Statistical Methodology for the Definition of Standard Model for Energy Analysis of Residential Buildings in Korea

Abstract

This study was conducted to propose an optimal methodology for deriving a standard model from existing residential buildings. To strategically improve existing residential buildings, it is necessary to identify standard models that can be used as quantitative standards. In this study, a total of six methods were established for different algorithms in the dimensionality reduction and clustering stage of the data preprocessing stage. In addition, a total of 22,342 households’ data were analyzed, and a total of 26 variables were used to perform cluster analysis. The process of method 6 (data pre-processing, principal components analysis, clustering [K-medoids], verification) was proposed as a way to derive the standard model from the existing Korean housing. The method proposed in this study is capable of deriving a number of standard models considering all variables (n) in a single analysis. The representative building derived in this study contains a lot of building data, so it can be effectively used for planning and research related to buildings on a regional and national scale. In addition, this process can be applied to various buildings to derive representative buildings.

An Analysis of Thermal Comfort Models: Which One Is Suitable Model to Assess Thermal Reality in Brazil?

“…Next, through cluster analysis, it was possible to divide the data of thermal sensations obtained by the models into k clusters, where everyone was assigned a group [64], i.e., each person should be assigned to only one cluster according to their thermal sensation, so all those who have thermal similarities will be in the same group. Nam et al [65] cited that if, by chance, an object belongs to a cluster, it becomes impossible to transfer it to another; thus, if there are outliers, they cannot be removed, as was the case of the outlier found in cluster 1 of Maceió that contained well-dispersed thermal sensations that benefited for the variable 'AdapPMV' to present a higher thermal sensation than the one present in the 7-point scale of ASHRAE.…”

Urban Regional Building Energy Planning Model under the Guidance of Network Flow Theory

“…Assuming that the network includes only one sink and source, the network can be regarded as a single-source single-sink network, which can be expressed as Equation (3).…”

“…Currently, when considering district building plans, the selection and evaluation process is often based solely on human judgment, and specific strategies are not well correlated with the goal of controlling district energy. District energy planning is based on new and existing buildings in the region, and mainly considers the energy use of heating, cooling and hot water in the process of building operation, as well as the use of building electricity and electrical equipment [1][2][3][4]. The planning model also includes the production, transportation and other aspects of energy use.…”