Papers by Keyword: Thermal Performance Evaluation

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Authors: Silvia Baďurová, Jozef Jošt, Frantisek Bahleda, Juraj Ďuďák
Abstract: The trend in the new construction or renovation of buildings is based on reducing the energy demand of buildings. The required energy need for heating and provision of a satisfactory condition of the internal environment is determined by theoretical calculations. However, the fact that a building is energy efficient does not yet mean it is environmentally appropriate as well. Therefore, the environmental impact of building materials should also be assessed in their selection.The problem with restoring old buildings is to find the correct way how to restore the building while preserving its historical value. The paper presents an example of the reconstruction of the school building built in the year 1906. Reconstruction of the old building is a unique example of recovery. The modern and traditional techniques were used in the reconstruction. This is the first building in Slovakia, where is the front facade insulated with ecological materials (sheep wool, cork, cellulose, etc.) from the interior side and also utilization of alternative energy sources. Other parts of facade are insulated from the outside, with straw bales and wood fiber boards. Largely it has been preserving the original character of the building.Different types of wall structures are compared in theoretical evaluations. The criteria for the evaluation are the thermal resistance of construction (according to EU standards and norms), the weight of the wall and the environmental impact (according to OI3 methodology).
Authors: Hong Guo Ren, Gui Wen Li, Xiu Mu Fang
Abstract: In order to satisfy the requirement of villages indoor thermal amenity in winter in cold district in north of china, thermal performance of level, vertical flue smoke organization form hot wall have been tested. The experiment use Testo flue gas analyzer, BES-C portable computer multi-channel data acquisition instrument, the infrared thermography and so on to acquire basic data of two type flue layouts hot wall. These parameters include smoke composition, the inport and export smoke temperature, smoke quantity, metope temperature of hot wall and so on. And then record the test data, calculate evaluation index of the thermal performance, which are metope temperature standard deviation, thermal inertia and heat efficiency, etc. According to the value of the heat efficiency, we can judge the thermal performance of two kind of hot walls. The test results shows that the heat efficiency of level flue smoke organization form is 68.9%, and the heat efficiency of vertical flue smoke organization form is 62.1%. The heat efficiency of hot wall in the form of level flue is higher, better meet the requirement of heating facilities in energy saving, residents thermal amenity.
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