Walk-in refrigerators play a crucial role in food preparation areas in education communities; residence halls, hospitals, research laboratories and large football stadium not the least of them:
ASHRAE 15 sets the standard of care for safe design, construction, installation and operation of refrigeration systems. It establishes safeguards for life, limb, health, and property and prescribes safety requirements. This standard does not apply to refrigeration systems using ammonia (R-717) as the refrigerant. (ASHRAE Standard 34-2022, Designation and Safety Classification of Refrigerants covers that domain.)
As of this posting we find only one markup on proposed changes to ASHRAE 15; that one having more to do with correlation with changes to the one of the ASME Boiler Code (a lower tier priority for us).
Proposed Addendum a to Standard 15-2022, Safety Standard for Refrigeration Systems
Consultation on that markup closes October 22, 2023.
Other ASHRAE committees post their consultations at the link below:
Online Standards Actions & Public Review Drafts
We maintain the ASHRAE catalog on the standing agenda of nearly every topic we cover every day. See our CALENDAR.
Issue: [Various]
Category: Mechanical, Electrical, Energy Conservation, Facility Asset Management, US Department of Energy, #SmartCampus
Colleagues: Mike Anthony, Larry Spielvogel, Richard Robben
The basis for modern refrigerators was created in 1755 AD, when Scottish professor William Cullen designed a small refrigerating machine. This machine had a pump and a container of ether. (24/26) pic.twitter.com/nw7GiSgbIE
— Bucknell_Thermo (@BucknellThermo) April 24, 2020
Real Time Door Security System With Three Point Authentication
N. S. Vinoth Kumar – Lakshmi Narayanan K – Bharathi V – Naresh R
College of Engineering and Technology, SRM Institute of Science and Technology, Chennai
Vasim Babu M
KKR & KSR Institute of Technology and Sciences, Vinjanampadu, Andhra Pradesh
Abstract: A smart way to solve the common problem of conventional door-locking system is proposed using conventional lock key methodology and it can be cloned and used by anyone. The proposed system is to make a secure door lock security system with two factor authentications. The user has to use Radio Frequency Identification tag. The tag’s data will be saved in a database. When the tag is read by the Radio Frequency Identification reader, the user has to input a pass code. After the pass code is entered, the user will receive a One-time password on his mobile device to unlock the door. The biggest advantage of proposed system is that the introduction of two factor authentication to gain the access to the door, which makes it more secure.
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Most sanitation technologies are driven by electrical power — motors, pumps. heating and cooling elements, etc. The trajectory of product innovation, installation and maintenance practices are guided by electrical power capacity and availability.
Article 422 of the National Electrical Code covers safe wiring practices and is on the front end of new revision cycle. Comments on Public Input for the 2026 Revision will be received until 28 August 2024
WordPress is a popular open-source content management system (CMS) used for creating websites and blogs. It was first released in 2003 and has since become one of the most widely used website-building platforms in the world. WordPress is known for its ease of use, flexibility, and a vast ecosystem of plugins and themes that extend its functionality and design options. It’s often used by both beginners and experienced developers to build websites of various types, from simple blogs to complex e-commerce sites and corporate web applications.
When it comes to coding standards in WordPress, there are several key points to consider:
New update alert! The 2022 update to the Trademark Assignment Dataset is now available online. Find 1.29 million trademark assignments, involving 2.28 million unique trademark properties issued by the USPTO between March 1952 and January 2023: https://t.co/njrDAbSpwB pic.twitter.com/GkAXrHoQ9T
— USPTO (@uspto) July 13, 2023
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