Der Wärmedurchgang bei Doppelfenstern – Konzept zur In‐situ‐Bewertung historischer Konstruktionen

Kain, Günther; Gschwandtner, Florian; Idam, Friedrich

doi:10.1002/bapi.201710015

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Due to the fact that they have a smaller thickness (8.5 mm) compared to standard insulating glass units (minimum 14-16 mm), they can be used instead of common glass in old window units after the milling of window glass holder. The following technical issues of design and operation also require detailed study [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]: -providing thermal protection of buildings when replacing window units in historical buildings during winter operation which was caused by a change in the thermal conditions of the junction of window units to the exterior walls.…”

Section: Discussionmentioning

confidence: 99%

Architectural possibilities of using PVC window units in historical buildings

Константинов

Mukhin

2018

MATEC Web Conf.

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Abstract. The work presents the possibilities of using PVC window units in the historical buildings. There are reasons of their widespread use in projects of adaptation of historical buildings for modern use. The analysis of possible replacement options of window units of the historical heritage is done according to their architectural and historical values of the exterior and the interior. A review is made of the existing technological capabilities of modern PVC window systems used in the historical buildings. Examples of application of PVC window units in historical buildings of various architectural styles are given. Examples of structural solutions of window units and stained glass windows made of PVC in historical heritage are considered. The analysis of perspective ways of the use of modern types of translucent fillings in historical buildings can significantly improve the energy performance of these buildings and provide them with conditions that meet the modern requirements of comfort and safety.

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Section: Discussionmentioning

confidence: 99%

Architectural possibilities of using PVC window units in historical buildings

Константинов

Mukhin

2018

MATEC Web Conf.

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“…It was shown that numerical models can be used to study the effects of thermal insulation on ceilings with complex cross sections [15]. Multi-sensor in situ measurements are an effective measure to test the validity of models [16,17].…”

Section: Introductionmentioning

confidence: 99%

Mitigating Harmful Effects of Climate Warming on Ceiling Paintings by Ceiling Insulation: An Evaluation Using Timed IR Imaging and Numeric Modelling

Kain

Idam²,

Huber³

et al. 2021

Sustainability

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Due to climate change, ceiling paintings in many historic buildings are subjected to increasingly high short-term temperature change, resulting in high thermal tension caused by the construction assembly. This article focuses on the combined use of timed IR imaging and numeric modelling to evaluate insulation measures on the upper side of a ceiling to reduce thermal tensions in the painting layers, overheating in summer as well as cooling down in winter. As a model room, the southern splendour stair hall in the Burgtheater Vienna was chosen. Famous ceiling paintings created from 1886 to 1888 by Gustav Klimt and his brother Ernst Klimt can be found on this ceiling. The results show that timed IR imaging is an adequate tool to study the transient thermal behaviour of ceiling paintings which are not accessible to standard sensor measurements. Moreover, it could be shown that the presented measurement technique is well suited to validate a numeric model. The latter was applied to evaluate the potential insulation on the top of the ceiling. It was shown that cooling loads and energy loss in the room underneath can be reduced and most importantly the thermal stress in painting layers is reduced. The findings are relevant as, due to global warming, the current situation in many buildings is worsening. Considering the great intangible cultural value of many ceiling paintings, the application of the presented evaluation strategy for building physical boundaries on a ceiling with paintings seems to be appropriate.

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“…Modern technological capabilities of manufacturers of translucent structures allow the mass production of window blocks with the thermal resistance of 1.0 m 2 0 С/W and higher, which exceeds the thermal resistance of external brick walls with a thickness of 770 mm (3 bricks). When they are used, the heat loss of buildings through the outer enclosure in the winter period of operation differs from traditional significantly [7][8][9][10][11][12][13][14][15]. In this case, from the point of view of providing thermal protection, the windows will not be the most vulnerable part of the outer shell of the building.…”

Section: Introductionmentioning

confidence: 99%

Providing thermal protection when replacing window blocks in historical buildings

Константинов

Mukhin

2018

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. The work presents the prerequisites to replace the window units in the historical buildings (primarily increased energy efficiency standards of buildings and significantly changed performance requirements of window units). The analysis of possible replacement options (full/partial) of window units of the historical buildings is done according to their architectural and historical values. A review is made of the existing technological capabilities of modern window systems and translucent filling (double-glazed windows), as well as the most common solutions used in practice. The issue of providing the temperature-humidity conditions of the nodes of adjunctions of the window blocks to the openings of the external walls in the winter operating conditions is considered. For this purpose, a numerical simulation of the temperature fields of the junction points is made for various structural embodiments of window frames. It is established that in the case of a full replacement of window blocks and maintaining the existing structure of external walls (the calculation is made using the example of the most common external wall for Central Russia -a brick wall 770 mm thick), condensation may form on the inner surface of window slopes. Different options are suggested for window blocks installation, which ensure the fulfillment of sanitary and hygienic requirements. Further directions for the research on the use of modern types of translucent structures in the historical buildings are outlined.

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Der Wärmedurchgang bei Doppelfenstern – Konzept zur In‐situ‐Bewertung historischer Konstruktionen

Abstract: während bei modernen Thermofenstern, die nur eine Flügelebene aufweisen, der Gaspolster zwischen den Scheiben des Isolierglases im Zentimeterbereich liegt.

Cited by 5 publications

References 4 publications

Architectural possibilities of using PVC window units in historical buildings

Architectural possibilities of using PVC window units in historical buildings

Mitigating Harmful Effects of Climate Warming on Ceiling Paintings by Ceiling Insulation: An Evaluation Using Timed IR Imaging and Numeric Modelling

Providing thermal protection when replacing window blocks in historical buildings

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