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Updated: Jun 27, 2026

Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel
Published on: October 5, 2018
High-efficiency free-form condenser overcoming rotational symmetry limitations
Juan C Miñano1, Pablo Benítez, José Blen
1Universidad Politécnica de Madrid, Cedint, Campus Montegancedo, 28223 Madrid, Spain. jc.minano@upm.es
Abstract:
Conventional condensers using rotational symmetric devices perform far from their theoretical limits when transferring optical power from sources such as arc lamps or halogen bulbs to the rectangular entrance of homogenizing prisms (target). We present a free-form condenser design (calculated with the SMS method) that overcomes the limitations inherent to rotational devices and can send to the target 1.8 times the power sent by an equivalent elliptical condenser for a 4:1 target aspect ratio and 1.5 times for 16:9 target and for practical values of target etendue.
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