Numerical analysis of the thermal comfort in a church building

Țurcanu, Florin Emilian; Verdeș, Marina; Ciocan, Vasilică; Burlacu, Andrei; Luciu, R S; Bălan, Marius Costel; Sosoi, Gavril

doi:10.1051/e3sconf/20198502008

Cited by 3 publications

(3 citation statements)

References 7 publications

(9 reference statements)

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“…Additionally, heating buildings on a constant cycle causes increased air movements and temperature differences which cause faster soiling of objects and fabric. Static heaters and radiators often blacken nearby surfaces and walls [26]. Heating a church daily would result in large fluctuations in relative humidity, potentially damaging artefacts, art work and wooden items [27].…”

Section: Data Gathering On Heating Strategiesmentioning

confidence: 99%

Identifying Heating Technologies suitable for Historic Churches, Taking into Account Heating Strategy and Conservation through Pairwise Analysis

et al. 2021

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As a result of difficulty meeting energy efficiency through fabric alteration, historic churches must focus on heating systems and operational strategy as key to reducing carbon emissions. Strategies can be defined as local or central heating. Local heating strives to heat occupants, while central heating aims to heat the building fabric and therefore the occupants. Each strategy requires a different approach to control and technology in response to priorities such as conservation, comfort and cost. This paper reviews current and emerging technologies in the context of church heating. The fuel source, heat generation technology and heat emitter are arranged in a matrix, with pairwise analysis undertaken to create weightings for each assessment criteria. The process of constructing the matrix and undertaking pairwise analysis using personas is discussed. The result is a ranking of fuels and technologies appropriate to the main priorities and individual preferences. Some desirable technologies are inherently more damaging to historic church environments due to invasive installation. These technologies score poorly when the aim is fabric preservation. Greener fuels, like biomass, may rank lower than fossil fuels, due in part to operational differences.

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Section: Data Gathering On Heating Strategiesmentioning

confidence: 99%

Identifying Heating Technologies suitable for Historic Churches, Taking into Account Heating Strategy and Conservation through Pairwise Analysis

et al. 2021

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“…Turcanu et al 45 studied the simulation method for evaluating the heating system in a church, as well as the indoor microclimate based on monitoring campaigns to achieve significant improvement of the thermal comfort. 46 On the one hand, they modelled and validated the indoor climate measurements through numerical analyses; this, by evaluating the heating system performance. 45 On the other hand, computational fluid dynamics (CFD) was used during the winter season for thermal comfort evaluation inherent to the existing heating system.…”

Section: Introductionmentioning

confidence: 99%

“…45 On the other hand, computational fluid dynamics (CFD) was used during the winter season for thermal comfort evaluation inherent to the existing heating system. 46 Iñigo et al 47 analysed RH and T data recorded by sensors installed both in the inner and outer parts of a Spanish church during the restoration of the decorative parts and plaster, in order to characterize different microenvironments. In order to monitor the climatic variances between different locations, Canonical Biplot was applied.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the heat changes in an ancient church because of restoration works: A microclimatic study supported by thermal images

Ridolfi

Crescenzi

Zeli

et al. 2021

Indoor and Built Environment

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This work is centred on an ancient Italian church. Since 2011, a restoration plan has been undertaken by following sequential phases. The methodological approach to restoration was guided by environmental monitoring campaigns. In particular, two thermo-hygrometric campaigns were carried out during the warm months of the years 2015 and 2016. The first set of measurements was executed during the restoration of facades and roofs, making it possible to reach even areas that are usually difficult to access. The second set was performed to evaluate the indoor thermo-hygrometric conditions following the work of the previous year. This was intended to assess their differences in variability, the influence of the outdoor environment and any real and perceived improvement. Results demonstrate that thermal images helped in identifying both the heat sources causing thermal discomforts and the good thermal capacity of masonries. Concerning the heat index (HI), the church showed an improvement in the trend of malaise perceived by people during the second summer period (∼2°C lower than 2015). Finally, in the last microclimate monitoring, the roof structure no longer acted as an amplifier for daily temperature excursions.

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Microclimatic Monitoring—The Beginning of Saving Historical Sacral Buildings in Europe

Poljak

Ponechal

2023

Energies

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A suitable indoor climate positively affects the lifespan of historical building structures. The path to an agreeable climate begins with monitoring current conditions. Considerable attention is given to monitoring the indoor climate of historical buildings. The motivation for monitoring air temperature and surface temperatures, relative air humidity or airflow can be, for example, the installation of heating, the occurrence of biotic damage, and others. Through the analysis of the most frequently used keywords, a strong connection was found, for example, between thermal comfort and the church. This review also summarises the various reasons for conducting microclimate monitoring studies in historical religious buildings on the European continent. It is supplemented with an evaluation of the monitoring methodology from the chosen period of the year point of view, the measured parameters, and the length of the interval between the recordings of quantities. It was found that in more than one-third of the cases, the recording time was less than or equal to 15 min, but mostly less than or equal to 1 h. Quite often, monitoring results are used to calibrate a simulation model describing the hydrothermal behaviour of a historical object under various operation alternatives (e.g., influence of ventilation, climate change, occupancy, etc.). This way, it is possible to test various intelligent systems in the virtual world without much risk before they are used in an actual building application.

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Numerical analysis of the thermal comfort in a church building

Cited by 3 publications

References 7 publications

Identifying Heating Technologies suitable for Historic Churches, Taking into Account Heating Strategy and Conservation through Pairwise Analysis

Identifying Heating Technologies suitable for Historic Churches, Taking into Account Heating Strategy and Conservation through Pairwise Analysis

Evaluation of the heat changes in an ancient church because of restoration works: A microclimatic study supported by thermal images

Microclimatic Monitoring—The Beginning of Saving Historical Sacral Buildings in Europe

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