there are some semi Semiconductor call Thermoelectric Cooling, or Peltier Cooler, when you give it electric, it have hot side & cool side, the Semiconductor move the heat from heat side to cool side, it can make quite cold but need times. however, we don't need it to freeze point, we just want the coolant cooler, to make the intake air cooler.
Here is my design, could u give me some suggest?

p.s. to make the pic clean, I draw the coolant pie quiet long. in the real case, the Peltier Cooler can put together with the intercooler