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.
In this case, the Parliament wants a direct limit of 300 mg/Nm3 for 300 MWth plants or bigger.
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.