scholarly journals Indoor Climate Simulation in a Church During Winter Season

2019 ◽  
Vol 9 (1) ◽  
pp. 25-28
Author(s):  
Ana Diana Ancas ◽  
Florin-Emilian Turcanu ◽  
Mihai Profire ◽  
Marina Verdes ◽  
Marius Costel Balan
Keyword(s):  
Thermal Comfort ◽  
Winter Season ◽  
Heating System ◽  
Simulation Software ◽  
Climate Simulation ◽  
Design Stage ◽  
Indoor Climate ◽  
Cfd Modelling ◽  
Software Environment ◽  
Made In

Abstract In the paper is presented a heating system installed in church and the interior climate generated. Thermal Comfort is the purpose of each designer, since the design stage and has to be ensure for the churchgoers, but even for the interior finishes. The heating system that uses hydronic radiators is evaluated trough the CFD modelling, in order to evaluate pro and contra arguments. The simulation has been made in a 3d simulation software environment, in Autodesk CFD with good results.

Evaluation of Indoor Climate in Small University Lecture Hall

2016 ◽  
Vol 861 ◽  
pp. 369-375
Author(s):  
Mária Budiaková
Keyword(s):  
Thermal Comfort ◽  
Architectural Design ◽  
Winter Season ◽  
Lecture Hall ◽  
Experimental Measurements ◽  
Optimal Parameters ◽  
Indoor Climate ◽  
Air Velocity ◽  
Globe Temperature ◽  
The University

This paper is focuses on the evaluation of the indoor climate in the small university lecture hall. Providing the optimal parameters of thermal comfort in the interiors of a university is immensely important for the students of the university. Fulfilling these parameters is inevitable not only for the physiological needs of students but also for the required performance of students. Reconstruction took place in the small university lecture hall. The original windows were exchanged for the modern wood tight windows. Experimental measurements were carried out in the winter season in 2016 in this small university lecture hall in order to evaluate the thermal comfort after the reconstruction. The device Testo 480 was used for the measurements. Obtained values of air temperature, air relative humidity, air velocity, globe temperature and indexes PMV, PPD are presented in the graphs. Heating, operation and architectural design of the small university lecture hall were evaluated on the basis of the parameters of thermal comfort. In the conclusion of this paper, there are principles how to design new small university lecture halls. Furthermore, there are presented recommendations how to operate the existing small university lecture halls.

Evaluation of Indoor Climate in Big Lecture Hall

2019 ◽  
Vol 887 ◽  
pp. 475-483
Author(s):  
Mária Budiaková
Keyword(s):  
Thermal Comfort ◽  
Ventilation System ◽  
Winter Season ◽  
Point Of View ◽  
Lecture Hall ◽  
Experimental Measurements ◽  
Optimal Parameters ◽  
Indoor Climate ◽  
Air Velocity ◽  
Operation System

The paper is oriented on the evaluation of the indoor climate in the big lecture hall. Providing the optimal parameters of the thermal comfort and the CO2 concentration is immensely important for the students in the interiors of a university. Meeting these parameters is inevitable not only from physiological point of view but also for achieving the desirable students' performance. The high CO2 concentration is related to incorrect and insufficient ventilation in the lecture hall and causes distractibility and feeling of tiredness of students. Experimental measurements were carried out in the winter season in 2016 in the big lecture hall in order to evaluate the thermal comfort and the CO2 concentration. The device Testo 480 was used for the measurements. Obtained values of air temperature, air relative humidity, air velocity, CO2 concentration are presented in the charts. Mechanical ventilation system and operation system of the big university lecture hall were evaluated on the basis of the parameters of the thermal comfort and on the basis of the CO2 concentration. Based on the findings, design recommendations for new big university lecture halls are derived. Furthermore, there are presented recommendations how to operate the existing big university lecture halls.

A FLUIDODINÂMICA COMPUTACIONAL UTILIZADA PARA MAPEAR O CONFORTO TÉRMICO DE SUÍNOS NA FASE DE MATERNIDADE

2017 ◽  
Vol 32 (1) ◽  
pp. 32
Author(s):  
Beatriz Kenickel Nunes ◽  
Silvia Regina Lucas de Souza ◽  
Arilson José de Oliveira Júnior ◽  
Enedy Allan Rodrigues Cordeiro ◽  
Reginaldo Apolinário de Almeida
Keyword(s):  
Thermal Comfort ◽  
Computational Fluid Dynamic ◽  
Cfd Simulation ◽  
Fluid Dynamic ◽  
Thermal Conditions ◽  
Simulation Software ◽  
Santa Cruz ◽  
Facilities Design ◽  
Comfort Condition ◽  
Made In

As observações geradas em estudos sobre instalações de suínos têm demonstrado que o desempenho térmico das instalações comumente utilizadas pelos produtores vem apresentando um quadro de desconforto térmico na fase da maternidade, devido às adaptações construtivas feitas com a finalidade de atender tanto as necessidades da matriz quanto dos leitões. Sendo assim, o objetivo deste trabalho foi utilizar a ferramenta de fluidodinâmica computacional (CFD) para realizar o mapeamento do microambiente de duas instalações de suínos, visando o bem-estar dos animais. As simulações foram obtidas em uma maternidade da Fazenda Experimental Lageado, UNESP, Botucatu/SP e de uma granja comercial localizada em Santa Cruz do Rio Pardo/SP. Para as simulações utilizou-se o software Autodesk® CFD Simulation juntamente com o AutoCAD 3D, para desenho das instalações. As condições de conforto térmico foram analisadas por meio da aplicação do índice de voto médio estimado – PMV. Na instalação comercial simulada observou-se que as aberturas laterais não são suficientes para manter uma condição de conforto térmico, segundo o índice PMV. Com o uso da fluidodinâmica computacional foi possível modificar o ambiente mediante a elevação do seu fluxo de ar, o que demonstrou ser uma solução na diminuição da temperatura do ar e alcance de uma condição de conforto térmico.PALAVRAS-CHAVE: Conforto térmico, bem-estar de suínos, fluidodinâmica computacional, CFD, simuladores. FLUIDODYNAMICS COMPUTATIONAL USED FOR THE MAPPING OF THERMAL CONDITIONS IN INSTALLATION OF SWINE MATERNITIESABSTRACT: Studies have shown that the thermal performance of facilities commonly used by producers has presented an environmental discomfort picture in the maternity phase due to constructive adjustments made in order to meet needs of both piglets and sow. Therefore, this work aimed to use the computational fluid dynamic tool for mapping the microclimate of two facilities, which purpose of improving the animal welfare. The simulations were conducted at experimental farm “Lageado”, UNESP, Botucatu/SP and a commercial facility, located in Santa Cruz do Rio Pardo/SP. For simulations were used the Autodesk® CFD Simulation software along with AutoCAD 3D (facilities design). Thermal comfort conditions were analyzed by means of predicted mean vote – PMV. In simulated commercial facility was observed that side vents are not sufficient to establish a thermal comfort condition, according to PMV. With computational fluid dynamic was possible to change the environment through air flow increase, showing to be a solution in decrease of air temperature and reach of thermal comfort condition.KEYWORDS: Thermal comfort, swine welfare, computational fluid dynamic, CFD, simulators.

Shading devices applied to sun control in occupied spaces in summer conditions

2021 ◽  
pp. 127-139
Author(s):  
Eusébio Conceição ◽  
João Gomes ◽  
Maria Manuela Lúcio ◽  
Hazim Awbi
Keyword(s):  
Thermal Comfort ◽  
Dynamic Simulation ◽  
Ventilation System ◽  
Simulation Software ◽  
Comfort Level ◽  
Or Groups ◽  
Shading Devices ◽  
Heat Exchanges ◽  
Shading Device ◽  
Made In

This work presents a study of a numerical building dynamic simulation in the development of a horizontal shading device passive solution applied in a university canteen. The used building dynamic simulation software, that simulates simultaneously a building or groups of buildings with complex topologies, in transient conditions, considers the solar radiation, the HVAC system, glass radiative proprieties, radiative heat exchanges, thermal solutions, thermal comfort of occupants, indoor air quality, among others properties. The development of efficient external horizontal shading devices is made by a numerical model that uses the sun's trajectory and its position in relation to the windows where it falls. The canteen is constituted by three levels and is divided in 37 spaces. In the numerical simulation, 100 transparent surfaces and 773 opaque surfaces are considered. Special attention is given in the students’ main canteen, professors’ main canteen, specialized canteen and university bar. The simulation is made, in summer conditions, considered the selected spaces without and with horizontal shading devices placed above their windows. In the simulation, the occupancy and the implemented ventilation system are considered. Regarding to the obtained results the use of horizontal shading devices can reduce the air temperature range and improve the thermal comfort level that the occupants are subjected in some of the analyzed spaces.

scholarly journals Thermal comfort assessment for different heating system using CFD-modelling inside of an orthodox church

2019 ◽  
Vol 586 ◽  
pp. 012042
Author(s):  
V Ciocan ◽  
E F Țurcanu ◽  
M Verdeș ◽  
R S Luciu ◽  
M C Bălan ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Heating System ◽  
Orthodox Church ◽  
Cfd Modelling

scholarly journals Simulation and modelling of microclimate in a building with high thermal mass during the winter season

2019 ◽  
Vol 85 ◽  
pp. 01006
Author(s):  
Florin Emilian Ţurcanu ◽  
Marina Verdeş ◽  
Vasilică Ciocan ◽  
Andrei Burlacu ◽  
Marius Costel Bălan ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
System Performance ◽  
Winter Season ◽  
Heating System ◽  
Simulation Method ◽  
Thermal Mass ◽  
Indoor Climate ◽  
Simulation And Modelling ◽  
Historical Heritage

This paper presents the simulation method for evaluating the heating system from a church. The inside climate has been evaluated by measures of temperature and humidity taken in the winter season. The aim of the paper is to model and validate the indoor climate measures thought numerical analysis and to evaluate the heating system performance. The paper include a case study over and representative category of buildings, used as worship place that can contain heritage values. Nowadays, to conserve the historical heritage is a fact studied in many countries of Europe.

Analysis of Thermal Comfort in Flat in New High Residential Building

2016 ◽  
Vol 861 ◽  
pp. 361-368
Author(s):  
Mária Budiaková
Keyword(s):  
Thermal Comfort ◽  
Architectural Design ◽  
Residential Buildings ◽  
Winter Season ◽  
Residential Building ◽  
Heating System ◽  
Residential Areas ◽  
Air Velocity ◽  
Globe Temperature ◽  
The Individual

This paper focuses on the analysis of thermal comfort in a flat in the new high residential building. Providing the optimal parameters of thermal comfort in each room of the flat is the basic prerequisite for the satisfaction with housing. Incorrect position and size of heating elements, incorrect positioning of the furniture and incorrect use of residential interiors may significantly disturb the thermal comfort. Residential areas in the new residential buildings are much more intensively used as in the other types of buildings. Surface of new flats is the most optimized. Experimental measurements were carried out in the winter season in 2016 in the residential rooms of the large flat in the new high residential building. Device Testo 480 with temperature and humidity sensor, globe thermometer and turbulence sensor was used for the measurements. Obtained values of air temperature, air relative humidity, air velocity, globe temperature and indexes PMV, PPD are presented in the graphs. Heating system of the flat and the possibility of its regulation, positioning and size of the heating elements in the individual rooms, positioning of the furniture and the utilization of rooms were evaluated on the basis of parameters of thermal comfort. In the conclusion of the paper, there are principles on the architectural design of the residential interiors and their heating in the new residential buildings.

An Analytical Method for Calculating Hydrostatics for Jacket Structures

2020 ◽  
Author(s):  
Irene Last ◽  
Stefan Krüger
Keyword(s):  
Computation Time ◽  
Offshore Structures ◽  
Simulation Software ◽  
Design Stage ◽  
Offshore Platforms ◽  
Software Environment ◽  
Early Design Stage ◽  
Steel Members ◽  
Jacket Structures ◽  
Simple Body

Abstract In response to the continuing importance of offshore structures a framework for the simulation of offshore platforms is implemented in the open software environment E4. The non-commercial suite contains various methods for the ship design so that the newly developed procedures benefit from the existing knowledge. Jacket structures are installed as fixed platforms or compliant towers and play a significant role in the offshore exploitation. They are made out of hundreds of tubular steel members and each of the cylinders or cones can be seen as a simple body compared to ships. Besides the dynamic behaviour and fatigue analysis, the examination of the installation procedure especially the launch operation is of high interest. This article presents an analytical approach for the hydrostatic calculations of partially submerged cylinders. Hydrostatic forces on jacket structures are calculated by superimposing single cylinders and the results of the newly developed method are compared with a commercial simulation software. The aim is to speed up the computation time in comparison to numerical methods which is a significant advantage in the early design stage. The presented method will be the foundation for the simulation of jacket launching manoeuvres in time domain.

scholarly journals Numerical analysis of the thermal comfort in a church building

2019 ◽  
Vol 85 ◽  
pp. 02008
Author(s):  
Florin Emilian Ţurcanu ◽  
Marina Verdeş ◽  
Vasilică Ciocan ◽  
Andrei Burlacu ◽  
Răzvan Silviu Luciu ◽  
...  
Keyword(s):  
Experimental Data ◽  
Numerical Analysis ◽  
Thermal Comfort ◽  
Simulation Model ◽  
Winter Season ◽  
Heating System ◽  
Velocity Profiles ◽  
Air Velocity ◽  
Comfort Evaluation ◽  
Church Building

Based on the monitoring campaigns, we have evaluated the indoor microclimate in a church. Most church buildings are characterised by low thermal comfort due primarily to their architecture, heating huge volume of air. The CFD tools was used for thermal comfort evaluation in case of the existing heating system during the winter season. The simulation model was validated with experimental data and it was used for thermal and air velocity profiles in the occupancy zone of churchgoers. The aim of the paper is the study the feasibility of maintaining the heritage values of the churches while achieving the significant improvement of the thermal comfort.

scholarly journals Effects of Climate Change for Thermal Comfort and Energy Performance of Residential Buildings in a Sub-Saharan African Climate

Buildings ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 215 ◽  
Author(s):  
Dodoo ◽  
Ayarkwa
Keyword(s):  
Climate Change ◽  
Thermal Comfort ◽  
Energy Demand ◽  
Residential Buildings ◽  
Energy Performance ◽  
Simulation Software ◽  
Indoor Climate ◽  
Recent Climate ◽  
Sub Saharan ◽  
Cooling Energy Demand

This study presents an analysis of the impacts of climate change on thermal comfort and energy performance of residential buildings in Ghana, in sub-Saharan Africa, and explores mitigation as well as adaptation strategies to improve buildings’ performance under climate change conditions. The performances of the buildings are analyzed for both recent and projected future climates for the Greater Accra and Ashanti regions of Ghana, using the IDA-ICE dynamic simulation software, with climate data from the Meteonorm global climate database. The results suggest that climate change will significantly influence energy performance and indoor comfort conditions of buildings in Ghana. However, effective building design strategies could significantly improve buildings’ energy and indoor climate performances under both current and future climate conditions. The simulations show that the cooling energy demand of the analyzed building in the Greater Accra region is 113.9 kWh/m2 for the recent climate, and this increases by 31% and 50% for the projected climates for 2030 and 2050, respectively. For the analyzed building in the Ashanti region, the cooling energy demand is 104.4 kWh/m2 for the recent climate, and this increases by 6% and 15% for the 2030 and 2050 climates, respectively. Furthermore, indoor climate and comfort deteriorate under the climate change conditions, in contrast to the recent conditions.

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