The conversation on ways to make ammonia work in a wider range of refrigeration applications is drawing increasing attention these days. At the most recent International Institute of Ammonia Refrigeration (IIAR) conference in Milwaukee, technical presentations covered its uses in supermarkets, with heat pumps, in absorption refrigeration, and in conjunction with CO2.
The three functions of the condenser are desuperheating, condensation, and subcooling. Read to find out more about what the Professor has to say about these three topics.
Manufacturers are increasingly designing their systems with unique controls and features that may apply only to their systems. Servicing, installing, and maintaining these new systems can be challenging. Sometimes they require us to reference material provided by the system or component manufacturer. Without this reference material, servicing, installing, or maintaining many of these new systems may be quite difficult or at times even impossible. What is a contractor to do?
Whether we like it or not, R-22 is going away, and technicians need to look at their best options and solutions to work with the phaseout. One option available to all competent service technicians is to recover and recycle refrigerant.
Noncondensable gases (NCGs), as the name implies, are not able to condense inside a condenser, unlike refrigerant gases. This can have a serious impact on system operating conditions, energy efficiency, and the lifetime of a system.
The upcoming games of the XXX Olympiad in London are featuring some of the latest state-of-the-art refrigeration and air conditioning equipment as well as the use of one of the oldest refrigerants, namely ammonia, as well as other natural refrigerants such as CO2 and HCs.
Mueller Streamline Co. has been working with Underwriters Laboratories (UL) to conduct a series of performance tests regarding its copper tube and fittings and some of the newer higher pressure refrigerants. As a result, the company’s Streamline® copper tube and fittings are UL recognized to 700-psi operating pressures.
I just returned from my biannual visit to the Food Marketing Institute Food Retail Show, called FMI 2012. This is for all things in supermarkets and convenience stores. For me it means the latest in refrigeration equipment and — more and more these days — the refrigerants used in that equipment.
Interest in so-called natural refrigerants continues to grow, especially when it comes to the refrigeration of food. Here are some examples that illustrate how companies are using natural refrigerants to keep food cold and fresh.
RSS
