GE ISOVOLT Titan E 产品宣传册

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GE Inspection Technologies
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Description
Function
The cooling aggregate is designed for re-
cooling of water. The air-cooled aggregate 
is suitable for tropical climate and can be 
operated at an ambient temperature of 
up to 40° C. A circulation pump for the 
cooling water, a reservoir (approximately 
7 l) and safety devices for maximum 
water temperature  are completely wired, 
installed in the aggregate and connected. 
The aggregate is mounted in a square 
tube frame and is mobile on 4 castors.
The hot cooling water returns via  the heat 
exchanger and, after cooling down, into 
the water reservoir. The water reservoir is 
vented to the atmospheric pressure. The 
circulation pump drains the water from 
the reservoir and feeds it to the water out-
let connector, via the thermometer probe.
Cooling circuit
The cooling circuit consists of: 
•  Full-hermetic compressor
•  Air cooled condenser
•  Cooling agent dryer
•  Cooling agent viewing glass with 
hygroscope
•  Expansion valve
•  Evaporator/heat exchanger
•  High and low pressure regulator
•  Corresponding quick-lock connectors
All mobile components of the compressor, 
including the drive motor, are hermetically 
sealed in a housing.
The surface of the air-cooled condenser 
has generous dimensions to ensure reli-
able operation even at high evaporation 
and ambient temperatures. The ambient 
air is taken in through the condenser by 
means of the ventilator and is expelled 
via the compressor through the protec-
tive grill. Inverse rotation of the ventilator 
would reduce the air flow rate drastically, 
thus reducing the cooling capacity of the 
aggregate.
The cooling agent liquefied in the con-
denser gets to the expansion valve after 
passing through the oil reservoir, the 
dryer and the viewing glass. Here the 
pressure is released from the condenser 
to the evaporator pressure. In the heat 
exchanger the heat required for this ex-
pansion is taken from the hot cooling oil. 
The expansion valve controls the flow of 
cooling agent required to cool to a certain 
temperature sensed at the heat exchang-
er’s output side.
Electrical control
The standard version of the cooling ag-
gregate is sized for connection to a 230 V, 
50 Hz power supply and is connected to 
the power via a 3-wire power cable. 
Safety circuit
A thermostat switch opens the circuit in 
case the cooling water temperature ex-
ceeds the set temperature. In case of fail-
ure the signal is available on a potential-
free safety circuit.  The maximum pump 
pressure is limited via a bypass valve.
Note: Thermostat and bypass valve are 
set  according to specification.
Air supply
The heat absorbed by the heat exchanger 
and also the dissipation heat from the 
drive of the compressor has to be dis-
charged by the air cooled condenser. If 
the unit is operated in a small, self-con-
tained room the room temperature will 
built up rapidly. As shown in the overleaf 
diagram the cooling capacity decreases 
with increasing ambient temperature. It 
is therefore important that sufficient air 
circulation is provided for the WLK 10.
Maintenance
All components of the cooling aggregate 
are selected to be maintenance-free. 
However, it is crucial that the  condenser 
be kept clean. Also, the cooling oil level in 
the oil reservoir should be observed and 
topped up if required.
Fig. 1     Flow diagram
Evaporator
Expansion valve
Solenoid valve Y2
Viewing glass
Dryer
Compressor
Condenser
Collector
Pressostat
Check valve
Filter
Pump
Bypass valve
Cooling water 
reservoir
Temp. control
Solenoid valve Y1
liquid separator
Temperature max.