scholarly journals Preserving textile objects in Romanian wooden churches. Case study of the heritage wooden church form Oradea, Romania

2020 ◽  
Vol 71 (02) ◽  
pp. 112-117
Author(s):  
Ioan Oana ◽  
Liliana Indrie ◽  
Aurelia Onet ◽  
Dorina Oana ◽  
Dorina Camelia ILIEȘ ◽  
...  
Keyword(s):  
Indoor Air ◽  
Specific Method ◽  
Human Pathogens ◽  
Data Logging ◽  
Sense Data ◽  
Historic Monument ◽  
Imaging Camera ◽  
Data Function ◽  
Processing Techniques

It is important to investigate the indoor air quality, the microbial concentration of indoor air and surfaces for preserving the cultural heritage. In what regards the microclimate inside the historic monument, the wooden church, the temperature and relative humidity were monitored using the thermo-hygrometer with data function logger “Klimalogg Pro” (eight sensors), October-December 2018, the thermos-camera “Thermal Imaging Camera FLIR I7” and “Digi-Sense Data Logging Luxmeter”. Image analysis were also performed using digital image processing techniques (ARCGIS), mapping the areas damaged by temperature, humidity and also by rainwater infiltrated on canvas paintings, biodegradation, anthropically degraded areas etc. Isolation of microorganisms from the two canvas paintings and indoor air were taken though specific method, analyses showing the presence of microorganisms on the paintings, possible human pathogens especially for people with low immunity. A high fidelity database with the state of patrimony objects preserved in the Romanian wooden church and perspectives for their proper conservation could be created at a certain moment.

scholarly journals Rediscovering the “Atrium Effect” in Terms of the European Green Deal’s Objectives：A Case Study

Buildings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 46
Author(s):  
Alina Drapella-Hermansdorfer ◽  
Aleksandra Gierko
Keyword(s):  
Air Temperature ◽  
Indoor Air ◽  
Physical Parameters ◽  
Specific Method ◽  
Built Environments ◽  
Responsive Architecture ◽  
Environmentally Responsible ◽  
Biophilic Elements

In terms of the European Green Deal’s objectives, an environmentally responsible and climate responsive architecture seems to be fully desirable in the next decades. From the perspective of health-oriented design, atria and inner courtyards are gaining in significance due to their potential for regulating indoor air temperature and quality, especially if they are properly technically equipped and supported by appropriate landscaping. In this particular approach, the “atrium effect” is discussed in the presented study, in contrast to the specific method of forming the upwardly opened lobby. In the search for a method to optimize the use of the biophilic elements in semi-open built environments, the authors use ENVI-met v. 4.4.4. software to assess their impact on physical parameters of the environment.

scholarly journals Indoor air quality of museums and conservation of textiles art works. Case study: Salacea Museum House, Romania

2019 ◽  
Vol 70 (01) ◽  
pp. 88-93
Author(s):  
INDRIE LILIANA ◽  
OANA DORINA ◽  
ILIES MARIN ◽  
ILIEȘ DORINA CAMELIA ◽  
LINCU ANDREEA ◽  
...  
Keyword(s):  
Indoor Air ◽  
Air Humidity ◽  
Fungal Contamination ◽  
Data Logger ◽  
Textile Materials ◽  
Art Works ◽  
Temperature And Humidity ◽  
Data Function

The present paper is analyzing the quality of the air (temperature, humidity, light, contamination with fungi) inside the Museum House from Salacea, Bihor county, and the influence of such factors on textile materials that are exposed inside it in the context of the need to protect the heritage elements and in order to diminish the risks related to human health: the inhabitants, the tourists, museographers and all those who have access to the interior. Monitoring of the temperature and humidity was carried out between 03.06.2018 and 02.07.2018 and we used the thermo-hygrometer with data function logger KlimaLogg Pro (seven sensors), and for other analyzed parameters: Luxmeter data logger Extech SDL400 Oxygen meter Extech SDL150. The fungal contamination was determined using Koch sedimentation method. Due to the fact that the low temperature together with the high air humidity of the ambient environment stimulates the formation of microorganisms and mold and high temperatures can dehydrate the fibers by diminishing their strength and decreasing their elasticity, therefore it is necessary to maintain the standard micro climate of temperature and humidity inside the museum house.

A Study on the Performance of Stratified Air Conditioning Design in Assembly Halls – A Case Study at the Dazhi Cultural Center in Taiwan

2013 ◽  
Vol 368-370 ◽  
pp. 599-602 ◽  
Author(s):  
Ian Hung ◽  
Hsien Te Lin ◽  
Yu Chung Wang
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Indoor Air ◽  
Air Conditioning ◽  
Cfd Simulation ◽  
Indoor Temperature ◽  
Cultural Center ◽  
Computational Fluid Dynamics Cfd

This study focuses on the performance of air conditioning design at the Dazhi Cultural Center and uses a computational fluid dynamics (CFD) simulation to discuss the differences in wind velocity and ambient indoor temperature between all-zone air conditioning design and stratified air conditioning design. The results have strong implications for air conditioning design and can improve the indoor air quality of assembly halls.

Assessing ventilation strategies in a school with observed indoor air problems

Facilities ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ulrika Uotila ◽  
Arto Saari ◽  
Juha-Matti Kalevi Junnonen ◽  
Lari Eskola
Keyword(s):  
Decision Making ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Final Decision ◽  
Target Number ◽  
Content Type ◽  
Existing Building ◽  
Ventilation Strategies

Purpose Poor indoor air quality in schools is a worldwide challenge that poses health risks to pupils and teachers. A possible response to this problem is to modify ventilation. Therefore, the purpose of this paper is to pilot a process of generating alternatives for ventilation redesign, in an early project phase, for a school to be refurbished. Here, severe problems in indoor air quality have been found in the school. Design/methodology/approach Ventilation redesign is investigated in a case study of a school, in which four alternative ventilation strategies are generated and evaluated. The analysis is mainly based on the data gathered from project meetings, site visits and the documents provided by ventilation and condition assessment consultants. Findings Four potential strategies to redesign ventilation in the case school are provided for decision-making in refurbishment in the early project phase. Moreover, the research presents several features to be considered when planning the ventilation strategy of an existing school, including the risk of alterations in air pressure through structures; the target number of pupils in classrooms; implementing and operating costs; and the size of the space that ventilation equipment requires. Research limitations/implications As this study focusses on the early project phase, it provides viewpoints to assist decision-making, but the final decision requires still more accurate calculations and simulations. Originality/value This study demonstrates the decision-making process of ventilation redesign of a school with indoor air problems and provides a set of features to be considered. Hence, it may be beneficial for building owners and municipal authorities who are engaged in planning a refurbishment of an existing building.

scholarly journals Impact of Thermal Dissipation on the Lighting Performance and Useful Life of LED Luminaires Applied to Urban Lighting: A Case Study

2022 ◽  
Vol 19 (2) ◽  
pp. 752
Author(s):  
Juan de Dios Unión-Sánchez ◽  
Manuel Jesús Hermoso-Orzáez ◽  
Manuel Jesús Hervás-Pulido ◽  
Blas Ogáyar-Fernández
Keyword(s):  
Thermal Imaging ◽  
Simulation Software ◽  
Thermal Dissipation ◽  
Junction Temperature ◽  
Ansys Fluent ◽  
Imaging Camera ◽  
Fluent Simulation ◽  
Useful Life

Currently, LED technology is an established form of lighting in our cities and homes. Its lighting performance, durability, energy efficiency and light, together with the economic savings that its use implies, are displacing other classic forms of lighting. However, some problems associated with the durability of the equipment related to the problems of thermal dissipation and high temperature have begun to be detected, which end up affecting their luminous intensity and the useful life. There are many studies that show a direct relationship between the low quality of LED lighting and the aging of the equipment or its overheating, observing the depreciation of the intensity of the light and the visual chromaticity performance that can affect the health of users by altering circadian rhythms. On the other hand, the shortened useful life of the luminaires due to thermal stress has a direct impact on the LCA (Life Cycle Analysis) and its environmental impact, which indirectly affects human health. The purpose of this article is to compare the results previously obtained, at different contour temperatures, by theoretical thermal simulation of the 3D model of LED street lighting luminaires through the ANSYS Fluent simulation software. Contrasting these results with the practical results obtained with a thermal imaging camera, the study shows how the phenomenon of thermal dissipation plays a fundamental role in the lighting performance of LED technology. The parameter studied in this work is junction temperature (Tj), and how it can be used to predict the luminous properties in the design phase of luminaires in order to increase their useful life.

scholarly journals Evaluation of indoor air quality and its symptoms in office building – A case study of Mashhad, Iran

Data in Brief ◽  
2018 ◽  
Vol 20 ◽  
pp. 74-79 ◽  
Author(s):  
Zahra Atarodi ◽  
Kamaladdin Karimyan ◽  
Vinod Kumar Gupta ◽  
Morteza Abbasi ◽  
Masoud Moradi
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Office Building
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