TY - GEN A1 - Tran, A. Phong A1 - Stathopoulos, Panagiotis T1 - Dynamic simulation and experimental validation of a high-temperature Brayton heat pump T2 - Applied thermal engineering N2 - The decarbonization of industrial process heating will require widespread adoption of high-temperature heat pumps. Brayton cycle heat pumps are capable of providing heat at temperatures that currently cannot be achieved by conventional vapor-compression cycle heat pumps. However, significant challenges remain in adapting these systems to industrial applications, particularly with regard to operational safety, control strategies, and flexibility in response to varying operational conditions. This study presents a dynamic model of a closed-loop Brayton cycle heat pump capable of producing temperatures of 250 °C and higher, validated using experimental data. The physics-based model implemented in Modelica captures key thermodynamic processes and system dynamics, including thermal inertia and volume dynamics. An optimization-based method is used to calibrate model parameters, minimizing the error between measured and simulated data. Given the significant impact of the compressor on overall heat pump performance, a novel calibration method is introduced to adjust an existing compressor map using limited measurement data. This approach ensures that the compressor behavior is represented with sufficient accuracy, smoothness, and numerical robustness. The calibrated model achieves mean-normalized root mean squared errors (NRMSE) ranging from 0.12 % to 1.46 % for temperatures, pressures, and mass flow rates. The model is applied to examine the system’s start-up and deceleration sequences, offering insights into compressor stability and heat exchanger temperature profiles. These results demonstrate the model’s utility for control design, performance evaluation, and stability analysis. KW - High temperature heat pump KW - Brayton cycle KW - Dynamic simulation KW - Modelica KW - Process heat Y1 - 2025 U6 - https://doi.org/10.1016/j.applthermaleng.2025.126536 SN - 1359-4311 VL - 274, Part B SP - 1 EP - 13 PB - Elsevier BV CY - Amsterdam ER - TY - CHAP A1 - Larcher, Thomas von A1 - Egbers, Christoph T1 - Dynamics of baroclinic instabilities using methods of non-linear time series analysis Y1 - 2005 ER - TY - JOUR A1 - Larcher, Thomas von T1 - Dynamics of baroclinic wave pattern in transition zones between different flow regimes Y1 - 2005 ER - TY - CHAP A1 - Stücke, Peter A1 - Lehmann, B. A1 - Scurtu, Nicoleta A1 - Egbers, Christoph T1 - Eccentric Couette Flow with Superimposed Crossflow Y1 - 2007 ER - TY - JOUR A1 - Stücke, Peter A1 - Lehmann, B. A1 - Scurtu, Nicoleta A1 - Egbers, Christoph T1 - Eccentric Couette Flow with Superimposed Crossflow Y1 - 2008 ER - TY - CHAP A1 - Christl, Andreas A1 - Herzog, Nicoleta A1 - Egbers, Christoph T1 - Eccentric Taylor-Couette Flow with orbital motion of the inner cylinder Y1 - 2011 ER - TY - CHAP A1 - Christl, Andreas A1 - Herzog, Nicoleta A1 - Egbers, Christoph T1 - Eccentric Taylor-Couette Flow with orbital motion of the inner cylinder Y1 - 2011 UR - http://www.mnf2011.com/papers.htm ER - TY - CHAP A1 - Christl, Andreas A1 - Gorenz, Paul A1 - Herzog, Nicoleta A1 - Egbers, Christoph T1 - Eccentric Taylor-Couette Flow with orbital motion of the inner cylinder Y1 - 2011 ER - TY - CHAP A1 - Christl, Andreas A1 - Scurtu, Nicoleta A1 - Egbers, Christoph T1 - Eccentrically Taylor-Couette Flow with orbital motion of the inner cylinder Y1 - 2011 ER - TY - JOUR A1 - Harlander, Uwe A1 - Will, Andreas A1 - Kurgansky, Michael V. A1 - Ehrendorfer, M. T1 - Editorial: Topics in modern geophysical fluid dynamics Y1 - 2008 ER -