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Fig. 3.13. Camera temperature as a function of ambient temperature (radiator solution).
3.6.3 Recirculating chiller
Recirculating chiller maintains the cooling liquid at the set temperature and is the most precise means of
liquid cooling (provided that the chiller is sufficiently powerful). The cost of the chiller is typically higher
than the cost of the radiator solution. Another important aspect with the chiller is to ensure that the
chiller can be used together with the welding camera since the cooling channels inside the camera are
made of aluminium (corrosion must be prevented). The results from the tests with recirculating chiller
were presented in Table 3.1 (reproduced below).
Table 3.1. Results with recirculating chiller (without/with camera insulation).
Temperature
Only cables insulated
Cables and camera insulated
Ambient (
°C
)
290
290
Camera body top side (
°C
)
80
52
Camera body bottom side (
°C
)
64
43
Cables (
°C
)
76
67
Camera (
°C
)
47
39
Cooling liquid (
°C
)
25
25