Applied Mechanics and Materials Vols. 368-370

Abstract: A calculation model to optimize aspect ratios of a large scale solar collector array installed on the limited horizontal roofs has been developed. The relations between the average daily solar radiation collection on the collector array and the aspect ratio have been studied. The results show that there is an optimum aspect ratio to maximize the solar energy collection on the collector arrays. The optimum aspect ratios of the collector array covering a floor area of 1000 m², 500 m², 200 m² and 100 m² for Beijing are 10/1, 5/1, 5/1 and 3/1, respectively. For the sake of convenient applications, the optimum aspect ratios of five types of collector arrays with different floor area used in 13 cities in China are given.

Abstract: The features of green building can increase energy efficiency, enhance the efficiency of resource and material, maintain diversity of species, reduce emission of pollutant, and reduce environmental loading advantages. Although the intention of green building is good, but to be in full compliance with indicator developed today, and goes through inspection before receiving the mark to qualify for green building range limit; This study, therefore, can have significant energy-saving effect in the case of the same original design by changing only building material and color. Practice can take advantage quickly and easily of simple change to achieve a more sustainable, healthy and safe living quality. This study, furthermore, hopes to create economic value and promote sustainable development goals. Finally, this study further allows to enhance Taiwan have sustainable qualities of architectural attention.

Abstract: This study introduced the basic situation of the parabolic trough concentrating solar cogeneration system, and set a one-dimensional steady-state mathematical heat transfer model based on the experimental devices, at the same time clarified influencing factors of the major heat transfer process and thermal performance of the system. The article did perspectives theoretical analysis and simulation for the system in different aspects, through using of solar trough concentrator reflecting device, established thermal performance experiments that water as the working fluid flow, provided theoretical and experimental basis for the thermal performance optimization of the system.

Abstract: The energy consumption of residential buildings and its potential influence factors in Inner Mongolia were investigated by questionnaires.The main factors influencing energy consumption of the residential buildings were screened by the partial corresponding analysis.The partial correlation analysis indicates that the total energy consumption of the residential buildings and the energy consumption per unit floor area are closely related to annual household income, air conditioning opened situations and building orientation. While they are not significantly related to construction area, building type, building ages, household resident population, heating modes, appliances quantity, appliances opened situations, hot water supply modes, According to these influencing factors, the article put forward some energy optimization measures.

Abstract: In this paper, solar photovoltaic system utilized in building sectors in China is assessed. For photovoltaic, the main reason causes low utilized is high capital cost. Another problem for photovoltaic is that solar cell has low efficiency when utilized in practical. In this study, some works have done to assess PV utilized in building sectors in China from the technology and economic aspects.

Abstract: Nowadays, universities are taking responsibility for their environmental impact and are working to ensure environmental sustainability. In this research, we aim to analyze energy system of a model university campus in southern China and grasp the energy consumption of the whole campus from the viewpoint of reducing GHG emission. We investigated and analyzed the present situation of energy system by using measured data and inquiry survey. In order to grasp the data exactly, we introduced building energy management system (BEMS) to some typical buildings with electricity consumption controlling. Then examination of energy consumption intensity according the different typical buildings has been analyzed on the basis of the research at campus. The campus's energy consumption prediction was carried out during the 24-h field measurements period. Furthermore, energy consumption intensity of the whole campus were predicted.

Abstract: A solar radiation model to determine solar energy collection on solar collector array with different aspect ratios has been developed. The relations between the aspect ratio and the average daily solar radiation collection on the collector array have been deeply studied. The results show that there is an optimum aspect ratio to maximize the solar energy collection on the collector arrays. The optimum aspect ratios of the 1000 m² collector array for Haikou, Kunming, Lhasa and Beijing are 10/1, 1/3, 5/1 and 10/1.The optimum aspect ratios of 1000 m², 500 m², 200 m² and 100 m² collector arrays for Kunming are 1/3, 3/1, 7/1 and 1/5, respectively.

Abstract: Ground-Source Heat Pump systems and tower cooling system have been studied in this paper individually by experiment and simulation using TRNSYS, the influencing factors such as meteorological parameter, cooling tower and subunit construction was analyzed. Results show that the combined system has ability to meet the cooling requirements in II building climate zones, the combined system will have energy-saving and obvious economic benefits by working through the year.

Abstract: Based on analysis of the application status of the virtual reality technology and energy simulation technology in energy-efficient building, authors put organic combination with the virtual reality technology and energy simulation technology. Application methods of virtual simulation are discussed in integrated design of solar energy and building. And the evaluation process of solar energy and building integrated design is put forward. At the same time, according to the software of 3D Studio MAX and ECOTECT, the paper studies the case of solar energy and building integrated design virtual simulation.

Abstract: Greenhouse gas emissions and energy controls of industrial activities have become a main focus of the Taiwanese government, and because the cost of electricity is rising rapidly nowadays, adopting energy conservation measures to achieve cost savings and sustainable operation is essential for industries. In the textile industry, the energy consumption of A/C systems is second only to that of the manufacturing equipment. This study presents the life cycle costs and payback period by replacing old A/C systems with evaporative cooling systems. Based on the analysis, this study concludes that with evaporative cooling systems using only 10% to 15% of the energy used by A/C systems, the average payback period is less than 0.25 years despite the low electricity tariff in Taiwan. This suggests that for either the short term or the long term, evaporative cooling systems are an economical measure for the textile industry.