An article in the Aug. 2 issue of The News reviewed conventional thermostatic expansion valves (TEVs or TXVs) and covered the basic operation of electronic expansion valves (EEVs). This article focuses on control schemes of EEVs.
This is another installment concerning HVACR-related developments in China, a country that is expected to be one of the largest users - if not the largest user - of such technology within the next few years.
The message from the most recent Food Marketing Institute (FMI) Expo was that manufacturers are working together to develop the most efficient and cost-effective refrigeration systems for specific applications.
Electronic controls for reach-in refrigerators and freezers are gaining in popularity as operators see the benefits of better control and additional features come along. This article examines common controls of the past, the latest features, and what the future looks like.
Excellent filtration has always been a necessity in refrigeration. However, the proliferation of POE lubricants has made filtration increasingly important in HFC refrigerant systems due to the properties of POE.
Now that new efficiency standards for air conditioning are in place, the Department of Energy (DOE) is zeroing in on the heating side of the HVACR industry. The DOE recently issued its first official document in the current round of review of its energy-efficiency regulations for residential furnaces and boilers.
Honeywell has announced plans to build a refrigerant manufacturing plant in Qingpu, near Shanghai, China. The facility is expected to be operational in November 2004.
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