Dealer Design Awards winners in the Testing and Monitoring category include Extech Instruments, a FLIR Co., which received gold for its BR250 video borescope-wireless inspection camera and bronze for the 42509 dual-laser infrared thermometer. The 233 Remote Display Multimeter from Fluke Corp. won silver.
Less flash gas equals a higher net refrigerating effect and a more efficient system. Many designers reduce the amount of flash gas by additionally subcooling the liquid refrigerant entering the metering device. This lowers the refrigerant temperature; meaning less refrigerant will flash off to cool itself down to the evaporating temperature.
Systematic troubleshooting using a system check sheet is still the best method for the conscientious service technician to pinpoint hard-to-find system problems. Here we will explore how evaporators can become oil logged, and include symptoms with explanations for a system with an oil-logged evaporator.
As the HVACR industry looks at possible refrigerants beyond HFCs, attention is being paid to HFOs. In recent years, DuPont and Honeywell have been jointly doing research on HFO-1234yf for use in auto air conditioning in Europe where HFCs are being phased out in that application. HFOs are also being looked at for stationary equipment.
When servicing ice machines, a number of considerations can help prevent problems and costly repairs or downtime. Factors such as the quality and quantity of the ice machine’s water supply, and the location of the equipment, can greatly impact performance and determine maintenance decisions.
As of the first of the year, tighter efficiency standards were issued for Energy Star recognition. And at both the National Restaurant Association (NRA) show and Food Marketing Institute (FMI) expo, exhibitors were promoting refrigeration products that either have already been certified to those standards, or were in line to win approval.
The water filter cartridge is a topic in itself when it comes to ice machines. The manufacturer Everpure has provided a Q&A on the topic in its publication, “It’s Time To Change Your Water Filter.” Here from that publication and based on Everpure products are some of the commonly asked questions and the answers.
The National Student Energy Survey found that most of the 4,611 participating middle and high school students indicated strong support for renewable energy. But while the survey shows that many students are optimistic about America’s energy future, some of that optimism comes from a lack of awareness of the true facts, according to the survey’s organizer.
On June 3, the Department of Energy (DOE) issued a notice of noncompliance for three manufacturers of evaporative coils. In response, all three companies stated that there were errors in the data used to evaluate their compliance with federal energy conservation standards, and that they did not distribute any noncompliant models.
The de-valuing of the word green by attaching it to everything from furniture polish to soldering flux has gotten completely out of control. I am starting a movement to return green to its former glory by offering some alternatives to the now over-exposed and cliché use of the word.
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