نتایج جستجو برای: annual solar fraction

تعداد نتایج: 375499  

2009
E. Fuad KENT Necmi KAPTAN

In this paper solar assisted heating and absorption cooling system and domestic hot water needs for a hotel having fifty rooms in Antalya have been investigated. First of all, solar radiation and meteorological data for Antalya and heating and cooling loads of the hotel building are given. For the heating cycle, active systems using liquid as the working fluid; and for the cooling cycle, solar-...

Abbas Rajabi Khanghahi Ali Abbas Nejad Majid Amidpour, Mehdi Soufari Mohammad Zamen

One of the subjects in solar water heater design is considering distribution of hot water consumption during the day. For example, each of the household, commercial, office, school, and industrial consumptions have a particular distribution of hot water consumption named pattern in this article. In solar computation principles, the effect of longitude, latitude, and altitude on collector angle ...

Pakistan, with its large size and large population, is a target market for the export of goods and services. The existence of many borders between this country and Sistan and Baluchistan province in Iran is a suitable competitive advantage for the country. Also, the lack of proper relations with another neighboring country, India, as well as the unstable situation of Afghanistan, another neighb...

Journal: :Remote Sensing 2017
Klemens Hocke Francisco Navas-Guzmán Lorena Moreira Leonie Bernet Christian Mätzler

The TROpospheric WAter RAdiometer (TROWARA) is a ground-based microwave radiometer with an additional infrared channel observing atmospheric water parameters in Bern, Switzerland. TROWARA measures with nearly all-weather capability during dayand nighttime with a high temporal resolution (about 10 s). Using the almost complete data set from 2004 to 2016, we derive and discuss the diurnal cycles ...

2015
Sarah Ineson Amanda C. Maycock Lesley J. Gray Adam A. Scaife Nick J. Dunstone Jerald W. Harder Jeff R. Knight Mike Lockwood James C. Manners Richard A. Wood

Any reduction in global mean near-surface temperature due to a future decline in solar activity is likely to be a small fraction of projected anthropogenic warming. However, variability in ultraviolet solar irradiance is linked to modulation of the Arctic and North Atlantic Oscillations, suggesting the potential for larger regional surface climate effects. Here, we explore possible impacts thro...

2015
Myeong Jin Ko

This paper presents an optimization method to design a solar water heating (SWH) system based on life cycle cost (LCC). A genetic algorithm is employed to optimize its configuration and sizing as the optimization technique. To ensure that the optimal solution obtained from the proposed method is a practical design, three constraint conditions, including the energy balance, solar fraction, and a...

Hassan Hajabdollahi Majid Sedghi Dehnavi Zahra Hajabdollahi

Thermal modelling and optimal design of a solar absorption cooling system are presented, and hourly analysis is performed over the period of a year. Three design parameters are considered, then the Real Parameter Genetic Algorithm (RPGA) is applied to obtain the minimum total annual cost. The optimization results show that the solar cooling optimum configuration needs 1630 square meter collecto...

In this paper, a forced circulation solar water heater system is simulated for different hot water consumption profiles using flat plate collectors as well as evacuated tube collectors. The profiles studied are the actual samples of hot water consumption profiles for different commercial centers and institutions. Dynamic simulation outputs of system thermal performance are used as economic anal...

ژورنال: انرژی ایران 2017

Climatic conditions have a significant impact on the energy consumption of  buildings. Also check the angle of the solar radiation on buildings and controlling the amount of heat absorbed on building shell during the year have significant impact on building energy efficiency. The aim of this study was to investigate the effect of orientation of the building on the energy consumption and to this...

2016
P. H. Wagner M. Wittmann

One of the advantages of solar thermal power plants (STPPs) with molten salt as heat transfer fluid is the direct storage system. This means that the thermal energy collected by the solar field and the electric power generation can be fully decoupled. The plant operator must therefore make the daily decision when to start-up or to shut-down the power block (PB). Normally, the solar field of the...

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