direct system

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direct system

A heating, air-conditioning, or refrigeration system in which heat is exchanged directly with a surrounding material or space.
References in periodicals archive ?
The Tote is deterred from cutting other take-outs because the high commission rates needed to persuade bookmakers to join Tote Direct limit the scope for reductions.
Among specific topics are the role of weak convergence in probability theory, ideals in parabolic sub-algebras of simple Lie algebras, the conjugacy of maximal toral sub-algebras of direct limits of loop algebras, quotients in supergeometry, and symmetry and superstring phenomenology.
8) in left-right symmetric and exotic fermion models the EDMs of the neutron and of mercury set upper limits about two orders of magnitude below the present direct limits.