Effect of technical solutions on non-heating and non-cooling temperatures and free cooling potential in office buildings

摘要

In this paper we analyze by means of building simulation the effect of different parameter combinations on the non-heating and non-cooling temperatures of a typical air-conditioned office building. The examined parameters are: thermal insulation, thermal inertia, ratio of glazed surfaces, type of windows and shading devices, envelope permeability, ventilation type, installed appliances and lighting power, heating and cooling set point temperatures..The paper suggests the constructive solutions that lead to concept buildings with three distinct seasons: a heating season, two mid seasons without the need for heating or cooling, a cooling season. Moreover, we analyse the possibility to use free cooling during the heating and the mid seasons to avoid overheating.This study is an introduction to the definition of a new concept of air-conditioned buildings, with optimized envelope and HVAC systems, called CLIMHYBU (Hybrid air-conditioning of office buildings).