I've an RPI3B+ mounted in an IP65 box and placed inside a greenhouse. Obviously the CPU becames really hot during the day and it reaches 80°C (even after the installation of the small heatsinks). I was thinking to use a Peltier cell to cool it down so that I've not to drill holes on the box and moreover, in this way, I can preserve the IP65 being of the enclosure. Do you think it is a good idea? Does anyone have experience in this scenario?