Automatic gas purgers [type sgp-2e] are offered by manik engineers for refrigeration plants. These gas purgers have some technical features which include: a built-in heat exchanger connected to the liquid line from the receiver or the pump discharge line on the low pressure side of the refrigeration plant; less energy consumed means less waste fewer emissions and a healthier environment; automatic gas purgers efficiently and automatically help maintaining condensing temperature at nearly optimum operating conditions and reduce the concentration of non-condensable gases to a negligible percentage. Usually plants operating with a suction pressure above the atmospheric pressure are less inclined to collect non-condensable gases than plants operating with an absolute pressure below 1 bar. However, in both categories of plants great quantites of non-condensable gases are often found. One gas purger is recommended at capacities below 500 kw, for ammonia plants with a suction temperature of below -35ºc, . For plants with a suction temperature above -35ºc one gas purger per 1000 kw is recommended as a minimum. The capacity of the gas purgers will be reduced at high ambient temperatures, so it is recommended to insulate the vessel.
