Analysis on the Influence of Building Envelope on Building Energy Efficiency in Severe Cold Area

doi:10.21152/1750-9548.16.1.53

Abstract

With the rapid development of the global economy, the world energy consumption is increasing day by day. Mankind is facing the problem of energy shortage. Energy conservation and emission reduction has become the focus of countries all over the world. In order to study the influence of building envelope on building energy efficiency in severe cold area, the sensitivity analysis is used to analyze the influence relationship between building envelope and building energy efficiency. Combined with DeST simulation software, the building model is established, and the arc mean elasticity method is used to analyze the sensitivity of building energy load to different building envelope parameters. The results show that the external windows of the building envelope have the greatest impact on the building energy efficiency, followed by the external walls, and the roof has the least impact on the energy efficiency. The sensitivity coefficients of the annual cumulative load to the external windows, exterior walls and roofs of buildings are 7.93%, 5.76% and 5.75% respectively. Studying the influence of enclosure structure on building energy efficiency in severe cold areas has important practical value for reducing building energy consumption in severe cold areas, and provides data reference for scientifically improving building energy efficiency and building skill transformation in severe cold areas.

Highlights

With the increasing material demand of people and the rapid development of social economy, the problem of energy consumption gradually appears
Combined with the building cooling and heating load information obtained from the DeST modeling analysis, the influence relationship between the building energy load and the envelope parameters is understood through the parameter sensitivity analysis
In order to analyze the influence of building envelope on energy efficiency in severe cold areas, the sensitivity analysis is used to analyze the influence relationship between envelope parameters and building energy efficiency

Summary

INTRODUCTION

With the increasing material demand of people and the rapid development of social economy, the problem of energy consumption gradually appears. Affected by the environmental conditions, buildings in severe cold areas have high requirements for building thermal insulation performance. Analysis on the Influence of Building Envelope on Building Energy Efficiency in Severe Cold Area. In the severe cold environment in winter, buildings have large energy consumption in regulating indoor temperature, which does not meet the overall requirements of green and low-carbon development in China [5, 6]. Aiming at the problems of large building energy consumption and poor thermal performance of building envelope in severe cold areas, this study explores the impact of envelope on building energy efficiency in severe cold areas, so as to provide data reference for building energy-saving transformation in severe cold areas

Energy Saving Technology Analysis and DeST Model Simulation of Enclosure Structure

Impact Analysis of Retaining Structure Based on Sensitivity Coefficient

ANALYSIS OF PARAMETER SENSITIVITY RESULTS

Findings

CONCLUSION