Co2 Evaporator System

Transcritical or subcritical cascade or single stage.

Co2 evaporator system.

The evaporation system consists of one ambient air heated evaporator double circuit and a pressure reducing station. Evaporators for co2 refrigeration. A hermetic co2 system figure 4 shows a simple co2 transcritical system block diagram. Haffmans co2 evaporation heat recovery system.

R 744 co 2 phase diagram the critical point is the condition at which the liquid and. System condensing temperatures for part or all of the year depending on the climate. One is found on the low side co2 portion of the system and a second on the high side which controls the compressors for the secondary refrigerant. Using co2 on the low side of a cascade system is safer for people and eliminates the risk of damage to products in the event of a leak.

Find a local sales office select category refrigeration evaporators dry coolers condensers heating cooling coils heat pipes for heat recovery. One is the gas cooler that takes the place of the condenser and the other is the expansion device. The haffmans co 2 evaporation heat recovery system liquivap is a heat exchanger designed to automatically evaporate liquid co 2 running from the co 2 storage tank s. The tubing and pipe used in the evaporator is the main determinant of its pressure bearing capability.

Above the critical point the refrigerant is a supercritical fluid. The blowers force the ambient air to the surface of finned tubes vaporizing and heating the co2. There is no phase change figure 3. How tpi system works.

To efficiently operate a system such as this key elements of consideration were use of electronic expansion valves for each evaporator required in a co2 system distributed controls allowing plant operators visual indication of system operation features refrigeration defrost alarm cleaning etc and distributed smart controls which. Co 2 systems that are designed to operate at pressures above the critical pressure of 1055 psig. Evaporators can be designed for pumped dx or brine operation to be compatible with all system types. Using co2 on the low side of a.

The required evaporation heat is provided by available hot cooling medium which during the evaporation process is cooled down. Co2 r 744 systems operate at higher pressures than other refrigerant systems. Nh3 co2 cascade systems are safer for workers in refrigerated facilities. There are two differences from the traditional system.