Cost Comparison of Ammonia-to-Fluorine Conversion in Cold Storage Renovation

2024-09-15

Leakage and explosion accidents of liquid ammonia in cold storages occur frequently and are not uncommon in major media. In addition to strengthening the daily safety management of cold storages and doing a good job in the maintenance of liquid ammonia cold storage equipment, if we want to fundamentally prevent the occurrence of safety accidents, it is more necessary to carry out the transformation of cold storages from ammonia to fluorine.

Cost Comparison of Ammonia-to-Fluorine Conversion in Cold Storage Renovation1726383194275

The following are the advantages of the fluorine system compared with the ammonia system:

Stable, reliable and long service life:
The refrigeration main unit adopts three semi-hermetic screw compressors and operates with an economizer. They are independent of each other and do not interfere with each other. During the initial cooling, three units work. Usually, the number of operating units is automatically adjusted according to the load demand, and a backup unit is provided to ensure the stable operation of the cold storage. The designed service life of the equipment is more than 15 years.
Simple and safe:
Fluorine refrigerants such as R22, R404A and R23 are used for refrigeration, and there is no explosion-proof problem. Indirect refrigeration is carried out through ethylene glycol coolant, and its pipeline is an ordinary waterway system, and the system is simple.
Low failure rate and low maintenance cost:
Indirect refrigeration with coolant does not have problems such as difficult oil return in direct evaporation systems, easy leakage of refrigerants, difficult detection of leakage points, and uneven liquid separation. Only regular maintenance of the refrigeration main unit is required, with low failure rate and low maintenance cost.
Energy-saving and high efficiency:
The equipment can realize energy adjustment from 10% to 100% according to the actual load of the cold storage. At the same time, liquid is supplied through a refrigeration pump, and there are no problems such as pressure loss, cooling capacity loss, and difficult control of parameters.
It has strong controllability. Therefore, the comprehensive energy efficiency ratio is high. The refrigeration main unit is automatically controlled by a computer program. Multiple programs can be set to realize the protection, data display and real-time monitoring of the refrigeration main unit.
The refrigeration main unit is shipped after being tested as a whole in the laboratory, and the overall system operates safely and reliably.