LUZ II's proprietary, hybrid, solar-gas powered generating technology, Distributed Power Towers (DPT), is significantly more cost effective than any other solar thermal technology.
LUZ II's project-ready, Generation One technology, (DPT 550), produces reliable, peak power electricity by using solar energy to create superheated steam.
LUZ II's DPT technology consists of a number of solar clusters, each of which includes a power tower surrounded 3600 by an array of heliostats. Heliostats are flat, glass mirrors which track the sun and reflect sunlight onto a receiver, which is located on the top of a power tower. Power towers are linked together by pipelines to a central location where electricity is generated and sent to a power grid. The DPT 550 technology heats water to superheated steam at a temperature of 5500 – 5650 C. A high efficiency steam turbine converts the superheated steam to electricity, which is sent to a power grid. The DPT 550 technology is more than 40% efficient in thermal to electric conversion. Both 100 MW and 200 MW power plants are currently being designed. TECHNOLOGY COST COMPARISON: | | SEGS 6
(Original Luz parabolic trough design) | Optimum Trough
(Improved parabolic trough design) | DPT 550
(LUZ II superheated steam technology) | | Temperature(C) | 370 C | 400 C | 550 C | | Solar to Thermal Efficiency | 35% | 40% | 50% | | Gross Thermal to Electricity Efficiency | 37% | 39% | 43% | | Parasitic Power | 14% | 12% | 5% | | Solar to Electrical Efficiency | 11% | 14% | 20% | | Relative Cost Per kWhr | 100% | 90% | 70% | |
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