This study uses a stochastic production frontier to model energy efficiency trends, in 85 countries over a 37 year … and a theoretical model of energy-efficient technology choice. An improvement in a country’s energy efficiency is measured … across countries. The study shows that energy efficiency rises with increasing general total factor productivity. Energy …

In this paper, an energy and exergy analysis is performed on four different wind power systems, including both … variables are analyzed and the predicted results are discussed. The exergetic efficiency of each wind turbine is studied for …

cooling along with evaporative aftercooling has an obvious increase in the energy and exergy efficiency compared to the basic … in detail. The effects of some main parameters on the exergy destruction and exergy efficiency of the cycle are … gas turbine cycle cogeneration. It is further shown that the first-law efficiency, power to heat ratio and exergy …

produce hot water and a reverse osmosis desalination unit to produce fresh water. Energy and exergy analyses and an …, component purchasing and environmental impact, and the system exergy efficiency. The total cost rate of the system is minimized … while the cycle exergy efficiency is maximized using an evolutionary algorithm. To provide insight, the Pareto frontier is …

The energy and exergy utilizations in the U.S. manufacturing sector are analyzed by considering the energy and exergy … the Manufacturing Energy Consumption Survey (MECS). Since the MECS data exhibit many gaps, data from other sources are … starting point to estimate the site and embodied energy and exergy efficiencies. The average site energy and exergy …

TES (Thermal energy storage) can enhance energy systems by reducing environmental impact and increasing efficiency …. Thermochemical TES is a promising new type of TES, which permits more compactness storage through greater energy storage densities …. In this article, closed and open thermochemical TES is investigated using energy and exergy methods. The latter method …

The solidification process in encapsulated ice thermal energy storage (EITES) system is simulated for water …-filled capsules while neglecting storage tank wall effects and heat penetration. Energy and exergy efficiencies were calculated while … including seven geometries, five inlet HTF temperatures, and three HTF flow rates. It was found that the energy efficiencies did …

within these circuits. A second law analysis is used to examine the areas of low exergy efficiency in the system and minimize …

The present study examined unit roots, causality, cointegration, and efficiency of the natural gas market using the …