls. The heat reflective coating has no effect on north wall but exhibits effect on south wall. The energy saving effect of brick red heat-reflective coating is not obvious compared with the common brick red coating.

Study on Energy Saving Effect of Heat-Reflective Insulation Coating on Exterior Walls of Building in Summer

2011 ◽  
Vol 71-78 ◽  
pp. 3657-3661 ◽  
Author(s):  
Wei Lin Guo ◽  
Chao He ◽  
Teruyuki Fukuhara
Keyword(s):  
Energy Saving ◽  
Wall Temperature ◽  
Electricity Consumption ◽  
The Other ◽  
Air Conditioning System ◽  
Maximum Reduction ◽  
Insulation Coating ◽  
Identical Test ◽  
Saving Effect ◽  
Reflective Coatings

This paper presents an experimental study on the energy saving effect of reflective coatings on exterior walls. Two identical test buildings were built in Zhejiang College of Construction, one of which is covered with reflective coatings and the other not. The wall temperature fluctuation of both buildings is monitored in summer, which includes the east, south and west walls. The results indicate that the maximum reduction of wall temperature is 9-10 °C in the building with reflective coatings, compared with wall temperature in the other without it. The reduction in heat gain of east, south and west walls is obvious, so is the cooling effect. The reduction in electricity consumption of air-conditioning system in the building with reflective coatings is 0.94 KWh/m2 per month times by calculation, which well proves the energy saving effect of reflective coatings.

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