Practical study on heat pump enhancement by the solar energy

This study intends to analyse the generated individual output energy by different types of wind turbines. Focusing on estimating the total energy output generated by a wind farm utilizing three distinct wind turbines, Siemens Gamesa SG 3.4-132, Vesatas HTq V126, and Lagerwey L100, with rated powers of 3.465MW, 3.45 MW, and 2.5 MW respectively. Sixty turbines of each type will be installed at the elevations of 97 m, 87 m, and 99 m consecutively. For the purpose of the study, the Sorochi Gory region was chosen as an eligible location to the farm, due to its physiographic location and desirable forestry. A virtual experiment will be conducted, by testing different possible wind turbines configurations, and calculating their gross energy output, considering the output wind speed is in the ideal case, while the output energy includes the wake effect, using (WindFarmer analyst software). Thereupon, the results will be presented, including the optimal wind turbine configuration for the wind farm, in terms of efficiency, stability, and economy wise. Doi: 10.28991/HEF-2020-01-04-03 Full Text: PDF

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“…where: Pa -the actual power from the turbine, kW; Pwthe wind power acting on the thrust force, and can be written as [13]:…”

Section: The Curve Properties Of the Wind Turbinementioning

confidence: 99%

Analysis of the Generated Output Energy by Different Types of Wind Turbines

Hassan

Mahmoud

Almohammed

2020

J. Hum. Earth Future

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“…The thermal conductivity of the material, is greatly affected by the arrangement of particles, crystals and impurities, as well as, the gaps between the fragments forming the body, therefore, the body that formed from the pure material, and have a homogeneous particles and crystals arrangements, is able to conduct heat better than a body with the same dimensions and is made from the same material used in the first object, but it has impurities or gas bubbles which increases its thermal resistance [2][3][4]. Grain size also affects thermal conductivity, because the space between big fragments is more than that in case of small particles, and that gaps may be filled with different impurities.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Effect of Sawdust Particles Size on Its Thermal Conductivity

Yassien¹,

Mustafa²,

Soheel³

et al. 2023

IJHT

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The measurement of the thermal conductivity of the sawdust is one of the most difficult techniques due to its uniformed shape, by using this instrument, it gives the ability of measuring the thermal conductivity of the sawdust, without changing its physical properties, during the experiment, as well as, there are no necessity to use the additional materials in form of adhesive materials, that gives an identified shape of the specimen. In this study, wood sawdust is classified into three groups depending on the size of the wood pellets, namely; wo1≥1.18mm, 1.18>wo2>0.6mm and wo3≤0.6mm. To keep out the thermal properties of the sawdust as it is, no mechanical or chemical processes were carried out on sawdust specimens, such as compressing or bonding. The effect of moisture content on the thermal properties of sawdust is eliminated by drying the specimens, the procedure is carried out by heating it up to 100℃ for a 30 min. During this study, it can be seen that the thermal conductivity of all samples is inversely proportional to the working temperature. At a relatively low temperature less than 45℃, it can be said that the first model (wo1) has the lowest thermal conductivity while the differences in the thermal conductivity of the samples are insignificant when the temperature exceed 50℃, therefore; the first model (wo1) represents a good choice for flat plate solar collector insulation because it has the same activity as well as it is light and cheap.

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