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Solar (Winter)

December 10, 2024
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Sie strahlt vor Freude über ihre Auszeichnung – TH-Alumna Melanie Klaus. Für ihre Bachelorarbeit im Bereich Erneuerbare Energien wurde sie vom Solarenergieförderverein Bayern geehrt. In ihrer Bachelorarbeit im Studiengang Elektro- und Informationstechnik untersuchte sie das Zusammenspiel von Wind- und Solarenergie und den Nutzen, der sich hieraus für die regenerative Energieerzeugung erzielen lässt. Untersucht wurde also die Nutzung der natürlichen Kombination von Wind und Sonne für die Energieerzeugung. Um die Rentabilität dieser Einspeisekombination zu ermitteln, hat Melanie Klaus ein Software-Tool entwickelt, welches zur Planung und Simulation abgestimmter Photovoltaik-Wind-Kombinationen dient und bereits für die Errichtung einer Photovoltaik-Anlage zu einem Windpark eingesetzt wird.

Starting 2023 we separated our coverage of solar energy standards from our standing Electrical and Energy colloquia and placed emphasis on seasonal life cycle returns.   We start with the following titles

IEC TC 82 Solar photovoltaic energy systems

Underwriters Laboratories 1703 PV Module Certification

ASTM E772 Standard Terminology of Solar Energy Conversion

IEEE 1562 Guide for Array and Battery Sizing in Stand-Alone Photovoltaic Systems

NEMA Solar Photovoltaic Council

NECA 412 Standard for Installing and Maintaining Photovoltaic Power Systems

NFPA 70 Articles 690-691

NFPA 70 Articles 705 & 855

International Code Council Section 1607 Photovoltaic panels or modules

ASHRAE International: 90.1 Building Energy Code & 189.1 Green Energy Code

Time permitting: Example design specification and construction contract.

"Education is simply the soul of a society as it passes from one generation to another" - G.K. Chesterton

Other standards developers and publishers are also present in this domain but this list is where we will start given that we only have an hour.   Join us today at 16:00 with the login credentials at the upper right of our home page.

Readings:

What are the hidden costs of solar panels?

Do We Have Enough Silver, Copper, And Other Materials To Keep Up With The Growth Of Solar?

Mining Raw Materials for Solar Panels: Problems and Solutions

Grid-Connected Microgrid Battery Energy Storage Systems

Solar Panels on King’s College Chapel Roof

December 10, 2024
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“…The solar panels will populate the gothic chapel roof, producing an approximate 105,000 kWh of energy a year – enough to run the chapel’s electricity, and saving around £20,000 in energy bills per year. The college confirmed that any excess energy would be sold off to the national grid.

King’s College Announcement

Solar Panels on King’s College Chapel Roof

Solar panels perform better when listening to music:

A 2013 study by researchers at Imperial College London and Queen Mary University of London showed that solar panels actually work better when exposed to music, of multiple genres. Scientists at the university proved that when exposed to high pitched sounds, like those found in rock and pop music, the solar cells’ power output increased by up to 40 percent. Classical music was also found to increase the solar cells’ energy production, but slightly less so than rock and pop, as it generally plays at a lower pitch than pop and rock. Whether they know it or not, British band Coldplay are just one of the artists benefitting from this research. During their 2021 tour, they installed solar photovoltaic panels in the build-up to each show, “behind the stage, around the stadium and where possible in the outer concourses”…

BS 7671 Requirements for Electrical Installations

The Major Differences in Electrical Standards Between the U.S. and Europe

Representative Calculation: (WAG)

To determine how much electrical power and lighting 12 kilowatts (kW) will provide for an educational facility, we need to consider the following factors:

    1. Power Distribution: How the 12 kW will be distributed across different electrical needs such as lighting, computers, HVAC (heating, ventilation, and air conditioning), and other equipment.
    2. Lighting Requirements: The specific lighting requirements per square foot or room, which can vary based on the type of facility (classrooms, libraries, laboratories, etc.).
    3. Efficiency of Lighting: The type of lighting used (e.g., LED, fluorescent, incandescent) as this affects the power consumption and lighting output.

We start with lighting.

    1. Lighting Efficiency:
      • LED lights are highly efficient, typically around 100 lumens per watt.
      • Fluorescent lights are less efficient, around 60-70 lumens per watt.
    2. Lighting Power Calculation:
      • 12 kW (12,000 watts) of LED lighting at 100 lumens per watt would provide: 12,000 watts×100 lumens/watt=1,200,000 lumens
    3. Illumination Requirements:
      • Classroom: Approximately 300-500 lux (lumens per square meter).
      • Library or laboratory: Approximately 500-750 lux.
    4. Area Coverage:
      • If we target 500 lux (which is 500 lumens per square meter), we can calculate the area covered by the lighting: (1,200,000 lumens)/ 500 lux=2,400 square meters

Now we need to allocate power to other loads.

    1. Lighting: Assuming 50% of the 12 kW goes to lighting:
      • Lighting Power: 6 kW (6,000 watts)
      • Using the previous calculation: 6,000 watts×100 lumens/watt=600,000 lumens
      • Area Coverage for lighting (at 500 lux): (600,000 lumens)/500 lux=1,200 square meters
    2. Other Electrical Needs:
      • Computers and equipment: Typically, a computer lab might use around 100 watts per computer.
      • HVAC: This can vary widely, but let’s assume 4 kW is allocated for HVAC and other systems.

Breakdown:

    • Lighting: 6 kW
    • Computers/Equipment: 2 kW (e.g., 20 computers at 100 watts each)
    • HVAC and other systems: 4 kW

Summary

    • Lighting: 12 kW can provide efficient LED lighting for approximately 1,200 square meters at 500 lux.
    • General Use: When distributed, 12 kW can cover lighting, a computer lab with 20 computers, and basic HVAC needs for a small to medium-sized educational facility.

The exact capacity will vary based on specific facility needs and equipment efficiency.

 

 

Gingerbread Latte

December 10, 2024
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Michigan West

ProPublica Nonprofit Explorer: Davenport University, Kent County Michigan

Davenport University Facilities

Self Reliance: Ralph Waldo Emerson

“Self-Reliance” by Ralph Waldo Emerson is an essay that emphasizes individualism, nonconformity, and the importance of trusting one’s own instincts. Here are some passages from this influential accomplishment that informs American culture:

“Trust thyself: every heart vibrates to that iron string.”

” A foolish consistency is the hobgoblin of little minds, adored by little statesmen and philosophers and divines.”

“To be great is to be misunderstood.”

“Whoso would be a man must be a nonconformist.”

“Nothing can bring you peace but yourself. Nothing can bring you peace but the triumph of principles.”

These excerpts capture the essence of Emerson’s philosophy in “Self-Reliance,” promoting the idea of individualism, self-trust, and the pursuit of one’s unique path in life. 

We have avoided listing interpretations offered by artificial intelligence algorithms because those algorithms are informed by at least one-hundred years of biased interpretation by scholars funded by the US federal government which has long since grown hostile to individualism; worthy coffee-house debate.  We recommend you consult the original text, linked above.

Kent County Michigan

Solar Energy in Cold Climates

December 10, 2024
mike@standardsmichigan.com

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IEEE Explore: Michigan Regional Test Center

More:

Question: How many households can be supplied with 1 megawatt of power and how large would the solar panel be?

The number of square meters of solar panels required to generate 1 megawatt (MW) of power depends on several factors, including the efficiency of the solar panels, the amount of sunlight available in the location where the solar panels are installed, and the specific technology used.

On average, solar panels have a conversion efficiency of about 15-20%, which means that for every square meter of solar panel area, you can expect to generate between 150 and 200 watts of power in direct sunlight.

So, to generate 1 MW of power, you would need between 5,000 and 6,667 square meters of solar panels (assuming an average efficiency of 17.5%).

There are 2.58999 square meters in one square mile.

To convert 6,667 square meters to square miles, we can divide 6,667 by 2,589.99:

6,667 sq meters / 2,589.99 sq meters/sq mile = 2.572 square miles (rounded to three decimal places).

Answer:  Therefore 2.572 square miles of solar panels are required to supply 9345 household of power for 1 hour.

The number of households that can be supplied by 1 megawatt of power depends on a variety of factors, including the amount of electricity each household consumes, the time of day, and the season.

However, as a rough estimate, the US Energy Information Administration (EIA) reports that in 2020, the average US household consumed about 9,369 kilowatt-hours (kWh) of electricity per year, which is equivalent to an average of 0.107 MW of power.

Based on this average, 1 MW of power could supply approximately 9,345 households (1,000,000 watts / 0.107 MW per household) with electricity for one hour, assuming that all households are consuming the average amount of electricity.

Again, this is a rough estimate, and the actual number of households that can be supplied by 1 MW will depend on various factors such as the region, the time of day, and the actual energy consumption of each household.

Discussion: A typical residential lot is one-half acre.  Rounding 9345 households to 10,000 households; the households themselves have a footprint of 7.8125 square miles; with 1/3rd of the 2.572 square miles for 1 megawatt taken up by the panels.

Intellectual Property in the Age of Open Source

December 9, 2024
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Innovation management

Readings / FRAND licensing in an Unwired world

Protection of Intellectual Property in the Supply Chain

“Cantique de Jean Racine” Gabriel Fauré.

December 8, 2024
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Gabriel Fauré’s “Cantique de Jean Racine” is a choral work composed in 1865 when Fauré was 19. Written for a four-part choir, it’s a setting of a Latin text by the 17th-century French playwright Jean Racine, which reflects a deep, devotional tone. The text is a hymn of praise and supplication, asking for divine grace and mercy.

Fauré’s composition is noted for its lyrical beauty and sophisticated harmony, showcasing his early mastery of choral writing. The piece begins with a serene, flowing melody in the sopranos, which is then developed and harmonized throughout the choir. The work features lush, rich chords and a gentle, flowing rhythm, characteristic of Fauré’s style, blending simplicity with depth. Its mood is one of quiet contemplation and reverence, aligning with the text’s themes of divine worship and reflection.

 

La Loi Ne Fait Plus Le Bonheur

December 8, 2024
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AFNOR a organisé une discussion autour du nouveau livre La Loi Ne Fait Plus le Bonheur (The Law No Longer Makes You Happy) de Françoise Bousquet et Stéphane Jock, préfacé par Alain Lambert.  L’ouvrage se distingue par son caractère grand public : après une clarification du désordre sémantique autour du mot « norme », Les auteurs y présentent de manière simple, ludique et concrète les bienfaits des normes volontaires pour l’individu, l’entreprise et le pays. Ils proposent une voie nouvelle pour mettre enfin un terme à l’inflation de textes législatifs et réglementaires : développer leur complémentarité avec les normes d’application volontaire co-construites par celles et ceux qui sont concernés.

EN SAVOIR PLUS: Classement du bonheur 2023

Qui décide des normes volontaires?

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