Variable orifice valve (VOV(TM)) is located in the liquid refrigerant line between the condenser and the evaporator in an automobile's A/C loop and uses thermostatic bi-metal technology to react to condenser discharge temperatures. This controls variable restriction levels to provide performance for air conditioning systems. The VOV also offers variable restriction levels, which results in performance under all driving conditions from highway to city driving to idling.
Texas Instruments, Materials and Controls Group, Attleboro, MA.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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