In a parallel flow evaporator, the inlet manifold construction consists of alternating expansion and contraction chambers to promote homogeneous conditions of the refrigerant, as it flows longitudinally through the inlet manifold, as a result of partial evaporation and mixing and jetting effects. Respective one of the pair of terminals has respective one of discharge parts formed integrally thereto. The spinal fusion implant of the present invention may be used to provide temporary or permanent fixation within an orthopedic target site. A fourth transistor is coupled between the second electrode and the first power source, and a fifth transistor is coupled to the second electrode. The plurality of mounting steps is formed by at least removing a preselected amount of housing material at predetermined locations on the interior surface.