Air Cooling Machine - Type DV420
Air Cooling Machine - Type DV420
APPLICATION
These machines are specially designed for applications in tunnelling and mining.
All machines manufactured by us are submitted to a test run on our test stand. The pressure vessels are subject to acceptance tested in our factory by the TÜV (Technical Inspection Association).
COMPONENTS
1. Machine Unit
The machine unit is manufactured from a continuous machine and engine frame with solid square tube, the bottom is as a collector sump of 8 mm sheet steel so shaped that the machine can be pulled on the floor. The steel parts are coated with zinc dust and resin color in green RAL6000.
2. Water-cooled condenser for condensing the refrigerant
The cooling water connections are designed as DIN flanges, the refrigerant circuit is hermetically sealed and with the required refrigerant fittings such as liquid stop valve with fill port, sight glass with moisture indicator, filter drier with interchangeable block inserts, expansion valve equipped.
The unit is completely piped and wired and is equipped with a sufficient number of heavy ring eyelets.
Main components:
- Compressor-motor unit
- Water-cooled condenser
- Control cabinet, control and automatic system
3. Injection evaporator (direct evaporator)
- Components of the evaporator: round or oval housing from 8 mm strong steel sheet with an exhaust and air tube connection, drain for condensation- and sprinkling water (2” sleeve socket),
eight cleaning openings, coated with zinc dust and resin color RAL 6000 - Hand operated sprinkling system for cleaning of the cooling package
- Water separator for catching and deriving the sprinkling and the condensation water from the airflow
- Skids in longitudinal direction for setting up and moving the evaporator on a stage or on the tunnel bottom
- The connection between the machine unit and the evaporator is carried out with two hoses from high-grade steel.
CONDITION
The air cooling machine is generally overhauled.
TECHNICAL DATA (design data)
Intended refrigerant | 407 C |
Cooling capacity of the air cooling machine (net) | 420 kW |
Cooling capacity of the air cooling machine (gross) | 450 kW |
Airflow rate | >13 m³/s |
Fan power | 37 kW |
Air inlet temperature in front of the fan | 30 °C |
Air outlet temperature | 17.9 °C/ 92 % Humidity |
Pressure consumption | 1200 Pa |
Condenser |
|
Condensing temperature> | 42 °C |
Cooling water temperature | 25 °C |
Cooling water outlet | 38 °C |
Cooling water quantity | 26.5 |
Water-side operating pressure of the condenser> | up to 40 bar |
Effective drive power | 119 kW |
Selected motor design | 132 kW |
Machine dimensions |
|
Length | 3350 mm |
Width | approx. 950 mm |
Height | 1100 mm |
Weight | 3,000 kg |
Filling weight refrigerant | approx. 100 kg |
Evaporator dimensions |
|
Length | 3200 mm |
Width | 950 mm |
Height | 1325 mm |
Weight | approx. 2,000 kg |