A High-Level Measurement of Solar Radiation

1913 ◽  
Vol 37 ◽  
pp. 25 ◽  
Author(s):  
Frank W. Very
Keyword(s):  
Solar Radiation ◽  
Level Measurement ◽  
High Level

scholarly journals Study of Affecting Factors of Meteorological Parameters on Solar Radiation in Kathmandu Valley

The Batuk ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 72-80
Author(s):  
Prakash M. Shrestha ◽  
Khem N. Poudyal ◽  
Narayan P. Chapagain ◽  
Indra B. Karki
Keyword(s):  
Solar Radiation ◽  
Meteorological Parameters ◽  
Weather Conditions ◽  
Global Solar Radiation ◽  
Solar Irradiation ◽  
Maximum Temperature ◽  
Affecting Factors ◽  
Air Mass ◽  
High Level ◽  
Relative Sunshine

Solar radiation data are great significance for solar energy systems. This study aimed to estimate monthly and seasonal average daily global solar radiation on a horizontal surface in Kathmandu (27.7oN, 85.5oE, 1350 masl), Nepal, by using CMP6 pyranometer in 2012. The influence of the global solar irradiation from different physical as well as meteorological parameters was analyzed. Besides this, the research highlighted that there is high level of fluctuation of the measured value of global solar irradiance due to local weather conditions. As a result of this measurement, the maximum, minimum monthly and yearly mean solar radiation values were (21.32 ± 4.14) MJ/m2/day in May,(10.93 ± 2.03) MJ/m2/day in January and (16.68 ± 4.60)MJ/m2/day found respectively. Annual average of clearness index, maximum temperature, minimum temperature, relative sunshine hour, air mass are 0.51 ± 0.12, (26.23 ± 4.96)oC, (12.38 ± 6.83)oC, 0.57 ± 0.165 and 1.54 ± 0.42 respectively. There is positive correlation of maximum temperature and negative correlation of air mass with global solar radiation.

scholarly journals Comparative Experimental Analysis of Temperature Distribution in Mini Size Permeable and Non-Permeable Varying Salt Density Solar Pond

2021 ◽  
Vol 39 (2) ◽  
pp. 486-492
Author(s):  
Periyasamy Rangaraju ◽  
Santhia Sivakumar
Keyword(s):  
Temperature Distribution ◽  
Solar Radiation ◽  
Tamil Nadu ◽  
Heat Energy ◽  
Convective Zone ◽  
Solar Ponds ◽  
Solar Pond ◽  
Mixed Medium ◽  
The Difference ◽  
High Level

Varying salt density solar pond is a method that is best suited to absorb and store solar energy. This examination includes the test enhancement of the permeable and non-permeable sunlight-based ponds dependent on its exhibition in different conditions. This experiment was done in Salem, Tamil Nadu, India. This particular topographical area has a high level of solar radiation and is a tropical district. Readings for a period of 30 days were taken; the temperature circulation, a measure of heat energy stored and concentration of salt density was assessed. For examination, two comparable solar ponds of volume 0.02 m3 and a height of 0.32 m was built. Black granite pieces, broken glass pieces, and welding spatter were used as a permeable medium in the lower convective zone (LCZ) in one of the two solar ponds. The temperatures of the permeable solar pond and non-permeable solar pond reached the highest values of 42.3℃ and 40.6℃ respectively. The solar pond with a permeable medium demonstrated an increase of 4.18% in temperature. The difference in amounts of stored thermal energy is 4.54 kJ. From the obtained parameters, the optimization is done and the permeable medium solar pond is found to store more amount of heat energy than the non- permeable solar pond. For the optimization of the mixed medium, criterion parameter βelk has been acquired in the solar pond.

Observations of the Spectrum of High-Intensity Solar Radiation at Metre Wavelengths. IV. Enhanced Radiation

1951 ◽  
Vol 4 (1) ◽  
pp. 36 ◽  
Author(s):  
JP Wild
Keyword(s):  
Solar Radiation ◽  
High Intensity ◽  
Narrow Band ◽  
The Sun ◽  
Frequency Range ◽  
Radio Frequency Radiation ◽  
Variable Level ◽  
Background Continuum ◽  
High Level ◽  
Frequency Radiation

Observations are described of the spectrum of " enhanced radiation" from the Sun (i.e. the radio-frequency radiation which maintains a high but variable level for periods of hours' or days' duration) in the frequency range 70-130 Mc/s. This radiation is known to be received from the direction of sunspots and to show circular polarization. For the purpose of presenting results, two components are recognized, viz. a background continuum which varies gradually with time and frequency, and short-lived, narrow-band bursts (" storm bursts "). The behaviour of the two components, and the relation between them during periods of high level (" noise storms ") are described. A detailed analysis is given of the properties of recorded storm bursts. The distribution of recorded bursts with frequency was found to be markedly non- uniform, e.g. a pronounced minimum at 89 Mc/s. was present. The possibility that the background continuum is due to the resultant of a large number of bursts is discussed.

scholarly journals Sistem Informasi Pengukuran Efektivitas Produksi BerbasisWeb (Studi Kasus : PT. Beiersdorf Indonesia)

2015 ◽  
Vol 4 (2) ◽  
pp. 70
Author(s):  
Diovianto Putra Rakhmadani ◽  
Soetam Rizky Wicaksono
Keyword(s):  
Information System ◽  
Production Process ◽  
Measurement Information ◽  
Level Measurement ◽  
Measurement Information System ◽  
High Level ◽  
A Company ◽  
Manufacture Company ◽  
New System

<p>The effectiveness of the production is a must knowledge in a manufacture company, because it is closely<br />linked to the success level of a company, if effectiveness reaching high level, it will lead to be successful in<br />terms of meeting production targets. It is also happened at PT Beiersdorf Indonesia which requires method to<br />measure the effectiveness of production in their companies, particularly in Elastoplast production division.<br />PT Beiersdorf Indonesia requires certain method IPC computerized checklist which the system can give<br />information related to the evaluation of the effectiveness of production. Based upon these problems, it is clearly<br />stated that they need to use innovation in Effectiveness Level Measurement Information System Production.<br />This information system is designed to help the all involved employees the process, documenting, and directly<br />controls the activity of production. in this study, by creating the new system will help the company to conduct<br />an evaluation of the production process.</p>

Effect of Specular High-Level Clouds on Scattered Solar Radiation Fluxes at the Zenith

2021 ◽  
Vol 34 (4) ◽  
pp. 327-334
Author(s):  
I. D. Bryukhanov ◽  
S. V. Zuev ◽  
I. V. Samokhvalov
Keyword(s):  
Solar Radiation ◽  
Radiation Fluxes ◽  
High Level

Environmental Impact Assessment of Odours from Solid Waste Landfills Located in Highly Urbanized Areas

2017 ◽  
Vol 68 (8) ◽  
pp. 1749-1751
Author(s):  
Andrei Vasile ◽  
Valeriu Danciulescu ◽  
Tanase Gheorghita ◽  
Lidia Kim ◽  
Violeta Dediu
Keyword(s):  
Solid Waste ◽  
Standard Of Living ◽  
Specific Chemical ◽  
Level Measurement ◽  
Measurement Results ◽  
Odour Concentration ◽  
High Level ◽  
Solid Waste Landfills ◽  
The Impact ◽  
Dynamic Olfactometry

Urbanization and the rise in the standard of living generated both a higher quantity of waste and the expansion of cities with the incorporation of solid waste landfills located originally outside. In many cities across Romania, landfills are placed very close to settlements, and in some cases even inside cities. Beside landfill activities, other companies that deal with waste sorting, recycling and treatment operates nearby. All these activities generate odorous compounds that create odour nuisance. The current study was conducted in order to evaluate the impact of a landfill located in a highly urbanized area using dynamic olfactometry with the main objective to assess the level of odour concentration and the impact on the population. Samples were taken around the landfill always from a point opposite to the wind direction. Also, in parallel with odour sampling it was determined the concentration of two main chemical specific compounds, NH3 and H2S, in order to verify the compliance with environmental legislation, and the level of VOC to establish a correlation with the odour level. Measurement results indicate a high level of odour concentration in most of the samples, a good correlation with VOC and frequent exceeded values for the specific chemical compounds. Annoyance level was also high and it was evaluated using FIDOL factors, which are Frequency, Intensity, Duration, Offensiveness and Location.

Experimental Studies on a Solar Low Temperature Multi-Effect Distillation Desalination System

2014 ◽  
Vol 953-954 ◽  
pp. 20-23
Author(s):  
Dong Dong Feng ◽  
Xiao Bin Pei ◽  
Feng Ming Zhang ◽  
Yun Mo Zhao ◽  
Wei Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Solar Radiation ◽  
Water Temperature ◽  
Production Rate ◽  
Experimental Studies ◽  
Cooling Water ◽  
Water Production ◽  
Cooling Water Temperature ◽  
Water Production Rate ◽  
High Level

Solar energy has been widely used in desalination systems. A low-temperature multi-effect desalination system driven by solar is constructed for a series of experimental studies. The results show that water production rate grows with solar radiation, and maintains at a high level between 12am to 4pm. The optimized heat water flow is 1400 kg/h and appropriate cooling water temperature is 24 °C, respectively.

scholarly journals Comparison between Regenerator Model and the Instantaneous Direct Solar Radiation for Port Harcourt

2019 ◽  
Vol 4 (5) ◽  
pp. 76-79
Author(s):  
Rex Kemkom Chima Amadi ◽  
F. J. K. Ideriah ◽  
B. Nkoi
Keyword(s):  
Solar Radiation ◽  
Power Input ◽  
Global Solar Radiation ◽  
Visible Radiation ◽  
Chi Square ◽  
Photovoltaic Panel ◽  
Regenerator Material ◽  
Graph Presentation ◽  
Level Of Significance ◽  
High Level

This paper compares the result generated by the Regenerator technique and the Ideriah’s method for instantaneous solar radiation. It considered the generation of the actual power input from the regenerator. The actual power input to the photovoltaic panel was calculated from a power model derived from the regenerator’s standard power that is nominally provided, regenerator material and reflectivity of the material. The amount of visible radiation absorbable by photovoltaic plates was further derived in the model and a value of 0.386Pi was obtained. The Ideriah’s model was used to calculate global solar radiation from extraterrestrial solar radiation. It utilized the concept of transmittance to arrive at the amount of insolation received locally (i.e. at the point of interest). It also calculated the amount of insolation at optical thicknesses (Air mass values) representing top of the hour from 5.0am to 7.0pm. Comparison & result showed that the regenerator model gave 84% to 97% correctness or an approximated average correctness of 94% when compared to the Ideriah’s model. Chi-square was used to test the relationship between the results. Chi-square results showed a high level of significance in the similarity of the results obtained. Python software was used to simulate the results and graph presentation.

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