Issue link: https://www.e-digitaleditions.com/i/447632
January/February 2015 33 DISPOSERS Salvajor Assembly packages are available for sink and cone bowl installations with water- tight energy and water-saving controls. 3 /4 HP thru 7- 1 /2 HP. More Disposer Solutions SCRAPMASTER® TROUGHVEYOR® A single operator scrapping, pre-rinsing and food waste disposing system designed for schools, hospitals, nursing homes and cafeterias. Avail- able with 3, 5 or 7- 1 /2 HP. A multiple operator scrapping, pre-flushing and food waste disposing system designed for volume users like university cafeterias, schools, casinos, convention centers and correctional facilities. Available with 3, 5 or 7- 1 /2 HP. m.salvajor.com for Product Video Specifications Full Product Line DISPOSERS • FOOD WASTE SCRAPPING SYSTEMS • FOOD WASTE COLLECTING SYSTEMS Contact Salvajor today to learn more. salvajor.com • (800) SALVAJOR Visit Booth #3228 continued on page 37 Alternate Refrigerant Choices The following is an overview (with associated pros and cons) of the major refrigeration choices that are currently vying for use in the next generation of complaint products for introduction prior to January 2017: Hydrocarbon Based CO2 (carbon dioxide or R744): one of the oldest original refrigerants Pros ➤ Not patented or proprietary ➤ Non-flammable and non-toxic (in ventilated spaces) ➤ No limits on system size based on system charge ➤ Smaller compressors and piping than alternative refrigerants ➤ Works on low-temp systems like blast chillers and freezers ➤ Easily adapted to heat recovery sys- tems Cons ➤ Coils for low-temperature applica- tions are limited ➤ Performance diminishes at above 87°F ambient conditions ➤ High-pressure system ➤ CO2 leaks in confined areas can be fatal—without warning, odorless C02 quickly replaces oxygen and can lead to affixation Propane (R290 - special blend: not a cooking fuel) Pros ➤ Ambient temperature has a low impact on performance ➤ Improved energy-efficiency per- formance versus refrigerants like R-404A and R-134a Cons ➤ Significant limits on size of charge, reducing the number of doors and the capacity of walk-in coolers ➤ Perception of flammability ➤ Requires retraining of service per- sonal ➤ Limited performance with freezers and blast chillers Low GWP HFC (Hydroflorocarbons HFO and A2HFC Based) New synthetic refrigeration options from traditional chemical manufacturers Pros ➤ Easy to adapt to the last generation of HFC-based refrigeration hardware ➤ Least impact on service personally or standard service parts Cons ➤ Patented and proprietary products, consequently more expensive