[tocomment]

How about dividing the heat exchanger into two sections? One section cools the air while the other section defrosts, and then alternate.

[marshray]

That was my first guess too. With that many pipes, they could have many sections which migrate the frosty sections down into the engine in waves.

[Create]

playing with pressure differences, thermodynamics, sections and annealing, you could think about freeze-drying while drinking your lyo coffee.