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.
Perhaps it is time to think of HFCs as only being conditional “long-term replacement” refrigerants for the air conditioning and refrigeration (ACR) industry. At the recent Purdue University Compressor and Refrigeration Conference, a number of papers looked at alternatives to HFCs, with CO2 being the most talked about.
Jerry Elam left a full-time contracting business to bake cookies. But his experience from his former occupation has been helpful in his new one. His baked goods business has grown so big that refrigeration is vital. And his company’s refrigeration systems have benefited from his expertise and that of his refrigeration equipment suppliers.