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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 721 records · Page 40
All sourcesNASA NTRSDOE OSTI
DOE OSTI2017

New Carrollton Federal Building Lighting Retrofit Captures Cool Savings

Case study describes how the U.S. General Services Administration cut a $291,000 annual lighting electric bill to an estimated $53,500 by upgrading their fluorescent lighting to a new LED troffer lighting and controls system in the New Carrollton Federal Building in Lanham, Maryland. The lighting project yielded an 82% reduction in energy use and earned GSA two awards for exemplary performance from the Interior Lighting Campaign in 2016.

General Services Administration↗
DOE OSTI2017

Retrofitting a Geothermal Plant with Solar and Storage to Increase Power Generation

Solar hybridization using concentrating solar power (CSP) can be an effective approach to augment the power generation and power cycle efficiency of a geothermal power plant with a declining resource. Thermal storage can further increase the dispatchability of a geothermal/solar hybrid system, which is particularly valued for a national grid with high renewable penetration. In this paper, a hybrid plant design with thermal storage is proposed based on the requirements of the Coso geothermal field in China Lake, California. The objective is to increase the power production by 4 MWe. In this system, a portion of the injection brine is recirculated through a heat exchanger with the solar heat transfer fluid, before being mixed with the production well brine. In the solar heating loop the brine should be heated to at least 155 degrees C to increase the net power. The solar field and storage were sized based on solar data for China Lake. Thermal storage is used to store excess power at the high-solar-irradiation hours and generate additional power during the evenings. The solar field size, the type and capacity of thermal storage and the operating temperatures are critical factors in determining the most economic hybrid system. Further investigations are required to optimize the hybrid system and evaluate its economic feasibility.

15 GEOTHERMAL ENERGY↗
DOE OSTI2019

Carbon Capture Retrofit Tools

Presented by NETL at 2019 Carbon Capture, Utilization, Storage, and Oil and Gas Technologies Integrated Review Meeting, 08/19

Zoelle, Alexander J↗
DOE OSTI2017

Troffer Retrofits: Northern Arizona University Building Shines with Innovative Lighting Design - Interior Lighting Campaign

This case study describes lighting efficiency measures in Northern Arizona University's Student and Academic Services Building. The building was designed with space-by-space lighting controls to enable scheduling and dimming in offices, conference rooms, and classrooms, and achieved 46% energy savings compared to standard code-compliant lighting.

education, lighting, controls, dimming, classroom,↗