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RISLow-Temperature Solar Thermal Systems: An Untapped Energy Resource in the United States
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Solar energy to heat water, to warm buildings and to provide low temperature heat for industry and agriculture is a well understood technology. Of these applications, solar hot water is the ...
Natural Convective Flow and Heat Transfer in a Collector Storage with an Immersed Heat Exchanger: Numerical Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A three-dimensional model and dimensionless scale analysis of the transient fluid dynamics and heat transfer in an inclined adiabatic water-filled enclosure with an immersed cylindrical cold sink ...
Transient Natural Convection Heat Transfer Correlations for Tube Bundles Immersed in a Thermal Storage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A scale analysis of the transient discharge of a fully mixed thermal storage vessel with an immersed single-tube heat exchanger is extended to provide a generalized expression for the transient ...
Discharge of Thermal Storage Tanks via Immersed Baffled Heat Exchangers: Numerical Model of Flow and Temperature Fields
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A model of a thermal storage tank in which stored energy is extracted via an immersed heat exchanger is presented and used to predict transient temperature and velocity fields in tanks with ...
Multizone Porous Medium Model of Thermal/Fluid Processes During Discharge of an Inclined Rectangular Storage Vessel Via an Immersed Heat Exchanger
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The transient natural convective thermal/fluid processes during discharge of an inclined rectangular solar storage tank via an immersed heat exchanger are modeled and compared to prior experimental ...
Fluid Dynamics of a Transverse Jet Reactor for Zinc Aerosol Hydrolysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new concept for control of the flow field, and thus particle yield, in an aerosol reactor designed for the hydrolysis of Zn in the two-step Zn/ZnO solar thermochemical cycle for hydrogen ...
Splitting Water and Carbon Dioxide via the Heterogeneous Oxidation of Zinc Vapor: Thermodynamic Considerations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The heterogeneous oxidation of zinc vapor is proposed as a promising reaction path for the exothermic step in the two-step Zn/ZnO solar thermochemical water and carbon dioxide splitting cycles. ...
On the Effectiveness of Baffles in Indirect Solar Storage Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Parameters that control heat transfer and mixing in energy extraction from indirect solar storage tanks that employ an immersed heat exchanger with a straight baffle beneath are identified and ...
Calcium Carbonate Formation on Cross-Linked Polyethylene (PEX) and Polypropylene Random Copolymer (PP-r)
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The accumulation of calcium carbonate (referred to as scale) on the surface of cross-linked polyethylene and polypropylene random copolymer tubes is compared to that on copper. Water with total ...
What is the Best Solution to Improve Thermal Performance of Storage Tanks With Immersed Heat Exchangers: Baffles or a Divided Tank?
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Prior studies of indirect water storage tanks that employ an immersed heat exchanger to discharge the stored energy identified two potential methods of improving the rate of energy extraction: ...