Evaluation of thermal comfort standards in office buildings of Chile: Thermal sensation and preference assessment
TL;DR: In this article, a field study was conducted in 19 buildings in Chile: 10 in Concepcion and 9 in Santiago, where thermal comfort surveys and simultaneous measurements were carried out to calculate users' comfort temperatures according to their thermal sensation and thermal preference.
About: This article is published in Building and Environment.The article was published on 2020-10-01. It has received 19 citations till now. The article focuses on the topics: Thermal comfort & HVAC.
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TL;DR: In this paper, the authors applied a Bayesian neural network (BNN) algorithm to build a predictive model for occupant thermal preference using the ASHRAE Global Thermal Comfort Database II.
33 citations
TL;DR: This research presents an important contribution as it provides an intelligible workflow that makes the energy simulation process friendlier and more intuitive and that was able to generate plausible results using BIM-BEM interoperability.
Abstract: The high amount of energy consumption demanded by buildings entails the worsening of several environmental issues Therefore, actions to make use of this resource more efficient become necessary The most used methods of Building Energy Modeling (BEM) designated to assess the functionality of such actions are excessively complex and, in many cases, generate unreliable results Thus, this work aims to elaborate an approach based on Building Information Modeling (BIM) to improve energy efficiency in buildings in a simplified and user-oriented manner For this purpose, a case study was developed in which two classrooms of an educational building, located in the Amazon region – Brazil, were subjected to three-dimensional modeling and energy simulations in BIM software In addition to evaluating the classrooms’ current performance regarding daylight, thermal conditions and energy consumption, such simulations intended to assess the implantation of two strategies that sought to reduce energy consumption and maintain thermal and visual comfort by taking advantage of daylight and natural ventilation Besides of energy saving, such strategies were chosen as they promote Indoor Environmental Quality (IEQ) and help to mitigate the indoor transmission of infectious agents, which is fundamental due to the COVID-19 pandemic scenario, especially in educational environments The results showed that the strategy based on daylight contribution generated energy savings of around 8% for one of the rooms, and 12% for the other, while the one that exploited the use of natural ventilation was able to reduce energy consumption by about 7% for one of the rooms, and 9% for the other Therefore, this research presents an important contribution as it provides an intelligible workflow that makes the energy simulation process friendlier and more intuitive and that was able to generate plausible results using BIM-BEM interoperability © 2021 Elsevier Ltd
14 citations
30 May 2021
TL;DR: In this article, the results of thermal comfort and air quality studies in naturally ventilated residential buildings in Kampala City, Uganda were presented for seven buildings over fifteen days during the month of June 2019.
Abstract: This paper presents the results of thermal comfort and air quality studies in naturally ventilated residential buildings in Kampala City, Uganda. Questionnaire surveys were used for obtaining occupant subjective thermal sensation votes. Indoor and outdoor measurements for air temperature (Ta), Mean Radiant Temperature (MRT), relative humidity, air speed, and air quality were done for seven buildings over fifteen days during the month of June 2019. DesignBuilder software was used to develop the reference building model and to simulate strategies for improvement of thermal comfort. Survey results showed that 67.8% of the respondents were comfortable with the indoor thermal environment. The indoor air temperature range was 22.7°C - 27.9°C which lies within the 80% acceptable limits set by ASHRAE 55. The measured indoor MRT range was 24.24°C - 25.57°C. Measured levels of indoor PM2.5 were double the World Health Organization recommended limits, while the levels of PM10 were thrice the recommended limits of ASHRAE 62.1. The CO2 concentrations were within the limits set by ASHRAE 62.1. The developed model predicted comfortable indoor conditions with a temperature range of 23.6°C - 25.3°C based on the 80% acceptable limits set by ASHRAE 55. The results show that majority of occupants preferred cooler temperatures during the day which is justified by the use of adaptive measures to obtain thermal comfort.
6 citations
TL;DR: In this article, the authors used simulation works, objective measurements and field surveys to determine the existing thermal comfort conditions in a naturally ventilated public hospital ward by using three methods: simulation works and objective measurements.
6 citations
TL;DR: In this paper , the authors used simulation works, objective measurements and field surveys to determine the existing thermal comfort conditions in a naturally ventilated public hospital ward by using three methods: simulation works and objective measurements.
6 citations
References
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TL;DR: In this article, the authors analyzed available information concerning energy consumption in buildings, and particularly related to HVAC systems, and compared different types of building types and end uses in different countries.
5,288 citations
Book•
01 Jan 1972
TL;DR: In this paper, an account of research undertaken by the author and his colleagues at the Technical University of Denmark and at the Institute for Environmental Research, Kansas State University is described. But the data in the literature on thermal comfort are extensive, they are disjointed Other CABI sites
Abstract: This book is basically an account of research undertaken by the author and his colleagues at the Technical University of Denmark and at the Institute for Environmental Research, Kansas State University. Although the data in the literature on thermal comfort are extensive, they are disjointed Other CABI sites
3,930 citations
Book•
09 Feb 2004
TL;DR: In this paper, the authors present a review of the IUA Declaration and RAIA Environment Policy Index, focusing on the thermal environment of buildings and the thermal design: passive controls: HVAC.
Abstract: Introduction Part I: Heat: The Thermal Environment 1.1 Physics of Heat 1.2 Thermal Comfort 1.3 Climate 1.4 Thermal behaviour of buildings 1.5 Thermal design: passive controls 1.6 Active controls: HVAC Part II: Light: The Luminous Envrionment 2.1 Physics of Light 2.2 Vision 2.3 Daylight and Sunlight 2.4 Design Methods 2.5 Electric Lighting Part III: Sound: The Sonic Environment 3.1 Physics of Sound 3.2 Hearing 3.3 Noise Control 3.4 Room Acoustics Part IV: Resources 4.1 Water and Wastes 4.2 Energy 4.3 Renewable Energy 4.4 Energy Use 4.5 Sustainability Issues References Bibliography (further reading) Appendix 1: IUA Declaration Appendix 2: RAIA Environment Policy Index
421 citations
TL;DR: In this paper, the authors argue that building users play a critical but poorly understood and often overlooked role in the built environment, and they find purely architectural solutions such as those proposed by the 2030 Challenge, to be necessary but not sufficient.
Abstract: Reducing energy use in buildings is a critical component of meeting carbon reduction commitments. There are several ways of accomplishing this goal, each of which emphasizes actions by a different set of stakeholders. This paper argues that building users play a critical but poorly understood and often overlooked role in the built environment. In the face of climate change, the paper finds purely architectural solutions, such as those proposed by the 2030 Challenge, to be necessary but not sufficient. To fully address the task ahead, it argues that architects need to develop professional expertise and seek ways of integrating user involvement in building performance. Moreover, a system of professions standpoint suggests it may be wise for architects to claim this role before another group of building professionals does.
410 citations