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Regenerative elevator drive energy saving benefits

July 12, 2023
mike@standardsmichigan.com
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國立臺北科技大學

Actual measurement on regenerative elevator drive and energy saving benefits

Kun-Yu Lin – Kuang-Yow Lian

Department of Electrical Engineering, National Taipei University of Technology, Taiwan

 

ABSTRACT. The present study focuses on the effect on power consumption and analysis of the amount of regenerative power that could be generated after the regenerative drives of elevators have been installed. The elevator regenerative drives transform gravitational potential energy into electrical energy by utilizing elevators’ operation characteristics and weight difference between carriage and counterweights. The regenerative power is then fed back into electrical grid of a building and afford other electrical equipment to achieve energy saving. This paper investigates the operating principle of elevators, describe the mechanism of regenerating power, distinguish the terminologies of the power saving rate and the regenerative energy ratio, and finally use a power analyzer to monitor the experimental data of an elevator before and after installing a regenerative power drive.

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Stairway Lighting

July 11, 2023
mike@standardsmichigan.com
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Designing illumination for vertical ingress and egress paths requires reconciliation of competing requirements of safety economy: 

Consistent and Adequate Lighting: Shadows and dark spots should be minimized to prevent trips and falls.

Light Direction and Glare: Light fixtures should be positioned to avoid creating excessive contrast between steps.

Staircase Configuration: Staircases come in various shapes, sizes, and configurations, such as straight, curved, or spiral. 

Light Distribution:  Lighting should adequately cover the entire stair tread and riser area to provide clear visibility and depth perception.

Energy Efficiency:  Specifying energy-efficient light sources such as light emitting diodes and lighting controls such as motion sensors or timers.

Maintenance and Durability: Scaffolding safety should be a peak consideration.

Some of the foregoing challenges can be resolved with the use of handrail illumination but are accompanied by additional electrical wiring requirements. 

Chazen Museum of Art | University of Wisconsin

 

The parent standard in the United States for designing and building facilities for accessibility is ANSI/A117.1 Standard for Accessible and Usable Buildings and Facilities developed by the International Code Council.   During 2023 this title will be revised but until then he 2017 release is the stabilized edition:

FREE ACCESS (ICC DIGITAL CODE PLATFORM)

Many A117.1 concepts require coordination with the International Building Code.  We provide an example regarding stairway illumination below:

BCAC General 5 – IBC A117.1 Coordination 11-20-1027 File 16-124

We walked through this earlier in 2020.  It is noteworthy because the proposed safety concepts will likely require harmonization with NFPA and IEEE standards bibliography.  Committees usually take it upon themselves to get that right but getting it right means all committees need to work bi-directionally; action that is limited by time resources of volunteers.

Technical specifics in meeting the US Department of Justice requirements for accessibility is close coupled with A117 since it is incorporated by reference into federal law.   2021/2022 Code Development Cycle has been completed and another cycle has begun:

2024/2025/2026 ICC CODE DEVELOPMENT SCHEDULE

ICC (ASC A117) CONSENSUS COMMITTEE ON A117.1 04-27-2023 Minutes 31

Since the ICC catalog cuts across many disciplines we touch most titles almost every day at 15:00 UTC; open to everyone with the login credentials at the upper right of our home page.

 

Issue: [13-36] and [16-124]

Category: Architectural, Risk Management

Colleagues: Richard Robben


FYI: Errata to 2017 Edition:

Errata to ICC A117.1-2017

 

 


Educational Facility Lighting

July 11, 2023
mike@standardsmichigan.com

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Standards Illinois

July 9, 2023
mike@standardsmichigan.com

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“La Salle and Party Arrive at the Village of the Illinois” / George Catlin

We continue build out of our collaboration architecture for “code writers and vote-getters” begun at the University of Michigan in 1993.  We are now drilling down into state and local adaptations of nationally developed codes and standards that are incorporated by reference into public safety and sustainability legislation.

Sports Equipment & Surfaces

July 7, 2023
mike@standardsmichigan.com

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“The National Game” 1889 Arthur Streeton

 

 

 

Sport is the bloom and glow of a perfect health.

—Ralph Waldo Emerson

 

Sport programs, facilities and equipment support one of the most visible and emotionally engaging enterprises in the education communities.   These programs are central to the brand identity of the community and last, but not least, physical activity keeps our young people healthy in body and mind.

ASTM International is one of the first names among the 300-odd ANSI accredited standards setting organizations whose due processes discover and promulgate the standard of care for the design, construction, operations and maintenance of the facilities that support these enterprises.   The parent committee is linked below:

ASTM Committee F08 on Sports Equipment, Playing Surfaces, and Facilities

While ASTM bibliography is largely product-oriented, there are many titles that set the standard of care for sport enterprises and the accessories to these enterprises.  To identify a few:

ASTM 1487-17 Standard Consumer Safety Performance Specification for Playground Equipment for Public Use

ASTM F1774  Standard Specification for Climbing and Mountaineering Carabiners

ASTM F2060-00(2011) Standard Guide for Maintaining Cool Season Turfgrasses on Athletic Fields

ASTM F1703-13 Standard Guide for Skating and Ice Hockey Playing Facilities

ASTM F1953-10 Standard Guide for Construction and Maintenance of Grass Tennis Courts

ASTM F1081-09(2015) Standard Specification for Competition Wrestling Mats

ASTM F2950-14 Standard Safety and Performance Specification for Soccer Goals

ASTM F2461-16e1 Standard Practice for Manufacture, Construction, Operation, and Maintenance of Aquatic Play Equipment

When the General Requirements of an athletic facility construction project indicates: “Conform to all applicable standards” then, in the case of an sport facility, the ASTM title is likely the document that defines the standard of care from a product standpoint.  Interoperability of the products in a sport setting are quite another matter.

At the international level, we track action in ISO/TC 83 Sports and other recreational facilities and equipment administered globally by the Deutsches Institut für Normung e.V.   ASTM International is ANSI’s Technical Advisory Group for  this committee.

University of Maine

The ASTM standards development process depends heavily on face-to-face meetings — typically two times per year – in different parts of the United States.   The benefit of this arrangement lies in the quality of discussion among subject matter experts that results produced from face-to-face discussion.  The price to pay for this quality, however, lies in the cost of attendance for the user-interest in the education industry.   Relatively few subject matter experts directly employed by a school district, college or university who are charged with lowering #TotalCostofOwnership can attend the meetings.   Many of the subject matter experts who are in attendance at the ASTM meetings from the education industry tend to be faculty who are retained by manufacturers, insurance, testing laboratories, conformity and compliance interests.  (See our discussion of Incumbent Interests)

That much said, ASTM welcomes subject matter experts on its technical committees (Click here)  We encourage participation by end users from the education industry — many of them in the middle of athletic facility management organization charts.   The parent committee meets twice a year; after which we usually find public review redlines developed during those meetings to hit our radar.  The link to the schedule of face-to-face meetings appears below:

F08 Meetings

Note that the August 2020 cancelled but the November 2020 meeting still appears on the schedule.  It is likely that much of the committee work will be done online.

We are required to review draft ASTM consensus products with some care — owing to copyright restrictions — so we do it interactively online during teleconferences devoted to Sport.  See our CALENDAR for the next online meeting; open to everyone.

Issue: [7-7] [10-32] [13-165] [20-156] 

Category: Sport, Management, Risk Management

Contact: Mike Anthony, Jack Janveja, George Reiher, Richard Robben

Synthetic Turf Guidelines

 

Synthetic Turf Guidelines

July 7, 2023
mike@standardsmichigan.com
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The Synthetic Turf Council is a 501(c)6 non-profit trade association serving the synthetic turf industry.  Its vision is to improve the world through synthetic turf.  Its mission is to serve as the global forum to promote, develop, grow and advocate for the synthetic turf industry.   As a voice in its industry, it promotes the benefits of synthetic turf systems, it provides credentialing services and, for our purpose produces a bibliography of consensus products relevant to the education facility industry:

Synthetic Turf Council Technical Guidelines

You may communicate directly with the Council at the link below:

Synthetic Turf Council Contact Information

We do not find any open public consultations at the moment but we keep the Council’s consensus products in on the standing agenda of our Sport teleconferences. See our CALENDAR for the next online meeting.


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