The most usual materials are copper tube and aluminum fins, but other combinations are possible (and may be necessary if the environment is corrosive.) Evaporators come in a wide range of sizes, so it is impossible to know how much material unless the required heat-exchange capacity is given.
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In vino veritas; in cervisia carmen; in aqua E. coli.
Air cooling coils are not easy to design "from scratch." There are many variables and assumptions. From a factory standpoint, it makes more sense to manufacture some samples, test their actual performance, build a data base, and then make ratings from that. Such information tends to be proprietary.
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In vino veritas; in cervisia carmen; in aqua E. coli.