Ammonia refrigerators from PRIMEHOLOD

We produce refrigeration units and import our series of ammonia compressors specially developed for the industrial refrigeration equipment. They are used in:

-low-temperature warehouses

-refrigeration warehouses

-fishing

-ice-cream production

-milk plants

-chemical plants

-pharmaceutical factories

-meat-processing plants.

High energetic characteristics of ammonia refrigerators provide competitive engineering and commercial indicators, even taking into account the additional expenses for secure operation. Herewith a complex approach to reconstruction is reasonable for such equipment, especially approach of implementing required security level and lowering energetic operational expenses in cold generation.

The major directions for ammonia refrigerators upgrading include:

1) creation and application of new aggregates with low content of ammonia;

2) lowering the amount of ammonia in current aggregates by partial reconstruction (moving to new schemes, equipment replacement);
3) lowering the average annual driving pressure (the pressure of coolant condensation) due to maximal use of natural cold;

4) providing the required control of parameters, automatic protection and control;

5) the development of subsystems providing lower ammonia emission in refrigerator containment failure;

6) creating a unitized refrigerator heat-exchange and capacitive hardware, fully equipped by modern control and protective automatics means.

There is a special class of refrigerating machines that work without mechanical energy expense, but require thermal emission for operation. These refrigerators are called absorptionplants.

Solutions made of two components (binary solutions) are used as a working medium in absorption refrigerating machines. The solution components are a coolant and absorbent.

Ammonia-water absorption refrigerating units

Ammonia (NH3) is used as a coolant in such machines, and water is used as an absorbent. The current refrigerators provide high refrigeration capacity (up to 35...10000 kW). They are used on big meat-processing plants, in chemical industry and other factories with big cold supply.

COMPARISON OF ABSORPTION AMMONIA AND COMPRESSOR REFRIGERATING UNITS

AMMONIA ABSORPTION REFRIGERATION UNIT	COMPRESSOR REFRIGERATOR
Low operating costs due to cheaper fuel, such as: agrofuels the burning of oil waste of heat	High operating costs due to the use of electricity.
Very low maintenance costs, due to the absence of rubbing parts with high wear.	High maintenance costs
High reliability of the equipment due to the lack of friction parts (only one centrifugal pump, the movable part of which has a large margin of safety)	Due to frequent breakdowns, installation requires backup compressor
No loss of efficiency at partial load. Efficiency is improved by partial load	Loss of efficiency at partial load, due to mechanical wear and tear of the electric motor
No contamination of the inner surface of the evaporator due to oil	The possibility of contamination because of the lubricating oil of inner surface of evaporator
Power air cooler with time does not change. It does not require power supply. Installed capacity is sufficient.	Due to the contamination of an inner surface with the oil, the air cooler is installed with the necessary reserve
Installation is located in the street that leads to lower construction costs and civilians.	Because of the electrical system the equipment is installed indoors
Low costs for spare parts as the result of the rubbing parts absence	The high costs of parts for piston compressors
Long term plant operation, at least 25 years	Short term of the compressors operation
No loss of efficiency during the long-term operation	The loss of efficiency due to the wear of compressor parts

We offer

Chillers
Liquid refrigerating units. They are used in centralized conditioning systems.

We offer

Absorption chillers
These liquid chilling plants are used for transferring water or another coolant into the operating equipment that requires refrigeration.

We offer

Ammonia refrigeration units
Ammonia refrigeration units based on “Grasso” compressors (Germany) for industrial refrigerating systems.