Conference Agenda

Abstract: In Taiwan, the average of convenient store's Energy Use Intensity (EUI) is high at a 1501 (kWh/m2/year) which is 3 times higher than department stores, 7times higher than central air conditioning office buildings and 38times higher than housing due to operational hours, internal loads and a poorly designed building envelope. Unexpectedly, communities use convenience stores as thermal comfort refuges during summer. This study utilised a dataset of 251 convenience stores in Taiwan from the largest leading retailer to obtain data on the physical, construction elements, energy use and siting of convenience stores. Sample analysis results analysed the architectural features and main locations, urban setting of the convenience store for a base case design. The dynamic software IES-VE (2016) is used to simulate different envelope improvement techniques to understand cooling demand and indoor thermal performance in relation to an urban setting. The dataset energy loads were used to validate the simulation results. The simulation results show that the most efficient building envelope improvement type is an insulation roof with shading. It saves 17% of cooling load in arterial roads while saving up to 18% of cooling load in residential areas.

Energy Performances Certificates have been implemented in Spain just in the moment of the largest real estate recession, such situation does not allow to observe consumers’ preferences on energy efficient homes. This paper uses choice experiment to study the relative importance of energy efficiency in relation to other functional and quality attributes. In order to evaluate the role of framework information in the formation of household preferences the sample has been split into 2 sets and informed on the economic and environmental implications of energy efficiency using technical and illustrative units. Results suggest that households do give importance to energy efficiency mainly when they are informed in an easy-to understand way. This latter finding has important implications for the design of energy policy.

Currently, office buildings are designed with a high window to wall ratio (WWR), without external solar protection systems (CPS), causing visual and thermal discomfort and high building’s energy consumption. Complex fenestration systems (CFS), which include an external CPS, allow the mitigation of these problems. During the design process of a building, it is very important to predict the thermal and visual behavior of the façade systems. There are many validated tools to support the buildings design process that allows evaluating their thermal and lighting performance. Most of these tools require expert knowledge in thermal and visual evaluation methods of buildings. On the other hand, the energy performance of a building highly depends highly on early façade´s design decisions. The objective of this paper is to show a new tool to support the design process of office buildings in Chile. This tool allows the simultaneous analysis of the total energy consumption (heating, cooling, and lighting) and the visual comfort conditions in the space of a building. This tool is that it is easy to use and allows reliable simulations in a very short time, which makes it useful and practical for the early stages of the office building design process.

This paper presents a brief analysis of the substitution of the main materials traditionally used in civil construction by less energy-intensive materials, their contribution to Energy Efficiency - EE and to the reduction of GHG emissions. For the analysis, the calculation method developed by Cruz (2018) was used considering three ecoindicators: energy - (kWh/m2), environmental - (tCO2/m2), and socioeconomic - relation between minimum wage and construction cost. The study does not intend to present the life cycle analysis of the construction industry or materials, considering that its focus is to perform an objective analysis through a direct method of evaluating the substantialenergy of the materials and their equivalent GHG emissions. The final results present a epresentative case in the construction of Brazilian cities: Minha Casa Minha Vida Program, selected by the strong Brazilian housing demand, scope and volume of public investment.