Advantages: simple materials, available general metal materials, easy processing, low cost, simple system devices, easy lubrication, no need for exhaust devices, the use of multiple heads, high-speed multi-cylinder, performance can be improved.
Disadvantages: more parts, more wearing parts, maintenance is complex, frequent, high maintenance costs, low compression ratio, small refrigeration capacity of a single machine, a single head of part of the load under the poor regulation, unloading cylinder adjustment, can not be adjusted steplessly, is the up and down reciprocating motion, vibration, unit refrigeration weight indicator is larger.
Pay attention to the air-cooled chiller in front of the cooling fan can not have a high wall, or stacked objects blocking the exhaust channel and affect the cooling effect.
Expanded Information:
. p>Precautions:
1, the chiller will not be required to run the unit condenser water inlet valve closed before the start, to prevent water run-off.
2, open the condenser to run the unit condenser in and out of the water valve (usually the water valve is always open, inlet valve according to the need to open and close the condenser, the evaporator are the same) open the corresponding cooling water pump, adjust the condenser inlet and outlet water pressure to 68.6kPa (0.7 kg/cm:) or so (the pressure drop in order to be able to overcome the principle of piping resistance to lower some of the power-saving effect is better).
3, if the condenser in and out of the water pressure gauge pointer swing is too large, indicating that the cooling water system has air, the need to drain the air to be normal pressure gauge instructions to continue the next operation. And in the operation, no matter how many units, are a cooling water pump to a host.
Baidu Encyclopedia - air-cooled chiller