This paper gives attention to theoritical and numerical aspects of exergy analysis from solutions of the Reynolds-Averaged Navier-Stokes equations. Note that previous work has been presented at the AIAA AVIATION Forum by Petropoulos[9]. It was then a first attempt at analysing numerical behavior of our postprocessing tool and it proposed hints to f...
Whilst freeze drying is known by its high energy requirements, few studies have been conducted assessing the efficiency of freeze dryers, specially related pharmaceuticals. A quantitative analysis is conducted on a batch freeze dryer used for biopharmaceuticals, aiming to know the process efficiency and to identify the components having the highest...
A key prerequisite for the hydrogen economy is cost-effective renewable hydrogen supply. This paper provides a framework for the thermodynamic and economic assessment of solar hydrogen production from the high-temperature steam electrolysis (HTSE) route. A system configuration for the solar-driven steam electrolysis plant is proposed. The thermodyn...
A new chemical looping based process for the production of nitric oxide and hydrogen has been recently proposed and demonstrated for metal oxides such as CuO, Co3O4 and Fe2O3 (Thengane et al., 2016a). The present study extends the work and compares the conventional Ostwald process for nitric oxide production with this chemical looping based process...
In CO2 capture retrofit unit of existing coal-fired power plants, energy level mismatch between extraction steam from turbines and CO2 regeneration process always results in large exergy destruction and low thermal efficiency. Thus, a new CO2 capture system driven by double absorption heat transformer is proposed. Through the absorption heat transf...
Applying the refrigerant injection technology to air-source heat pump had been proved to be an effective access to acquire a better performance in the cold regions. In this paper, the test-bed of R410A single-cylinder rotary compressor vapor injection (SCRCVI) system with flash tank was built and measured by changing the compressor frequency f and ...
Applying the refrigerant injection technology to air-source heat pump had been proved to be an effective access to acquire a better performance in the cold regions. In this paper, the test-bed of R410A single-cylinder rotary compressor vapor injection (SCRCVI) system with flash tank was built and measured by changing the compressor frequency f and ...
In view of violent changes of thermo-physical properties, the segmental design method is adopted to explore the heat exchange performances of the transcritical nitrogen (T-N-2) evaporator used for liquid air energy storage, in which cold N-2 is heated up successively by hot propane and methanol in two wide temperature sections. The local heat capac...
In view of violent changes of thermo-physical properties, the segmental design method is adopted to explore the heat exchange performances of the transcritical nitrogen (T-N-2) evaporator used for liquid air energy storage, in which cold N-2 is heated up successively by hot propane and methanol in two wide temperature sections. The local heat capac...
Thermoeconomic analysis combines exergy and economic analysis to evaluate and improve the performance of energy systems. This study utilized exergetic production cost (EPC), based on combined exergy and life-cycle cost analysis (LCCA), to optimize the insulation thickness of a pipeline system with a variable secondary pump in a subway central cooli...
