New directions in transport refrigeration involve cryogenics and carbon dioxide (CO2). Thermo King, in Minneapolis, MN, is using cryogenics technology to create what the company said is cleaner, quieter, and more efficient temperature control. The cryogenics transport refrigeration systems use liquid CO2, eliminating the need for ozone-depleting commercial refrigerants.
Troubleshooting single-phase refrigeration compressors requires a technician to have a proficient understanding of capacitors. The start capacitor is one of two types of capacitors that can be found on single-phase compressors. Understanding how to troubleshoot and replace a defective starting capacitor is essential when working with these compressors.
People leaving the military want to find quality jobs. The construction industry, including those in the HVACR field, has long been seeking more quality workers. The new “Helmets to Hardhats” program intends to bring them together for the benefit of all.
The U.S. House of Representatives has begun its proceedings to address the mold issue, holding its first hearing to inform members of Congress on July 18, 2002. The joint hearing of the Housing and Community Opportunity Subcommittee and the Oversight and Investigations Subcommittee of the House Financial Services Committee was aptly titled “Mold: A Growing Problem.”
Earning Partnership for Air-Conditioning, Heating, Refrigeration Accreditation (PAHRA) is not an easy task. The process takes a great deal of time and collaboration between instructors and school administrators. It took Delaware Technical and Community College about one year to complete the PAHRA process. Last year, the college was honored with the accreditation.
On July 17, 1902, Dr. Willis H. Carrier designed the first air conditioning system that provided temperature, humidity, ventilation, and air quality control for a Brooklyn printing plant. Now, 100 years later to the day, Carrier Corp. returned to dedicate the Willis H. Carrier Academy at Grady Technical High School.
Coordinators of the PGA Tour annually include the FedEx/St. Jude Classic as a key stop on the tour. The fact that the stop is usually scheduled in late June means golfers and spectators alike get to experience Memphis at the height of its heat and humidity. During the most recent event, one of the popular locations was the Coleman Heating & Air Conditioning mobile display trailer. The air conditioned trailer, which showcased the company’s cooling and heating equipment, was a busy site.
For over 70 years, Lau Industries has been a national component supplier offering propeller fans, blower wheels, and blowers for its OEM customer base. Now the company has expanded its product offerings in order to respond to market demands. According to Doug Muller, sales manager for Lau Industries, the company recently introduced a new approach, creating a one-stop shopping option for its customers.
It might seem that things are in better shape with a new duct system than with an existing one. However, even in new buildings contractors face a major problem: they don’t make all the decisions. Lacking the incentives and the resources to install an excellent duct system, a contractor faces a number of challenges. But there are actions a contractor can take to change the situation.
The technology known as underfloor air distribution (UFAD) is not altogether new. Contractors have been using it for some time to supply cooling in out-of-the-norm situations, such as computer rooms and laboratories. But today, this once niche technology is slowly moving over into more mainstream commercial applications.