Its better if you can intake from inside your home. If not, you have two problems. The cold air is really cold, and the temps are extremely variable so it would need to be thermostatically controlled. Second problem the air is so dang cold that whatever the air touches is going to cool that object (wall, ceiling, duct, whatever is near). Its going to be below the dew point..........so get ready for massive condensation.
- Jiji