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Refrigeration

October 5, 2023
mike@standardsmichigan.com
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Stony Brook University’s New Ultra-Low-Temp Walk-in Freezer Farm

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: 

  1. Food Storage: They provide space for perishable foods, such as fruits, vegetables, meats, dairy products, and prepared dishes. They help maintain the freshness and quality of ingredients by keeping them at the appropriate temperature.
  2. Temperature Control: They allow precise temperature control, ensuring that food items are kept at the correct temperature to prevent spoilage and bacterial growth. Different shelves or zones within the refrigerator can be set to various temperatures to accommodate various types of food.
  3. Extended Storage: Compared to reach-in refrigerators or freezers, walk-ins offer a larger storage capacity. This is especially beneficial for residential kitchens that need to store bulk quantities of ingredients, prepared dishes, and food supplies.  
  4. Organization: Walk-in refrigerators are designed with shelving, racks, and storage options that enable proper organization of food items. This organization makes it easier for kitchen staff to access ingredients quickly during busy service times.
  5. Prep Space: In addition to storage, some walk-in refrigerators are equipped with prep tables or counters. This feature allows chefs and kitchen staff to work directly within the cold storage area, making it more convenient to prepare ingredients and assemble dishes.
  6. Energy Efficiency: Modern walk-in refrigerators are designed with energy-efficient features, including well-insulated panels and energy-efficient compressors, helping to reduce energy consumption and operating costs.
  7. Compliance with Regulations: Many health and safety regulations require commercial kitchens to store perishable foods at specific temperatures. Walk-in refrigerators are designed to meet these regulatory requirements.

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.

 

Energy Standard for *Sites* and Buildings

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

Real Time Door Security System With Three Point Authentication

October 4, 2023
mike@standardsmichigan.com
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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.

 

Abiit sed non oblitus

October 2, 2023
mike@standardsmichigan.com

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Metering & Billing

October 2, 2023
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Appliances

October 2, 2023
mike@standardsmichigan.com

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salutariness clean hygiene

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

2026 National Electrical Code Workspace

Las lavanderas (1883) (Museo Nacional de Cataluña) de Joaquín Vayreda (español, 1853-1903)

Content Management Systems | WordPress

October 1, 2023
mike@standardsmichigan.com

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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:

  1. WordPress Coding Standards: WordPress has its own set of coding standards that developers are encouraged to follow. These standards cover aspects like indentation, naming conventions, and best practices. Adhering to these standards makes it easier for multiple developers to collaborate on a project and helps ensure the long-term maintainability of your code.
  2. Security: WordPress developers should follow security best practices to protect websites from vulnerabilities and attacks. This includes practices like data validation, escaping output, and regular updates to plugins, themes, and the core WordPress software.
  3. Performance: Efficient code is important for website speed and user experience. Developers should optimize their code, use caching, and minimize database queries to ensure the site loads quickly.
  4. SEO Best Practices: Developers should follow SEO (Search Engine Optimization) best practices when building WordPress sites. This includes using clean, semantic HTML, optimizing images, and ensuring mobile responsiveness.
  5. Accessibility: Building accessible websites is essential to ensure that all users, including those with disabilities, can access and use your site. WordPress has made efforts to make its core software more accessible, and developers are encouraged to follow accessibility guidelines.
  6. Plugin and Theme Development: If you’re developing plugins or themes for WordPress, there are specific guidelines to follow. These ensure consistency, compatibility, and security. For instance, the WordPress Plugin Handbook and Theme Developer Handbook provide detailed information on best practices.
  7. Documentation: Good documentation is important for the maintainability of your code. WordPress developers are encouraged to provide clear and detailed documentation for their themes and plugins.
  8. Version Control: Utilizing version control systems like Git is common for WordPress development to track changes, collaborate with other developers, and maintain code integrity.
  9. Community Involvement: WordPress has a strong and active community. Engaging with this community, attending WordCamps, and contributing to open-source projects can help you stay updated with the latest best practices and standards.
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