About the best you can do is make it into a chiller for a hydro rez or like radiant floor cooling. A coil of pipe in the fridge and a pump to circulate the water. A rez cooler. Or like run the pipe all around the floor to keep it cool.

I would sell it and get a portable A/C. They cost but you have a good temp swing that will cause you problems that are hard to nail down. A good piece of equipment that does the job with out worry is worth the money any day.

Took me along time to get that. Now I have to save a long time sometimes but it's worth it in the long run. There's nothing like a good plan coming together.