Troubleshooting PSC fan motors is a common task for service technicians, and failures tend to be either electrical or mechanical.

Soap bubbles have long been thought of as the standard method for leak detection, but times, and technology, are changing.

In this month’s troubleshooting problem, the equipment is a split system that’s approximately 8 years old.

Selecting a VFD that features remote startup can decrease the number of individuals needed onsite and provide valuable safety benefits.

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.  

Posted by Xen . org security team on Nov 12

Posted by Andrew Cooper on Nov 12

Posted by Demi Marie Obenour on Nov 12

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

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.

The ManTooth™ Wireless Digital Pressure/Temperature Gauge from Yellow Jacket Products Division, Ritchie Engineering Co., is this year's gold winner in the Electronic Tools category.

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

HVACR technicians are special individuals. They have the intelligence, aptitude, and knack for problem-solving. In fact, they are expected to know how to diagnose and troubleshoot equipment of all types, sizes, and ages.

Posted by John via Snort-sigs on Oct 29

A visit to an ASHRAE event 30-plus years ago introduced David Heckler to VRF technology, and the distributor was won over. VRF systems now make up about half of his company’s business.

Here in the Santa Fe, New Mexico, area — and all across the nation, it seems — everyone wants to be “green.”

How many of standard HVAC sales include add-ons like a humidifier, air cleaner, HRV/ERV, UV lights, or zoning?

The equipment in this month’s troubleshooting problem is an electric furnace that has been in service for at least ten years and has no service history.

The ACHR NEWS visited Flame Furnace in Warren, Michigan to learn how to do maintenance and basic troubleshooting on a furnace.

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.

Our new blog has been launched today. Stay focused on it and we will try to keep you informed. You can read new posts on this blog via the RSS feed.

Designers, programmers, engineers, we must all return to programming! Very few programmers tend to see their (sometimes rather general) difficulties as the core of the subject and as a result there is a widely held consensus as to what programming is really about. If these notes prove to be a source of recognition or to give you the appreciation that we have simply written down what you already know about the programmer's trade, some of our goals will have been reached.

This Episode is a round table discussion about Ultra-Large Scale Systems. In 2006, a number of authors (among them our guests Linda Northrop, Doug Schmidt, Kevin Sullivan, and Gregor Kiczales) have produced a report that addressed the following question: Given the issues with today's software engineering, how can we build the systems of the future that are likely to have billions of lines of code? In this episode, our guests discuss many of the issues that arise from this kind of system and provide an overview of the research areas that should be investigated in order to tackle the challenge. If you want to get more detailed information, you can read the ULS Report (PDF).

This is a roundtable discussion on model-driven software develoment and product line engineering. It was recorded at the Model-Driven Development and Product Lines: Synergies and Experience conference in October 2006 in Leipzig. The panelists are:

• Axel Uhl, SAP
• Danilo Beuche, Pure Systems
• Juha Pekka Tolvanen, MetaCase
• Tom Stahl, b+m
• Ruediger Schilling, Delta Software Technology

In this Episode we're discussing patterns for small memory software with the authors of the like-named book Charles Weir and James Noble. We look at various aspects of the small memory problem: How can you manage memory use across a whole system? What can you do when you have run out of primary storage? How can you fit a quart of data into a pint pot of memory? How can you reduce the memory needed for your data? How do you allocate memory to store your data structures? Answers to all those questions are provided in this Episode, and of course in their book.

This episode is a conversation with Gilad Bracha about Newspeak, type systems in general and optional/pluggable types in particular. It was recorded during DSL Devcon in the gardens of the Microsoft campus, and thanks to Gilad's "speaking like a book" way of talking it is published completely unedited :-)

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.

Johannes Thönes interviews Jez Humble, senior vice president at Chef, about continuous delivery (CD). They discuss continuous delivery and how it was done at Go, CD, and HP firmware; the benefits of continuous delivery for developers; Conway’s law and cross-functional teams; scary releases and nonscary releases; fix-forward, blue-green deployments, and A/B testing; origins of continuous […]

Kishore Bhatia talks with Kieren James-Lubin about Blockchains. Topics include Blockchains, Cryptocurrency, Bitcoin, Ethereum, Smart Contract development with Solidity, ICO’s and Tokens.

Lin Clark speaks to Matthew Farwell on WebAssembly

Michael Hausenblas talks with host Kim Carter about topics covered in Michael’s ebook Container Networking, such as single vs. multi-host container networking, orchestration, Kubernetes, service discovery, and many more. Michael and Kim also discuss the roles that IPTables plays, how the allocation of IP addresses is handled, along with the assignment of ports. Overlay networks are covered along with topics such as the open Container Network Interface (CNI).

Dr. Andrii Gakhov, author of the book Probabilistic Data Structures and Algorithms for Big Data Applications talks about probabilistic data structures and their application to the big data domain with host Robert Blumen.

Motivation comes through relationships, safety, and environments which allow everyone to contribute.

Michael L. Perry discusses his recently published book, The Art of Immutable Architecture, distinguishing immutable architecture from other approaches and, using familiar examples such as git and blockchain, addresses some possible misunderstandings...

Daniel Roth from Microsoft discusses Blazor’s key features and benefits of using c# full stack for building web apps with host Priyanka Raghavan.

Sergey Gorbunov of Axelar discusses blockchain interoperability, a technology that enables decentralized applications to work across multiple blockchain ecosystems. Host Philip Winston spoke with Gorbunov about programmable blockchains, distributed vs. centralized changes, the Ethereum virtual machine, Axelar's Cross-Chain Gateway Protocol and Cross-Chain Transfer Protocol, security issues, delegated proof of stake...

Roberto Di Cosmo, Computer Science professor at University Paris Diderot and founder of the Software Heritage initiative, discusses how to protect against sudden loss from the collapse of a "free" source code repository provider, how to protect...

Casey Muratori caused some strong reactions with a blog post and an associated video in which he went through an example from the “Clean Code” book by Robert Martin to demonstrate the negative impact that clean code practices can have on performance. In this episode, he joins SE Radio’s Giovanni Asproni to talk about the potential trade-offs between performance and the qualities that make for maintainable code, these qualities being the main focus of Clean Code. Brought to you by IEEE Computer Society and IEEE Software magazine.

Maxim Fateev, the CEO of Temporal, speaks with SE Radio's Philip Winston about how Temporal implements durable execution. They explore concepts including workflows, activities, timers, event histories, signals, and queries. Maxim also compares deployment using self-hosted clusters or the Temporal Cloud.

Wouter Groeneveld, author of The Creative Programmer and PhD researcher at KU Leuven, discusses his research related to programming education with host Jeremy Jung. Topics include evaluating projects, constraints, social debt in teams, common fallacies in critical thinking, maintaining flow state, documenting and retaining knowledge, and creating environments that encourage creativity. Brought to you by IEEE Software and IEEE Computer Society.

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The Philips Performance Wireless TAPH805BK are wireless headphones with battery life that will knock your socks off, but the sound quality has a lot of room for improvement.... [PCSTATS]

Orico surprises with its GV100 1TB portable NVMe SSD. Join us as we take a look at this new drive and what it's all about."... [PCSTATS]

The HT10 True Wireless Bluetooth Earbuds by Lenovo are aimed towards consumers on a tight budget looking to get the best bang for the buck. ... [PCSTATS]

"It's not just Intel chips that are vulnerable to hard-to-fix security flaws. Researchers at the Graz University of Technology have detailed a pair of side channel attacks under the "Take A Way" name that can leak data from AMD processors dating back to 2011, whether it's an old Athlon 64 X2, a Ryzen 7 or a Threadripper. Both exploit the "way predi... [PCSTATS]

The ADATA SE800 is an NVMe based external SSD, which means it offers much better performance than earlier external storage. In our testing we saw speeds up to 1 GB/s, that, paired with 1 TB capacity on the SE800 make it an excellent choice if you want to move a lot of data around.... [PCSTATS]

External SSDs are the future when it comes to moving and storing large amounts of data. The Lexar SL100 Pro offers amazing speed and durability in sizes from 500GB up to 1TB.... [PCSTATS]

If you export your WordPress blog, it is delivered to you as an RSS feed that holds all of the blog's entries, pages and comments. WordPress makes use of five namespaces and calls the format WordPress eXtended RSS (WXR). I'm working on a Java application that converts a WXR file into a set of static HTML pages.