This paper describes some of the current research in the area of lamp wall temperature control for the purpose of enhancing light output under elevated temperatures. More specifically a thermally conductive heat pipe has been employed to maintain optimum lamp wall temperature under varied ambient temperatures. Advantages of a heat pipe over previous methods of enhancing light output include no external power necessary and flexibility in orientation within the fixture. The experiments described include the calibration of a heat pipe against a known thermal load, the application of a heat pipe to a lamp in a test chamber and the placement of a heat pipe within a fixture. Theory and experimental data indicate that optimum lamp operating conditions can be maintained throughout an ambient temperature range which typically reduces light output by 20%.
BT - IEEE-IAS Annual Conference C1 -Lighting Systems Group
C2 - LBL-27440 CN - LBL-27440 CY - San Diego, CA DA - 10/1989 LA - eng N2 -This paper describes some of the current research in the area of lamp wall temperature control for the purpose of enhancing light output under elevated temperatures. More specifically a thermally conductive heat pipe has been employed to maintain optimum lamp wall temperature under varied ambient temperatures. Advantages of a heat pipe over previous methods of enhancing light output include no external power necessary and flexibility in orientation within the fixture. The experiments described include the calibration of a heat pipe against a known thermal load, the application of a heat pipe to a lamp in a test chamber and the placement of a heat pipe within a fixture. Theory and experimental data indicate that optimum lamp operating conditions can be maintained throughout an ambient temperature range which typically reduces light output by 20%.
PP - San Diego, CA PY - 1989 T2 - IEEE-IAS Annual Conference T3 - IEEE-IAS Annual Conference TI - Maintaining Optimum Light Output with a Thermally Conductive Heat Pipe ER -