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Soteris A. Kalogirou - One of the best experts on this subject based on the ideXlab platform.
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Generation of Typical Meteorological Year (TMY-2) for Nicosia, Cyprus
Renewable Energy, 2003Co-Authors: Soteris A. KalogirouAbstract:The present paper presents the generation of a type 2 Typical Meteorological Year (TMY-2) for Nicosia, Cyprus. This tool may be useful for the prediction and comparison of the performance of passive and active solar systems and for building thermal analysis. The present TMY-2 is generated from a simple TMY created in the past from available hourly Meteorological data recorded during the period 1986–1992 using the Filkenstein–Schafer statistical method. The present TMY-2 contains much more data which leads to more accurate predictions especially in building simulations. This includes in addition to solar radiation values, illuminance, and other Meteorological elements such as visibility, precipitation and snowfall records.
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ANALYSIS OF THE Typical Meteorological Year (TMY) OF CYPRUS AND HOUSE LOAD SIMULATION
2003Co-Authors: George Florides, Soteris A. Kalogirou, Kyriacos Theophilou, Evangelos EvangelouAbstract:The objective of this paper is to present an analysis of the weather data contained in a Typical Meteorological Year (TMY) and observe the effect of these data on the simulated load of a Typical building. The weather data, contained in the TMY, are analysed with respect to the global and diffuse radiation falling on surfaces facing the four orientations, ambient temperature, wind speed and direction, and humidity ratio. Collective results for the whole Year indicate that the east wall receives 30% more total radiation than the south wall and the west wall receives only 20% of the beam radiation of the east wall. Three different construction types of a Typical house layout are also used in this study and simulated with respect to the heating and cooling loads for a complete Year. For the weather encountered in Cyprus the maximum cooling load occurs in July and the maximum heating load in January. The monthly saving in loads by using insulation is of the order of 50% for cooling and 75% for heating.
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Analysis of the Typical Meteorological Year of Cyprus and Typical House Load
2003Co-Authors: Evangelos Evangelou, Soteris A. Kalogirou, George Florides, Kyriacos TheophilouAbstract:This paper is published in the Eighth International IBPSA Conference,Eindhoven, Netherlands, Vol. 1, pp. 339-346
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Energy consumption analysis of a Typical house in Cyprus
2000 10th Mediterranean Electrotechnical Conference. Information Technology and Electrotechnology for the Mediterranean Countries. Proceedings. MeleCo, 2000Co-Authors: George Florides, Soteris A. Kalogirou, Savvas A. TassouAbstract:This study uses TRNSYS to estimate the energy consumption of the Typical houses of Cyprus. For the calculations, a Typical Meteorological Year for the Nicosia area and a Typical model house are used. The internal house temperature, when no air-conditioning is used, is simulated. The effect on the temperature and the heating and cooling loads that various wall and roof constructions have, is determined.
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Generation of a “Typical Meteorological Year” for Nicosia, Cyprus
Renewable Energy, 1998Co-Authors: M. Petrakis, S. Lykoudis, Pavlos Kassomenos, Harry D. Kambezidis, A.d. Adamopoulos, I.m. Michaelides, Soteris A. Kalogirou, G. Roditis, I. Chrysis, A. HadjigianniAbstract:The present study is concerned with the generation of a Typical Meterological Year for Nicosia, Cyprus. The above tool will be useful for the prediction and comparison of the performance and cost effectiveness of passive and active solar systems in the island. The Typical Meteorological Year was generated from available hourly Meteorological data recorded during the period 1986–1992, using the Filkenstein-Schafer statistical method.
Sigrid Reiter - One of the best experts on this subject based on the ideXlab platform.
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a climate analysis tool for passive heating and cooling strategies in hot humid climate based on Typical Meteorological Year data sets
Energy and Buildings, 2014Co-Authors: Anh Tuan Nguyen, Sigrid ReiterAbstract:Abstract Through a newly developed climate analysis tool, this paper examines the potential of improving thermal comfort under the climates of Vietnam thanks to passive strategies. A building climatic chart for Vietnamese was proposed based on Fanger's theory [1] and the comfort zone of this chart was then extended by calculating the effects of passive heating and cooling strategies. Typical Meteorological Year weather data are used for extracting and graphically printing of hourly environmental parameters on the psychrometric chart and for climate analysis, subsequently. The limitation and the scope of this method are also specified. The climates of three climatic regions in Vietnam have been used as case studies using all Year, seasonal and monthly analysis. The results show that natural ventilation is an effective cooling solution as thermal comfort improvement varies with the climatic zones, increasing from 24.8% in Hanoi, 22.1% in Danang to 32.0% in Hochiminh city. Meanwhile, passive solar heating is only effective under the climate of Hanoi. Direct evaporative cooling also shows great cooling potential for comfort improvement but probable elevated humidity is not expected. Total possible comfort in a Year of each location indicates that further climate modification methods are inevitable to achieve comfort during extreme weather conditions, especially in Hanoi.
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Analysis of Passive cooling and heating potential in Vietnam using Graphical Method and Typical Meteorological Year weather file
2011Co-Authors: Anh Tuan Nguyen, Sigrid ReiterAbstract:This paper studies the potential to improve thermal comfort in Vietnam thanks to passive strategies. First, a thermal comfort zone for the Vietnamese is proposed by using the PMV-PPD heat balance model of Fanger and the effects of adaptive mechanism of the people living in tropical hot humid region. Then, the comfort zone is enlarged using the algorithms proposed by the authors to calculate the effects of the passive heating and cooling strategies. Typical Meteorological Year (TMY) weather data are used for graphically printing of hourly environmental parameters on the psychrometric chart and for climate analysis, subsequently. The limitation and the scope of this method are also specified. Results of this study show that in all climatic zones of Vietnam, natural ventilation is an efficient cooling solution, low-cost and easy to apply. Thermal comfort improvement of natural ventilation strategy varies with the climatic zones, increasing from 17.1% in Hanoi, 21% in Danang to 31.4% in Hochiminh city. Meanwhile, passive solar heating is not really effective since winter in Vietnam is usually not too cold and the capacity of the passive solar collector system is usually limited. Direct evaporative cooling also has a great cooling effect compared with that of natural ventilation, but significant humidity augmentation in the air in hot and humid conditions may be inappropriate. Seasonal analysis reveals that natural ventilation gives higher performance than other methods and is particularly effective in mild seasons. During 12 months in Hanoi, the analysis clearly shows significant contribution of natural ventilation in the period from April to October during which comfort period achieved might vary from 30% to 81%. The combination of all passive strategies considerably improves thermal comfort: 22.6%, 31.7% and 47.6% of total time in Hanoi, Danang and Hochiminh city, respectively. Finally, the findings of this study indicate that conventional heating and cooling methods are also needed during extreme weather conditions in summer and winter, especially in Hanoi.
Olayinka S. Ohunakin - One of the best experts on this subject based on the ideXlab platform.
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Photovoltaic performance prediction in Northern Nigeria using generated Typical Meteorological Year dataset
African Journal of Science Technology Innovation and Development, 2018Co-Authors: Olayinka S. Ohunakin, Muyiwa S. Adaramola, Olanrewaju M. Oyewola, R. O. Fagbenle, Damola S. Adelekan, Jatinder Gill, Fidelis I. AbamAbstract:Relevant Meteorological files are needed by simulation software to assess the energy performances of buildings or efficiency of renewable energy systems. This paper adopts the Sandia method to gene...
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A Typical Meteorological Year Generation Based on NASA Satellite Imagery (GEOS-I) for Sokoto, Nigeria
Meteorology and Energy Security, 2016Co-Authors: Olayinka S. Ohunakin, Muyiwa S. Adaramola, Olanrewaju M. Oyewola, R. O. Fagbenle, Fidelis I. AbamAbstract:Energy remains the convergence point of most critical economic, environmental,\ud and developmental issues confronting the wodd at the moment.\ud Clean, efficient, stable, and sustainable energy seiVices are ideal for global\ud prospe1ity. Energy is paramoru!l to achievi11g Nige1ia's Vision 20:2020\ud needed by the coruttly to be among the top 20 industiialized nations of\ud the world. Lack of energy or its insufficiency in an economy is a potential\ud source of social and economic pove1ty [I]. In general, a larger prop01tion\ud of energy is found to be consumed in buildings in Nigeria as is the case in\ud many countries. There is thus a growing concern about energy consrunp
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A Typical Meteorological Year Generation Based on NASA Satellite Imagery (GEOS-I) for Sokoto, Nigeria
International Journal of Photoenergy, 2014Co-Authors: Olayinka S. Ohunakin, Muyiwa S. Adaramola, Olanrewaju M. Oyewola, R. O. Fagbenle, Fidelis I. AbamAbstract:Computer simulation of buildings and solar energy systems are being used increasingly in energy assessments and design. This paper evaluates the Typical Meteorological Year (TMY) for Sokoto, northwest region, Nigeria, using 23-Year hourly weather data including global solar radiation, dew point temperature, mean temperature, maximum temperature, minimum temperature, relative humidity, and wind speed. Filkenstein-Schafer statistical method was utilized for the creation of a TMY for the site. The persistence of mean dry bulb temperature and daily global horizontal radiation on the five candidate months were evaluated. TMY predictions were compared with the 23-Year long-term average values and are found to have close agreement and can be used in building energy simulation for comparative energy efficiency study.
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Generation of a Typical Meteorological Year for north–east, Nigeria
Applied Energy, 2013Co-Authors: Olayinka S. Ohunakin, Muyiwa S. Adaramola, Olanrewaju M. Oyewola, R. O. FagbenleAbstract:The Finkelstein–Schafer statistical method was applied to analyze a 34-Year period (1975–2008) hourly measured weather data which includes global solar radiation, dry bulb temperatures, precipitation, relative humidity and wind speed in order to generate Typical Meteorological Year (TMY) for five locations spreading across north–east zone, Nigeria. The selection criteria are based on solar radiation together with the dry bulb temperature values and representative Typical Meteorological months (TMMs) were selected by choosing the one with the smallest deviation from the long-term cumulative distribution function. A close-fit agreement is observed between the generated TMY and long-term averages. The TMY generated will be very useful for optimal design and performance evaluation of solar energy conversion systems, heating, ventilation, and air conditioning (HVAC) and other solar energy dependent systems to be located in this part of Nigeria.
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generation of a Typical Meteorological Year for north east nigeria
Applied Energy, 2013Co-Authors: Olayinka S. Ohunakin, Muyiwa S. Adaramola, Olanrewaju M. Oyewola, R. O. FagbenleAbstract:The Finkelstein–Schafer statistical method was applied to analyze a 34-Year period (1975–2008) hourly measured weather data which includes global solar radiation, dry bulb temperatures, precipitation, relative humidity and wind speed in order to generate Typical Meteorological Year (TMY) for five locations spreading across north–east zone, Nigeria. The selection criteria are based on solar radiation together with the dry bulb temperature values and representative Typical Meteorological months (TMMs) were selected by choosing the one with the smallest deviation from the long-term cumulative distribution function. A close-fit agreement is observed between the generated TMY and long-term averages. The TMY generated will be very useful for optimal design and performance evaluation of solar energy conversion systems, heating, ventilation, and air conditioning (HVAC) and other solar energy dependent systems to be located in this part of Nigeria.
Fidelis I. Abam - One of the best experts on this subject based on the ideXlab platform.
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Photovoltaic performance prediction in Northern Nigeria using generated Typical Meteorological Year dataset
African Journal of Science Technology Innovation and Development, 2018Co-Authors: Olayinka S. Ohunakin, Muyiwa S. Adaramola, Olanrewaju M. Oyewola, R. O. Fagbenle, Damola S. Adelekan, Jatinder Gill, Fidelis I. AbamAbstract:Relevant Meteorological files are needed by simulation software to assess the energy performances of buildings or efficiency of renewable energy systems. This paper adopts the Sandia method to gene...
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A Typical Meteorological Year Generation Based on NASA Satellite Imagery (GEOS-I) for Sokoto, Nigeria
Meteorology and Energy Security, 2016Co-Authors: Olayinka S. Ohunakin, Muyiwa S. Adaramola, Olanrewaju M. Oyewola, R. O. Fagbenle, Fidelis I. AbamAbstract:Energy remains the convergence point of most critical economic, environmental,\ud and developmental issues confronting the wodd at the moment.\ud Clean, efficient, stable, and sustainable energy seiVices are ideal for global\ud prospe1ity. Energy is paramoru!l to achievi11g Nige1ia's Vision 20:2020\ud needed by the coruttly to be among the top 20 industiialized nations of\ud the world. Lack of energy or its insufficiency in an economy is a potential\ud source of social and economic pove1ty [I]. In general, a larger prop01tion\ud of energy is found to be consumed in buildings in Nigeria as is the case in\ud many countries. There is thus a growing concern about energy consrunp
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A Typical Meteorological Year Generation Based on NASA Satellite Imagery (GEOS-I) for Sokoto, Nigeria
International Journal of Photoenergy, 2014Co-Authors: Olayinka S. Ohunakin, Muyiwa S. Adaramola, Olanrewaju M. Oyewola, R. O. Fagbenle, Fidelis I. AbamAbstract:Computer simulation of buildings and solar energy systems are being used increasingly in energy assessments and design. This paper evaluates the Typical Meteorological Year (TMY) for Sokoto, northwest region, Nigeria, using 23-Year hourly weather data including global solar radiation, dew point temperature, mean temperature, maximum temperature, minimum temperature, relative humidity, and wind speed. Filkenstein-Schafer statistical method was utilized for the creation of a TMY for the site. The persistence of mean dry bulb temperature and daily global horizontal radiation on the five candidate months were evaluated. TMY predictions were compared with the 23-Year long-term average values and are found to have close agreement and can be used in building energy simulation for comparative energy efficiency study.
Robert Sekret - One of the best experts on this subject based on the ideXlab platform.
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effect of pcm application inside an evacuated tube collector on the thermal performance of a domestic hot water system
Energy and Buildings, 2017Co-Authors: Piotr Felinski, Robert SekretAbstract:Abstract The article presents an analysis of the effect of PCM application inside an evacuated tube collector on the characteristic operating parameters of a solar water heating system. The temperature of hot water inside the tank and the solar fraction in a domestic hot water system were determined for a Typical Meteorological Year in the Polish city of Czestochowa. A methodology for determining the thermal performance of the evacuated tube collector/storage unit was proposed. The charging efficiency of the evacuated tube collector/storage in a range from 33 to 66% was obtained depending on the solar radiation intensity and the temperature of PCM. An application of latent heat storage (technical grade paraffin) inside the evacuated tube collector allowed the delayed release of heat in the evening, when the intensity of solar radiation was insufficient. As a result, an increase in the temperature of hot water inside the tank was observed during the hot water peak loads in every characteristic period of a Typical Meteorological Year. Furthermore, an evacuated tube collector/storage improved the annual solar fraction in a domestic hot water system by 20.5% compared with the reference evacuated tube collector without storage.
