Energy-saving Design Strategy Research Articles

Green Building Performance Analysis and Energy-Saving Design Strategies in Dalian, China

Green Building Performance Analysis and Energy-Saving Design Strategies in Dalian, China

Passive energy-saving design strategy and realization on high window-wall ratio buildings in subtropical regions

Indoor overheating in high window-wall ratio (WWR) buildings has drawn widespread attention, but there is limited research on it during winter. Similarly, the application of radiative cooling (RC) technology on high-WWR facades and the effectiveness of combining RC with phase change materials (PCMs) need exploration. In Guangzhou, typical rooms in commercial buildings were studied, revealing that high-WWR buildings experience greater indoor overheating in winter compared to summer. For a 100 % WWR, the total equivalent energy consumption (EEC) is 71.389 kWh·m−2 in winters, 7.8 % higher than summer. Using RC glass with high solar (diffuse) reflectivity (0.65) on south-facing windows reduced EEC by over 70 %. RC glass also provided significant cooling capacity during unoccupied periods, which is sufficient to meet daytime cooling needs. In the case of a 100 % WWR, the proportion of available cooling capacity (37.5 %) during unoccupied period exceeded daytime cooling EEC (24.9 %). Therefore, PCMs were adopted to store this cooling capacity and transfer it for release during the occupied period, which bring an additional improvement in energy-saving performance by 4.7 %. The combination of PCMs and RC technology further achieves building energy efficiency. This study offers insights for addressing winter indoor overheating in high-WWR buildings.

Energy-Saving Design Strategies in Electrical Engineering Automation Systems: Towards an Environmentally Friendly Society

With the advancement of science and technology in China, electrical engineering has seen significant development, encompassing areas such as photonics and electronics. Currently, there is a societal focus on the automation systems within electrical engineering, with a particular emphasis on researching energy-saving designs to foster an environmentally friendly society. This paper analyzes the structure of electrical engineering automation systems, the characteristics of these systems, and the principles followed in energy-saving designs within electrical engineering automation. It explores the application strategies for energy-saving design in these systems, aiming to improve efficiency and sustainability.

Problems of Building Energy Consumption in Rural Schools in Linzhi, Tibet

The energy-saving research of school buildings in villages and towns in the severe cold areas of Linzhi Township has not yet been widely carried out. The energy consumption of schools in villages and towns in the severe cold areas of Linzhi is generally high, and the heating energy consumption in winter accounts for a large proportion of the energy consumption of school buildings. With the promulgation and implementation of energy-saving design standards for public buildings in schools in large and medium-sized cities, energy-saving activities have been carried out. In the severe cold area of Linzhi, there are a large number of buildings in villages and towns, with primary schools in each village, secondary schools and central primary schools in each township. The total energy consumption of village and town school buildings accounts for the majority of the total energy consumption of village and town public buildings. From this, it can be seen that studying the characteristics of village and town school buildings in the severe cold area of Linzhi and researching energy-saving design strategies suitable for their own characteristics based on the characteristics of village and town school buildings in the severe cold area are of great significance for the promotion and application of clean energy in schools in the Linzhi area.

Research on Passive Design Strategies for Low-Carbon Substations in Different Climate Zones

In the energy-saving design of substations, the building envelope thermal parameters, window-to-wall ratio, and shape factor are three crucial influencing factors. They not only affect the building’s appearance but also have an important impact on the total building energy consumption. In this paper, we applied the energy consumption simulation software DeST-c to study the influence of the above three elements on the total energy consumption of the building in a representative city with different thermal zones. The optimal envelope thermal parameters, optimal window-to-wall ratio, and optimal shape factor were derived through combination with economic analysis. Finally, the sensitivity analysis of different elements was carried out to determine the suitable passive design solutions for substations in different climate zones. It was found that the thickness of roof insulation has the greatest influence on the energy consumption of substation buildings among all envelopes. The optimal window-to-wall ratios were 0.4, 0.4~0.5, 0.3, 0.3~0.4, and 0.5 for severe cold, cold, hot summer and cold winter, hot summer and warm winter, and mild regions, respectively; and the optimal shape factors were 0.29, 0.30, 0.23, 0.31, and 0.33, respectively. The conclusions of this study can provide architects with energy-saving design strategies and suggestions for substations in different climate zones, and provide references for building energy-saving designs and air conditioning and heating equipment selection.

Energy-Saving Design Strategies of Zero-Energy Solar Buildings—A Case Study of the Third Solar Decathlon China

Solar Decathlon is a multi-disciplinary international competition that integrates energy-saving design strategies to design, build and operate zero-energy solar houses. This study focused on the 15 entries in the third Solar Decathlon China. It summarized their energy-saving design strategies into strategies of architectural design, equipment management, energy acquisition and intelligent regulation, and extracted a total of 22 key design elements. Based on the scoring results of the competition, this study analyzed the application of different design strategies with qualitative analysis; through quantitative analysis, 22 design elements were associated with the score, and the impact of different strategies on the score was comprehensively analyzed. As revealed in the data, design concept, functional structure and application type of renewable energy are significantly correlated with and have a great impact on the score; in contrast, building area and thermal buffer space are not significantly correlated with the score. On the basis of data analysis, this study provides a quantitative decision basis for the energy-saving design strategy of zero-energy buildings, and establishes an empirical model for the design of zero-energy solar buildings in Zhangbei County, Zhangjiakou City. This paper is helpful for the design practice and application of subsequent studies on ZEBs.

Research on energy-saving design strategies of libraries in severe cold regions: Taking a university in Xinjiang as an example

Energy conservation, emission reduction, green and low-carbon, and environmental protection have become contemporary hot topics. Taking a green and sustainable development path is an important measure to realize a resource-saving and environment-friendly society. As a large-scale public building, the library wastes a lot of energy and resources due to the unreasonable planning, design, operation and management of the library. Therefore, the green energy-saving design of the library is of great significance to the times. This article adopts a combination of theory and practice analysis method, through systematic combining and summarization of related documents, thinking about library buildings, and combining local special climatic conditions, explores the energy-saving design strategy of libraries in severe cold areas, with a view to more The researchers and practitioners of the company provide references for the future energy-saving design and practical innovation of library buildings.

An effective energy saving design strategy to maximize the use of electricity

Electrical service design is an important aspect of modern building constructions. The purpose of this paper is to give a convenient and economical approach to electrical service design in order to save energy. This paper designed and analyzed the internal electrical services of a duplex that included the lighting, generator power source and inverter sizing design which has been absent in most designs. The design parameters were modeled to meet the economic standards; hence specific values were given to different equipment. The result of the whole analysis and design was depicted in an AutoCAD format and it is seen that the design resulted in lesser energy consumption as compared to previous research. Though internal electrical services design might be a tedious process, but with this approach the process was made less demanding and easy. The work described is of tutorial significance.

An effective energy saving design strategy to maximize the use of electricity

Electrical service design is an important aspect of modern building constructions. The purpose of this paper is to give a convenient and economical approach to electrical service design in order to save energy. This paper designed and analyzed the internal electrical services of a duplex that included the lighting, generator power source and inverter sizing design which has been absent in most designs. The design parameters were modeled to meet the economic standards; hence specific values were given to different equipment. The result of the whole analysis and design was depicted in an AutoCAD format and it is seen that the design resulted in lesser energy consumption as compared to previous research. Though internal electrical services design might be a tedious process, but with this approach the process was made less demanding and easy. The work described is of tutorial significance.

Energy Consumption and Thermal Comfort Analysis of Public Housing in Sao Paulo, Brazil

This research examines energy consumption of public housing in Sao Paulo, Brazil and how changes in the current design practice affect building’s energy consumption and comfort level. The hypothesis is that energy-efficient design concepts applied to the public housing design in Sao Paulo could significantly reduce energy consumption in buildings. Computer simulation is used to evaluate the current buildings’ energy performance and to simulate the performance of new energy-saving design strategies. The findings show that energy consumption can be reduced by as much as 54% by implementing the new design strategies. This study highlights the many opportunities for architects to change the public housing scenario in Sao Paulo. It showed that changes carefully applied to the current design process can significantly enhance building’s energy performance and comfort level inside the envelope.

Research on Energy Saving Design Strategy of New Traditional Residence in Jinzhong, China

The research of traditional residence in Jinzhong,Shanxi shows that there are many disadvantages in ecology and energy saving, which seriously hinders the sustainable development of the new rural construction. Aiming at the existing problems, analysis is conducted by combining with the regional climate, economic and natural energy conditions,suggestions of energy-saving design of improvement is proposed in the paper, which provides guidance for energy-saving design of local new rural construction.

A DFuzzy-DAHP Decision-Making Model for Evaluating Energy-Saving Design Strategies for Residential Buildings

The construction industry is a high-pollution and high-energy-consumption industry. Energy-saving designs for residential buildings not only reduce the energy consumed during construction, but also reduce long-term energy consumption in completed residential buildings. Because building design affects investment costs, designs are often influenced by investors’ decisions. A set of appropriate decision-support tools for residential buildings are required to examine how building design influences corporations externally and internally. From the perspective of energy savings and environmental protection, we combined three methods to develop a unique model for evaluating the energy-saving design of residential buildings. Among these methods, the Delphi group decision-making method provides a co-design feature, the analytical hierarchy process (AHP) includes multi-criteria decision-making techniques, and fuzzy logic theory can simplify complex internal and external factors into easy-to-understand numbers or ratios that facilitate decisions. The results of this study show that incorporating solar building materials, double-skin facades, and green roof designs can effectively provide high energy-saving building designs.

Electromechanical Components and its Energy Saving Design Strategy in PHEV Powertrain

This paper presents advanced Compact Hybrid Planetary Transmission Drive (CHPTD) as a solution for the plug-in hybrid electric vehicle (PHEV). Proper architecture and elements were designed to achieve the functions of PHEV. The parameters of powertrain were adjusted and optimized by simulation. Two basic control strategies were selected and analyzed to achieve minimum energy consumption and the proper operation range of battery state of charge (SOC). The very effective operation of the improved powertrain was proved by tests in different driving cycles regarding the traffic both in city and suburb area. The advantage of planetary transmission, which is power summing mechanical unit, was obtained by the proper design and the control of innovative high energy saving electromagnetic clutch-brake device based on classic dual-diaphragm spring system, which also permits to apply multi-speed additional automatic mechanical transmission.