To have an effective smoothing at <1Hz you would an irrealistic LC filter at 0.1Hz or so. With a 1 Farad capacitor and a 1 Henry inductor, assuming a 24 Ohm load (1A at 24V) you would get roughly 0.16Hz cutoff frequency, and it still still wouldn't completely smooth out the current draw (and both values of the filtering elements are absolutely huge and unrealistic, not to mention incredibly expensive if you could even find them).