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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 1,405 records · Page 78
All sourcesNASA NTRSDOE OSTI
DOE OSTI2018

Devices and methods for photoelectrochemical water splitting

The present disclosure relates to photoelectrochemical devices and systems for capturing the energy of electromagnetic radiation and utilizing the captured energy for electrolysis to produce hydrogen gas and oxygen gas.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
DOE OSTI2018

Split heating and cooling systems

The present disclosure relates to air conditioning systems and methods. An aspect of the present disclosure is a device that includes a housing having an external surface and defining an interior volume, a heat exchanger positioned within the interior volume, a fluid line partially positioned within the interior volume, a sleeve extending from the external surface and terminating at a distal end of the sleeve, and a fluid connector. The sleeve has an outside wall spanning a length of the sleeve and defining an internal cavity, the fluid connector is positioned at or near the distal end, a portion of the fluid line is positioned within the internal cavity, and the fluid line provides a fluid connection between the heat exchanger and the fluid connector.

Booten, Charles William↗
DOE OSTI2018

Are Ducted Mini-Splits Worth It?

The project discussed in this report was a collaborative effort between the Pacific Northwest National Laboratory (PNNL) and the National Renewable Energy Laboratory (NREL). For this project, PNNL and NREL developed a prototypical simulation model for ducted minisplits based on a combination of previously modeled DHP systems and central duct system models. To understand the implications of how this model would react under different scenarios, the DMS model was then used in 5 different prototypical homes, in three different cities, each representing one of BPA’s heating zones. Electric resistance zonal heat, with window air conditioning was used as a baseline for comparison in all cases. Only one manufacturer was modeled due to budget constraints.

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATI↗
DOE OSTI2020

Concentric semi-circular split profiling for computed tomographic imaging of electronic beams

Apparatus and method for analyzing an electron beam including a circular sensor disk adapted to receive the electron beam, an inner semi-circular slit in the circular sensor disk; an outer semi-circular slit in the circular sensor disk wherein the outer semi-circular slit is spaced from the first semi-circular slit by a fixed distance; a system for sweeping the electron beam radially outward from the central axis to the inner semi-circular slit and outer second semi-circular slit; a sensor structure operatively connected to the circular sensor disk wherein the sensor structure receives the electron beam when it passes over the inner semi-circular slit and the outer semi-circular slit; and a device for measuring the electron beam that is intercepted by the inner semi-circular slit and the outer semi-circular slit.

42 ENGINEERING↗
DOE OSTI2020

Split heating and cooling systems

The present disclosure relates to air conditioning systems and methods. An aspect of the present disclosure is a device that includes a housing having an external surface and defining an interior volume, a heat exchanger positioned within the interior volume, a fluid line partially positioned within the interior volume, a sleeve extending from the external surface and terminating at a distal end of the sleeve, and a fluid connector. The sleeve has an outside wall spanning a length of the sleeve and defining an internal cavity, the fluid connector is positioned at or near the distal end, a portion of the fluid line is positioned within the internal cavity, and the fluid line provides a fluid connection between the heat exchanger and the fluid connector.

42 ENGINEERING↗