Thermal Performance Simulation of an Atrium Building

2020

Glass covered or glazed atriums are becoming increasingly popular in public spaces for their aesthetics, quick installation and building energy reduction by taking advantage of natural daylight and heating by greenhouse effect. The estimation of the building load of atrium buildings is complicated due to the various thermal phenomena involved. The study aims to estimate the cooling loads or heat gain of glazed atriums, using computational fluid dynamics (CFD) modelling using an actual semi-open pedestrian walkway between two building blocks. Steady Reynolds Averaged Navier Stokes modelling approach with the RNG Kepsilon turbulence model, and the Discrete Ordinates (DO) Radiation models were used in the simulation. The temperature and air flow patterns predicted by the CFD simulations are discussed in this paper under various weather conditions. Results predict temperature gains inside the atrium, identify hot and cold spots and predict thermal comfort.

2000

Design of a thermally comfortable indoor environment requires detailed information about distribution of air velocity, air temperature, relative humidity, and mean radiant temperature and about heating/cooling load in a space. This research has developed a coupled airflow-and-energy simulation program to calculate simultaneously the distributions of indoor airflow and thermal comfort and heating/cooling load. The coupled program can take the nonuniform distributions of indoor airflow and heating/cooling load into account. The program can also provide thermal and fluid boundary conditions normally needed for room airflow calculation. This paper demonstrates the program capacity by applying the program to study the thermal environment in a house and an atrium. The coupled flow-and-energy program is recommended for the design of radiative, convective, and hybrid heating and cooling systems.

Energy and Buildings, 2017

This paper analyses annual energy performance of atrium type hotel building in Belgrade. The objective is to examine the impact of the atrium on the hotel building’s energy demands for space heating and cooling. Integrated approach through numerical simulations that include Belgrade climate data and thermal comfort parameters, indicates an optimal model of hotel building with atrium for this area. Building energy simulation is carried out using EnergyPlus simulation engine, as a basic tool in the process of building energy optimization. The methodological approach includes the creation of a hypothetical model of an atrium type hotel building, numerical simulation of energy performances of several design alternatives of the hotel building with atrium, and comparative analysis of the obtained results. The main task of analysis is to change certain parameters in the particular model (for example, building structure, orientation, etc.) and to observe how the changes influence energy per...

2010

Thermal and visual comfort in buildings play a significant role on occupants' performance but on the other hand achieving energy savings and high comfort levels can be a quite difficult task especially in high rise buildings with highly glazed façades. Many studies suggest that the energy needed to keep the interior conditions at required comfort levels in buildings depends on several factors such as physical and optical properties of building elements, indoor and outdoor climate and behaviour of the occupants, etc. Moreover depending on the different orientation of building facade, the impact of these parameters might vary. The buildings are usually designed without paying much attention to this fact. The needs of each building zone might differ greatly and in order to achieve better indoor environment, different actions might be needed to taken considering the individual characteristics of each zone. In the proposed research the possibilities of evaluating building energy and comfort performance simultaneously taking into account the impact of facade orientation with use of whole building energy simulation tools are investigated through a case study.

III Jornadas sobre Innovación Docente en Arquitectura (JIDA), Escuela Técnica Superior de Arquitectura de Barcelona, del 25 al 29 de Mayo de 2015

The convenience of the use of environmental building evaluation tools, to know design conditions and thermal behavior, by using bioclimatic strategies for determining a good early design processes of the building, as well as an evaluation of energy consumption of buildings and for the behavior of building the use of BPS - building performance simulation tool to control the power state of the building, the emission of carbon dioxide CO2, natural lighting and thermal comfort and a CFD - Computational Fluids Dynamics analysis. We take a deeper look about the behavior of the buildings by the use of the Design Builder software, as main practice objective, to show this we explain the process to work with a BPS - building performance simulation: Pre-process, Simulation process, Post-process. This material was presented in a European Union Cost Action TU1104, Training School in Belgrade (Serbia) in 20 - 23 April of 2015.

Sustainability, 2019

This paper aims to determine the optimal single-story office building model with a corner atrium regarding different atrium orientations and office-building window-opening ratios in the Mediterranean climate via EDSL Tas software. When window-opening ratios were 25% and 50% at the northeast and southeast orientations of atriums and office spaces, thermal comfort was achieved according to categories B and C, respectively, within the cold season. Additionally, for the northeast atrium orientation with 25%, 137.2 W and 189.5 W of heat loss and gain in the office zone, and 37.7 W and 204.7 W of heat loss and gain in the atrium zone were recorded. Moreover, for the northeast atrium orientation with 50%, 134.5 W and 134.2 W of heat loss and gain in the office zone, and 40 W and 192 W of heat loss and gain in the atrium zone were recorded. On the other hand, for the southeast atrium orientation with 25%, 108.7 W and 143 W of heat loss and gain in the office zone, and 68.8 W and 130 W of heat loss and gain in the atrium zone were recorded, while, with 50%, 111.7 W and 142.7 W of heat loss and gain in the office zone, and 67.5 W and 121.2 W of heat loss and gain in the atrium zone were recorded. In the warm season, the atrium and office spaces were not thermally comfortable.

2015

This paper presents an investigation of the energy performance in an office building in Daejeon, Korea. The office building has a south-facing glazed double-envelope and a rectangular atrium. During the preliminary design of the building, a study was conducted by the research team in order to achieve the annual energy consumption per unit area of the building under 240 Mcal/m2-yr. A number of building designs and HVAC system variables were analyzed in terms of energy performance. Based on the results of the analysis, the important building design issues including HVAC system specifications were identified for the building. Finally, the energy performance of the building was evaluated by comparing with a typical office building.

JES. Journal of Engineering Sciences

This paper explores the implications of alternative design options for the thermal performance of office buildings in Cairo, Egypt. Typical courtyard office floor plan was selected for the investigation. Multiple design alternatives were considered involving various glazing and shading types, shading schedules, thermal insulation options, orientations, and ventilation scenarios. A numeric thermal simulation application was used to model the performance of these alternatives parametrically*1. The results show the significant degree to which design measures could reduce cooling requirements of (and overheating tendencies in) courtyard office buildings in Cairo.

Energy and Buildings, 2018

études et d'expertise sur les risques, l'environnement, la mobilité et l'aménagement

Environmental Science: an Indian journal, 2010

The Thermal Building Simulation is a very suitable way for optimizing the thermal performance of buildings. In this paper the thermal behavior of a public building including the heat demand, heat loads as well as the indoor temperatures during summer is simulated using the TRNSYS (Transient System Simulation Program) programpackage. For the start of the thermal building simulation, input parameters concerning the climate data, the building geometry and the use of the building were defined. The influence of the movable shading devices, night ventilation, roof insulation and internal gains were investigated. The results of the simulation showed the possible procedures to arrive at an optimized situation of the building: no window shading devices, shading devices only on the south facade, night ventilation with an air change rate of 6.0[h-1], Roof insulation of 5[cm] and reduction of the electrical power consumption of the PCs to 80[W/PC]. This study will be used as a starting point fo...