• ORC and compound ejector-multi evaporator vapour compression systems are combined. Nine ultra-low global warming potential refrigerant pairs proposed to replace R134a R245fa. Condenser waste heat recovery increases the overall coefficient of performance. The pair R1234ze(Z)/R1234ze(E) results in highest energy This article evaluates exergy performance a novel dual fluid combined organic Ranki...

From 2006 to 2011 the U.S. national energy consumption for powering and cooling IT servers is estimated to grow from a cost of 4.5 to 7.4 billion dollars as reported by a recent EPA study [1] which included current efficiency improvement trends. With growing national concern for energy efficiency and environmental stewardship, current power utilization trends in HPC and data centers cannot cont...

Energy delivery at well construction in regions with hard climate is distinguished by variable demand in electric and heat power. Energy consumption of drilling equipment, production and living facilities varies greatly during the year, depending on power load charts and climate conditions. Power supply of remote well construction sites is mostly accomplished by operating autonomous power sourc...

The reasonable and efficient use of the abundant biomass resources in rural areas has not been realized. Therefore, concept a combined cooling, heating, power (CCHP) microgrid system, considering pyrolysis gasification, developed by researchers. A gasification device can fully play role absorbing wind energy. Meanwhile, order to minimize operating cost each micropower supply unit, as well envir...

Energy efficiency and renewable energy solutions in buildings is an important actual research topic. Operating fixed costs of sustainable can be reduced by using optimization models. We developed a novel model applied it for mixed-type building with commercial, office, residential parts Finland. The determines the optimal configuration, dimensioning, operation different local production storage...

Biomass gasification processes are more commonly integrated to gas turbine based combined heat and power (CHP) generation systems. However, efficiency can be greatly enhanced by the use of more advanced power generation technology such as solid oxide fuel cells (SOFC). The key objective of this work is to develop systematic site-wide process integration strategies, based on detailed process sim...