According to the Environmental Protection Agency (EPA), a typical food retail store leaks an estimated 25 percent of refrigerant, or approximately 1,000 pounds, annually.

A new survey released by Daikin studied the opinions and habits of more than 1,200 people from 12 cities across the globe when it comes to their a/c systems.

Since its inception, air conditioning has saved lives and driven technological innovation – take a deep dive into its transformative role.

Evaporative cooling is growing in demand as cooling needs are expanding.

Renewable energy enthusiasts now have reason to celebrate: EVAPCO offers a solar-powered evaporative cooling tower. The SUN cooling tower is paired with PV panels to dramatically reduce energy consumption.  

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 rapid expansion of data centers has raised concerns about their massive energy use and carbon footprint. However, adopting sustainable HVAC solutions can reduce a data center’s environmental impact and energy consumption.

By splitting the absorption process into two steps, lithium bromide solution concentrations are lower in the system, enabling lower hot water temperatures within the generator, lower hot water flow rates, and the elimination of crystallization risk within the chiller.

Smart tools continue to grow in the HVACR industry, spurring manufacturers to create connected, digital devices that will make work in the field less manual and more automatic.

Taking home the golden honors in the Testing and Monitoring category of this year’s Dealer Design Awards is the T6 Electrical Tester from Fluke Corp. The product, first introduced to the marketplace in September 2017, went through years of research before launching.

The most important features of electronic measuring devices have been established in customer surveys and are discussed in this article.

Thermostats are like other pieces of interactive equipment: People are thrilled by each development but move on quickly when the next feature comes along.

As people spend more time at home due to the lingering effects of the pandemic, the buzzwords that come to mind are comfort and convenience. The influx of smart controls and thermostats can help fulfill these desires.

Programmable thermostats that can be accessed through an internet device are old hat. Here are just a few of the residential HVAC controls products featured at the Georgia World Congress Center, the host venue for this year’s Expo.

Thermostats have come a long way since the first thermostat hit the market. So, it makes sense that consumers demand more from the technology’s capabilities than ever before.

While ductless HVAC is not without its flaws, the technology has evolved exponentially to now provide customers with numerous configurations at affordable prices appropriate for nearly every application, which is music to the ears of entrepreneurial contractors.

Ensuring a vacuum pump system is evacuated and free of air, nitrogen, moisture, and other contaminants is a crucial step to keep the system running optimally.   

Cleaning evaporator coils in a walk-in cooler can be challenging, but it needs to be done in order to keep the system operating efficiently.  

At a recent IGSPHA meeting, tips were shared on how HVAC contractors can become geothermal powerhouses.

Musk confirmed that his company could make use of their current heat pump technology to develop a smart HVAC system for home use.

Determining the right pump to save energy in a given application can be broken down into three general steps.

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

Amy Harlan, who has an extensive background in electronics and device connectivity, is the new business development manager for device connection technology at the global electronics technology firm.

Equipped with an Oilon LN30 ultra-low NOx burner and Nationwide’s Eagle PLC-based Control System, the 250 hp package boiler achieved average emissions performance of 5 ppm NOx and 0 ppm CO (corrected to 3% O₂) during third-party testing.

Emerson continues to evolve its equipment lines in an effort to introduce its technologies to a broader customer base.

Learn how HVAC companies can increase retention by giving their employees a stake in the company’s success through phantom stock plans.

AI technology can help HVAC contractors monitor each sales and repair call.

Zoning remains a small but growing segment of the overall HVAC market, representing less than 5 percent of equipment sales.

Products are emerging that help simplify homeownership.

What is the best approach to providing a holistic smart home experience for consumers?

Due to a lack of training, time constraints, and numerous other reasons, many HVAC contracting companies are not performing combustion testing, potentially compromising customers’ safety.

Posted by Dave Aitel via Dailydave on Sep 30

In this Episode, Eberhard and Markus provide an introduction to Model-Driven Software Development. Since the discussion turned out to be too long, we separated things into two episodes, thus Episode 6 will be the second part of this discussion. In this first part we disucsss core concepts of MDSD, the relationship to MDA, and hint at a couple of tools.

After discussing some of the more technical aspects of MDSD in the last episode, we take a look at other important topics in this one. This includes some tips on how to introduce MDSD into projects and how the development process has to be adapted for this to work, as well as a look at the return on investment for MDSD. The relationship of MDSD and Agile software development is also discussed. Finally, we take a look at offshoring in the context of MDSD.

Eric Evans is the author of the well known Domain-Driven Design book. In his day job he works as a consultant and coach for his own company, Domain Language. In this interview, Eric talks about the essential building blocks of domain-driven design as well as about a set of best practices on how to address complex projects. In a third part, he elaborates on the relationship of domain-driven design and MDSD/MDA.

In this episode Arno and Alex talk about the basics of software development processes. They discuss why and when software development processes are needed and also why some developers don't like them. They discuss the theories behind different processes and talk about defined vs empiric processes in general. This episode is the first in a row that will later on describe specific processes like eXtreme programming or the unified process.

This episode is an interview with Steve Vinoski. Steve works as the Chief Engineer for IONA. He's what you'd call a middleware guru, he was for example deeply involved with CORBA. So, this interview centers mainly around middleware. We begin by talking about his own history wrt. middleare and ORBs and how ORBs evolved over time. We then talked about whether coarse-grained, stateless components might be a better abstraction for distributed systems than "objects". We then covered the future of CORBA, it's use in ethe embedded space as well as the practical relevance of the POSA patterns when building ORBs. Then we switched topics and addressed the role of web services as a "middleware middleware" and the maturity of WS-* specifications. We then looked at what Steve is working on these days, which is e.g. the Advanced Message Queueing Protocol (AMQP) as well as dynamic languages. We concluded the interwiew with his view on SOA.

In this episode, we're talking to Obie Fernandez about agile DSL development in Ruby. We started our discussion by defining what a DSL is, the difference between internal and external DSLs as well as the importance of the flexibly syntax of the host language in order to make DSLs worthwhile. We then looked at a couple of real world examples for DSLs, specifically, at Business Natural Languages. We then progressed to the main part of the discussions, which centered around the features of Ruby that are important for building DSLs. These include the flexible handling of parentheses, symbols, blocks as well as literal arrays and hashes. We then discussed Ruby's meta programming feautures and how they are important for building DSLs: instantiation, method_missing callback, class macros, top level functions and sandboxing. Features like eval, class_eval, instance_eval and define_method are also important for DSLs in Ruby, as well as using alias_method for simple AOP.

In this episode we talk with Jeff DeLuca about Feature Driven Development (FDD). As one member of the agile methods family FDD is not so famous as Scrum or Extreme Programming but is becoming more and more popular, especially for situations where you have fixed price contracts. As the inventor of FDD Jeff gives short introduction to the method itself, talks about the basic ideas behind FDD and discusses with us how FDD relates to other members of the agile family.

In this episode, we talk with Kevlin Henney about the C++ programming language. We look at the history and the culture of the language, and how it went through several phases in its evolution. We also take a look at some of the special language features of C++ and their overall influence.

In this Episode, Arno talks with Oliver Jucknath about the art of writing computer games. A lot of myth is attached to this area of computing, and while a game technically is just another program, it is written in a different context than typical business applications. This is true at the code level, where aggressive optimization is a focus throughout development. It also applies at the team level, where collaboration between specialists is pronounced. And the business context is different as well, which in turn influences the development effort as a whole.

In this episode, Markus talks to Rebecca Wirfs-Brock on what she has learned from architecture reviews. This is a very complement to the earlier episode on architecture evaluation.

In this episode, Allan shares his insights about how learning is a necessary part of software development. He covers the personal as well as the team and the organizational level and offers practical advice.

This is another episode recorded at OOP 2009, thanks to SIGS Datacom and programme chair Frances Paulisch for making this possible. Here is the abstract from the conference program: Many software systems have fragile architectures that are based on brittle assumptions or rigid architectures that reduce options and make change difficult. On the one hand, an architecture needs to be fit for the present day, suitable for immediate use, and on the other it needs to accommodate the future, absorbing reasonable uncertainty. However, an approach that is overly focused on today's needs and nothing more can create an inflexible architecture. An approach that becomes obsessed with possible future changes creates an overly complex architecture that is unfit for both today's and tomorrow's needs. Both approaches encourage an early descent into legacy for a system. The considerations presented in this talk reflect an approach that is more about thinking in the continuous present tense than just the present or the future tense. This includes principles from lean thinking, practices common in agile processes and techniques for loosely coupled design.

Michael and Markus discuss what makes a good R&D manager and how to potentially become an R&D manager. You will learn what some of the essential skills are, what the challenges are, and what the 'mission/vision/strategy thing' is actually good for.

In this episode Michael talks with Bas Vodde about how to apply agile principles to large and distributed development organizations.

Sven Apel explains why developing software in a feature-oriented manner is so vital for us as software engineers and why objects are simply not enough.

Recording Venue: University of Passau Guest: Sven Apel Host: Stefan In this second episode on Feature-Oriented Software Development (FOSD), Sven Apel gives us an overview of programming language and tool support for FOSD. He introduces the Eclipse-based FeatureIDE which covers important phases of the FOSD process, namely domain implementation as well as configuration and generation. […]

We discuss characteristics and performance properties of modern games and outline the challenges for software development.

Recording Venue: Phone Guest: Steve Will IBM i (formerly known as OS/400) is an advanced object-based operating system by IBM that runs thousands of businesses around the world.  Steve Will, the Chief Architect of IBM i speaks with us about the history, technical features, and underlying architecture discussing the concepts of Single Level Store, integrated […]