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A simultaneous approach for integration of thermal energy storages in industrial processes using multiperiod heat integration

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Energy Storage and Saving 2022年第2期1卷 117-128页

作者： Simon Möhren Christian Schäfer Jörg Meyer hartmut krause SWK E2 Institute for Energy Technology and Energy Management Hochschule Niederrhein University of Applied ScienceKrefeld47805Germany Institute of Thermal Engineering TU Bergakademie FreibergFreiberg09599Germany

In times of increasing global warming,enormous efforts are required to rapidly reduce greenhouse gas(GHG)*** to the EU’s target of climate neutrality by 2050 and the even more ambitious goal of becoming climate-neutral in Germany by 2045,it is necessary to systematically increase energy efficiency and decarbonize the industrial heat *** methods of heat integration can be used to exploit existing potentials for waste heat utilization and to integrate renewable technologies for heating and *** using a non-stationary,multiperiod approach,additional energy savings can be achieved by integrating a thermal energy storage(TES)that enables heat transportation over *** paper presents a simultaneous approach for thermal energy storage integration into multiperiod heat integration *** approach can be used to minimize energy demand,costs and CO 2 emissions and is demonstrated in two case *** case study 1,it is shown that the presented approach is capable of integrating a TES properly into a simple multiperiod heat integration problem with two *** case study 2,a simplified example from a cosmetics manufactory is *** total utility demand can be reduced by up to 44.3%due to TES integration and the energetic optimal storage size can be determined as 125 m *** savings are strongly dependent on the constellation of heat flows between the periods,on the temperature levels and on the storage *** reductions of energy demand,costs and CO 2 emissions can be achieved with TES being properly integrated into a suitable operating environment.

关键词： Multiperiod heat integration Thermal energy storage Waste heat utilization Heat exchanger network Energy efficiency

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Designing a Security Architecture for a P2P Video Conference System

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China Communications 2008年第2期5卷 49-58页

作者： hartmut Koeni Department of Computer Science Brandenburg University of Technology Cottbus

More and more modern group oriented collaborativeapplications use the peer-to-peer(P2P)paradigm tobe independent of expensive infrastructures as theyare,for instance,provided for audio and video conferencesby H.323 *** collaborativeP2P solutions require appropriate mechanismsto protect group privacy and data integrity.A centralizedclient/server based video conference system canbe well shielded in a standard manner,whilst thereare no off-the-shelf approaches to secure a P2P videoconference up to *** paper addresses this issueand presents a flexible security *** BRAVIS system[4]as an example it shows howthe architecture can be embedded into a P2P videoconferencing system.

关键词： Peer-to-peer (P2P) security architecture video conference

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Quenchants for Induction Hardening for the Automotive Industry, Choice and Maintenance

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材料热处理学报 2004年第5期25卷 514-518页

作者： hartmut Beitz Thorsten Beitz PETROFER CHEMIE Headquarters Hildesheim GermanyPETROFER CHEMIE Department of Heat Treatment Hildesheim Germany

The different types of quenchants for induction hardening - mainly for shower quenching - but also for immersion will be described in regard to their properties, film-formation, remaining residues, how to handle these etc.. Furtheron the maintenance of such quench fluids will be desribed in detail regarding concentration control, control of growth of micro-organism, contamination and maintenance.

关键词：感应淬火淬火剂绝缘薄膜热处理

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CO_(2)Plume Geothermal(CPG)Systems for Combined Heat and Power Production:an Evaluation of Various Plant Configurations

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Journal of Thermal Science 2022年第5期31卷 1266-1278页

作者： SCHIFFLECHNER Christopher WIELAND Christoph SPLIETHOFF hartmut Chair of Energy Systems TUM School of Engineering and DesignTechnical University of Munich85747 GarchingGermany

CO_(2) Plume Geothermal(CPG)systems are a promising concept for utilising petrothermal resources in the context of a future carbon capture utilisation and sequestration *** geothermal energy has a tremendous worldwide potential for decarbonising both the power and heating *** paper investigates three potential CPG configurations for combined heating and power generation(CHP).The present work examines scenarios with reservoir depths of 4 km and 5 km,as well as required district heating system(DHS)supply temperatures of 70℃ and 90℃.The results reveal that a two-staged serial CHP concept eventuates in the highest achievable net power *** a thermosiphon system,the relative net power reduction by the CHP option compared with a sole power generation system is significantly lower than for a pumped *** net power reduction for pumped systems lies between 62.6%and 22.9%.For a thermosiphon system with a depth of 5 km and a required DHS supply temperature of 70℃,the achievable net power by the most beneficial CHP option is even 9.2%higher than for sole power generation *** second law efficiency for the sole power generation concepts are in a range between 33.0%and 43.0%.The second law efficiency can increase up to 63.0%in the case of a CHP ***,the combined heat and power generation can significantly increase the overall second law efficiency of a CPG *** evaluation of the achievable revenues demonstrates that a CHP application might improve the economic performance of both thermosiphon and pumped CPG ***,the minimum heat revenue required for compensating the power reduction increases with higher electricity *** summary,the results of this work provide valuable insights for the potential development of CPG systems for CHP applications and their economic feasibility.

关键词： deep geothermal energy combined heat and power generation CO_(2)plume geothermal systems petrothermal resources carbon capture utilisation and storage

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Mechanisms of sterile inflammation in acetaminophen hepatotoxicity

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Cellular & Molecular Immunology 2018年第1期15卷 74-75页

作者： hartmut Jaeschke Department of Pharmacology Toxicology&TherapeuticsUniversity of Kansas Medical CenterKansas City66160KSUSA.

Acetaminophen(APAP)hepatotoxicity is the most frequent cause of acute liver failure in many Western *** intracellular signaling mechanisms of APAP-induced cell death have been extensively studied,and the critical roles of key features such as reactive metabolite generation,glutathione depletion,mitochondrial oxidant stress and peroxynitrite formation,mitochondrial dysfunction,and nuclear DNA fragmentation are all well-established.1 Not surprisingly,a substantial number of intracellular molecules,termed damage-associated molecular patterns(DAMPs),are passively released into the circulation during the resulting *** include high mobility group box 1 protein,nuclear DNA fragments and mitochondrial DNA,with most being recognized by pattern recognition receptors such as various Toll-like receptors(TLRs)on macrophages.

关键词： fragmentation nitrite sterile

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A derived grid-based model for simulation of pedestrian flow

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第2期10卷 209-220页

作者： Günter BRWOLFF hartmut SCHWANDT Institut für Mathematik Technische Universitt Berlin

We present a derived grid-based model for the simulation of pedestrian flow. Interactions among pedestrians are considered as the result of forces within a certain neighbourhood. Unlike the social force model,the forces here,as in Newtonian physics,are proportional to the inverse of the square of the distance. Despite the notion of neighbourhood and the underlying grid,this model differs from the existing cellular automaton(CA) models in that the pedestrians are treated as individuals. Bresenham's algorithm for line rastering is applied in the step calculation.

关键词： Bresenham's algorithm Cellular automaton (CA) Pedestrian dynamics Social force model

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A pilot scale trickling filter with pebble gravel as media and its performance to remove chemical oxygen demand from synthetic brewery wastewater

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第10期14卷 924-933页

作者： Haimanot HABTE LEMJI hartmut ECKST DT Faculty of Agricultural and Environmental Sciences Institute of Hydromechanics and Water Management University of Rostock

Evaluating the performance of a biotrickling filter for the treatment of wastewaters produced by a company manufacturing beer was the aim of this study.A pilot scale trickling filter filled with gravel was used as the experimental *** scale plant experiments were made to evaluate the performance of the trickling filter aerobic and anaerobic biofilm systems for removal of chemical oxygen demand(COD) and nutrients from synthetic brewery *** evaluation data of the trickling filter were generated under different experimental *** trickling filter had an average efficiency of(86.81±6.95)% as the hydraulic loading rate increased from 4.0 to 6.4 m3/(m2·d).Various COD concentrations were used to adjust organic loading rates from 1.5 to 4.5 kg COD/(m3·d).An average COD removal efficiency of(85.10±6.40)% was achieved in all wastewater concentrations at a hydraulic loading of 6.4 m3/(m2·d).The results lead to a design organic load of 1.5 kg COD/(m3·d) to reach an effluent COD in the range of 50–120 mg/*** can be concluded from the results of this study,organic substances in brewery wastewater can be handled in a cost-effective and environmentally friendly manner using the gravel-filled trickling filter.

关键词： Biodegradation Pilot scale trickling filter Aerobic treatment Brewery wastewater Chemical oxygen demand(COD) Trickling filter performance

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Liuweiwuling tablets protect against acetaminophen hepatotoxicity: What is the protective mechanism?

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World Journal of Gastroenterology 2016年第11期22卷 3302-3304页

作者： Kuo Du hartmut Jaeschke Department of Pharmacology Toxicology and TherapeuticsUniversity of Kansas Medical Center

Study of the effects of natural products, including traditional Chinese Medicines, on acetaminophen hepatotoxicity has gained considerable popularity in recent years, and some of them showed positive results and even promising therapeutic potentials. A recent report suggested that Liuweiwuling tablets protect against acetaminophen hepatotoxicity and promote liver regeneration in a rodent model through alleviating the inflammatory response. However, several concerns exist regarding the limitations of the experimental design and interpretation of the data presented in this manuscript.

关键词： Acetaminophen hepatotoxicity Liuweiwuling Sterile inflammation Natural products Liver regeneration

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Underestimated contribution of HONO to indoor OH radicals: an emerging concern

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Science Bulletin 2018年第21期63卷 1383-1384页

作者： Xue Li Sasho Gligorovski hartmut Herrmann Institute of Mass Spectrometry and Atmospheric Environment Jinan UniversityGuangzhou 510632China State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China School of Environmental Science and Engineering Shandong UniversityQingdao 266237China School of Environmental Sdence and Engineering Fudan UniversityShanghai 200433China Atmospheric Chemistry Department (ACD) Leibniz-lnstitute for Tropospheric Research (TROPOS)Permoserstr.1504318LeipzigGermany

For a long time,the hydroxyl (OH)radicals has attracted particular attention not only because it is the most important species in the photooxidation cycles in the atmosphere but also because it can oxidize volatile organic compounds (VOCs)to form secondary oxygenated gas species and aerosols,some of which can be toxic and *** most people spend 80%-90% of their life-time indoors,a better understanding of the formation,occurrence and reaction of OH radicals indoors is crucial to assess the potential impact on human ***,the secondary pollutants can be substantially reduced in indoor environments only with comprehensive knowledge of the oxidative chemistry and subsequent chains of chemical reactions that pollutants undergo.

关键词： Underestimated HONO VOCs

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Alcoholic Hepatitis:Lost in Translation

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Journal of Clinical and Translational Hepatology 2018年第1期6卷 89-96页

作者： Benjamin L. Woolbright hartmut Jaeschke Department of Pharmacology Toxicology&TherapeuticsUniversity of Kansas Medical CenterKansas CityKansasUSA

Alcoholic hepatitis is the most severe and acute form of alcoholic liver *** mortality rate associated with alcoholic hepatitis is high,largely due to the lack of suitable pharmacological *** there has been substantial research in the area,generating pharmacological interventions has been plagued by the lack of a robust mouse model both for testing and for understanding the underlying pathology.A number of major notable advances have been made in this area recently,with the goal of generating a mouse model of alcoholic *** purpose of this article is to review recent advances in modeling alcoholic liver disease both in vitro and in vivo in the mouse,and place them in the context of the greater spectrum of alcoholic liver disease,with a focus on how we can translate current advances into a high-fidelity model of alcoholic *** addition,we will review the basic mechanisms of alcoholic hepatitis as it is currently understood,focusing on recent advancements in diagnosis,prognosis and current pathophysiology,especially as it relates to the profound immune dysfunction present during alcoholic hepatitis.

关键词： Alcoholic hepatitis Alcohol Liver disease Cirrhosis Prognosis Keratin-18

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