Assessment of Different Envelope Configurations via Optimization Analysis and Thermal Performance Indicators: A Case Study in a Tropical Climate

Araúz, Jesús; Mora, Dafni; Austin, Miguel Chen

doi:10.3390/su14042013

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…The variables of interest selected for this study were electricity consumption by cooling (air conditioning) and hours of non-comfort with 80% acceptability (ASHRAE 55) [32]. Both temperature options and air conditioning usage schedules were selected based on survey results, while building materials were selected based on local market layout [33]. The design variables with the selected options to be evaluated are shown in Table 3.…”

Section: Thermo-energy Evaluation By Parametric Analysismentioning

confidence: 99%

A Reference Framework for Zero Energy Districts in Panama Based on Energy Performance Simulations and Bioclimatic Design Methodology

et al. 2023

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The need for efficient buildings to contribute to sustainable development has led to the proposal of goals and regulations in different countries linked to net zero energy objectives, following approaches specific to their regions. Such regulations are not yet developed in a developing country such as Panama. Thus, this study develops the first framework for Zero Energy Districts (ZED) in Panama based on passive and active solutions through dynamic simulation. For this, an existing urbanization area consisting of 34 residential buildings, called the existing case (EC), was studied. After undergoing a design based on the bioclimatic methodology, a redesigned case (RC) is proposed to maintain thermal comfort and reduce energy consumption. Key redesign factors are the buildings’ shape, orientation, glazing, the use of shadows, material of the walls, and the air conditioning configuration. Results showed energy consumption decreases by 37.5% when considering all buildings with natural ventilation, reaching ranges of positive net energy (+356.50 kWh/m2y). In the case of nearly ZED in Panama, the ranges could be considered between 14 and 180 kWh/m2y. This balance indicates that there is potential on site to develop zero energy districts.

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Section: Thermo-energy Evaluation By Parametric Analysismentioning

confidence: 99%

A Reference Framework for Zero Energy Districts in Panama Based on Energy Performance Simulations and Bioclimatic Design Methodology

et al. 2023

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“…This is the reason why one of the activities planned within the IDDS22-30 research project is aimed precisely at a mapping of existing buildings, particularly with reference to the research area identified in Panama City. Constructive features have been considered in studies such as [20] and [21]. However, with reference to the definition of zero-energy buildings concerning new constructions.…”

Section: Description Of the Buildings Stockmentioning

confidence: 99%

A Methodology to identify appropriate refurbishment strategies towards zero energy buildings in a hot and humid climate

Austin

Carpino

Mora

et al. 2022

J. Phys.: Conf. Ser.

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Significant actions on the building stock are required to reduce energy consumption and emissions from buildings and achieve carbon neutrality by 2050. Consistently, the renovation approach of existing buildings could aim to obtain nearly Zero Energy Buildings or Net Zero Energy Buildings (NZEB). In particular, the solutions to obtain zero-energy buildings vary according to the reference climatic conditions and the technical-constructive characteristics of the buildings undergoing renovation. As part of a research project involving the Technological University of Panama (UTP) and the University of Calabria (UNICAL), this work presents a preliminary investigation aimed at identifying the most appropriate technological solutions to convert existing buildings in Panama into zero-energy buildings. In particular, the study seeks to characterize the energy demand of buildings in the research area, consisting of Panama City, and to identify a set of possible energy efficiency measures applicable in hot and humid climates through dynamic simulations. The preliminary results from the sensitivity and optimization analyses highlight the capacity of local regulations and buildings’ capacity towards achieving zero-energy buildings by enhancing the efficiency of appliances, lighting, and air conditioner system, but also by implementing passive strategies such as the bioclimatic strategies.

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“…Windows, walls, and roofs are the areas most prone to have heat transfer with the environment. A significant amount of energy in the form of heat enters a space through the roof, as it is the part where the most energy is concentrated by radiation and convection due to continuous solar exposure during the day [ 1 , 2 ]. Critical heat gains through the roof were obtained when performing yearly monthly averaged simulation in Panama’s climate conditions (between 780 and 900 kWh) [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

“…A significant amount of energy in the form of heat enters a space through the roof, as it is the part where the most energy is concentrated by radiation and convection due to continuous solar exposure during the day [ 1 , 2 ]. Critical heat gains through the roof were obtained when performing yearly monthly averaged simulation in Panama’s climate conditions (between 780 and 900 kWh) [ 1 ]. Therefore, it is important to conduct a study that allows for proposing solutions related to this issue.…”

Section: Introductionmentioning

confidence: 99%

Rice Husk-Based Insulators: Manufacturing Process and Thermal Potential Assessment

Cigarruista Solís,

Chen Austin,

Deago

et al. 2024

Materials

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The development of bio-insultation materials has attracted increasing attention in building energy-saving fields. In tropical and hot–humid climates, building envelope insulation is important for an energy efficient and comfortable indoor environment. In this study, several experiments were carried out on a bio-insulation material, which was prepared by using rice husk as a raw material. Square rice husk-based insultation panels were developed, considering the ASTM C-177 dimensions, to perform thermal conductivity coefficient tests. The thermal conductivity coefficient obtained was 0.073 W/(m K), which is in the range of conventional thermal insulators. In a second phase of this study, two experimental enclosures (chambers) were constructed, one with rice husk-based insulation panels and the second one without this insulation. The measures of the temperatures and thermal flows through the chambers were obtained with an electronic module based on the ARDUINO platform. This module consisted of three DS18B20 temperature sensors and four Peltier plates. Daily temperature and heat flux data were collected for the two chambers during the dry season in Panama, specifically between April and May. In the experimental chamber that did not have rice husk panel insulation on the roof, a flow of up to 28.18 W/m2 was observed, while in the chamber that did have rice husk panels, the presence of a flow toward the interior was rarely observed. The rice husk-based insulation panels showed comparable performance with conventional insulators, as a sustainable solution that takes advantage of a local resource to improve thermal comfort and the reduction of the environmental impact.

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Assessment of Different Envelope Configurations via Optimization Analysis and Thermal Performance Indicators: A Case Study in a Tropical Climate

Cited by 8 publications

References 21 publications

A Reference Framework for Zero Energy Districts in Panama Based on Energy Performance Simulations and Bioclimatic Design Methodology

A Reference Framework for Zero Energy Districts in Panama Based on Energy Performance Simulations and Bioclimatic Design Methodology

A Methodology to identify appropriate refurbishment strategies towards zero energy buildings in a hot and humid climate

Rice Husk-Based Insulators: Manufacturing Process and Thermal Potential Assessment

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