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cooling system with very high ambient temperatures


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To cut a long story short i am currently designing a robot that has to survive in high ambient temperatures (about 200 degC). I need to keep a section cool (around 30degC). I thought about using a peltier cooling system but i dont think i'll be able to dissipate the heat from the hot side due to the high ambient temperatures. Are these corcerns silly? Ig not anyone got any other suggestions? 

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There are several options. What is practical depends on the application. Is this robot supposed to enter a burning building or a failed nuclear system or a wood drying kiln or what? I have had various electronic devices fail in conditions I had to put up with, like 50°C and 100% relative humidity atop a cooling tower. Have you ever been inside a coal plant or gas turbine combined cycle plant when it was running? I have been countless times. I once stepped out of a plant in Muskogee Oklahoma into 36°C bright sunlight and shivered at the temperature drop. My coworkers have had to endure 63°C ambient in Saudi and UAE.

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Then no one should mind if you spray a little water around to keep the electronics cool. Evaporative cooling is probably the simplest, cheapest, most reliable, lightest, least complicated method to use. Compressors, refrigerants, thermo-electric, semi-conductor, and other high-tech options sound good but are usually a nightmare to implement and keep working.

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