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A significant portion of the total primary energy is consumed by today's buildings in developed countries. In many of these buildings, the energy consumption can be significantly reduced by adopting energy efficiency strategies. Due to environmental concerns and the high cost of energy in recent years there has been a renewed interest in building energy efficiency. This article strives to make an...
Combined with the climatic characteristics of hot-summer and cold-winter area, describe the current requirements and energy saving in buildings of the rural residential in the hot-summer and cold-winter area of China. In the view of the appropriate energy-saving and insulation technology applied on walls, windows, roof and other parts of the building, and introduce the application of some relevant...
Glass curtain wall atrium can provide the building with good lighting and sight-seeing, but since thermal property of glass is unstable, interior environment usually alters with the climate, air condition system is required to reach the comfortable level of body. Hangzhou is taken as a typical example in subtropical monsoon climate region to certificate the limitation of glass atrium use in the south...
In arid and semi-arid areas, the diurnal and annual temperature ranges are large. Taking reasonable measures of thermal insulation, the indoor thermal environment can be comfort. The traditional dwellings, in arid and semi-arid areas of western China, have energy efficient characteristic, among which Yaodong is the typical representative. In this paper, the temperature in Yaodong wall will be tested...
Building energy consumption is tremendous in China. The energy consumption of building envelope walls is 4- 5 times higher compared with that of developed countries. The envelope walls built by solid clay brick and other masonry materials have a poor thermal insulation performance, and can not meet the requirements of building energy efficiency. This paper investigates the thermal performance in winter...
The outer surface of external wall with lightweight thermal insulating layer is easily destructed when a building is in service. In this paper, the basic destructive forms are sorted out, such as surface cracking, hollowing, shedding. And the correlating factors which cause different fractures have also been discussed. By the survey and analyses, the lack of mechanical design, improper application...
Typical residential earth buildings in Southern Hunan area are of civil engineering structure, namely, adobe walls, wooden doors and windows, wooden roof truss covered by blue tiles. In this paper, the author made a field mapping and energy consumption survey on a typical residential building in Southern Hunan area, and conducted an indoor test on heat and humidity index in summer and winter. The...
Based on climate of Chongqing, using DeST-h software, this article simulated air conditioning load in winter and summer and indoor natural temperature in transitional seasons of a Chongqing model building with different external walls and windows, obtained that when the thickness of insulation layer is 30 mm or the self-thermal insulation is ceramic concrete wall or ash foam concrete wall, the effect...
The building thermal insulation is an important technology of building energy efficiency. Taking the typical residential in the cold region-Beijing and those of South China-Guangzhou as the template, this paper has conducted simulation analysis on their respective energy consumption when adopt exterior thermal insulation walls or interior thermal insulation walls. The study has shown that the exterior...
Due to wildly application in civil engineering and industry building, the safety requirement of outer wall external thermal insulating system is obliged. Based on the present standard of tapestry brick of construction engineering in China, the adhesive strength tests for the outer wall have been carried out. Due to the tests of one EPS external thermal insulating system, we introduce a new elastic...
Wall insulation is one of the commonly used energy-saving measures. But many factors, such as climate, building type and indoor heat gain, have great influence on the effectiveness of building insulation. In this paper, the influence of thickness of building insulation layer on the building HVAC energy consumption has been analyzed for three different indoor heat gain, 20, 50, 80 W/m2, for an office...
The thermal conductivities of wall material were measured under various water contents to investigate the effect of water content on the thermal insulation properties. The results show that water contents have adverse impact to heat insulation of wall materials. The heat insulation of wall materials decreased with the increasing temperature. Sensitivity of the red block to water contents is larger...
Since the Kyoto Protocol signed in December 1997, the majority of governments around the world have committed themselves to reducing the emission of the greenhouse gases. Thus, efficient use of energy and sustainability has become a key issue for the most energy policies. It is known that cooling energy demand of a building can play an important part in building total energy consumption. In addition,...
In order to research energy-saving transform of public building, six the large and medium-scale emporiums in Handan were selected as object. On the basis of investigation into typical department emporium, set an elementary model of emporium building, made out the four different transform program to improve heat preservation of exterior wall, such as used double-layer window and added heat insulation...
New energy-saving composite wall structure is a kind of new residential building structure system characterized by waste utilization, saving energy, environmental protection and good aseismic performance, which is mainly constructed with pre-cast multi-ribbed composite slabs, concealed frame and floor by means of assembling and casting. Based on the previous test of the wall, heat transfer and thermal-insulating...
In this article, the heat model with solar panel composite wall structure was set up. simulation on heat resistance of solar composite wall was carried out, associated with three air flow patterns which refer to stillness, natural convection and forced convection, and compared with common wall without solar panel. It was found that the conditioning load was decreased remarkably due to the wall's reducing...
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