The proposed new approach to chilled water HVAC systems promises to provide significant capital cost savings, energy cost savings, and a path to eliminate CO₂ emissions.

Timely refrigeration repairs are crucial to avoid product loss; temporary fixes can sometimes keep systems running until parts arrive.

When choosing a vacuum pump, its pays to find a unit that makes oil changes convenient.

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.  

The moment for geothermal seemed to have arrived several times since the 1970s. A number of factors are forecasting wider use of this type of heating and cooling solution.

In the latest episode of The NEWSMakers podcast, Kyle Gargaro, editorial director for The ACHR NEWS, talks to WaterFurnace CEO John Thomas.

Catch up on the latest headlines in our NEWSRoom video series.

Kyle Gargaro, editorial director, The ACHR NEWS, traveled to Oklahoma City to talk with Climate Control Group COO Kevin McNamara about the state of the geothermal industry.

The growing electricity demands being placed on the country’s century-old grid are resulting in an increased number of unexpected power outages across the U.S.

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

United Technologies Corp. (UTC), the parent company of Carrier Corp., recently opened the new UTC Center for Intelligent Buildings in Palm Beach Gardens, Florida.

Corporate America is making pledges to take action against climate change, which is opening up opportunities for HVAC contractors.

Since they don’t have to stay in one place, portable cooling units have been known to show up in some pretty unique places. Here’s a closer look at how portable units are serving in some outside-the-box applications.

The benefits of portables, including speedy implementation, reduced downtime, and cost-effectiveness, are continuing to gain recognition from end users. And, as end users experience these benefits and the resulting uptime, industry experts expect the portable market to continue to heat up.

HVAC contractors in different climates and regions all over the U.S. agree that irregular upkeep is the most problematic issue when it comes to rooftop unit failure.

There’s no doubt the connectivity of mobile devices has made our personal lives more convenient, but now they’re also helping make technicians more efficient, thanks to tool manufacturers developing wireless-enabled devices and test and measurement apps for download.

The Pelican™ case housing provides a watertight, crushproof, dust-proof enclosure with heavy-duty deflector ribs for extra protection from shocks and impacts.

Summer cooling season is in full gear, which means that both technicians and their tools are being kept extremely busy.

Investing in the right tools will save your employees’ time and avoid delaying repairs in the rush of summer.

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Frank Bacchetta of Total Comfort Group talks about how his company uses data to improve the customer experience.

People are still pinching pennies and choosing repairs, but there are ways for contractors to sell new equipment, even when it’s more expensive.

“It's simple. If you want to encourage women to prosper and develop, provide them with some prospering women to inspire them to develop.”

Though getting enough people to work in the HVAC industry has been an issue for quite a while, women have been greatly underrepresented. According to the U.S. Bureau of Labor Statistics, only 2% of the HVAC workforce is women. Amy O’Grady from Women in HVACR talks about what needs to happen for more women to get into the HVAC industry.

The upcoming expo will preview the future of the HVACR industry, with exhibitors from around the globe gathering to showcase new and upgraded products, technologies, and innovations.

HiberSense Inc. appointed Chris Lawson as channel sales manager for the U.S. market.

BlocPower, a climate technology company focused on greening America's buildings, announced a fundraising round of $150 million, including more than $24 million of Series B corporate equity led by VoLo Earth Ventures and $130 million of debt financing led by Goldman Sachs.

Throughout March, voters will help the staff at Peterman Brothers select four charity partner organizations for 2023.

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This episode is a conversation with Bruce Powel Douglass on real time systems. We started by discussing what real time software is, and explored the difference between hard and soft real time. We then looked at different scheduling strategies, and the meaning of terms like urgency and importance in the context of scheduling. Next was a discussion of typical architectural styles for real time systems and how architectures are described in this context. This led us to a discussion about the importance of modeling, formalisms and languages as well as the role of automatic code generation from those models. We then looked at how to model QoS aspects and the role of SysML for modeling real time systems. We then had a brief look at which programming languages are used these days for real time systems and the role of static analysis to determine various properties of those programs in advance. The last part of the discussion focused on some best practices for building real time systems, the challenges in distributed real time systems and how real time systems can be tested effectively.

In this episode, Michael and Markus talk about software components. We first looked at a couple of attempts at defining what a component is. We then provided our own definition that will be used in the rest of the episode. We then looked at the promises of component-based development: why are components useful? We then discussed some of the typical metadata components should specify to make them useful. We discussed to some extent typical variations in component models. The next topic was the separation of concerns between the component functionality and functionality provided by the component's execution environment (aka. container). We then compared components with other (more or less) related technologies such as OO and SOA. We concluded the episode with the notion of architecture as language, where you use a formal DSL to describe a system's architecture. Components are the basic building block for this approach.

Recording Venue: Skype Guest: Eric Lubow Eric Lubow and Robert discuss polyglot persistence, a term used to describe systems that incorporate multiple specialized persistent stores rather than a single general-purpose database.  Eric provides insights into the forces driving this trend:  including diverse data usage patterns, low latency, and increasing volumes of data.  The emergence of […]

Leslie Lamport won a Turing Award in 2013 for his work in distributed and concurrent systems. He also designed the document preparation tool LaTex. Leslie is employed by Microsoft Research, and has recently been working with TLA+, a language that is useful for specifying concurrent systems from a high level. The interview begins with a […]

Guest Udi Dahan talks with host Robert Blumen about the CQRS (command query responsibility segregation) architectural pattern. The discussion begins with a review of the command pattern. Then a high-level overview of CQRS, which consists of a separation of a command processing subsystem that updates a write model from one or more distinct and separate, […]

John Allspaw CTO of Etsy speaks with Robert Blumen about systemic failures and outages. Why they cannot be totally prevented, how to respond, and what we can learn from them.

Postgres developer Bruce Momjian joins Robert Blumen for a discussion of the SQL query optimizer in the Postgres RDBMS. They delve into the internals of query planning and look at how developers can make it work for their apps.

Simon Riggs, founder and CTO of 2nd Quadrant, discusses the advanced features of the Postgres database, that allow developers to focus on applications whilst the database does the heavy lifting of handling large and diverse quantities of data.

Joel Spolsky on founding Stack Overflow, “land grabs” vs. “bootstrapping with profitability”, raising more money using “proof points”, what developers and companies get massively wrong, choosing your next job, and how to ask and answer on Stack Over

Torin Sandall of Styra and Open Policy Agent discussed OPA and policy engines and how they can benefit software projects security and compliance. Host Justin Beyer spoke with Sandall about the benefits of removing authorization logic from your application...

Sara Leen discusses localizing, porting, and modernizing Japanese games with Jeremy Jung.

Andy Powell is the CISO of AP Moller Maersk and discusses the 2017 cyber attack that hit the company and the lessons learned for preventing and recovering from future attacks.

Nigel Poulton, author of The Kubernetes Book and Docker Deep Dive, discusses Kubernetes fundamentals, why Kubernetes is gaining so much momentum, deploying an example app, and why Kubernetes is considered "the" Cloud OS.

Thomas Richter is the founder of Swarm64, a Postgres extension company designed to boost performance of your Postgres instance. This episode examines the internals of Postgres, performance considerations, and relational database types.

This week, Postgres server developer Bruce Momjian joins host Robert Blumen for a discussion of multi-version concurrency control (MVCC) in the Postgres database. They begin with a discussion of the isolation requirement in database transactions (I in ACID); how isolation can be achieved with locking; limitations of locking; how locking limits concurrency and creates variability in query runtimes; multi-version concurrency control as a means to achieve isolation; how Postgres manages multiple versions of a row; snapshots; copy-on-write and snapshots; visibility; database transaction IDs; how tx ids, snapshots and versions interact; the need for locking when there are multiple writers; how MVCC was added to Postgres; and how to clean up unused space left over from aged-out versions.

Ant Wilson of Supabase discusses building an open source alternative to Firebase with PostgreSQL. SE Radio host Jeremy Jung spoke with Wilson about how Supabase compares to Firebase, building an API layer with postgREST, authentication using GoTrue...

Tim Post of echoreply.io discusses Rubber Duck Debugging, a way to wrap your head about problems and solutions. Host Felienne spoke with Post about Rubber Duck debugging, and how it can help you to find answers to complex problems.

Brian Campbell, Distinguished Engineer at Ping Identity discusses cryptographic defences against stolen tokens for the OAUTH2 protocol with host Priyanka Raghavan. The discussion explores various subtopics such as the history of Proof of possession...

Vidal Graupera, an Engineering Manager at LinkedIn, speaks with SE Radio’s Brijesh Ammanath about the importance of managers' one-on-one meetings with direct reports. They start by considering how a 1:1 meeting differs from other meetings...