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Love, Norman D.

Publications and source records attributed to Love, Norman D..

5 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2019

Systems and methods for wireless temperature sensing

Wireless temperature sensing systems and methods include an active sensor for determining temperature parameters in harsh environments, such as in very high temperature conditions, and wireless conveyance of the detected parameters. In an example embodiment, a pyroelectric element can generate a voltage when subjected to a temperature change. A coil is electrically coupled to the pyroelectric element and configured to generate a magnetic field in response to a current induced by the voltage generated by the pyroelectric element. A pickup is electromagnetically coupled with and detects the magnetic field generated by the coil, and the pickup is configured to provide an output corresponding to the detected magnetic field.

Lin, Yirong↗
DOE OSTI2018

Design and Experimental Demonastration of a High Pressure Oxy-Methane Combustor

Motivated by the advantages of pressured oxy-combustion, the primary purpose of this experimental study is to design and test a methane-oxygen burner and combustor. The combustor is designed to operate at a firing input of 500 kW and 20 bar chamber pressure. Multiple components of the system are first modeled in CFD to predict performance and design for safety. These components include the methane-oxygen burner, ignition system, and combustor pressurization systems. The simulation is conducted using a 2D domain. Using the expected performance parameters, the experimental system was built and tested. In this particular paper, the test data are presented for 160 kW power inputs and 7 bar chamber pressure. Afterwards, a qualitative and quantitative comparison is performed. For example, in order to pressurize the combustor, the exit area was restricted. The CFD model shows that to achieve a pressure of 7 bar in the chamber an exit diameter of 6.4mm is needed. However, during actual testing a 3.175mm exit diameter orifice is used. This discrepancy between the test results and CFD results is due to the leaking of gases in the combustor. Future testing includes the effect of convective CO2 cooling at the combustor wall and water based cooling at the combustor end cap

03 NATURAL GAS↗
DOE OSTI2018

Thermodynamic Analysis of ENEL and TIPS Oxy-coal Power Cycles

Pressurized oxy-coal combustion is one method that may provide a means of boosting the cycle efficiency and reducing pollutant emission from coal plants. Two pressurized oxy-coal combustion cycles are analyzed in this study. The ThermoEnergy Integrated Power System (TIPS) coal power cycle, which operates at a pressure of 8 MPa, and the ENEL cycle, which operates at a pressure of 1MPa. For this study both cycles are modeled using ASPEN Plus, and the performance of the different components and efficiencies of both systems analyzed. The gross input power to the system is via a coal slurry at a power rating of 550MW. The flue gases are recycled in each configuration at a rate of 25, 50, and 75% by mass. For both cycles the highest calculated efficiency occurs at a recirculation rate of 75%. At this condition, the efficiency of the cycles are 38% and 34% for the ENEL and TIPS cycles, respectively. It is determined that for these cycles that the mass flow rate of the flue gas impact the cycle efficiency more than the combustor temperature due to enhanced heat transfer throughout the system.

01 COAL, LIGNITE, AND PEAT↗