  We theoretically propose a simple setup based on a three terminal triple
quantum dot in the Coulomb blockade regime as a heat flow allocator to
spatially separate heat flows along two different channels at arbitrary
proportion. We show that a constant output heat flow ratio can be obtained in a
wide range of system parameters and any ratio of the output heat flow, whether
it is an integer ratio or a fractional ratio, can be obtained by directly
adjusting the ratio of the energy-dependent tunneling rate.
