Illumination 100

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Illumination 100

January 30, 2024
mike@standardsmichigan.com

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Replacing oil and natural gas lighting, the first practical electric light bulb was invented by Thomas Edison in 1879.  Joseph W. Swan filed a similar Electric Lamp Patent in 1880.  One of the first large-scale installations of electric lighting was at the Savoy Theatre in London in 1881, which was followed by the installation of electric lights in the Palace of Westminster in 1882. By the 1890s, electric lighting had become more widespread and affordable.

Opticks: or, A treatise of the reflections, refractions, inflexions and colours of light | Sir Isaac Newton 1704

 
The widespread transition to LED lighting in buildings began in the early 2010s. While LED technology had been available since the 1960s, it wasn’t until the 2000s that the technology improved to the point where LED lighting was cost-effective and efficient enough to replace traditional lighting technologies like incandescent and fluorescent lighting.  In addition to their energy efficiency, LED lights also have a longer lifespan than traditional lighting technologies, which makes them more cost-effective over the long term.

What is light?

Today we refresh our understanding of the moment in illumination technologies.  Illumination technology was the original inspiration for the electric utility industry; providing night-time security and transforming every sector of every economy on earth.  Lighting load remains the largest component of any building’s electric load — about 35 percent– making it a large target for energy regulations.  We are organizing our approach to this topic during 2023:

Illumination 100.  Survey of illumination standards catalogs

Illumination 200.  Interior illumination including industrial and laboratory occupancies

Illumination 300.  Exterior illumination with emphasis on pathways

Illumination 400.  Sport lighting, interior and exterior

Illumination 500.  Advanced topics including relevant legislation and litigation.

Except jankiness for most of 2023.  We have been doing this work since 1993 — starting with the National Electrical Code — and getting the topic organized into manageable segments will be a challenge.

Today our inquiry begins with selections from the following documents:

International Electrotechnical Commission TC 34 Lighting

IEC 60364 Electrical Installations in Buildings

Electrical installations and Protection Against Electric Shock

2023 National Electrical Safety Code

IEEE P3001.9 – Recommended Practice for the Design of Power Systems Supplying Lighting Systems in Commercial and Industrial Facilities (under development)

Institution of Engineering and Technology: Recommendations for Energy-efficient Exterior Lighting Systems

2023 National Electrical Code: Article 410

2019 ASHRAE 90.1: Chapter 9 Lighting

Illumination Engineering Society: Various titles

ISO/TC 274 Light and lighting

…and about 20 other accredited, consortia or ad hoc standards developers and publishers aligned principally with vertical incumbents.  Illumination was the original inspiration (i.e. the first “killer app”) for the electrical power industry in every nation.  Its best practice literature reflects a fast-moving, shape-changing domain.

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Upper Wharfedale Primary Federation School District Yorkshire Dales

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International Commission on Illumination

National Electrical Manufacturers Association

Lighting Systems Division Standards

National Electrical Contractors Association

Standard for Installing Indoor Commercial Lighting Systems (NECA500-06PDF)

Standard for Installing Exterior Lighting Systems (NECA501-06PDF)

Standard for Installing Industrial Lighting Systems (NECA502-06PDF)

Representative Specifications

Sam Houston State University | Division 26500 Interior and Exterior Lighting

University of Delaware | Division 265100 Interior Lighting

Cal Poly University San Luis Obispo | Division 265100 Interior Lighting

Lighting Calculations

Italian Wedding Soup

January 29, 2024
mike@standardsmichigan.com

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2017 National Electrical Code § 110.5

January 27, 2024
mike@standardsmichigan.com
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Changes in the National Electrical Code do not happen in bold strokes, neither do they happen without building a consensus among many stakeholders. After twelve years proposing that aluminum wiring as a conducting material receive bright line permission in the Chapter One of the NEC (instead of having it buried in the wiring tables of Chapter Three) — Mike Anthony’s proposal to add the word “or aluminum” (as an appropriate electrical conducting material) to this section of the NEC was approved and now stands as an option for electrical engineers and contractors. The result:

Ω The feeder building premise power chain can cost 2/3rd less — because aluminum wiring is 1/3rd the cost of copper wiring

Ω  “Swing feeders” on a large campus style medium voltage power grid can be built more economically; thereby increasing the reliability of an appropriately designed and operated power grid.

Christel Hunter explains a significant change in the 2017 National Electrical Code (NEC).   Getting two words changed in Section 110.5 of the NEC may not seem to be as disruptive a concept as it really is.   For the emergent #SmartCampus, use of aluminum wiring — especially for lengthy medium voltage feeders — presents the possibility of more economically feasible backup feeders which, in the case of university-affiliated medical research and healthcare delivery enterprises, can be worth millions of dollars per minute when forced outage restoration times are reduced. with the energization of a “backup swing feeder”.

Aluminum wiring — when installed according to specification — reduces the material cost of building premise wiring by 2/3rd’s.

Issue: [11-28]

Category: Electrical

Colleagues: Mike Anthony, Jim Harvey, Richard Robben

Aluminum wiring costs 2/3rds less and is about half the weight of copper wiring. Aluminum wiring does require a larger cross sectional area — and sometimes larger raceway — for the same ampere “throughput” as copper wiring.

A novel smart energy management system in sports stadiums

January 26, 2024
mike@standardsmichigan.com

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A novel smart energy management system in sports stadiums

Shady S. Refaat, et al

Texas A&M University at Qatar, Qatar Foundation, Doha, Qatar

Professional and collegiate sport venues consume huge electrical energy. Therefore, a smart management of their electric energy is essential for significant energy saving. Accordingly, this paper proposes a novel embedded real-time, smart, and active energy management system to monitor and efficiently manage such huge and typically uncontrolled energy for minimizing energy consumption and cost per day while considering spectators preferences, comfort level in behavioral modification program, and health aspects. This will provide an opportunity for spectators to reduce energy consumption and improve energy efficiency while considering healthcare concept. In addition, the proposed energy management system is equipped with embedded tools to collect and monitor energy information for each stadium’s area. The data are processed and fed to the artificial neural network algorithm that is used for managing and controlling stadium loads. This strategy does not require any change in the conventional stadium electrical panel. The proposed online algorithm yields to improve the overall grid efficiency, reliability, and increase awareness of the importance of energy conservation. Real-Time implementation of the concept is demonstrated and analyzed.


Michigan

Optimal Dispatch of Electricity-Gas Systems

January 23, 2024
mike@standardsmichigan.com
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北京清华大学

A Dynamic Equivalent Energy Storage Model of Natural Gas Networks for Joint Optimal Dispatch of Electricity-Gas Systems

Siyuan Wang, et. al

Department of Electrical Engineering, Tsinghua University, Beijing, China

Abstract:  The development of energy conversion techniques enhances the coupling between the gas network and power system. However, challenges remain in the joint optimal dispatch of electricity-gas systems. The dynamic model of the gas network, described by partial differential equations, is complex and computationally demanding for power system operators. Furthermore, information privacy concerns and limited accessibility to detailed gas network models by power system operators necessitate quantifying the equivalent energy storage capacity of gas networks. This article proposes a multi-port energy storage model with time-varying capacity to represent the dynamic gas state transformation and operational constraints in a compact and intuitive form. The model can be easily integrated into the optimal dispatch problem of the power system. Test cases demonstrate that the proposed model ensures feasible control strategies and significantly reduces the computational burden while maintaining high accuracy in the joint optimal dispatch of electricity-gas systems. In contrast, the existing static equivalent model fails to capture the full flexibility of the gas network and may yield infeasible results.

Related:

Interdependent Water & Electricity Networks

Electric Power Availability: Cold Weather Preparedness

Bei Mir Bist Du Shein

January 22, 2024
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https://www.facebook.com/groups/1047443902455259/permalink/1182140308985617/

Università del caffè

January 22, 2024
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Illycaffè — commonly known as “Illy” — is an Italian coffee company sets high standards in the art and science of coffee culture.  Founded by Francesco Illy in Trieste, Italy, in 1933, the company collaborates with artists to create innovative coffee-related products

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Un mondo fatto bene

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