Reducing C02 emissions for addressing climate change concerns is becoming increasingly important as the C02 concentration in the atmosphere has increased rapidly since the industrial revolution. Many mitigation methods, including C02 sequestration and novel C02 utilization, are currently-under investigation. Most of these processes require C02 in a concentrated form. However the C02 from large ...

Abstract In this study, we used a hot-pressing process to enhance the photocatalytic properties of TiO 2 /Fe O 3 bimetallic oxide with periodic patterned structure on surface increase photon absorption for photocatalysis in oxygen evolution reaction water splitting. The hot-pressed samples show that combining two metal oxides improves band edge electrode at different wavelengths. obtained using...

Solar heating and cooling (SHC) systems are currently attracting attention, especially in times of increasing energy prices supply crises. In lower prices, absorption SHC were not competitive to compression supported by photovoltaic (PV) modules due the high investment costs total efficiency. This paper aims discuss current changes terms feasibility application a small system mild Mediterranean...

A conceptual design for a small HTGR in the 100 MWe size range is described. The reactor drives indirect closed-cycle gas turbine power conversion units using helium as the working fluid and provides both electricity and thermal energy (via a 3800 F hot-water utility system) to serve the projected needs of large U.S. Army installations and industrial facilities in the continental U.S. in the po...

The environmental impacts of products are evaluated based on an assessment the influence material and energy flows that product system exchanges with environment. University Southern Denmark is also dealing this, from point view sustainable development, drinking watercoolers being investigated using Life Cycle Assessment method. This research conducts a Impact water supply systems at university...

For Nonlinear Model Predictive Control (NMPC) to be implemented in real application, data driven models are advantageous since they can be easily constructed and are relatively fast, compared to first principle based models (simplified calculation [ISO 13790], dynamic simulation [EnergyPlus, ESP-r, TRNSYS, etc.], state space models, etc.). Gaussian Process Model (GPM), one of the data-driven ap...

Energy needs of air conditioning systems are constantly growing worldwide, due to climate change and standards buildings. Among the possible systems, solar heating cooling based on reversible heat pumps thermally driven chillers a viable option for ensuring space different users. The high installation costs limit their diffusion, however, under specific circumstances (climate, type building, us...

A novel lignosilicate (LS) composite was synthesized from pre-extracted (hot water, 80% ethanol, 0.3 N NaOH) lignin of rice husk (RH) using TEOS as matrix. The extracted lignins were subjected to surface modification by acetylation followed by in situ synthesis of lignosilicate (LS) composites by sol-gel method for application in nickel removal. LS were characterized by FT-IR, scanning electron...