Energy reduction in developing countries

Due to the rapid growth of the Chinese economy, increased efficiency of energy use has become an important element of a strategy to achieve sustainable development in the country. According to the Energy Information Administration EIA, within the next few decades, China will be the world's largest producer of CO2 and in the future, buildings will consume up to one-third of the total energy. The aim of this paper is to study possible reductions of energy consumption in residential dwellings in China. The computer simulations in this paper have been done by Simulink, which is based on Matlab. To compare the result, a new methodology based on dynamic thermal networks, developed at the department of Building Physic in Chalmers University of Technology, Gothenburg has been used but not presented in this paper. To calculate the time-dependent variation of the heat loss through the construction, the outer temperatures are weighed with certain weight factors. By studying the weight factors, a clear picture over the dynamic heat flow is obtained. The dynamic heat loss of a wall is the sum of absorptive and transmittive heat flux [1].