The investigation of energy production and mushroom yield in greenhouse production based on mono photovoltaic cells effect

2020 ◽  
Vol 159 ◽  
pp. 506-518
Author(s):  
Wael El Kolaly ◽  
Wenhui Ma ◽  
Ming Li ◽  
Mohammed Darwesh
Keyword(s):  
Energy Production ◽  
Photovoltaic Cells ◽  
Greenhouse Production ◽  
Mushroom Yield

scholarly journals Photovoltaic installation for a roofed car park in Egypt as an example of effective use of solar energy

2018 ◽  
Vol 49 ◽  
pp. 00127 ◽  
Author(s):  
Michał Wichliński ◽  
Janusz Staszkiewicz
Keyword(s):  
Energy Production ◽  
Photovoltaic Cells ◽  
Performance Ratio ◽  
High Price ◽  
Important Player ◽  
Car Park ◽  
Full Capacity ◽  
Cell Modules ◽  
Low Efficiency ◽  
Effective Use

Photovoltaic installations are becoming an increasingly important player in the global renewable energy production market. The biggest disadvantage of photovoltaic installations is their high price, and relatively low efficiency. Photovoltaic cells achieve a theoretical efficiency of 30%, but in real conditions this efficiency is much lower at roughly 15%. Photovoltaic installations are particularly recommended in locations where the amount of solar radiation is high and where photovoltaic installations will be able to work at full capacity for most of the year. The paper presents an analysis of the work of a photovoltaic installation built for a roofed car park located in eastern Cairo, the capital of Egypt. The installation is built for a car park located at the Schlumberger company. The installation is built of 1344 Hanwha Q.Power L-G325 silicon polycrystalline cell modules, each module has a power of 325 Wp, and the total area of the installation is 2,611 m2. Effective irradiance on collectors is 1922 kWh/m2. The array’s nominal produced energy was 840 MWh/year, the amount of electricity injected into the grid was 587 MWh/year, which means that the calculated performance ratio was 0.62.

Mitochondrial matrix calcium ions regulate energy production in myocardium: A cytochemical study

1990 ◽  
Vol 48 (2) ◽  
pp. 166-167
Author(s):  
W.A. Jacob ◽  
R. Hertsens ◽  
A. Van Bogaert ◽  
M. De Smet
Keyword(s):  
Energy Metabolism ◽  
Calcium Ions ◽  
Energy Production ◽  
Regulation Of Respiration ◽  
Free Calcium ◽  
Mitochondrial Matrix ◽  
Cytochemical Study ◽  
Nmr Techniques

In the past most studies of the control of energy metabolism focus on the role of the phosphorylation potential ATP/ADP.Pi on the regulation of respiration. Studies using NMR techniques have demonstrated that the concentrations of these compounds for oxidation phosphorylation do not change appreciably throughout the cardiac cycle and during increases in cardiac work. Hence regulation of energy production by calcium ions, present in the mitochondrial matrix, has been the object of a number of recent studies.Three exclusively intramitochondnal dehydrogenases are key enzymes for the regulation of oxidative metabolism. They are activated by calcium ions in the low micromolar range. Since, however, earlier estimates of the intramitochondnal calcium, based on equilibrium thermodynamic considerations, were in the millimolar range, a physiological correlation was not evident. The introduction of calcium-sensitive probes fura-2 and indo-1 made monitoring of free calcium during changing energy metabolism possible. These studies were performed on isolated mitochondria and extrapolation to the in vivo situation is more or less speculative.

Infrared ellipsometric characterization of SixNy films on textured Si photovoltaic cells

2008 ◽  
Author(s):  
Mario Fernando. Saenger ◽  
Martin Schädel ◽  
Tino Hofmann ◽  
James Hilfiker ◽  
Jianing Sun ◽  
...  
Keyword(s):  
Photovoltaic Cells ◽  
Ellipsometric Characterization
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