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RISOptimal Part-Load Performance of Supercritical Carbon Dioxide Brayton Cycles During Inventory Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Supercritical carbon dioxide (sCO2) cycles are gaining attention for their efficiency and low carbon footprint in power plants. This study focuses on optimizing the performance of a 5 MW simple recuperated sCO2 Brayton ...
An Analysis for the Applicability of Monin–Obukhov Similarity Theory in Stable Conditions
Publisher: American Meteorological Society
Abstract: n analysis in a plane of the stability parameters ? = z/L (where z is a height above the ground surface and L is the Obukhov length) and bulk Richardson number RiB is proposed to examine the applicability of Monin?Obukhov ...
Analysis of Turbomachinery Losses in sCO2 Brayton Power Blocks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper analyzes the contribution of different turbomachinery loss mechanisms to the overall efficiency of a simple recuperated supercritical carbon dioxide (s-CO2) Brayton cycle for output capacities ranging from 100 ...
Influence of Geometric Parameters for a 100 kW Inward Flow Radial Supercritical CO2 Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Highly compact and efficient design makes inward flow radial (IFR) turbine a preferred choice for kilowatt scale supercritical CO2 (sCO2) power blocks. The influence of geometric design parameters on sCO2 turbine performance ...
Modeling of Metal Matrix Concentrated Solar Receivers for Supercritical Carbon Dioxide Power Blocks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Supercritical carbon dioxide (sCO2) power blocks for concentrating solar power (CSP) with novel metal matrix solar receivers have the potential to reduce operating expenses while improving overall system efficiencies. These ...
Vaneless Diffuser Modeling for Real Gas Supercritical Carbon Dioxide Flows: Need for a Data-Driven Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this work, a real gas-based vaneless diffuser (VLD) differential equation model is presented. The model requires the specification of the skin friction coefficient as input. However, the use of standard VLD friction ...
A Modulated Voltage Waveform for Enhancing the Travel Range of Dielectric Elastomer Actuators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a method to achieve high deformability levels in dielectric elastomer actuators (DEAs) by applying a modulated voltage waveform. The method relies on supplying the electrostatic energy during the specific ...
Quasi-One-Dimensional Loss Model of Volute Using Boundary Layer Approach for Inward Flow Radial Supercritical CO2 Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Inward flow radial sCO2 turbines operate at considerably higher speeds than conventional gas or steam turbines making only the low specific speed designs practically realizable. Low-specific speed designs suffer from ...
Technoeconomic Analysis of Alternative Solarized s CO2 Brayton Cycle Configurations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper evaluates cost and performance tradeoffs of alternative supercritical carbon dioxide (sCO2) closedloop Brayton cycle configurations with a concentrated solar heat source. Alternative sCO2 power cycle configurations ...
Silica Gel + Water Adsorber Chiller and Desalination System: A Transient Heat Transfer Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present work describes a silica gel + water adsorptionbased desalination and chiller system, an emerging low cost process of integrating thermal desalination and cooling by utilizing lowgrade heat. The cycle employs ...