Impacts of external insulation and reduced internal heat loads upon energy demand of offices in the context of climate change in Vienna, Austria

Berger, Tania; Amann, Christof; Formayer, Herbert; Korjenić, Azra; Pospichal, Bernhard; Neururer, Christoph; Smutny, Roman

doi:10.1016/j.jobe.2015.11.005

Cited by 33 publications

(15 citation statements)

References 6 publications

(10 reference statements)

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“…Additionally, TAS Environmental Design Solutions Limited (EDSL) was used to predict the energy loads in the school. This is well-known software that has been used in several studies in various countries, including Saudi Arabia, 24 Singapore, 25 Austria, 26 Italy, 27,28 Chile, 29 Poland, 30 United Kingdom 31,32 and Turkey. 33 The main aim of the study was to produce a guideline for the Ministry of Education to improve current and future school buildings.…”

Section: Introductionmentioning

confidence: 99%

Investigation into energy performance of a school building in a hot climate: Optimum of window-to-wall ratio

Alwetaishi

Taki

2019

Indoor and Built Environment

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Global attention is currently focussed on developing techniques to improve the thermal performance of buildings to provide indoor comfort with minimum reliance on energy load. Several studies have investigated building facade, materials used and other factors involved in building design. The aim of this study is to examine the impact of thermal insulation, shading devices, window-to-wall ratio (WWR) and a combination of these factors in a prototype school building design in the warm climate city of Taif, Saudi Arabia. The study used various methods classified into two main phases. The first phase involved on-site observation where both thermal imaging and regular cameras were used to examine the influence of orientation on glazing as a baseline. The second phase involved advanced software investigations with 2D AutoCAD, 3D Revit and computer modelling for energy evaluation and daylight factor. A detailed framework was introduced to examine current school buildings and to improve the future designs of prototype school buildings. The study revealed that a combination of applying thermal insulation along with minimising WWR is required in existing buildings within hot and dry regions. Furthermore, it was recommended that WWR should not exceed 35%, 25% and 20% for northwest, southeast and southwest building facades, respectively.

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Section: Introductionmentioning

confidence: 99%

Investigation into energy performance of a school building in a hot climate: Optimum of window-to-wall ratio

Alwetaishi

Taki

2019

Indoor and Built Environment

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“…Therefore, curtain wall is used in abundance in office buildings as a pathway for daylight. Meanwhile, shading devices are used to protect the buildings from excessive direct sunlight [2] and to reduce solar heat gain in the summer [3].…”

Section: Introductionmentioning

confidence: 99%

Using integrated parametric control to achieve better daylighting uniformity in an office room: A multi-Step comparison study

Eltaweel

2017

Energy and Buildings

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In addition to windows, louvers are the most common architectural elements widely used in office buildings to protect them from excessive daylight and improve daylight penetration as well. Advanced glazing, window blinds, other fenestration systems and their automation can further improve daylighting performance. However, the stability and uniformity of daylight distribution throughout a day inside a building remain a challenge. To explore a solution for this issue, this paper proposes an advanced integrated lighting system combining different architectural elements, which can be controlled parametrically. The suitable design of such integrated system is identified through a multi-step comparison study employing parametric design approach. The criteria is to keep a relatively uniform daylight distribution in the range of 300 -500 lux over 90% of the whole desktop area in a 7-meter-deep office room. An office building in New Cairo was chosen for a case study, where it is south oriented with a prevailing condition of clear sky. Hourly results on the 21 st of several chosen months are given to show the suitability of the proposed design throughout a year, aiming to explore the maximum use of daylight and hence reduce the energy consumption of electrical lighting. The comparison indicates that the combined use of the integrated system can achieve a satisfactory relatively uniform distribution of daylight over about 90% of the desktop area, within illuminance range of 300 -500 lux for most of the working hours throughout a year.

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“…The study used TAS EDSL 9.4.1, which is considered to be one of the most widely used energy software packages to predict the thermal performance of buildings. This is a globally used software package used for energy analysis studies across the world, including Saudi Arabia [8], Singapore [49], Austria [50], Italy [51,52], Chile [53], Poland [54], the UK [46,55,56], and Turkey [57]. Some of the thermal elements were calculated on the basis of the building material of the Palace (Table 4), such as the solar heat gain, which was affected by the WWR and the type of glazing.…”

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confidence: 99%

User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation

et al. 2020

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The study investigated the level of thermal comfort in historical buildings located at a relatively high altitude in the Arabian Desert of Saudi Arabia. The study focused on the impact of the use of thermal mass and orientation on the level of thermal performance at Shubra and Boqri Palaces. Qualitative and quantitative analyses were used in this study, including a questionnaire interview with architecture experts living at the relatively high altitude of Taif city, to obtain data and information from local experts. The computer software TAS EDSL was used along with on-site equipment, such as thermal imaging cameras and data loggers, to observe the physical conditions of the building in terms of its thermal performance. The study revealed that the experts’ age and years of experience were important aspects while collecting data from them during the survey. The use of thermal mass had a slight impact on the indoor air temperature as well as the energy consumption, but it helped in providing thermal comfort. Use of ventilation can improve thermal comfort level. Evaporative cooling technique has a considerable impact on reducing indoor air temperature with 4 °C drop, improving the thermal comfort sensation level. The novelty of this work is that, it links the outcomes of qualitative results of experts with field monitoring as well as computer modelling. This can contribute as method to accurately collect data in similar case studies.

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Impacts of external insulation and reduced internal heat loads upon energy demand of offices in the context of climate change in Vienna, Austria

Cited by 33 publications

References 6 publications

Investigation into energy performance of a school building in a hot climate: Optimum of window-to-wall ratio

Investigation into energy performance of a school building in a hot climate: Optimum of window-to-wall ratio

Using integrated parametric control to achieve better daylighting uniformity in an office room: A multi-Step comparison study

User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation

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