scholarly journals Comparison of passive design strategies to improve living conditions: a study in Ondjiva, Southern Angola

2021 ◽  
Vol 6 ◽  
pp. 21
Author(s):  
Joana Aleixo ◽  
Gonçalo Roque Araújo ◽  
Manuel Correia Guedes
Keyword(s):  
Energy Consumption ◽  
Computer Simulations ◽  
Living Conditions ◽  
Design Strategies ◽  
Housing Design ◽  
Correct Orientation ◽  
Passive Design ◽  
Passive Strategies ◽  
Passive Techniques ◽  
Correct Design

Passive design strategies aim at creating comfortable buildings while reducing their energy consumption. Simple strategies such as the correct orientation of the building, the correct design of the building's openings, or the correct sizing of the building's constituent parts (such as walls, ceilings, etc.) according to their material specificities (regarding the region's climate) would greatly improve the performance of a building. This paper intends to show how the application of simple passive techniques in housing design can reduce the energy loads spent annually and improve the house's interior comfort. It translates the results of interior comfort computer simulations into suggestions for the application of passive strategies in housing design, to improve the living conditions in Southern Angola.

scholarly journals A MODEL OF A NEAR-ZERO ENERGY HOME (nzeh) USING PASSIVE DESIGN STRATEGIES AND PV TECHNOLOGY IN HOT CLIMATES

2016 ◽  
Vol 11 (1) ◽  
pp. 38-70 ◽  
Author(s):  
Ashraf T. Syed ◽  
Adel A. Abdou
Keyword(s):  
Energy Consumption ◽  
Energy Conservation ◽  
Energy Performance ◽  
Base Case ◽  
Solar Pv ◽  
Design Strategies ◽  
Zero Energy ◽  
Energy Potential ◽  
Housing Design ◽  
Passive Design

INTRODUCTION Recent development has seen a drastic increase in energy use trends in Saudi Arabian buildings leading to a demand for an effective course of action for energy conservation and production. A case study-based research initiative exploring near-zero energy potential in Saudi Arabia was undertaken. A 4-bedroom detached single-family faculty residence at King Fahd University of Petroleum and Minerals (KFUPM) representing common regional housing design trends was utilized. A base case simulation model of the house was developed and validated using short-term and real-time energy consumption data. Three sets of strategies: passive design strategies, representative codes and standards, and renewable technology were employed in the new design of the house. Passive strategies comprised a green roof, a ventilated wall system, a sloped roof, and insulation for thermal bridges. These alternatives helped reduce the annual energy consumption of the house by 17.2%. The most recent version of the International Energy Conservation Code (IECC 2012) was also incorporated along with ASHRAE Standard 62.2 for ventilation. The code and standard together reduced the annual energy consumption by 31.1%. Solar PV was then utilized to reduce grid utilization for the remainder of the house energy loads. This strategy provided 24.7% of the total energy consumed annually. A combination of strategies showed a 70.7% energy consumption reduction, thereby decreasing the energy index of the house from 162.9 to 47.7 kWh/m2/yr. The Zero Energy Building (ZEB) concepts and strategies utilized in this study demonstrate a socially responsible approach to achieving near-zero energy performance for an existing house.

scholarly journals Sustainable Guidelines for Enhancing Indoor Thermal Comfort in Coptic Churches in Egypt Using Passive Design Strategies; Case Study St. Barbarah and Virgin Mary Churches

2021 ◽  
Vol 17 ◽  
pp. 211-221
Author(s):  
Katei Yassa ◽  
Gehan Nagy
Keyword(s):  
Thermal Comfort ◽  
Virgin Mary ◽  
Design Strategies ◽  
Indoor Thermal Comfort ◽  
Passive Design ◽  
Before And After ◽  
Coptic Orthodox ◽  
Passive Strategies ◽  
Typical Summer ◽  
Passive Techniques

Since the 20th century, the temperature has risen, worldwide, due to climate change causing global warming. Such phenomena have resulted in thermal dissatisfaction within various buildings indoor spaces including Egyptian Coptic Orthodox churches. Heritage churches designs have always implemented passive strategies to provide indoor thermal comfort. However, modern churches design tend to use active strategies to provide indoor thermal satisfaction instead of referring to the use of passive designs. Accordingly, the main purpose of this research is to identify a set of guidelines to enhance indoor thermal comfort in modern Coptic Orthodox churches using passive design strategies. The research has adapted a mixed method approach where an in-depth literature review resulting a qualitative summary of passive techniques used in heritage Coptic churches, then followed by a comparative analysis between two Egyptian case studies; the first is a heritage church (St. Barbarah church) and the other is modern which is (Virgin Mary church) based on the deducted passive strategies from the literature. Moreover, an applicable simulation for varying the methodology, using Design Builder, where the modern church will be simulated and tested for thermal comfort before and after modifying it using the passive strategies deducted from the literature. The research’s main findings were the list of passive techniques that could be used to enhance the indoor thermal comfort, while the simulation experimental results where related to a typical summer week, showing that for the average air temperature and the average solar gains, the triple glazing was the most effective in causing indoor thermal comfort. But, for the average relative humidity and average of total fresh air, insulation has shown to be most effective in providing enhanced indoor thermal comfort. To conclude, a set of guidelines has been deduced from the methods adapted in the research showing the most suitable and applicable passive design strategies that could be used inside Coptic Orthodox churches to enhance indoor thermal comfort.

scholarly journals Passive Design Strategies for Energy Efficient Buildings in the Arabian Desert

2022 ◽  
Vol 7 ◽  
Author(s):  
Nedhal Al-Tamimi
Keyword(s):  
Energy Consumption ◽  
Thermal Insulation ◽  
Residential Buildings ◽  
Green Roofs ◽  
Base Case ◽  
Design Strategies ◽  
Total Energy Consumption ◽  
Building Envelopes ◽  
Passive Design ◽  
Shading Devices

This study aims to assess passive design features through the extensive modifications of building envelopes to affect the energy efficiency of residential buildings in hot arid climates. In support of the aim of this research, the annual electric energy bill of a typical residential building in Sharurah was collected and analyzed. Then, the DesignBuilder simulation program was used to investigate how different modifications of building envelopes could affect the energy consumption of the residential buildings under common scenarios. Varied thermal insulation, different types of glass, shading devices, and green roof were investigated with this perspective. The simulation results show that thermal insulation can significantly reduce annual energy consumption by as high as 23.6%, followed by green roofs. In contrast, shading devices and glazing system types were fewer superiors. The results also indicate that the effective combination of certain strategies can reduce total energy consumption by 35.4% relative to the base case (BC) of this research.

scholarly journals Passive design strategies for medium-format retail buildings in Toronto toward NZE Using Ecotect® Analysis 2011, with a case-study of a retail building in Toronto, ON

2021 ◽  
Author(s):  
Issam A. Shukor
Keyword(s):  
Architectural Design ◽  
Energy Use ◽  
Exhibit Design ◽  
Design Strategies ◽  
Design Models ◽  
Design Project ◽  
Passive Design ◽  
Passive Strategies ◽  
Energy Use Intensity

This paper studied passive design strategies available for medium-format retail buildings in Toronto. An existing retail building, designed by the researcher and built in 2014, was chosen as a case study. A framework of four models to show incremental improvements was created and multiple passive design strategies were applied to each model. The framework targeted four energy goals. Each goal represented a level of higher efficiency using Energy Use Intensity (EUI). Each of the four design models was simulated using Ecotect® and all results documented and analyzed. At the end of last model’s analysis, an architectural design project to exhibit design strategies was created. There are perhaps two significant points that the study has achieved. First point was the identification of key passive strategies that can be implemented in retail buildings in Toronto. The second was the methodology by which incremental improvements with pre-set energy targets can be followed with validated results.

scholarly journals Passive design strategies for medium-format retail buildings in Toronto toward NZE Using Ecotect® Analysis 2011, with a case-study of a retail building in Toronto, ON

2021 ◽  
Author(s):  
Issam A. Shukor
Keyword(s):  
Architectural Design ◽  
Energy Use ◽  
Exhibit Design ◽  
Design Strategies ◽  
Design Models ◽  
Design Project ◽  
Passive Design ◽  
Passive Strategies ◽  
Energy Use Intensity

This paper studied passive design strategies available for medium-format retail buildings in Toronto. An existing retail building, designed by the researcher and built in 2014, was chosen as a case study. A framework of four models to show incremental improvements was created and multiple passive design strategies were applied to each model. The framework targeted four energy goals. Each goal represented a level of higher efficiency using Energy Use Intensity (EUI). Each of the four design models was simulated using Ecotect® and all results documented and analyzed. At the end of last model’s analysis, an architectural design project to exhibit design strategies was created. There are perhaps two significant points that the study has achieved. First point was the identification of key passive strategies that can be implemented in retail buildings in Toronto. The second was the methodology by which incremental improvements with pre-set energy targets can be followed with validated results.

scholarly journals Survey on the Indoor Thermal Environment and Passive Design of Rural Residential Houses in the HSCW Zone of China

2019 ◽  
Vol 11 (22) ◽  
pp. 6471 ◽  
Author(s):  
Rui ◽  
Zhang ◽  
Shi ◽  
Pan ◽  
Chen ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Room Temperature ◽  
Phase Change Materials ◽  
Thermal Environment ◽  
High Energy ◽  
Building Envelope ◽  
Current Status ◽  
Design Strategies ◽  
Indoor Thermal Environment ◽  
Passive Design

Despite their high energy consumption, rural residential houses in the hot summer and cold winter (HSCW) zone still have a generally poor indoor thermal environment. The objective of this study was to understand the current status of the indoor thermal environment for rural residential houses in the HSCW zone and analyze its cause in order to develop some strategies for improvement through passive design of the building envelope. Face-to-face questionnaires and interviews, air-tightness testing, and temperature and humidity monitoring were conducted to understand the building envelope, energy consumption, and indoor thermal environment. Then, some passive design strategies were simulated, including the application of functional interior materials such as hygroscopic and phase change materials. An overall passive design for the building envelope can increase the room temperature by 3.6 °C, reduce the indoor relative humidity by 12% in the winter, and reduce the room temperature by 4.4 °C in the summer. In addition, the annual energy-saving rate can reach ~35%.

Low-cost retrofit packages for residential buildings in hot-humid Lagos, Nigeria

2019 ◽  
Vol 37 (3) ◽  
pp. 250-272 ◽  
Author(s):  
Nwakaego Chikaodinaka Onyenokporo ◽  
Ekele Thompson Ochedi
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
Low Income ◽  
Residential Buildings ◽  
Relevant Literature ◽  
Building Envelope ◽  
Design Strategies ◽  
Content Type ◽  
Passive Design ◽  
Reducing Energy

Purpose The purpose of this paper is to develop a set of affordable retrofit packages that can be applied to existing residential buildings in hot-humid regions to improve occupants’ thermal comfort and reduce energy consumption. Design/methodology/approach A critical review of relevant literature to identify passive design strategies for improving thermal comfort and reducing energy consumption in hot-humid climates with focus on the building envelope was conducted in addition to a simulation study of an existing building typology in study area. Findings There is enormous potential to reduce energy costs and improve thermal comfort through building retrofit packages which is a recent concept in developing countries, such as Nigeria. Analysing the results of the retrofit interventions using building energy simulation helped in developing affordable retrofit packages which had optimum effect in improving indoor comfort temperature to the neutral temperature specified for hot humid Nigeria and further down to 3°C less than that of the reference building used. The use of passive design strategies to retrofit the building might help homeowners reduce their annual energy consumption by up to 46.3 per cent just by improving the indoor thermal comfort. Originality/value In addition to improving thermal comfort and reducing energy consumption, this research identified affordable retrofit packages and considered its cost implications especially to low-income earners who form a larger population of Lagos, Nigeria, as this was not considered by many previous researchers.

scholarly journals Industrial Buildings with Zero Energy Consumption: Cathedral Warehouse for Sherry Wines

2022 ◽  
Vol 14 (1) ◽  
pp. 563
Author(s):  
Eduardo Galán Navia-Osorio ◽  
Fernando R. Mazarrón ◽  
César Porras-Amores ◽  
Ignacio Cañas
Keyword(s):  
Energy Consumption ◽  
Thermal Conditions ◽  
Industrial Sector ◽  
Design Strategies ◽  
Zero Energy ◽  
Industrial Buildings ◽  
Oceanic Climate ◽  
Passive Design ◽  
Data Points ◽  
The Right

The industrial sector needs solutions and strategies that allow buildings to reduce their energy consumption and develop their daily business activities. This paper discusses the long-term monitoring measures of indoor thermal conditions in a warehouse with zero energy consumption. The objective is to promote the use of passive design strategies within the industrial sector by analyzing an example of the feasibility of achieving controlled environmental conditions with zero energy consumption. In total, more than a million data points were processed and analyzed in different periods of the year. Experimental measurements showed strong gradients in the vertical distribution of temperature, this being a key aspect of the general behavior of the indoor environment of the warehouse. A standard comparison variable was developed to quantify the monthly and daily evolution of vertical stratification of the air to explain in detail the thermal behavior of the warehouse throughout the year. The results showed the efficacy of the design of these constructions to mitigate the high temperatures typical in a Mediterranean-Oceanic climate. This example of ingenuity in passive design demonstrates how, by combining the right strategies, the desired conditions can be obtained without any energy consumption.

scholarly journals THE APPLICATION OF PASSIVE DESIGN STRATEGIES AS SUSTAINABLE OPERATION AND MAINTENANCE IN A MODEL CONFERENCE CENTRES (A CASE STUDY OF AMINU KANO CENTRE FOR DEMOCRATIC RESEARCH AND TRAINING (AKCDR&T))

2021 ◽  
pp. 23-39
Author(s):  
Alfa Sharif ◽  
Muhammad Mukarram ◽  
Isyaku Rabi’u ◽  
Rabi’u Inusa
Keyword(s):  
Energy Consumption ◽  
Natural Ventilation ◽  
Relevant Information ◽  
Building Envelope ◽  
Comfort Level ◽  
Design Parameters ◽  
Design Strategies ◽  
Passive Design ◽  
Conference Centre

ABSTRACT: This research sought to reduce uncomfortable conditions created by extremes of heat and dryness in order to achieve well balanced indoor and outdoor climate, through the application of passive design strategies in Conference Centre located in hot dry climate of Kano Nigeria. Passive design utilizes natural sources of heating and cooling breezes. It is achieved by appropriately orientating the building on its site and carefully designing the building envelope (roof, walls, windows and floor). External features such as fountain, soft landscaping and proper site planning improves micro climate which in turn helped in achieving good passive design. The methodology employed is case study and relevant information sourced from pertinent literature and the internet was taken into consideration. Research has shown that more than40% of energy consumption in any building is used for cooling and lighting in order to achieve comfort level. In the course of the research, the building was studied to evaluate the use of passive elements that relates to passive lighting and cooling which are the main source of energy consumption such as building envelop, natural lighting, natural ventilation, Site and external spaces, building form, building orientation, wall/window shading and existing of energy source on conference centre building. Research has shown that, the design parameters obtained from field survey are the principal factors responsible for any good passive design of most public building such as conference centre building.

scholarly journals Thermal Energy Performance Simulation of a Residential Building Retrofitted with Passive Design Strategies: A Case Study in Mexico

2021 ◽  
Vol 13 (14) ◽  
pp. 8064
Author(s):  
Ana Paola Vargas ◽  
Leon Hamui
Keyword(s):  
Energy Consumption ◽  
Thermal Energy ◽  
Energy Savings ◽  
Energy Performance ◽  
High Energy ◽  
Base Case ◽  
Single Family ◽  
Design Strategies ◽  
Performance Simulation ◽  
Passive Design

High energy consumption as a result of an inefficient design has both economic and environmental repercussions throughout the life cycle of a building. In Mexico, the residential sector is the third-largest final energy consumer, therefore improving the performance of existing buildings is considered an effective method in achieving energy savings. Moreover, in Mexico warm climate regions predominate, which impacts energy consumption. This article examines a linked, single-family house located in the hot-humid climate city of Villahermosa, Tabasco (México). DesignBuilder software was used to conduct the thermal energy performance simulation of the existing building (base case) and to evaluate the energy-saving potentials by implementing different passive design strategies. As a result, the annual electricity consumption of the base case decreased a maximum of 2.0% with the passive design strategy in exterior windows, 4.9% in walls and, 13.7% reduction in roofs, the latter being the enclosure with the greatest reduction achieved. Nevertheless, a final adaptation proposal with the passive design strategies, whose results represented the highest energy savings, accomplished a total reduction of 23.5% with a payback period of 5.8 years.

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