scholarly journals Thermal comfort optimization through bioclimatic design in Mediterranean cities

F1000Research ◽  
2021 ◽  
Vol 10 ◽  
pp. 1047
Author(s):  
Nermine Hany ◽  
Hala Alaa

Background: Bioclimatic design is an approach based on local climate which improves thermal qualities and indoor comfort. Buildings follow this process to minimize negative effects on the environment. However, this approach is still not suitable in developed countries. This study aims to investigate Mediterranean local bioclimatic strategies’ impact on thermal comfort efficiency in housing, by examining architectural elements and treatments. Methods: We adopted a descriptive, analytical, and comparative methodology, complemented with a software simulation, within a qualitative and quantitative approach. Investigation and methodological tools were based on technical information including plans, elevations, photos, and documentation. The approach consisted of multiple stages: a literature review interpreting the concept of bioclimatic design, as well as thermal comfort variables and common Mediterranean building features. Moreover, the paper showcases three examples of successful Mediterranean passive houses. Furthermore, the paper presents a case- studyhouse in Alex West, Alexandria, designed in the Mediterranean Revival style. Results: The results showed that the most influencing building features on thermal comfort were the low-pitched roofs and the top chimney, which achieved 12.6% and 5% improvement in the summer and 13% and 6.8% in winter, respectively. The pergola and porch elements barely had an effect when placed on the northern façade. However, on the southern façade, a positive contribution in the summer by 1.4% and 3.4% respectively were reported, but a slight negative impact in winter by 0.5% and 2% respectively. Conclusions:  We examined the impact of common Mediterranean building features , and compared thermal comfort results between case-study houses. Features focusing on passive design for cooling rather than heating, allowing wind flow for maximized natural ventilation, using ventilated pitched roof spaces, using sun shading elements in the proper facades and angles, help passive thermal regulation. The study proposes recommendations for optimizing thermal comfort in residential buildings in Alexandria, Egypt.

Land ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 17
Author(s):  
Wojciech Bal ◽  
Magdalena Czalczynska-Podolska

The coastline of Western Pomerania has natural and cultural assets that have promoted the development of tourism, but also require additional measures to ensure the traditional features and characteristics are protected. This is to ensure that new developments conform to a more uniform set of spatial structures which are in line with the original culture. Today, seaside resorts are characterized by a rapid increase in development with a clear trend towards non-physiognomic architectural forms which continually expand and encroach on land closer to the coastline. This results in a blurring of the original concepts that characterized the founding seaside resort. This study evaluates 11 development projects (including a range of hotels, luxury residential buildings and hotel suites) built in 2009–2020 in the coastal area of Western Pomerania. An assessment of architecture-and-landscape integration for each development project was made, using four groups of evaluation criteria: aesthetic, socio-cultural, functional and locational factors. The study methodology included a historical and interpretative study (iconology, iconography, historiography) and an examination of architecture-and-landscape integration using a pre-prepared evaluation form. Each criterion was first assessed using both field surveys and desk research (including the analysis of construction plans and developer materials), and then compared with the original, traditional qualities of the town. This study demonstrates that it is possible to clearly identify the potential negative impact of tourism development on the cultural landscape of seaside resorts, and provides recommendations for future shaping, management and conservation of the landscape.


2018 ◽  
Vol 68 (3) ◽  
pp. 311-335
Author(s):  
Abubakr Saeed ◽  
Yuhua Ding ◽  
Shawkat Hammoudeh ◽  
Ishtiaq Ahmad

This study examines the relationship between terrorism and economic openness that takes into account both the number and intensity of terrorist incidents and the impact of government military expenditures on trade-GDP and foreign direct investment-GDP ratios for both developed and developing countries. It uses the dynamic GMM method to account for endogeneity in the variables. Deaths caused by terrorism have a significant negative impact on FDI flows, and the number of terrorist attacks is also found to be significant in hampering the countries’ ability to trade with other nations. The study also demonstrates that the developing countries exhibit almost similar results to our main analysis. The developed countries exhibit a negative impact of terrorism, but the regression results are not significant.


Author(s):  
Kaleb Pattawi ◽  
Prateek Munankarmi ◽  
Michael Blonsky ◽  
Jeff Maguire ◽  
Sivasathya Pradha Balamurugan ◽  
...  

Abstract Residential buildings, accounting for 37% of the total electricity consumption in the United States, are suitable for demand response (DR) programs to support effective and economical operation of the power system. A home energy management system (HEMS) enables residential buildings to participate in such programs, but it is also important for HEMS to account for occupant preferences to ensure occupant satisfaction. For example, people who prefer a higher thermal comfort level are likely to consume more energy. In this study, we used foresee™, a HEMS developed by the National Renewable Energy Lab (NREL), to perform a sensitivity analysis of occupant preferences with the following objectives: minimize utility cost, minimize carbon footprint, and maximize thermal comfort. To incorporate the preferences into the HEMS, the SMARTER method was used to derive a set of weighting factors for each objective. We performed week-long building energy simulations using a model of a home in Fort Collins, Colorado, where there is mandatory time-of-use electricity rate structure. The foresee™ HEMS was used to control the home with six different sets of occupant preferences. The study shows that occupant preferences can have a significant impact on energy consumption and is important to consider when modeling residential buildings. Results show that the HEMS could achieve energy reduction ranging from 3% to 21%, cost savings ranging from 5% to 24%, and carbon emission reduction ranging from 3% to 21%, while also maintaining a low thermal discomfort level ranging from 0.78 K-hour to 6.47 K-hour in a one-week period during winter. These outcomes quantify the impact of varying occupant preferences and will be useful in controlling the electrical grid and developing HEMS solutions.


2015 ◽  
pp. 1-13
Author(s):  
Gil Avnimelech ◽  
Yaron Zelekha

There is a consensus that corruption may result in high societal costs. A growing body of research reveals the negative effects of corruption on a variety of economic indicators. This chapter presents a literature review on the impact of corruption on entrepreneurship. It allows us to suggest that one of the transition channels through which corruption has impacted growth is entrepreneurship. The main channels in which corruption impacts entrepreneurship is through reduced incentives for entrepreneurial activity and reduced trust within the system. The authors present evidence that the negative impact of an incremental increase in the level of corruption on entrepreneurship is more harmful in developed countries than in developing countries. Thus, they stress the need for more research in this area with the aim of establishing appropriate frameworks for the fight of corruption in both developing and developed countries and suggest significant gains from anti-corruption efforts, especially in developed countries.


2020 ◽  
Vol 13 (2) ◽  
pp. 26
Author(s):  
Ivana Brkić ◽  
Nikola Gradojević ◽  
Svetlana Ignjatijević

This paper analyzes the impact of economic freedom along with traditional economic factors on economic growth for a panel of European countries. The growth of the gross domestic product was observed over a twenty-year time period on a sample of 43 developing and developed countries. Based on a robust dynamic panel setting, we conclude that increases in economic freedom as expressed by the Index of Economic Freedom/Heritage Foundation (but not its levels) are related to economic growth. The EU membership status either had no effect or it curbed the effect of the economic freedom on growth. We also find that the subprime economic crisis of 2008–2009 exerted a negative impact on the growth of European economies.


2011 ◽  
Vol 20 (1) ◽  
pp. 101-111 ◽  
Author(s):  
Baizhan Li ◽  
Wei Yu ◽  
Meng Liu ◽  
Nan Li

Yangtze River Valley is situated within the Hot Summer and Cold Winter zone, and residents in this region of China would require HVAC system to alleviate thermal comfort conditions, although this is tempered by the Design Code (DBJ50-071-2007) for energy efficiency. A 1-year survey of about 200 residential homes was carried out in eight cities covering the breadth of the region. The acceptable temperature range for the residents in this area was 16.3—28.1°C and the thermal neutral temperature was found to be 27.6°C in summers and 17.5°C in winters. People in different area can vary in their adaptability and comfortableness. Therefore, there is a need to investigate the national comfort parameter introduced in the Code for Design of Heating and Ventilation and Air Conditioning (GB50019-2003). The results found that if air-conditioning system was set to 27.5°C instead of 26°C as required by GBJ19-87: Design Standard of Heating and Ventilation and Air Conditioning, a 16.5% saving of energy consumption could be achieved. The findings demonstrated the role of natural ventilation in the expansion of the thermal comfort zone for the residents, especially during the summer seasons. A climatic adaptability model has been established by this study to contribute to the passive climatic design strategies for a better economic and energy efficiency of buildings.


Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1118
Author(s):  
Vladimír Šagát ◽  
Ivan Ružek ◽  
Karel Šilhán ◽  
Pavel Beracko

Picea abies L. Karst is undeniably one of the most important tree species growing in Slovakia. In addition to natural mountain spruce forests, monocultures planted in lower areas are also quite common. In this article, we analyze the climate–growth response differences between these two types of spruce stands in the context of local climate change consequences. The study area representing natural mountain spruce forests is located under Osobitá Mt. (Tatra Mountains, Slovakia), while the analyzed low-lying planted monoculture is situated near Biely kríž (Malé Karpaty Mountains, Slovakia). Temporal variation of the dendroclimatological relationships was expressed by the running Spearman correlation coefficient during the observed period 1961–2018. The results showed crucial differences in the dendroclimatological relationships between the selected study areas. For the natural mountain spruce stand, consistent, weak, and positive correlations to the temperature variables were typical, with negative relationships to precipitation during the growing season. In this case, the negative impact of a recent temperature rise was limited. In contrast, the monoculture reacted to the temperature variation during the growing season with fluctuations, while in the case of precipitation, almost no dependence was found. Such incoherency may be a consequence of worsened health conditions, as well as insufficient resiliency to climate-driven stress. The importance of this paper is in its wide applicability, mainly in forestry.


2020 ◽  
Vol 3 (1) ◽  
pp. p1
Author(s):  
Jad Hammoud ◽  
Elise Abi Rached

The increasing of energy demands has considerably increased the requirements for new and traditional buildings in different climate zones. Unprecedented heat waves have increased climate temperature, in particular, in moderate climate zones such as Lebanon. In Beirut, only the residential sector consumes 50% of total electricity consumption. HVAC (Heating, Ventilation and Air conditioning) systems are used to reach acceptable thermal comfort levels in the new residential buildings. In case of the traditional bourgeoisie houses in Beirut, there are no discussions about the use of HVAC systems to achieve the required thermal comfort level. Thus, to reach an acceptable thermal comfort level, these houses which already contain natural ventilation system shall adapt the modern thermal comfort requirements and thermal comfort strategies and technologies where their architectural features and existing materials condition the available solutions. In order to identify the best options within the possible intervention lines (envelopes, passive strategies, equipment, renewable energy systems), it is necessary to perceive the real performance of this type of houses. In this context, the article presents the results of the study of thermal performance and comfort in a three case studies located in Beirut. Detailed field data records collected are analyzed, with a view to identify the indoor thermal environment with respect to outdoor thermal environment in different seasons. Monitoring also included measurement of hygrothermal parameters and surveys of occupant thermal sensation.


2019 ◽  
Vol 2 (1) ◽  
pp. 39
Author(s):  
Mulyaningsih Mulyaningsih

Indonesia as the country with the opportunity cost of investment and the highest corruption in ASIA business caused a cultural and population changes which is affect to family structure in the development business and state. Based on those conditions, Indonesia must change fast become count country in ASIA to build character through local knowledge possessed a vast country and large The shift in the pattern of the surviving members of regional communities is an indicator of impending shocks to the mindset, ways of thinking, feeling and reacting based on the environment and the condition of the demands of the behavior of the members together are embraced and accepted by the organization to act and solve problems, adapt and unites members of the organization through a shift in values, norms and cultural rules significantly (mean) the impact of the shock towards the life of the nation both by employers and stakeholders organizations in Indonesia. ASIA development of the business sector in the 21st century emphasizes ethical investment. Ethical investments In the 21st century, supporting ethical organization, including in developed countries the problem of ethics and organizational behavior into consideration when deciding policies and financial. The idea of ethical investment had various depend on each country, and company cultural perception. The application of ethical investment strategies of individual, non-profit organizations, governments and companies to attract potential investors, in the hope that the fund is managed in a way that does not have a negative impact on society, including Indonesian society. The influence of cultural, social and geographical had very strong impact to employers and stakeholders behavior. The diversity behavior is fundamental basic considered in fundamentals treatment will support the success of Indonesia development over this years. It will deal with the honesty, integrity in the right employees, strong leadership and support for ethnic behavior. Those conditions would cause a shock to the human resources therefore need nation quality recovery in national policies circle in order to determine direction of attitudes change and nation view as an interactive consequence in organizational culture characteristic which is owned Indonesian HR should be able to function as a tool to support the implementation of the development progress through employee competence and leadership. The Indonesian efforts to increase capacity and competence of the Human Resources (HR) with respect to resilience in the face of 2020, namely the implementation of a characteristic of organization culture that will affect the way work is done and how employees behave based on the philosophy of Pancasila and the results of research in the form of build character first through local wisdom in the sunda level; like "sareundeuk saigel sabobot sapihanean, penance grindstones penance foster compassion, silih simbeuh mean to share (Sharing). (Mulyaningsih, Japan Meijo 2015) The paradigm of thought in enhancing the competence of behaving for Human Resources in Indonesia by sharing (sharing) the future is not only to be able to survive in the economic crisis but as a cornerstone in carrying out the work or the owner (owner) as well as the investors who use ethical investment as competence businesses, professional stakeholders to support the business sector and the advantages of statehood in Indonesia capable of competitiveness in 2020.


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