Case Study on Prefabricated Sunspace-Addition Renovation for Existing High-Rise Residential Buildings and Its Energy Consumption Simulations

Abstract

A large number of existing high-rise residential buildings in China have problems such as high energy consumption and poor comfort. Renovating them is an important way for sustainable urban development. This article first introduces a European sunspace addition method for existing high-rise residences, and then sets up unit models of different depths for energy consumption simulation. Four cities of cold regions of China are selected and simulation comparison of original state, conventional renovation, sunspace addition and its variants are made. The size of the window, the presence or absence of external shading, and the presence or absence of internal curtains influence factors for the energy performance of the sunspace. In addition, the effects of changing depth of sunspace on winter heating energy consumption and summer cooling energy consumption, as well as the impact of different construction details on energy consumption were also studied. The article verifies the feasibility of the objective renovation mode in terms of energy consumption and summarizes the corresponding conclusions.