Poorly installed HVAC systems work twice as hard as they should and suffer from a wide variety of invisible health problems.

While hydronic systems have long been recognized for their energy-saving properties in HVAC and plumbing applications, designing an efficient hydronic system and narrowing down the necessary system components can be challenging.

The Gold award goes to a new computer application designed to help technicians save time and money and provide efficient HVAC equipment installation and diagnostics.

The gold winner can service, certify, and ship a combustion analyzer the same day it’s received.

Manufacturers are rolling out a wide array of new equipment that utilizes all types of refrigerants, providing end users with a number of new options to consider.

Although evaporative cooling is great at saving energy, it does consume some water, but the benefits on energy savings outweigh the water usage, which in some places is a scarce resource.

The NEWS honors the 2014 Dealer Design Award winners in the HVAC Commercial Equipment category.

A variable speed drive (VSD) controls the speed of the high-torque, direct-drive motor for optimal fan operation.

The 30-day ANSI public review period closes May 14.  

Intuitive usability helped the CS7500 win a Gold award in The NEWS’ 2019 Dealer Design Awards in the realm of Commercial Controls.

RetroFIT+ is the next iteration of the Belimo retrofit program, which offers online resources, including a product-selection tool, as well as personal support to provide quick and easy access to HVAC replacement solutions for actuators, valves, and sensors.

Every year, The NEWS introduces the latest cooling equipment available for the upcoming summer season in order to help contractors prepare for this busy period by doing the research that will help them to distinguish between brands. The coverage features specific information about each individual product as submitted by the manufacturers.

Many new testing and monitoring products were on display last month at the AHR Expo in Orlando, Florida, where manufacturers showcased and demonstrated their newest, smartest products.

Badger Meter won Gold in the Testing and Monitoring category for its Dynasonics® TFX-5000 ultrasonic clamp-on meter, which measures volumetric flow and heating/cooling energy rates in clean liquids, as well as those with small amounts of suspended solids or aeration, such as surface water or raw sewage.

NASRC has launched a workforce development program that focuses on recruitment, training, and retention, in order to combat the critical shortage of refrigeration technicians. 

Posted by Gordon Fyodor Lyon on May 05

In this episode, Arno and Michael take a look at Design by Contract, a programming technique formalized by Bertrand Meyer. The idea is that an interface is more than method signatures - it is also about specifying the expected behavior that implementations must provide. While some languages include direct support for this style of programming, it is a useful mindset when desiging interfaces even without such language features.

This episode is a discussion with Jim Des Rivieres about APIs: How to design good APIs, the role of the documentation/specification in APIs, API evolution and other relevant topics.

For Episode 200 of Software Engineering Radio, Diomidis Spinellis interviews Markus Völter, the podcast’s founder. Markus works as an independent researcher, consultant, and coach for itemis AG in Stuttgart, Germany. His focus is on software architecture, model-driven software development and domain specific languages as well as on product line engineering. Markus also regularly publishes articles, […]

Travis Kimmel and Kevin Goldsmith discuss the correspondence between organizational design and software architecture. Their conversation covers: what Conway’s Law is; Kevin’s experiences in different organizational structures (e.g., Avvo, Spotify, Adobe, and Microsoft) and how those structures influenced the software architecture; what the “Reverse Conway Maneuver” is and how organizations can leverage it; how organizations can evolve existing architectures.

Felienne interviews Marian Petre & André van der Hoek on their book ‘Software Design Decoded’, which contains 66 scientifically backed insights for the design process.

István Lam of Tresorit talks with host Kim Carter about GDPR (the EU General Data Protection Regulation, which has been described as “the most important change in data privacy regulation in 20 years.”)  The discussion covers terminology, planning, implementation, users' rights regarding their personal data, managing personally identifiable information (PII) across an organization, and required documentation. István talks about establishing the intent of different types of PII; when data can be shared or sold, when PII can be stored; storage of backups, and the ability to reveal, modify, or remove all of a customer's PII.

Abhinav Asthana, a founding partner and CEO of the API development tool Postman, discusses API design and testing, where to start, which types of APIs to offer, what tools you can use, what features to expose and what is his favorite API to reference.

Sam Procter of the SEI discusses architecture design languages, specifically Architecture Analysis and Design Language, and how we can leverage the formal modeling process to improve the security of our application design and improve applications overall.

Arin Bhowmick, Global Vice President and Chief Design Officer at IBM, discusses why and how UX design for enterprise applications is different than for consumer applications.

John Ousterhout, professor of computer science at Stanford University, joined SE Radio host Jeff Doolittle for a conversation about his book, A Philosophy of Software Design. They discussed the history and ongoing challenges of software system design, especially the nature of complexity and the difficulties handling it. The conversation also explored various design concepts from the book, such as modularity, layering, abstraction, information hiding, maintainability, and readability.

Jonathan Shariat, coauthor of the book Tragic Design, discusses harmful software design. SE Radio host Jeremy Jung speaks with Shariat about how poor design can kill in the medical industry, accidentally causing harm with features meant to bring joy...

We talk with John deVadoss about the philosophies underlying the development of .NET and Azure software. We discuss the "Fiefdoms and Emissaries" concept of building loosely coupled systems, talk about strengths and drawbacks and how to build services...

A signed version of Newsround is available to watch every weekday for children who use British Sign Language.

Want to know how sleep "resets" your brain? How memories are formed and retained?  Then watch The Benefits of a Good Night's Sleep, embedded below, and learn how sleep balances and regulates the body's vital systems which, in turn, affects declarative and procedural memory.

This short TED-Ed lesson by Shai Marcu is an important topic as school starts and students will soon be staying up late or all night in order to cram for tests and other educational requirements. Marcu goes into detail describing the neurological importance of 8 hours of sleep, but the application is interesting as going to sleep three hours after memorizing math formulas (declarative memory) and one hour after practicing music scales (procedural memory) is the most ideal.

I'm left wondering what I might have accomplished if my sleep and learning patterns were consistent during my formative years...
    

Nowadays, if you do not consider harmonics distortion when designing a new network, you missed the whole point of the network design. Yes, really. The sooner you realize that harmonics problems are on the rise, the better. Modern power networks... Read more

The post Practical design knowledge in harmonics distortion and power factor correction (PFC) appeared first on EEP - Electrical Engineering Portal.

To achieve the best overall outcome in a lighting installation, it is important to avoid the tendency of rushing straight into luminaire selection before determining more broadly what is required from the system. The use of a structured design process... Read more

The post 7 key steps in lighting design process appeared first on EEP - Electrical Engineering Portal.

This technical article discusses criteria and requirements for designing protection systems for busbars in HV/EHV networks. One of the most critical requirements is reliable busbar relay protection to assure power system integrity during fault conditions. This requirement is further emphasized because... Read more

The post Design issues in HV busbar protection systems (substation topology and DC power supply) appeared first on EEP - Electrical Engineering Portal.

High voltage power substations are complex networks of power and control connections, represented by design elements like- Single Line Diagrams, layout and block diagrams, schematics, logic diagrams, schedules, and so many more. Wiring diagrams and schematics, in a sense, are... Read more

The post Tricks in designing and analyzing schematics and diagrams of high voltage substations appeared first on EEP - Electrical Engineering Portal.

The process of designing a substation usually begins with the general substation layout, which is dependent on the required safety clearance and insulation withstand, as well as the permissible loads delivered to substation equipment and structures. The permissible loads, in... Read more

The post Good practice in the design of concrete and steel structures in power substations appeared first on EEP - Electrical Engineering Portal.

Welcome to this comprehensive technical article that delves into the intricacies of electrical schematics, shedding light on crucial elements such as loops, wire connections, auxiliary contacts, MCBs, contactors, circuit breakers, isolators, earth switches, and terminal blocks. In the world of... Read more

The post Fundamental concepts of schematic drawings: Going deeper into analysis and design intricacies appeared first on EEP - Electrical Engineering Portal.

The majority of utilities are normally extremely well aware of the economic aspects and savings that can be obtained at all stages of the transformer’s life cycle. This is because the purchase of a transformer involves a very high capital... Read more

The post 11 factors that significantly influence the transformer price (Be careful when specifying) appeared first on EEP - Electrical Engineering Portal.

Wastewater pumping stations are very common application examples of three-phase induction motors. There are numerous varieties of power supply and control logic, depending on exact conditions in the place of installation, the role of the pumping station inside a sewer... Read more

The post Design and control considerations for an example of the waste water pumping station appeared first on EEP - Electrical Engineering Portal.

Hydropower plants, one of the major sources of energy in countries with an abundance of water resources, have unique generation and power evacuation characteristics. From mere kilowatts to thousands of megawatts, they come in every shape and size. In this... Read more

The post Major steps in designing generation and power evacuation in large hydropower plants appeared first on EEP - Electrical Engineering Portal.

A black start refers to the ability of a power plant to restart itself using its own resources in the event of a complete shutdown and isolation from external power sources. Initiating a black start at an industrial plant might... Read more

The post Design engineering and the black start of a power plant appeared first on EEP - Electrical Engineering Portal.

At low voltage level, SCADA applications are usually used for process control and monitoring of equipment. Furthermore, incoming circuit breakers or switch disconnectors inside large LV switchboards may also be operated remotely, by the command given from the SCADA working... Read more

The post Field devices and signals used for LV SCADA operations appeared first on EEP - Electrical Engineering Portal.

General recommendation is to properly design and implement the facility’s grounding system to avoid unwanted involvement of ground loops with the operation of the equipment. This kind of approach can also eliminate the need to consider equipment modifications and to... Read more

The post 8 tips to avoid ground loops when dealing with signal level circuits appeared first on EEP - Electrical Engineering Portal.

There are at least two safety requirements that medium-voltage switchgear MUST fulfil: an interlocking system and an arc protection system. Yes, these two systems are crucial in terms of safety because they protect not only the operator and other substation... Read more

The post Switchgear interlocking system and arc protection that you MUST consider in the design appeared first on EEP - Electrical Engineering Portal.

This technical article covers some specific considerations (modern power supply, electric distribution, transportation, lighting controls, and communication systems) for a few most common type of commercial facilities such as banks, colleges and universities, fire stations, health care facilities and office... Read more

The post Specific electrical design tips for a few most common types of commercial facilities appeared first on EEP - Electrical Engineering Portal.

For the last sixty years, gas-insulated substation (GIS) has been used in applications related to substations all over the world, and this use of the technology is becoming an increasingly common asset for those who make use of substations. GIS... Read more

The post Choosing between AIS and GIS substation design: Factors you MUST take into consideration appeared first on EEP - Electrical Engineering Portal.

This technical article provides a top-to-bottom overview of Sun Microsystems’s Santa Clara, California datacenter from electrical design aspect. Sun’s electrical design tour of Santa Clara datacenter is done through a series of single line diagrams. These diagrams illustrate the various components... Read more

The post Electrical Design Project Of Sun’s Datacenter In Santa Clara, California appeared first on EEP - Electrical Engineering Portal.

This technical article explains various aspects of the application of medium voltage switchgear and highlights the considerations for the selection of suitable circuit breakers for different applications. Medium voltage switchgear, commonly known as MV switchgear, play a significant role in... Read more

The post Medium voltage switchgear: Important design considerations and applications appeared first on EEP - Electrical Engineering Portal.

The first choice for service and distribution voltage is almost always 480 volts. Why is that? Well, it’s because it’s traditional, it has a safe design and specifications are already written around 480 V. UPS and backup aggregate equipment are... Read more

The post How to design the power supply for data centres and airports while megawatts of loads rise fast appeared first on EEP - Electrical Engineering Portal.

The installation of a new MV/LV electrical substation is often part of a more global project, and it is not always the subject of very detailed attention. However, the consideration of simple and practical criteria is not always dictated by... Read more

The post Thoughtful considerations to design MV/LV distribution substations for extended service life appeared first on EEP - Electrical Engineering Portal.