Some no frost devices do have internal fan build in, so if your fridge is no frost, this should be enough. It not, then it will require dome DIY, and I'm afraid you will need to do some serious modifications. Drilling/cutting inlet and outlet hole. Protecting it with kind of net to prevent insects. In one of them you can install computer cooling fan. Will this work, probably yes, you may also need some fan speed control. This however is just an idea not tested by me, so I can not guarantee.
This will help, but can be not enough, I'm not sure if any of the forum members are using this solution. Normally we use attic, garage or ground cellar. You just need to build cube frame with mosquito net outside, and the dryer is ready.
It really depends from the temperature and humidity, airflow. In my cellar it takes from 2 to 3 days to dry about 10%. You will have to monitor results daily.