Some experiences on electricity production at low powers with DSG using parabolic troughs

R. Almanza; A. Lentz; L. Santiago; A. Valdés

doi:doi:10.1051/jp4:1999334

Numéro		J. Phys. IV France Volume 09, Numéro PR3, March 1999 Proceedings of the 9^th SolarPACES International Symposium on Solar Thermal Concentrating Technologies STCT 9


Page(s)		Pr3-229 - Pr3-232
DOI		https://doi.org/10.1051/jp4:1999334

Proceedings of the 9^th SolarPACES International Symposium on Solar Thermal Concentrating Technologies
STCT 9

J. Phys. IV France 09 (1999) Pr3-229-Pr3-232
DOI: 10.1051/jp4:1999334

Some experiences on electricity production at low powers with DSG using parabolic troughs

R. Almanza, A. Lentz, L. Santiago and A. Valdés

Instituto de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, Mexico

Abstract
The following aspects have been carried ont in order to implement the direct steam generation (DSG) which works with 4 parabolic troughs modules: 1) Control with computer has been adapted to this system, mainly to study transient states. 2) Some first surface aluminium mirrors have been installed in some regions of the parabolic troughs. During two years their reflectance have not changed. 3) A commercial generator with an efficiency of about 90% has been installed, so solar-electricity efficiency has increased to about 8%. 4) A bimetallic compound pipe absorber (bushing) of copper and steel is proposed to be installed in the future.