Some individuals are natural born instructors. They have a knack for explaining difficult subjects in a way that makes sense and enlightens students. They also have a tremendous love for what they do. Jerry Parker can be added to that list of natural born instructors. In recognition of his talents, The News has chosen Parker as the HVACR Instructor of the Year.
ISH North America is hosting three days of seminars, exhibitions, and special events from Oct. 31 to Nov. 2, 2002 at Toronto's National Trade Centre. Sponsored by Messe Frankfurt and other sponsors and partners, the theme of the trade show is “Forging a New Era of Products, Productivity and Profits.”
Navigator Amyr Klink is using compressor technology from Embraco on his sailboat Paratii 2. One of the purposes of the variable-velocity compressor is to allow the reduction of approximately 50% in power consumption in relation to other products on the market already used by Klink.
Temperature is critical for chocolate flavor and appearance, according to Cadbury officials. Chocolate bars are tempered (gradually heated and cooled) similar to the process used in steel production. Because of the manual adjustments and icing problems on evaporator coils during changeover to a different chocolate, the company wanted to find a better way. Cadbury turned to CIMCO Refrigeration, which in turn met with officials of Hansen Technologies.
When replacing a thermostatic expansion valve (TEV), it is usually easiest to replace the valve with the same make and model. However, there may be times when the original make and model is not readily available, so a replacement needs to be chosen.
One area in which CO2 is getting an early wave of attention is mobile A/C and transport refrigeration. Researchers from the Thermodynamic Institute in Germany looked at compressors that might work in such applications.
At a joint session of Purdue University’s Compressor and Refrigeration Conference, a high-ranking official in the Department of Energy (DOE) called on HVAC engineers to continue to improve energy efficiencies, but also offered a slap on the wrist to “tradespeople who use bad practices in the field.”
A new generation of contractors and technicians may not know how the industry moved from CFCs to HFCs. To a great measure it was the result of government regulations, but officials merely called on our industry to come up with alternatives to CFCs. The industry responded. DuPont, for example, has taken part in the search for alternatives from the beginning, and the search for acceptable alternatives is not over, says the company.
Residents of Hawaii know that with high year-round humidity, the climate is very conducive to mold growth. However, when potentially dangerous mold closes all 453 guestrooms of a Hilton hotel building, sending guests elsewhere at the height of tourist season, that’s big news.
Careful consideration must be given to the refrigerant receiver in the design of new systems or when upgrading existing systems. Who hasn’t, at one time or another, experienced problems with this essential component? With its many connections, it is important to select the receiver that meets the system’s needs, as well as all applicable building codes.