Save Energy, Think Environment, And vice versa. Any company that is energy conscious is also environmentally conscious. Less energy consumed means less waste, fewer emissions and a healthier environment. In short, bringing energy and environment together lowers the cost industry must pay for both.
MANIKS development in Fully automatic Gas Purger has led to countless saving in energy, time and money.
What are "Non Condensible Gases" in a Refrigeration system?
Refrigeration systems accumulate "foul substances". The foul substance gaseous in nature, are commonly referred to as non - condensible gases . Non - condensible gas constituents commonly include air, nitrogen, hydrogen, and hydrocarbons . The term non - condensible" means that, these gases will not liquefy at the temperatures and pressures present in condensers consistent with industrial refrigeration systems. For example, ammonia will change phase from gas to liquid if heat is removed while at a temperature of 35°C and a pressure of 12.5 Kg/cm2.
At the same pressure, any nitrogen present would have to be cooled to -264°F (-164°C) in order to liquefy. As a result, any nitrogen that may accumulate in a refrigeration system always will remain in a gaseous state.
Non - condensable gases cause considerable loss of efficiency. Air or other non-condensable gases can dissolve in the refrigerant and come into circulation in the refrigeration system, causing even in small concentrations a significant increase in condensing pressure, resulting in a considerable loss of efficiency.
The Non-condensable gases such as Air in the condenser will raise head pressure, mainly due to its insulating properties. The air molecules in the gas from the compressor will be blown to the quiet end of the condenser. When condenser surfaces are insulated with air, the effective condenser size is reduced.
Increased pressure leads to increased temperature, which shortens the life of compressor valves and promotes the breakdown of lubricating oil.
Increases condenser scaling Water content in the Air lead to corrosion inside the refrigeration plant and to problems with automatic controls.
"Ammonia explosions" due to accumulation of non-condensable hydrogen. Refrigeration systems must therefore be kept as free as possible from non-condensables. The most effective way of doing this is by automatic purging, as this responds immediately to any entering of non-condensables in the system.
The MANIKS make fully automatic gas purger for refrigeration plants Type SGP-2E efficiently and automatically helps maintaining condensing temperature at nearly optimum operating conditions and reduces the concentration of non-condensable gases to a negligible percentage.
It is impossible to calculate the amount of non-condensable gases, which has to be removed from a specific refrigeration plant.
Usually plants operating with a suction pressure above the atmospheric pressure are less inclined to collect non-condensable gases than plants operating with a absolute pressure below 1 bar. However, great quantities of non-condensable gases are often found in both categories of plants. For ammonia plants with a suction temperature below -35°C, one gas purger is recommended at capacities below 500 kW. For plants with a suction temperature above -35°C, one gas purger per 1000 kW is recommended as a minimum.
The capacity of the gas purger will be reduced at high ambient temperatures so it is recommended to insulate the vessel.
Please specify refrigerant such as Ammonia(R717), fluorinated refrigeration (R22, R404a) etc.