Open AccessThe impact of internal gains on thermal stratification for public buildings
Author(s) -
Nisrine Laghmich,
Zaid Romani,
Remon Lapisa,
Abdeslam Draoui
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/609/4/042090
Subject(s) - trnsys , thermal stratification , stratification (seeds) , environmental science , thermal , thermal comfort , mediterranean climate , meteorology , temperate climate , marine engineering , atmospheric sciences , geology , engineering , geography , turbulence , seed dormancy , botany , germination , archaeology , dormancy , biology
The indoor temperature in public buildings varies according to its internal loads scenario. In fact, this building typology in temperate climates is generally non-air conditioned and naturally ventilated. In order to improve indoor thermal conditions with appropriate solutions, it is necessary to study the vertical temperature profile. The main objective of this study is to show the impact of thermal stratification on thermal comfort of public buildings. The thermo-airodynamic modeling using TRNSYS (C) and CONTAM (C) have been performed in this numerical simulation study. The indoor air volume is vertically subdivided into several levels to evaluate the evolution of temperature profile taking into account the different inside-outside air exchange and air coupling between sub-zones. This study is performed in the city of Morocco that represents Mediterranean climate region with a moderate temperature. The effect of several parameters, such as indoor occupation pattern, internal lighting, sub-zones air exchange and vertical thermal stratification are studied. Numerical simulation results show that thermal stratification of buildings affects the occupant’s comfort level