Co2 Evaporator System

Carbon dioxide is non toxic and is highly efficient at low temperatures which is the part of the refrigeration system that is closest to products and people.

Co2 evaporator system.

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. Find a local sales office select category refrigeration evaporators dry coolers condensers heating cooling coils heat pipes for heat recovery. A hermetic co2 system figure 4 shows a simple co2 transcritical system block diagram. There is no phase change figure 3.

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. Above the critical point the refrigerant is a supercritical fluid. Co2 r 744 systems operate at higher pressures than other refrigerant systems. Using co2 on the low side of a.

The tubing and pipe used in the evaporator is the main determinant of its pressure bearing capability. System condensing temperatures for part or all of the year depending on the climate. Co 2 systems that are designed to operate at pressures above the critical pressure of 1055 psig. The required evaporation heat is provided by available hot cooling medium which during the evaporation process is cooled down.

Nh3 co2 cascade systems are safer for workers in refrigerated facilities. Evaporators can be designed for pumped dx or brine operation to be compatible with all system types. Transcritical or subcritical cascade or single stage. R 744 co 2 phase diagram the critical point is the condition at which the liquid and.

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. There are two differences from the traditional system. 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. In applications of the subcritical design where direct expansion of the co2 occurs in the evaporator coils the installation will typically consist of two rack systems each with a rack controller.

A refrigeration system which includes a compressor condenser evaporator coil and some variety of expansion device. Evaporators for co2 refrigeration. Haffmans co2 evaporation heat recovery system. The blowers force the ambient air to the surface of finned tubes vaporizing and heating the co2.