Solar Panel Orientation and Modeling Based on Hourly Clearness Index

2012 ◽  
Author(s):  
Mohammad H. Naraghi ◽  
Gregory Etienne
Keyword(s):  
New York ◽  
New York City ◽  
Solar Irradiance ◽  
Total Solar Irradiance ◽  
Solar Panel ◽  
Solar Panels ◽  
Clearness Index ◽  
Index Method ◽  
Irradiance Data ◽  
Solar Noon

Published hourly solar irradiance data are used to calculate the hourly clearness indices for three municipalities (Los Angles, Orlando and New York City). The clearness index method is then used to model the hourly total solar irradiance (summation of beam, diffuse and ground reflected) on an arbitrarily oriented surface. The orientations of solar panel for maximum annual solar irradiance for these locations are determined. It is shown that in some cases the southward solar panels do not yield maximum annual solar irradiance. Further, it is shown that using the hourly clearness index results in solar irradiance distribution that is not symmetric with respect to the solar noon.

A Demand Based Optimum Solar Panel Orientation

2010 ◽  
Author(s):  
Mohammad H. Naraghi
Keyword(s):  
New York ◽  
New York City ◽  
Power Consumption ◽  
York City ◽  
Energy Demand ◽  
Solar Panel ◽  
Consumption Pattern ◽  
Tilted Surface ◽  
Typical Summer ◽  
Building Cooling

The clear sky and monthly clearness index models are used to evaluate the hourly and monthly insolation on unit area of a tilted surface for the entire year. The hourly power consumption of a typical municipality (for this case New York City) for typical summer and winter days are used to determine the tilt and azimuth angles of a solar panel such that the solar energy reached the panel best match the energy consumption pattern. For the example case considered, in this work New York City, the electric power consumption peaks during summers at afternoon hours, due to increase in building cooling loads. It is found that orienting the solar panel at a westward azimuth angle with a tilt angle that results in maximum annual insolation is the best orientation of the solar panel for responding to both the peak energy demand and having reasonably high overall annual power generation. Although the model is used to optimize the solar panel orientation for New York City, it can however, be used for any building at any location as long as the needed solar data and power consumption pattern are known.

scholarly journals Science Highlights and Final Updates from 17 Years of Total Solar Irradiance Measurements from the SOlar Radiation and Climate Experiment/Total Irradiance Monitor (SORCE/TIM)

Solar Physics ◽  
2021 ◽  
Vol 296 (9) ◽  
Author(s):  
Greg Kopp
Keyword(s):  
Solar Radiation ◽  
Solar Irradiance ◽  
High Sensitivity ◽  
Total Solar Irradiance ◽  
Low Noise ◽  
Final Data ◽  
Total Irradiance ◽  
Noise Measurements ◽  
Irradiance Data ◽  
Measurement Record

AbstractThe final version (V.19) of the total solar irradiance data from the SOlar Radiation and Climate Experiment (SORCE) Total Irradiance Monitor has been released. This version includes all calibrations updated to the end of the mission and provides irradiance data from 25 February 2003 through 25 February 2020. These final calibrations are presented along with the resulting final data products. An overview of the on-orbit operations timeline is provided as well as the associated changes in the time-dependent uncertainties. Scientific highlights from the instrument are also presented. These include the establishment of a new, lower TSI value; accuracy improvements to other TSI instruments via a new calibration facility; the lowest on-orbit noise (for high sensitivity to solar variability) of any TSI instrument; the best inherent stability of any on-orbit TSI instrument; a lengthy (17-year) measurement record benefitting from these stable, low-noise measurements; the first reported detection of a solar flare in TSI; and observations of two Venus transits and four Mercury transits.

An Efficient Method for Assessing the Quality of Large Solar Irradiance Datasets

2005 ◽  
Vol 127 (1) ◽  
pp. 150-152 ◽  
Author(s):  
R. Claywell ◽  
T. Muneer ◽  
M. Asif
Keyword(s):  
Efficient Method ◽  
Solar Irradiance ◽  
Large Datasets ◽  
Solar Heating ◽  
Clearness Index ◽  
Algorithmic Approach ◽  
Related Research ◽  
Irradiance Data ◽  
Erroneous Data

There has been an enormous increase in the use of solar heating and photovoltaic systems worldwide. Building professionals to better design buildings, windows and other solar related constructs require current and accurate compilations of solar irradiance data. Frequently, enough care is not exercised with respect to quality of the measurements. Traditionally, researchers have used several methods for the quality assessment of solar irradiance data. This article addresses two of those methods, visual and quartile analysis, often used to identify “outliers” in the large datasets typically found in solar energy related research. The present work introduces another method for identification of erroneous data, based on standard deviations, using the clearness index and the diffuse ratio. This method is highly efficient in terms of its algorithmic approach.

Total solar irradiance data record accuracy and consistency improvements

Metrologia ◽  
2012 ◽  
Vol 49 (2) ◽  
pp. S29-S33 ◽  
Author(s):  
Greg Kopp ◽  
André Fehlmann ◽  
Wolfgang Finsterle ◽  
David Harber ◽  
Karl Heuerman ◽  
...  
Keyword(s):  
Solar Irradiance ◽  
Total Solar Irradiance ◽  
Data Record ◽  
Irradiance Data

Efficient geometry of flexible solar panels optimized for the latitude of New York City

2018 ◽  
Author(s):  
Malgorzata Marciniak ◽  
Yasser Hassebo ◽  
Delfino Enriquez-Torres ◽  
Nikesh Prajapati ◽  
Rupak Kadel ◽  
...  
Keyword(s):  
New York ◽  
New York City ◽  
York City ◽  
Solar Panels

An Important Armenian MS. with Greek Miniatures

1942 ◽  
Vol 74 (3-4) ◽  
pp. 155-162
Author(s):  
H. Kurdian
Keyword(s):  
New York ◽  
New York City ◽  
York City ◽  
Christian Iconography

In 1941 while in New York City I was fortunate enough to purchase an Armenian MS. which I believe will be of interest to students of Eastern Christian iconography.

Hospitals: N.Y. Appellate Court Denies Move to Privatize Public Hospital

1999 ◽  
Vol 27 (2) ◽  
pp. 202-203
Author(s):  
Robert Chatham
Keyword(s):  
New York ◽  
New York City ◽  
York City ◽  
Public Health System ◽  
Municipal Hospital ◽  
The Public ◽  
Public Benefit ◽  
For Profit ◽  
Benefit Corporation ◽  
The City

The Court of Appeals of New York held, in Council of the City of New York u. Giuliani, slip op. 02634, 1999 WL 179257 (N.Y. Mar. 30, 1999), that New York City may not privatize a public city hospital without state statutory authorization. The court found invalid a sublease of a municipal hospital operated by a public benefit corporation to a private, for-profit entity. The court reasoned that the controlling statute prescribed the operation of a municipal hospital as a government function that must be fulfilled by the public benefit corporation as long as it exists, and nothing short of legislative action could put an end to the corporation's existence.In 1969, the New York State legislature enacted the Health and Hospitals Corporation Act (HHCA), establishing the New York City Health and Hospitals Corporation (HHC) as an attempt to improve the New York City public health system. Thirty years later, on a renewed perception that the public health system was once again lacking, the city administration approved a sublease of Coney Island Hospital from HHC to PHS New York, Inc. (PHS), a private, for-profit entity.

Cultural Competence Needed to Distinguish Disorder from Difference: Beyond Kumbaya

2015 ◽  
Vol 22 (2) ◽  
pp. 64-76 ◽  
Author(s):  
Catherine J. Crowley ◽  
Kristin Guest ◽  
Kenay Sudler
Keyword(s):  
New York ◽  
New York City ◽  
Public Schools ◽  
Cultural Competence ◽  
York City ◽  
Cultural Sensitivity ◽  
Graduate Program ◽  
Language Disorder ◽  
New York State ◽  
Deep Understanding

What does it mean to have true cultural competence as an speech-language pathologist (SLP)? In some areas of practice it may be enough to develop a perspective that values the expectations and identity of our clients and see them as partners in the therapeutic process. But when clinicians are asked to distinguish a language difference from a language disorder, cultural sensitivity is not enough. Rather, in these cases, cultural competence requires knowledge and skills in gathering data about a student's cultural and linguistic background and analyzing the student's language samples from that perspective. This article describes one American Speech-Language-Hearing Association (ASHA)-accredited graduate program in speech-language pathology and its approach to putting students on the path to becoming culturally competent SLPs, including challenges faced along the way. At Teachers College, Columbia University (TC) the program infuses knowledge of bilingualism and multiculturalism throughout the curriculum and offers bilingual students the opportunity to receive New York State certification as bilingual clinicians. Graduate students must demonstrate a deep understanding of the grammar of Standard American English and other varieties of English particularly those spoken in and around New York City. Two recent graduates of this graduate program contribute their perspectives on continuing to develop cultural competence while working with diverse students in New York City public schools.

Self-perceived oral health among three subgroups of Asian-Americans in New York City: a preliminary study

2001 ◽  
Vol 29 (2) ◽  
pp. 99-106 ◽  
Author(s):  
Gustavo D. Cruz ◽  
Diana L. Galvis ◽  
Mimi Kim ◽  
Racquel Z. Le-Geros ◽  
Su-Yan L. Barrow ◽  
...  
Keyword(s):  
New York ◽  
New York City ◽  
Oral Health ◽  
Asian Americans ◽  
York City ◽  
Preliminary Study
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