Thermal comfort & Energy efficiency in hot climates Research Papers

System on programmable chip for the performance estimation of loom machine, which calculates the efficiency and meter count for weaved cloth automatically. Also it calculates the efficiency of loom machine. Previously the same was done... more

Earth pipe cooling technology is a building design approach for cooling a room in a passive process without using any customary units. It can reduce energy consumption of the buildings for hot and humid subtropical zones. This chapter... more

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The tropics is characterized with high temperature but in recent time with the advent of global warming that had shot the world temperature so high ,cascaded transformers failure is imminent due to excessive heat stored in the windings... more

One of the most important properties of a passively designed building is to provide thermal comfort conditions for users with decreasing energy consumption. External walls conduct heat from outdoor to indoor affecting thermal comfort.... more

Climate change was simulated using the HADCM3 general circulation model and was downscaled using the LARS-WG downscaling model. After downscaling and uncertainty analysis, climatic parameters were generated until year 2090, assuming three... more

""http://www.woodheadpublishing.com/en/book.aspx?bookID=2458... more

Footwear have been evaluated mostly using commercially available products, while some researchers have used custom shoes. Hence, the understanding of the effects of various parameters of a shoe is quite limited. The footbed simulator... more

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A legacy after the success of the Passive and Low Energy Architecture conference organised in Edinburg, Scotland in June 2017.

This paper provides an overview of the results of a project that explores strategies for improving the thermal performance of the New South Wales Demountable Classroom in the diverse climates that occur across New South Wales, Australia.... more

The aim of this study is to get the most optimal energy efficient heating and cooling material combinations that would result to an energy saving buildings. The regulatory requirement limits of thermal characteristics of residential... more

Rational use of energy and power is a key to the economic development of human society and to achieve sustainable environment. Power and energy have been the major contributors to the global warming and researchers around the world have... more

Daisy world is a simple planetary model designed to show the effects of coupled climate-vegetation dynamics. In this simple model, Daisy world is a cloudless planet with a negligible atmospheric greenhouse, its ground is grey and it is... more

This paper presents the results of a thermal comfort evaluation of an underground metro station located in a composite climate zone of India (New Delhi). The evaluation comprised real-time monitoring of indoor thermal comfort during... more

This paper presents the results of a thermal comfort evaluation of an underground metro station located in a composite climate zone of India (New Delhi). The evaluation comprised real-time monitoring of indoor thermal comfort during winter and summer seasons accompanied by subjective thermal comfort surveys. This study extends the existing field study protocols to transport buildings, which are characterised by dynamic passenger flow. Parameters such as dry bulb temperature (Ti), globe temperature (Tg), relative humidity (RH) and air velocity (Va) were measured using a thermal comfort monitoring system. In addition, spatial variation of Ti, Tg and RH were monitored using lab-assembled Arduino kits. Subjective surveys comprised of transverse responses collected from 360 users and 360 sequential thermal experience responses collected form 60 users. The subjective responses were collected separately for boarding and alighting sequences using an android-based application developed by the team. Transient thermal comfort was estimated using Relative Warmth Index (RWI). A comparative analysis of mean RWI indicates a gradual and uniform change along the alighting sequence of passenger flow. However, the variation of mean RWI is non-uniform and undulated along the boarding sequence. RWI varied from 0.26 at platform to 0.45 at the walkway along the alighting sequence. It varied from 0.3 at concourse to 0.51 at the ticket lobby along the boarding sequence. The neutral temperature (Ti) obtained through thermal sensation vote (TSV) is 30.3°C. The variation in TSV between alighting and boarding passengers were found to be statistically significant at platform, concourse and walkway. A strong positive correlation was obtained between TSV alighting and RWI (R 2 =0.52) as well as TSV boarding and RWI (R 2 =0.53). An RWI value of 0.14 corresponded with mean neutral TSV for the alighting sequence while it was 0.33 for the boarding sequence. The passengers exhibited higher level of tolerance to heat discomfort than that predicted by RWI. Acceptable thermal limits along the alighting and boarding sequence of the metro station are presented.

Se presenta un modelo de documento expedido por el contratante, haciendo constar que -despues de un lapso de 6 meses- no se han manifestado desperfectos ("vicios ocultos) en las obras o productos terminados y entregados por el... more

"Networks are mathematically directed (in practical applications also undirected) graphs and a graph is a one-dimensional abstract complex, i.e., a topological space. Network theory focuses on various topological structures and... more

"Networks are mathematically directed (in practical applications also undirected) graphs and a graph is a one-dimensional abstract complex, i.e., a topological space. Network theory focuses on various topological structures and properties, dynamic properties, and functionality-topology relationship, etc. There are some common mathematical foundations, theories and methodology for network analysis, in which graph theory, statistics, and operational research, etc., are the fundamental sciences of network analysis. Various emerging biological networks, at both micro- and macro- levels, will provide numerous sources for the development of general network theory and methodology and also facilitate the development of theory and methodology of biological networks.

Biological network analysis is a fast moving science. Many core scientific issues, for example, ecological structure, co-evolution, co-extinction and biodiversity conservation in ecology, and cancer development and metabolic regulation in health science, etc., are expected to be addressed by network approaches and network analysis. Network analysis is becoming the core methodology to treat complex biological systems. As the fast development of this area, more and more papers on biological networks are published.

At present explosive numbers of quality papers on biological networks are being published each year. The initiation of the journal, Network Biology, will provide a public and unified platform for the publication of these studies. From this integrated and unique journal, researchers, university teachers and students will thoroughly have an in-depth and complete insight on knowledge, methodology and recent advances of biological networks.

In the view of system dynamics, biological networks are always self-organized systems with emergent, autonomous and adaptive properties. Their dynamics can be represented by agent-based modeling, individual-based modeling and some other methodologies like neural network modeling. Therefore, agent-based modeling, individual-based modeling, self-organization of biological systems, and neural network modeling, etc., fall into the aims and scope of the journal, Network Biology.

The NETWORK BIOLOGY (ISSN 2220-8879) is an open access, peer-reviewed online journal that considers scientific articles in all different areas of network biology. It is the transactions of the International Society of Network Biology.It dedicates to the latest advances in network biology. The goal of this journal is to keep a record of the state-of-the-art research and promote the research work in these fast moving areas. The topics to be covered by Network Biology include, but are not limited to:

•Theories, algorithms and programs of network analysis
•Innovations and applications of biological networks
•Dynamics, optimization and control of biological networks
•Ecological networks, food webs and natural equilibrium
•Co-evolution, co-extinction, biodiversity conservation
•Metabolic networks, protein-protein interaction networks, biochemical reaction networks, gene networks, transcriptional regulatory networks, cell cycle networks, phylogenetic networks, network motifs
•Physiological networks
•Network regulation of metabolic processes, human diseases and ecological systems
•Social networks, epidemiological networks
•System complexity, self-organized systems, emergence of biological systems, agent-based modeling, individual-based modeling, neural network modeling, and other network-based modeling, etc.
We are also interested in short communications that clearly address a specific issue or completely present a new ecological network, food web, or metabolic or gene network, etc.

Authors can submit their works to the email box of this journal, [email protected]. All manuscripts submitted to this journal must be previously unpublished and may not be considered for publication elsewhere at any time during review period of this journal. Authors are asked to read Author Guidelines before submitting manuscripts.

In addition to free submissions from authors around the world, special issues are also accepted. The organizer of a special issue can collect submissions (yielded from a research project, a research group, etc.) on a specific research topic, or submissions of a scientific conference for publication of special issue.

Network Biology
ISSN 2220-8879
URL: http://www.iaees.org/publications/journals/nb/online-version.asp
RSS feed: http://www.iaees.org/publications/journals/nb/rss.xml
E-mail: [email protected]
Editor-in-Chief: WenJun Zhang"

Sustainable urban development, especially in economically disadvantaged regions, has increasingly become a major strategic priority. New settlements and urban regeneration programs have to improve the quality of social life, promote... more

This paper presents a numerical study on the temperature field inside a passenger’s compartment of a Proton Wira saloon car using computational fluid dynamics (CFD) method. The main goal is to investigate the effects of different glazing... more

Urban parks have complex surface structure that produces an environment with specific microclimatic qualities. These qualities affect the balance of energy of the human body and are applicable to an individual's thermal perception. They... more

Today’s residential construction industry is capable of producing exceptionally high performing houses that far exceed compliance with local building codes. We feel that setting a target of Net-Zero Energy (NZE) is feasible in the US... more

Air India Building is an icon located at Nariman Point in the CBD zone. This structure was built in the late 1960’s for the Air India company and formed its headquarters until recently when the company shifted its main office to Delhi.... more

BITENCOURT, Fábio. Arquitetura do ambiente de Nascer: reflexões e recomendações projetuais de arquitetura e conforto ambiental. Rio de Janeiro: Rio Books, 2008, 129 p.; il. Este livro traz como proposta principal apresentar reflexões e... more

Building sector is responsible for at least 40% of energy use in most countries worldwide around 33% of its energy is known to be used by HVAC systems in buildings. Tall buildings tend to have an increasing appetite for energy due to deep... more

Este artigo descreve um programa computacional desenvolvido a partir da proposta de procedimentos para cálculo das propriedades térmicas de elementos e componentes de edificações . O trabalho teve origem com o desenvolvimento de uma... more

The terms “bioclimatic design” and “design for climate” became current in the literature of architectural design in the 1950s. It gained currency in academic research and architectural and building practices in the 1970s, as fundamental... more

The objective of the thesis is the development of socially, economically and environmentally viable proposals that will improve the thermal performance of the NSW Demountable Classroom and the thermal comfort of the people and communities... more

A B S T R A C T Starting from year 1995, 50 thousand low-cost housing units were been proposed to be built In Egypt by 2020 to overcome housing problems, only 60% have been already implemented. Three prototypes are amongst the most... more

El sistema de emisión de recibos de pago se diseñó, probó, validó y aplicó por Visión EnerGtiK S. de R . L. (VEN) MI para la ejecución del proyecto de impermeabilizar y amortiguar transferencia de calor de los techos de dos centros de... more

Qu'est ce que les matériaux à changement de phases (fonctionnements, applications...)

The use of a latent heat storage system using phase change materials (PCMs) is an effective way of storing thermal energy and has the advantages of high-energy storage density and the isothermal nature of the storage process. In this... more

The combined cycle gas turbine integrates the Brayton cycle as topping cycle and the steam turbine Rankine cycle as bottoming cycle in order to achieve higher thermal efficiency and proper utilization of energy by minimizing the energy... more

This paper evaluates using shading devices with naturally ventilated walls in hotel buildings in Greater Cairo as a passive technique to lower cooling loads in cooling seasons. CFD simulations were done using DesignBuilder to compare... more

Studio di tesi in Architettura Magistrale con oggetto la riqualifica energetica di edifici di edilizia economica popolare degli anni '80-'90, con sistemi di controllo climatico tradizionali propri del bacino del Mediterraneo. Analisi CFD... more

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- by Alessandro Dinaro and +1
  Ernesto Stancanelli
- •
- 9
  Architecture, Energy efficiency, Social Housing, Sustainable Building Renovation

Recently wind resource assessment studies have become an important research tool to identify the possible wind farm locations. In this thesis work technical analysis was carried out to determine the wind resource potential of two... more

Recently wind resource assessment studies have become an important research tool to identify the possible wind farm locations.
In this thesis work technical analysis was carried out to determine the wind resource potential of two candidate sites in Eritrea with help of suitable software tools. The first site is located along the Red Sea cost which is well known for its wind resource potential, whereas the second site is located in the central highlands of Eritrea with significant wind resource potential. Detailed wind resource assessment, for one year hourly weather data including wind speed and wind direction, was performed for the two candidate sites using MS Excel and MATLAB. The measured wind data at Assab wind site showed that the mean wind speed and power density was 7.54 m/s and 402.57 W/m2 , whereas the mean wind speed and mean power density from Weibull distribution was 7.51 m/s and 423.71 W/m2 respectively at 80m height. Similarly, the measured mean wind speed and
mean power density at Dekemahre wind site was obtained to be 5.498 m/s and 141.45 W/m2, whereas the mean wind speed and mean power density from Weibull distribution was 5.4859m/s and 141.057W/m2 respectively. Based on the analysis results Assab wind site classified as wind class-III and Dekemhare as wind class-I.

Wind farm modeling and Annual Energy Production (AEP) estimation was performed for E-82 & E-53 model turbines from Enercon Company with the help of MATLAB and Windpro software.
The analysis revealed that Assab wind farm was an ideal site for wind energy production with capacity factor (CF) 53.4% and 55% for E-82 and E-53 turbines respectively. The gross and net AEP for turbine E-82 at Assab wind farm was 469.5 GWh and 446.025 GWh respectively with 95% park efficiency. Similarly, the analysis showed that the CF in Dekemhare site was very low with typical value 14.2% and 15.26% for E-82 and E-53 turbines respectively. The gross and net AEP of that site for model turbine E-53 was 53.5 GWh and 50.825 GWh respectively with 5% wake loss.

Finally, a simplified economic analysis was carried out to determine the economic feasibility of possible wind power projects in both sites by assuming investment cost 1600 €/kW for E-82 turbine and 2000 €/kW for E-53 turbine. The total wind farm investment cost was found to be 215.85 and 107.93 Million Euro for E-82 and E-53 model turbines respectively. The levelized cost of energy at Assab and Dekemhare wind farm for E-82 model turbine was 0.0307 €/kWh and 0.5526 €/kWh respectively. The analysis result show that the levelized cost of energy in Dekemhare wind fasrm was much higher than that of Assab wind farm.

Sick Building Syndrome (SBS) was identified and defined some 30 years ago and has been investigated since then, yet recently designed and constructed buildings seem to disregard both the phenomenon and the significant body of work that... more

In commercial buildings in Lahore, artificial cooling systems are needed to attain the required comfort level due to high heat gain inside. Energy efficient window design is the only solution which can limit this cooling demand. This... more

Se presenta la problemática actual del uso de la energía de cara al agotamiento de las fuentes fósiles, el abastecimiento y la contaminación atmosférica de gases tóxicos, de efecto invernadero y destructores de la capa de ozono. Se... more

Filling stations are retail outlets where automobiles are refuelled, lubricated and serviced aside other retail activities, hence it creates few environmental issues. The aim of this study is to assess the degree of application of... more

Filling stations are retail outlets where automobiles are refuelled, lubricated and serviced aside other retail
activities, hence it creates few environmental issues. The aim of this study is to assess the degree of
application of environmental sustainability design requirements filling stations provision. The study
examined 50 filling stations out of the total population of 78 in Minna, using a purposive sampling method
that was based on filling stations with minimum of six pumps. A checklist that captured the studied
variables was administered on the selected filling stations that were divided into three zones. The data
collected was analysed using descriptive statistical tools in SPSS and the results are presented in charts and
tables. The use of plates was to show physical description of some of the issues observed in the study. The
results revealed over 90% of filling stations did not make design considerations for environmental
sustainability of the filling station at the design stage. The results also show that 84% of the filling stations
were situated on plots that were less than 50m by 100m which made it difficult to achieve environmental
sustainability within the stations. The study equally revealed that only 2% of the filling stations studied
made use of photovoltaic system as alternative source of energy for the running of the filling station. It was
also observed that the filling stations had the opportunity to adapt their station to environmentally
sustainable design features which should have helped improve the overall sustainability of the filling station
and it environment. It is recommended that the design of filling stations should adhere to the
Environmental Impact Assessment report and also ensure that the buildings located within them are
environmentally friendly through the incorporation of design features that support eco-friendliness. It is
also recommended that there is need for filling station owners and the architects involved in the designs of
filling stations to explore sustainability design issues in their provision in order to ensure a healthier and
safer environment.

The main purpose of the building envelope is to protect us from the surrounding climate; the building envelope is not only a shelter but also an active component in the system of the building, which can also defined as an environmental... more

Studies have shown that using naturally ventilated double skin facades could enhance energy performance of buildings through heat dissipation. Also, using shading devices could lower down energy consumption by blocking undesired solar... more

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- by Abdulrahman Fahmy and +1
  Ahmed Faggal
- •
- 12
  Architecture, Environmental Studies, Indoor Air Quality, Environmental Sustainability

Dans les climats chauds et secs, l'excès des gains solaires peut entraîner une consommation énergétique élevée avec des conditions intérieures désagréables. Le contrôle solaire est un paramètre important, à considérer dans la conception... more

Dans les climats chauds et secs, l'excès des gains solaires peut entraîner une consommation énergétique élevée avec des conditions intérieures désagréables. Le contrôle solaire est un paramètre important, à considérer dans la conception des bâtiments pour améliorer l’efficacité énergétique. Les systèmes avancés du CAO intègrent des outils de calcul, tels que les systèmes de conception paramétriques, qui permettent de concevoir des bâtiments avec des enveloppes adaptatives aux changements de l’environnement extérieur. Le design paramétrique permet la conception des enveloppes de construction innovantes, plus adaptables et interactives, répondant activement aux conditions météorologiques, il permet aussi d’améliorer la performance énergétique et le confort thermique intérieur. Cette étude examine et évalue l'effet des panneaux d’ombrage dynamiques sur le confort thermique intérieur et l'efficacité énergétique. Le contrôle du rayonnement solaire se fait par le calcul de la taille et le mouvement de l’unité de base du panneau d'ombrage en réponse aux changements environnementaux. Les panneaux photovoltaïques (PV) semi-transparents ont été utilisés comme matériau des panneaux d’ombrage, afin d'assurer leur autonomie vis-à-vis de leurs mouvements. Ce dispositif est appliqué pour la protection des façades vitrées d'un immeuble dont le ratio des parois transparentes est trop élevé. Cette étude a été menée à la ville de Biskra (34,6 N de latitude) caractérisé par un climat chaud et aride, situé au sud de l’Algérie. Les résultats obtenus par simulation du bâtiment avec le dispositif d’ombrage intégré, en utilisant GECO-Grasshopper (extension paramétrique pour Rhinocéros), ont montré que les panneaux d’ombrage dynamiques intelligents équipés de modules photovoltaïques ont influencé de manière positive le niveau de confort thermique et visuel, ainsi que l’efficacité énergétique du bâtiment.

En un artículo reciente, 1 subrayaba el lugar privilegiado que Reyner Banham otorgó a la Argentina en el fenómeno de las megaestructuras, en particular, al proyecto de la Ciudad Universitaria de Tucumán (1950) -"allí donde la cuestión... more

En un artículo reciente, 1 subrayaba el lugar privilegiado que Reyner Banham otorgó a la Argentina en el fenómeno de las megaestructuras, en particular, al proyecto de la Ciudad Universitaria de Tucumán (1950) -"allí donde la cuestión comenzó"-y a las maquetas de alumnos de la Escuela de Rosario -una de las expresiones más radicales relevadas en las aulas de Londres, Los Angeles y Argentina en sus viajes de 1968. Estas observaciones realizadas en su ya clásico Megastructure. Urban future of the recent past 2 permiten repensar una serie de búsquedas y experiencias locales de los años 50 y 60 en una inusitada sincronía con los debates internacionales. También hipotizar sobre una posible autonomía de su desarrollo en correspondencia con ciertas marcas regionales: el planteo corbusierano de la gran dimensión en correspondencia con la geografía latinoamericana; su impacto en la arquitectura a gran escala como llave de propuestas urbanísticas por parte de sus seguidores; el don de la monumentalidad (Hitchcock dixit) en la arquitectura latinoamericana; la importancia otorgada a la mirada hacia y desde la lejanía, de matriz spengleriana, como clave de los proyectos urbanos y su renovado romance con el paisaje; la influencia de Pier Luigi Nervi y su concepción plástica de las estructuras de hormigón resistentes por la forma; las exploraciones estructurales de Eduardo Catalano, graduado en Penn y en Harvard, y los estudios de Mario Corea con Fumihiko Maki, también en Harvard; las singulares interpretaciones de lo lúdico por Clorindo Testa: todo esto en un clima signado por las estrategias geopolíticas de la presidencia de Juan Domingo Perón, el optimismo asociado al paradigma desarrollista y algunas felices convergencias de períodos democráticos y efervescencia universitaria. En síntesis, tópicos y circunstancias eficaces para la recepción y reformulación de modelos y conceptos que estaban en el aire en esas décadas borrachas de futuro, entre los cuales deberíamos agregar los esfuerzos de una adaptación al clima subtropical de soluciones formales pensadas para climas fríos y rigurosos (grandes cubiertas selladas para la respiration exacte), aunque también la hipertrofia de los brise soleil.

Daily average solar radiation on south wall: 111.3 W/m 2 Daily average solar radiation on east wall: 158.2 W/m 2 Daily average solar radiation on north wall: 101.1 W/m 2 Daily average solar radiation on west wall: 155.2 W/m 2 Daily... more

Recently, the United Arab Emirates has been faced with a rapidly growing economy and has become intensively resource dependent. Consequently, it has topped a list of countries with the largest ecological footprint. At the same time there... more

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- by May Al-Saffar
- •
- 8
  Housing, Affordable Housing, Sustainable Architecture, Biomimicry

In recent years, there has been a growing interest in the design of courtyards for the microclimatic enhancement of outdoor spaces. However, there is still little knowledge regarding the thermal performance characteristics of courtyards,... more

Building ventilation is necessary in providing acceptable indoor air quality (IAQ). It is a process of supplying fresh air and removing or diluting indoor pollution concentration. With an increasing awareness of energy saving lately,... more

Thermal comfort & Energy efficiency in hot climates

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