scholarly journals Design Elements in Apartments for Adapting to Climate: A Comparison between Korea and Singapore

2020 ◽  
Vol 12 (8) ◽  
pp. 3244
Author(s):  
Seo Ryeung Ju ◽  
Jeong Eun Oh
Keyword(s):  
Private Sector ◽  
Natural Ventilation ◽  
Environmental Context ◽  
Transformation Process ◽  
Climatic Conditions ◽  
The South ◽  
Heat Gain ◽  
Design Elements ◽  
Critical Regionalism ◽  
Unit Plans

Currently, almost 80% and 50% of Singapore’s and Korea’s residents, respectively, live in apartments. Despite their earlier unfamiliarity with apartments compared with traditional housing, they have accepted apartments for the convenience they offer and as a symbol of modernity. However, the climatic conditions of these countries are extremely different. Hence, this study first examined the critical regionalism that should be considered from the environmental context, such as the geography, climate, and topography, when building apartments. Reviewing the transformation process of apartments, we can determine the types of design elements and principles developed under different climatic conditions. The representative unit plans from 1960 to 2010 were collected for analysis from Singapore’s Housing and Development Board and the private sector in Korea. The analysis revealed that Singapore’s apartments have evolved to facilitate natural ventilation. Irregular unit forms, an atrium, and the location of the utility space are unique elements. The atrium-type apartment can be considered the most regionalized design. Conversely, in Korea, the focus is on heat gain and cross-ventilation, resulting in simple square-form units oriented toward the south and double enveloped by additional windows. The staircase-type apartment predominates. Thus, this study shows that apartments evolved differently in each country, resulting in unique regionalized forms primarily determined by climatic conditions.

Investigation of the natural ventilation of wind catchers with different geometries in arid region houses

2020 ◽  
Vol 14 (3) ◽  
pp. 7109-7124
Author(s):  
Nasreddine Sakhri ◽  
Younes Menni ◽  
Houari Ameur ◽  
Ali J. Chamkha ◽  
Noureddine Kaid ◽  
...  
Keyword(s):  
Arid Region ◽  
Natural Ventilation ◽  
Reduction Rate ◽  
Internal Flow ◽  
Climatic Conditions ◽  
Maximum Pressure ◽  
Ventilation Technique ◽  
Window Position ◽  
The One ◽  
Flow Velocities

The wind catcher or wind tower is a natural ventilation technique that has been employed in the Middle East region and still until nowadays. The present paper aims to study the effect of the one-sided position of a wind catcher device against the ventilated space or building geometry and its natural ventilation performance. Four models based on the traditional design of a one-sided wind catcher are studied and compared. The study is achieved under the climatic conditions of the South-west of Algeria (arid region). The obtained results showed that the front and Takhtabush’s models were able to create the maximum pressure difference (ΔP) between the windward and leeward of the tower-house system. Internal airflow velocities increased with the increase of wind speed in all studied models. For example, at Vwind = 2 m/s, the internal flow velocities were 1.7, 1.8, 1.3, and 2.5 m/s for model 1, 2, 3, and 4, respectively. However, at Vwind = 6 m/s, the internal flow velocities were 5.6, 5.5, 2.5, and 7 m/s for model 1, 2, 3, and 4, respectively. The higher internal airflow velocities are given by Takhtabush, traditional, front and middle tower models, respectively, with a reduction rate between the tower outlet and occupied space by 72, 42, 36, and 33% for the middle tower, Takhtabush, traditional tower, and the front model tower, respectively. This reduction is due to the due to internal flow resistance. The third part of the study investigates the effect of window (exist opening) position on the opposite wall. The upper, middle and lower window positions are studied and compared. The air stagnation or recirculation zone inside the ventilated space reduced from 55% with the lower window to 46% for the middle window and reached 35% for the upper window position. The Front and Takhtabush models for the one-sided wind catcher with an upper window position are highly recommended for the wind-driven natural ventilation in residential houses that are located in arid regions.

scholarly journals Review of Intelligent Control Systems for Natural Ventilation as Passive Cooling Strategy for UK Buildings and Similar Climatic Conditions

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4388
Author(s):  
Esmail Mahmoudi Saber ◽  
Issa Chaer ◽  
Aaron Gillich ◽  
Bukola Grace Ekpeti
Keyword(s):  
Control Systems ◽  
Natural Ventilation ◽  
Energy Use ◽  
Integrated Control ◽  
Climatic Conditions ◽  
Effective Control ◽  
Practical Implementation ◽  
Optimal Output ◽  
Heating And Cooling ◽  
Building Cooling

Natural ventilation is gaining more attention from architects and engineers as an alternative way of cooling and ventilating indoor spaces. Based on building types, it could save between 13 and 40% of the building cooling energy use. However, this needs to be implemented and operated with a well-designed and integrated control system to avoid triggering discomfort for occupants. This paper seeks to review, discuss, and contribute to existing knowledge on the application of control systems and optimisation theories of naturally ventilated buildings to produce the best performance. The study finally presents an outstanding theoretical context and practical implementation for researchers seeking to explore the use of intelligent controls for optimal output in the pursuit to help solve intricate control problems in the building industry and suggests advanced control systems such as fuzzy logic control as an effective control strategy for an integrated control of ventilation, heating and cooling systems.

scholarly journals Indoor Climate Performance in a Renovated School Building

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2827
Author(s):  
Pavla Mocová ◽  
Jitka Mohelníková
Keyword(s):  
Indoor Environment ◽  
Natural Ventilation ◽  
Carbon Dioxide Concentration ◽  
Heating System ◽  
Climatic Conditions ◽  
School Building ◽  
Ventilation Strategy ◽  
Indoor Climate ◽  
Microbiological Testing ◽  
Indoor Comfort

Indoor climate comfort is important for school buildings. Nowadays, this is a topical problem, especially in renovated buildings. Poorly ventilated school classrooms create improper conditions for classrooms. A post-occupancy study was performed in a school building in temperate climatic conditions. The evaluation was based on the results of long-term monitoring of the natural ventilation strategy and measurements of the carbon dioxide concentration in the school classroom’s indoor environment. The monitoring was carried out in an old school building that was constructed in the 1970s and compared to testing carried out in the same school classroom after the building was renovated in 2016. Surprisingly, the renovated classroom had a significantly higher concentration of CO2. It was found that this was due to the regulation of the heating system and the new airtight windows. The occupants of the renovated classroom have a maintained thermal comfort, but natural ventilation is rather neglected. A controlled ventilation strategy and installation of heat recovery units are recommended to solve these problems with the classroom’s indoor environment. Microbiological testing of the surfaces in school classrooms also shows the importance of fresh air and solar radiation access for indoor comfort.

Untangling discrimination in the private sector workplace in South Africa: Paving the way for Black African women progression to managerial positions

2021 ◽  
pp. 135822912199056
Author(s):  
Motlhatlego Dennis Matotoka ◽  
Kolawole Olusola Odeku
Keyword(s):  
South Africa ◽  
Black Women ◽  
Private Sector ◽  
South African ◽  
African Women ◽  
The South ◽  
Quota System ◽  
Black African ◽  
Managerial Positions ◽  
Action Measures

Black African women in South Africa are poorly represented at managerial levels in the South African private sector since the advent of democracy. Their exclusion at these occupational levels persists despite the Employment Equity Act 55 of 1998 (EEA) requiring that the private sector must ensure that all occupational levels are equitably represented and reflects the demographics of South Africa. The South African private sector demonstrates its lack of commitment to proliferating black African women into managerial positions by deliberately engaging in race-based recruitment and failing to develop and promote suitably qualified women into managerial positions. As such, the private sector is failing to create upward mobility for black African women to break the glass ceiling. The EEA requires the private sector to apply affirmative action measures in order to achieve equity in the workplace. It is submitted that since 1998, the private sector has been provided with an opportunity to set it own targets in order to achieve equity. However, 22 years later, black African women are still excluded in key managerial positions. However, the EEA does not specifically impose penalties if the private sector fails to achieve the set targets.This approach has failed to increase the representation of black women in managerial positions. However, the EEA does not specifically impose penalties if the private sector fails to achieve the set targets. Whilst this approach seeks to afford the private sector importunity to set its own target, this approach has failed to increase the representation of black women in managerial positions. Employing black African women in managerial levels enhances their skills and increases their prospects to promotions and assuming further leadership roles in the private sector. This paper seeks to show that the progression of black African women requires South Africa to adopt a quota system without flexibility that will result in the private sector being compelled to appoint suitably qualified black African women in managerial levels.

Acoustic Performance of Louvred Facades for Brisbane Domestic Airport: An Integrated Approach

2012 ◽  
Author(s):  
Frank Butera ◽  
Keith Hewett
Keyword(s):  
Natural Ventilation ◽  
Transmission Loss ◽  
Internal Noise ◽  
Building Design ◽  
Integrated Approach ◽  
External Noise ◽  
Climatic Conditions ◽  
Sustainable Building ◽  
Heating And Cooling ◽  
Airport Terminals

Maximising cross ventilation is a low energy method of naturally ventilating and providing heating and cooling to deep plan spaces. Significant reduction in the emission of greenhouse gases can be achieved through minimising the use of mechanical systems in regions with climatic conditions that support the use of natural ventilation. Arup has provided input into the design of a louvered facade for the control of external noise for Brisbane Domestic Airport. A full scale prototype facade was constructed and noise transmission loss measurements were undertaken. The results indicate that significant noise reduction can be achieved to enable compliance with the internal noise limits for airport terminals, whilst using natural ventilation. The findings from this research will directly benefit building designers and innovators in the pursuit of achieving sustainable building design.

scholarly journals The Impact of Aspect Ratio on External Heat Gain of Multi-storey Office Buildings in Jakarta

2018 ◽  
Vol 16 (1) ◽  
pp. 24-31
Author(s):  
Wasiska Iyati ◽  
◽  
Eryani Nurma Yulita ◽  
Jusuf Thojib ◽  
Heru Sufianto ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Building Design ◽  
Climatic Conditions ◽  
Building Envelope ◽  
External Heat ◽  
Office Buildings ◽  
Office Building ◽  
Cooling Load ◽  
Heat Gain ◽  
The Impact

The narrow land in big cities such as Jakarta, increases the amount of high rise building, especially multi-storey office building. Office building consumes much energy to provide air conditioning to meet the thermal comfort inside the building. On the other hand, the building shape, building envelope, and building orientation to the sun's position are the main factors in building design aspects that affect the amount of cooling load. This study aims to investigate the impact of the aspect ratio or the ratio of the longer dimension of an oblong plan to the shorter, on external heat gain of multi-storey office building. Variables examined include the transparent and solid area of building envelope, the total area of the surface of the building envelope in any orientation, and the volume of the building, as well as the influence of those proportion on the external heat gain. This study uses mathematical calculations to predict the cooling load of the building, particularly external heat gain through the walls, roof and glass, as well as comparative analysis of models studied. The study also aims to generate the design criteria of building form and proportion of multi-storey office buildings envelope with lower external heat gain. In Jakarta climatic conditions, the result on rectangular building plan with aspect ratio of 1 to 4 shows that the external heat gain did not differ significantly, and the smallest heat gain is found on the aspect ratio of 1.8. Results also showed that the greater aspect ratio, the greater reduction of external heat gain obtained by changing the orientation of the longest side facing east-west into the north-south, about 2.79% up to 42.14% on the aspect ratio of 1.1 to 4. In addition, it is known that in same building volume, changing the number of floors from 10 to 50 can improve the external heat gain almost twice.

scholarly journals Green Banking Trends: Customer Knowledge and Awareness in India

2020 ◽  
Vol 8 (1) ◽  
pp. 54-60
Author(s):  
V Chitra ◽  
R Gokilavani
Keyword(s):  
Private Sector ◽  
Financial Institution ◽  
Private Investment ◽  
Clean Energy ◽  
Climatic Conditions ◽  
Low Carbon ◽  
Low Carbon Economy ◽  
Energy Technologies ◽  
Private Sector Investment ◽  
Consumer Markets

Global warming is increasing; therefore, Change is the law of nature. The changes like the environmental and climatic conditions, are one of the most complicated issues faced by the growing society. The survival of the fittest contributes to the idea of adaptation to the changes in society. Today’s business is all about being green, and companies use this as a key strategy to expand its market and impact society. Even the top companies like Amazon to apple are moving in a great way towards green. The economic development lies in the palms of the banks being the financial organizations.Green banking means a financial institution, typically public or quasi-public, that uses innovative financing techniques and market development tools in partnership with the private sector to accelerate deployment of clean energy technologies. Green banks use public funds to leverage private investment in clean energy technologies that, despite being commercially viable, have struggled to establish a widespread presence in consumer markets. Green banks seek to reduce energy costs for ratepayers, stimulate private sector investment and economic activity, and expedite the transition to a low-carbon economy. Adoption of green banking practices will not only be useful for the environment but also benefit in greater operational efficiencies, minimum errors and frauds, and cost reductions in banking activities. The present paper aims to highlightIndian initiatives and adoption by various banks towards green banking in India. Further, an attempt has been made to highlight the major benefits, confronting challenges of Green Banking.

scholarly journals Performance of soy cultivars in the south of Minas Gerais State, Brazil

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
Elaine Cristina Batista ◽  
José Luiz De Andrade Rezende Pereira ◽  
Adriano Teodoro Bruzi ◽  
Everton Vinucius Zambiazzi ◽  
Karina Barroso Silva
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Environmental Variables ◽  
Block Design ◽  
Minas Gerais ◽  
Climatic Conditions ◽  
The South ◽  
Randomized Block Design ◽  
Minas Gerais State

Cultivar evaluation is one of the basic steps recommended for a given region, since the best adapted cultivars have higher yields, and success in this parameter is based on the genotype of the material and its interaction with the environmental variables. The aim of this study was to evaluate thebehavior of 23 soy cultivars in the soil-climatic conditions of the south region of Minas Gerais State (MG), Brazil, in the municipality of Inconfidentes. The evaluated traits were grain yield, plant height, height of insertion of the first legume and lodging. The experiments were conducted on the 2013/2014 and 2014/2015 harvests, adopting a randomized block design with three replicates and 23 treatments, which were constituted by the following cultivars: FAVORITA RR, BRS MG 760SRR, NA 5909 RG, NA 7200 RR, CD 2630, CD 250, NA 7620 RR, CD 2737, TMG 123, V-MAX RR, P 98Y11 RR, NS 7100 RR, BMX Potencia, Anta 82 RR, CD 237, V-TOP, TMG 1176 RR, TMG 1174 RR, TMG 1179 RR, TMG 1181 RR, BMX Força, Monsoy 7211 RR and BRS MG 780 RR. Of the studied cultivars, those that most stood out for the traits evaluated in the conditions of Inconfidentes (MG) were TMG 1179 RR (48.6 bags of 60 kg ha-1), NA 7200 RR (45.6 bags), CD 2737 (41.1 bags), CD 237 (41 bags) and BRS MG 760 SRR (40.6 bags), all of which displayed satisfactory conditions for mechanical harvesting, demonstrating the good performance of the crop in the south region of Minas Gerais State.

scholarly journals A pilot survey of the current scope of the practice of South African physiotherapists in the intensive care units

2005 ◽  
Vol 61 (1) ◽  
Author(s):  
H. Van Aswegen ◽  
J. Patterson
Keyword(s):  
Intensive Care ◽  
Private Sector ◽  
South African ◽  
Intensive Care Units ◽  
The South ◽  
Pilot Survey ◽  
Private Practitioners ◽  
European Survey ◽  
The Government

Objective: A pilot study was conducted to determine the currentscope of practice of South African physiotherapists working in intensive care units in the government and the private sectors. These findings were compared to the findings from a European survey with regard to the role of the physiotherapist in European intensive care units.Methodology: Ninety questionnaires were distributed nationwide to secondary and tertiary government hospitals as well as to private practitioners involved in cardiopulmonary physiotherapy. The private practitioners included in this survey were listed in the Private Practitioners Association Official Members Directory. Junior and senior physiotherapists working in the intensive care units of their respective hospitals participated in completing the questionnaire. Comparisons between government and private sector data and between the South African survey and the European survey were carried out using the 2test for non-parametric data. A p-value of less than 0.05 was considered to be statistically significant.Results: Fifty-four questionnaires were analyzed and represented 60% of questionnaires sent out. Respondents to the South African survey reported 28% percent of all ICUs had between 9 - 12 beds; 83% physiotherapists indicated the availability of an on-call service during the night and 96% physiotherapists had a weekend physiotherapy service. Ninety-two percent of physiotherapists working in the government sector supervised students compared to 44% of physiotherapists in the private sector. Between 9% and 27% of physiotherapists in government and private hospitalsactively participated in research in ICU. There were no statistically significant differences in the use of respiratory physiotherapy, mobilization and positioning between respondents to the European survey and those of the South African survey respectively.Conclusion: The response rate to this questionnaire was good. It was evident from this pilot survey that the scope of practice of physiotherapy in ICU didn’t differ significantly between the government and private sector in South Africa. The role of the intensive care physiotherapist in South Africa was similar to that of the European physiotherapist  working in ICU.

Smoke Flow Control in Tunnels Using Natural Ventilation

2018 ◽  
Author(s):  
Mark P. Colino ◽  
Elena B. Rosenstein
Keyword(s):  
Natural Ventilation ◽  
Smoke Control ◽  
Smoke Movement ◽  
Design Elements ◽  
Industry Standards ◽  
Emergency Ventilation ◽  
Design Requirements ◽  
Smoke Control System ◽  
Ventilation Systems

This paper provides an overview of the design of natural ventilation systems to control smoke movement in rail tunnels. The paper discusses the current industry standards and design requirements for tunnel emergency ventilation systems, and then addresses the various technical elements that are used to design such systems. These technical elements include parameters in the direct control of the designer, as well as those that are beyond the control of the designer. The paper also presents a case study where various physical design elements are utilized to create a working natural ventilation smoke control system for a short rail tunnel.

Sign in / Sign up

Export Citation Format

Share Document