Electric defrosting is used in residential and small commercial applications where die Cabinet temperature is maintained below the 34F (2.8C) and frost accumulation on the surface of the heat exchanger with moderate to severe. Compressor and evaporator fans cycled off and the heating element voltage. As the air surrounding the surface of the coil is heated, frost and ice, and the condensate is collected in a heated frying pan. He was taken outside of the classroom using the heated pipes to prevent condensate from freezing and block the tube.
Hot Gas Defrosting
Hot gas defrosting is used in large commercial and industrial applications where the Cabinet temperature is maintained below 10 F (12.2C) and frost or ice die accumulates on the surface of the coil. This method is the fastest, simplest and most effective of all the thawing of the strategy. During the defrost cycle, the evaporator fans involved and compressor off remains operation. Hot gas solenoid valve opens, allowing the discharge of hot gases flow in the evaporator.
Coil warm, melting the ice and frost from its surface. The condensate is collected and removed from the Cabinet.
Heated Air Defrosting
The hot air and electric defrosting very similar in its activities. Hot air is used in commercial applications, where the Cabinet temperature is maintained below 10 F (12.2C) and in ambient air vaporizer can be isolated from the air into the Cabinet. This function is carried out with the blinds or shock absorbers are mounted on the evaporator of the Cabinet (Annex). During the defrost cycle, the compressor is cycled off, shock absorbers are commanded closed and evaporator fans are working. Heating element or hot gas solenoid valve is energized, warming the air surrounding the surface of the heat exchanger. Fans circulates warm air through a closed housing evaporator, melting the ice and frost. The condensate is collected in a hot frying pan and tap die outside of the classroom using the heated pipes to prevent freezing.
Water Thawing
Water thawing fast way to remove frost from the surface of the evaporator in the large industrial applications. In the beginning of the cycle defrost, compressor and evaporator fans cycled off and water solenoid valve is open. Water splashes on the coil, quickly clearing it from frost. This strategy becomes less viable option, as the Cabinet of the temperature falls below zero, because water can freeze on heat transfer surfaces under certain conditions.
Hot Brine Thawing
Brine thawing often used in industrial cooling brine applications. During die defrost cycle, in brine circuit evaporator heating. Warm brine inside the tube of ice accumulations from the surface of the heat exchanger...
Industrial