The Experts below are selected from a list of 6057 Experts worldwide ranked by ideXlab platform
Clayton M Wheeler - One of the best experts on this subject based on the ideXlab platform.
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pyrolysis of forest residues an approach to techno economics for bio fuel production
Fuel, 2017Co-Authors: Jose L Carrasco, Sampath Gunukula, Akwasi A Boateng, Charles A Mullen, William J Desisto, Clayton M WheelerAbstract:Abstract The techno-economics for producing liquid fuels from Maine forest residues were determined from a combination of: (1) laboratory experiments at USDA-ARS’s Eastern Regional Research Center using hog fuel (a secondary woody residue produced from mill byproducts such as sawdust, bark and shavings) as a feedstock for pyrolysis to establish product yields and composition, and (2) Aspen Plus® process simulation for a feed rate of 2000 dry metric tons per day to estimate energy requirements and equipment sizes. The simulated plant includes feedstock sizing and drying, pyrolysis, hydrogen production and hydrotreatment of pyrolysis oils. The biomass is converted into bio-oil (61% yield), char (24%) and gases (15%) in the pyrolysis reactor, with an energy demand of 17%. The bio-oil is then hydrotreated to remove oxygen, thereby producing hydrocarbon fuels. The final mass yield of gasoline/diesel hydrocarbons is 16% with a 40% energy yield based on the dry biomass fed, this yield represents a fuel production of 51.9 gallons per dry metric ton of feedstock. A unique aspect of the process simulated herein is that pyrolysis char and gases are used as sources for both thermal energy and hydrogen, greatly decreasing the need to input fossil energy. The total capital investment for a grass-roots plant was estimated to be US$427 million with an Annual Operational Cost of US$154 million. With a 30 year project life, a minimum fuel selling price was determined to be US$6.25 per gallon. The economic concerns are related to high capital Costs, high feedstock Costs and short hydrotreating catalyst lifetimes.
Gregory J Beilman - One of the best experts on this subject based on the ideXlab platform.
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a health system based critical care program with a novel tele icu implementation Cost and structure details
Journal of The American College of Surgeons, 2014Co-Authors: Spyridon Fortis, Craig R Weinert, Robyn Bushinski, Alison Koehler, Gregory J BeilmanAbstract:Background Improving the efficiency of critical care service is needed as the shortfall of intensivists is increasing. Standardizing clinical practice, telemedicine, and organizing critical care service at a health system level improves outcomes. We developed a health system Critical Care Program based at an academic medical center. The main feature of our program is an intensivist who shares on-site and telemedicine clinical responsibilities. Tele-ICU facilitates the standardization of high-quality critical care across the system. A common electronic medical record made the communications among the ICUs feasible. Combining faculty from medical and surgical critical care divisions increased the productivity of intensivists. Study Design We retrospectively reviewed the administrative database data from 2011 and 2012, including mean census, number of transfers, age, sex, case mix index, mortality, readmissions, and financial data. Results The Critical Care program has 106 adult ICU beds; 54 of those beds can be managed remotely using tele-ICU based at the main University hospital. The mean midnight census of the system for 2012 was 69.44 and total patient-days were 34,406. The capital Cost of the tele-ICU was $1,186,220. The Annual Operational Cost is $1,250,112 or $23,150 per monitored ICU-bed. Unadjusted mortality was 6.5% before and 4.9% after implementation (p Conclusions We describe a novel health system level ICU program built using "off the shelf" technology based on a large University medical center and a tele-ICU with a full degree of treatment authority across the system.
Jose L Carrasco - One of the best experts on this subject based on the ideXlab platform.
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pyrolysis of forest residues an approach to techno economics for bio fuel production
Fuel, 2017Co-Authors: Jose L Carrasco, Sampath Gunukula, Akwasi A Boateng, Charles A Mullen, William J Desisto, Clayton M WheelerAbstract:Abstract The techno-economics for producing liquid fuels from Maine forest residues were determined from a combination of: (1) laboratory experiments at USDA-ARS’s Eastern Regional Research Center using hog fuel (a secondary woody residue produced from mill byproducts such as sawdust, bark and shavings) as a feedstock for pyrolysis to establish product yields and composition, and (2) Aspen Plus® process simulation for a feed rate of 2000 dry metric tons per day to estimate energy requirements and equipment sizes. The simulated plant includes feedstock sizing and drying, pyrolysis, hydrogen production and hydrotreatment of pyrolysis oils. The biomass is converted into bio-oil (61% yield), char (24%) and gases (15%) in the pyrolysis reactor, with an energy demand of 17%. The bio-oil is then hydrotreated to remove oxygen, thereby producing hydrocarbon fuels. The final mass yield of gasoline/diesel hydrocarbons is 16% with a 40% energy yield based on the dry biomass fed, this yield represents a fuel production of 51.9 gallons per dry metric ton of feedstock. A unique aspect of the process simulated herein is that pyrolysis char and gases are used as sources for both thermal energy and hydrogen, greatly decreasing the need to input fossil energy. The total capital investment for a grass-roots plant was estimated to be US$427 million with an Annual Operational Cost of US$154 million. With a 30 year project life, a minimum fuel selling price was determined to be US$6.25 per gallon. The economic concerns are related to high capital Costs, high feedstock Costs and short hydrotreating catalyst lifetimes.
Lund, Peter D. - One of the best experts on this subject based on the ideXlab platform.
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Energy integration and interaction between buildings and vehicles
'Elsevier BV', 2021Co-Authors: Zhou Yuekuan, Cao Sunliang, Hensen, Jan L.m., Lund, Peter D.Abstract:Clean power production, buildings, and transportation are key areas for climate change mitigation. Their tighter integration decreases not only the emissions, but also the energy consumption of buildings and transportation. Energy integration and interactions between buildings and vehicles are dependent on the type of building, vehicle, and renewable energy system, as well as the local climatic conditions. The current academic literature does not provide a systematic analysis of this topic. In the study, different energy management systems and advanced energy control strategies have been formulated to study such interactions both from a building and a vehicle perspective. Furthermore, technical solutions have been systematically reviewed in terms of the enhancement of energy interaction capabilities, in particular from the standpoint of renewable energy systems, energy/fuel charging facilities, and control strategies. Assessment criteria employed in the review of solutions include grid interaction, Annual Operational Cost, Annual net CO2 emissions, and Annual matching capability. The literature review identifies several technical challenges that need further consideration such as capacity expansion and power fluctuation of the electric grid, low efficiency of heat recovered from electricity generation, and depreciation of vehicles. The future outlook and potential for the energy interaction networks between buildings and vehicles have also been presented.Peer reviewe
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Energy integration and interaction between buildings and vehicles: a state-of-the-art review
'Elsevier BV', 2019Co-Authors: Zhou Yuekuan, Cao Sunliang, Hensen, Jlm Jan, Lund, Peter D.Abstract:\u3cp\u3eClean power production, buildings, and transportation are key areas for climate change mitigation. Their tighter integration decreases not only the emissions, but also the energy consumption of buildings and transportation. Energy integration and interactions between buildings and vehicles are dependent on the type of building, vehicle, and renewable energy system, as well as the local climatic conditions. The current academic literature does not provide a systematic analysis of this topic. In the study, different energy management systems and advanced energy control strategies have been formulated to study such interactions both from a building and a vehicle perspective. Furthermore, technical solutions have been systematically reviewed in terms of the enhancement of energy interaction capabilities, in particular from the standpoint of renewable energy systems, energy/fuel charging facilities, and control strategies. Assessment criteria employed in the review of solutions include grid interaction, Annual Operational Cost, Annual net CO \u3csub\u3e2\u3c/sub\u3e emissions, and Annual matching capability. The literature review identifies several technical challenges that need further consideration such as capacity expansion and power fluctuation of the electric grid, low efficiency of heat recovered from electricity generation, and depreciation of vehicles. The future outlook and potential for the energy interaction networks between buildings and vehicles have also been presented. \u3c/p\u3
Spyridon Fortis - One of the best experts on this subject based on the ideXlab platform.
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a health system based critical care program with a novel tele icu implementation Cost and structure details
Journal of The American College of Surgeons, 2014Co-Authors: Spyridon Fortis, Craig R Weinert, Robyn Bushinski, Alison Koehler, Gregory J BeilmanAbstract:Background Improving the efficiency of critical care service is needed as the shortfall of intensivists is increasing. Standardizing clinical practice, telemedicine, and organizing critical care service at a health system level improves outcomes. We developed a health system Critical Care Program based at an academic medical center. The main feature of our program is an intensivist who shares on-site and telemedicine clinical responsibilities. Tele-ICU facilitates the standardization of high-quality critical care across the system. A common electronic medical record made the communications among the ICUs feasible. Combining faculty from medical and surgical critical care divisions increased the productivity of intensivists. Study Design We retrospectively reviewed the administrative database data from 2011 and 2012, including mean census, number of transfers, age, sex, case mix index, mortality, readmissions, and financial data. Results The Critical Care program has 106 adult ICU beds; 54 of those beds can be managed remotely using tele-ICU based at the main University hospital. The mean midnight census of the system for 2012 was 69.44 and total patient-days were 34,406. The capital Cost of the tele-ICU was $1,186,220. The Annual Operational Cost is $1,250,112 or $23,150 per monitored ICU-bed. Unadjusted mortality was 6.5% before and 4.9% after implementation (p Conclusions We describe a novel health system level ICU program built using "off the shelf" technology based on a large University medical center and a tele-ICU with a full degree of treatment authority across the system.