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Walter Lachenmeier

Walter Lachenmeier
Consulting Engineer retired · until 2007 German Research Foundation (DFG), head of the engineering sciences group

Dr.-Ing.
(Deceased, 1945-2022)

About

36
Publications
5,900
Reads
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35
Citations
Introduction
During my work at the German Research Foundation, I have ensured to create ideal conditions for scientists to realize their ideas. For that, I have actively approached scientists when it comes to stimulating new research activities and coordinated projects, and have also aimed for synergy effects. I always promoted interdisciplinary collaboration. Note: Walter Lachenmeier passed away in 2022. His son, Dirk Lachenmeier (0000-0002-3115-864X), may be contacted for enquiries on publications.
Education
October 1965 - June 1976

Publications

Publications (36)
Article
Full-text available
This study reports the case of a lung cancer patient with increasing difficulties in falling asleep and frequent periods of wakefulness. Severe dyspnea related to pneumonitis caused as a side effect of immunotherapy worsened the situation. Eventually, a fear of falling asleep developed, including panic attacks and anxiety around choking, which was...
Preprint
Full-text available
The study reports about a case of a lung cancer patient with increasing difficulties in falling asleep and frequent periods of wakefulness. Severe dyspnea related to pneumonitis caused as a side effect of immunotherapy worsened the situation. Eventually, fear of falling asleep developed, including panic attacks and anxiety of choking, which was sho...
Experiment Findings
Full-text available
Die blaue Kurve in Abb.1 zeigt die Summe aller täglich infizierten Personen seit Beginn der Epidemie (WHO Daten). Die Epidemie ist gekennzeichnet durch zwei Wellen mit jeweils exponentiellem Wachstum der täglichen Zahl von Neuinfektionen (rot unterlegte Bereiche). Das Abklingen der ersten Welle, d.h. eine Abnahme der Zahl täglicher Neuinfektionen f...
Data
The calculation is based on the figures published in FOCUS-online (source: WHO) for the daily number of new cases and deaths in Germany from 22.1.2020 to the end of June. These levies are used to calculate the time course of the following variables or output in diagram form over time: • Number newly infected/day • Number of infected persons (cumula...
Presentation
Full-text available
The calculation is based on the figures published in FOCUS-online (source: WHO) for the daily number of new cases and deaths in Germany from 22.1.2020 to the end of June. These levies are used to calculate the time course of the following variables or output in diagram form over time: • Number newly infected/day • Number of infected persons (cumula...
Presentation
Full-text available
Grundlage der Berechnung sind in FOCUS‐online publizierte Zahlen (Quelle: WHO) der täglichen Neuerkrankungen und Todesfälle in Deutschland vom 22.1.2020 bis heute. Mit diesen Abgaben wird der zeitliche Verlauf folgender Größen berechnet bzw. in Diagrammform über der Zeit ausgegeben: • Zahl Neu Infizierter/Tag • Zahl Infizierter (Summenkurve) • Zahl...
Data
Grundlage der Berechnung sind in FOCUS‐online publizierte Zahlen (Quelle: WHO) der täglichen Neuerkrankungen und Todesfälle in Deutschland vom 22.1.2020 bis heute. Mit diesen Abgaben wird der zeitliche Verlauf folgender Größen berechnet bzw. in Diagrammform über der Zeit ausgegeben: • Zahl Neu Infizierter/Tag • Zahl Infizierter (Summenkurve) • Zahl...
Technical Report
Full-text available
Corona-Pandemie: Atemschutzmasken werden evtl. Pflicht: Woher nehmen? In den Haushalten der Bundesrepublik Deutschland lagern rund 10 Millionen alte Auto-Verbandskästen, die nach Ablauf des Haltbarkeitsdatums nicht entsorgt wurden. Jeder Verbandskasten enthält mindestens zwei sterile Dreiecktücher nach DIN 13 168-D. Aus jedem Dreieckstuch können zw...
Article
Full-text available
Epidemiological studies indicate an increased risk of esophageal cancer from the consumption of very hot foods and beverages. The contact time and the contact temperature are decisive for the risk of injury. However, measuring the contact temperature is not easy in practice. In the present study, a numerical simulation based on the solution of the...
Preprint
Full-text available
Epidemiological studies indicate an increased risk of cancer from the consumption of very hot foods and beverages. The International Agency for Research on Cancer (IARC) has already recommended threshold values for the maximum drinking temperature of very hot beverages. The contact time and the contact temperature are decisive for the risk of injur...
Preprint
Full-text available
Epidemiological studies indicate an increased risk of cancer from the consumption of very hot foods and beverages. The International Agency for Research on Cancer (IARC) has already recommended threshold values for the maximum drinking temperature of very hot beverages. The contact time and the contact temperature are decisive for the risk of injur...
Presentation
Full-text available
In Fahrzeugen mit konventionellen hydraulischen oder mechanischen Stoßdämpfern wird die aus der Dämpfung mechanischer Schwingungen des Fahrzeugaufbaus bezogene Energie in Wärmeenergie umgewandelt, die nicht genutzt werden kann. Es ist aber möglich, anstelle der herkömmlichen Stoßdämpfer linear oder rotatorisch arbeitende Generatoren einzusetzen, in...
Presentation
Full-text available
In vehicles with conventional hydraulic or mechanical shock absorbers, energy drawn from the absorption of mechanical vibrations in the vehicle structure is converted into heat energy that cannot be used. However, it is possible to use linear or rotatory generators instead of conventional shock absorbers. These can convert the energy generated by m...
Patent
Full-text available
[EN]The ball circulating heat accumulator has non-pressurized or pressurized heat exchanger (1) that is operated according to the counterflow principle. The balls are used as a solid storage medium in heat exchanger, such that geometrically defined guidance of balls to closed pipes and/or open channels system, and separation of the balls within hea...
Patent
Full-text available
The present invention relates to an apparatus, which works according to galvanic principles, in particular to a lithium-ion accumulator or, respectively, a lithium-ion cell, with at least two electrode devices (10; 20), in particular, a cathode and an anode, in particular, a separator device (30), arranged between two electrode devices, the apparat...
Patent
Full-text available
The invention relates to a battery arrangement (1) comprising at least one, but particularly a plurality of electrochemical cells (2), the at least one electrochemical cell (2) comprising O O at least one current conductor (3) extending through a casing (4) of the electrochemical cell (2), characterized in that said at least one current conductor (...
Patent
Full-text available
A prismatic electric power cell has two flat current conductors, which project Substantially perpendicular from one of the outer Surfaces of the cell and which are arranged substantially plane-parallel to each other. The current conductors each have at least one hole in the direction of the surface normal thereof, wherein the hole pattern of one cu...
Patent
Full-text available
[DE]Ein Verfahren zur Erhöhung der Ladekapazität einer elektrochemischen Zelle (1), die mindestens eine erste Aktivelektrode (2), vorzugsweise eine Anode, und mindestens eine zweite Aktivelektrode (3), vorzugsweise eine Kathode, und mindestens einen Separator (4) und eine Anzahl an Sensoren (5), vorzugsweise magnetoresistiven Sensoren und mit den S...
Patent
Full-text available
]Bei einem Verfahren zum Kühlen eines elektrochemischen Energiespeichers (1) fließt eine erste, magnetische Kühlflüssigkeit in einem Primärkreislauf wenigstens zeitweise durch ein erstes Magnetfeld (5) und wenigstens zeitweise durch den elektrochemischen Energiespeicher.
Patent
Full-text available
A profile strip to border an electrochemical energy storage device having at least one. essentially, longitudinally extending first recess, which is bordered by a first arm and a second arm. The first and the second arm are made Such that they are attachable to opposite sides of an boundary area of the electrochemical energy storage device, and at...
Patent
Full-text available
The present invention relates to a battery system, in particular for a motor vehicle, comprising at least one battery. To improve the electrical efficiency it is disclosed, that at least one absorption cooling device is included, which provides a useable controlled cooling for the cooling of at least one battery.
Patent
Full-text available
Battery module (1), comprising an electric cell (6), a module housing (2) which receives the electric cell (6), two or more, in particular four or six contacting units (4) which are attached to the module housing (2), wherein each of the contacting units (4) has at least two connections (5).
Patent
Full-text available
The present invention relates to an accumulator with extended durability. The invention is described in relation to a lithium-ion-accumulator for Supplying a motor vehicle drive. However, it should be noted that the invention will also be applicable for batteries without lithium and/or indepen dent from motor vehicles.
Patent
Full-text available
The invention relates to a battery (1) comprising at least one, in particular several battery cells (2), especially square battery cells. The battery cells (2) are accommodated in a battery housing (5) and at least one heat exchanger unit (3) is located inside the battery housing.
Patent
Full-text available
The invention relates to a battery receiving device comprising a battery receiving chamber and a wall at least partially enclosing the battery receiving chamber. The battery receiv ing device further comprises a closable first opening associ ated with the wall. The battery receiving device further com prises a battery holding device provided for ho...
Patent
Full-text available
To supply energy to motorised vehicles, aheat engine (SM) is provided to convertheat (106, 107, 108, 114) that accumulates in the vehicle at least partly into kinetic energy of the vehicle and to feed other portions of said lost heat to a heat accumulator (LWS). An optional, mechanical energy accumulator (MES) can take up kinetic energy from a vehi...
Patent
Full-text available
The invention relates to a contacting element (1) for electrically connecting a contact connection (18) of an electric cell, in particular a battery cell (22), comprising at least one deformation section (2) and at least two clamping edges (9) which are each Supported at opposing end sections (4) of the at least one deformation section (2).
Patent
Full-text available
The invention relates to a method for charging at least one motor vehicle battery (3) during the operation of the motor vehicle (1). According to the invention, the charging current for the motor vehicle battery (3) is obtained at least partially by converting mechanical power on the vehicle suspension (5a, 5b). The invention further relates to a c...
Patent
Full-text available
The invention relates to a battery system comprising at least one battery. According to the invention, provisions are made that said battery system comprises at least one Peltier element, which is used for cooling and/or for heating at least one battery.
Patent
Full-text available
The method involves partially surrounding an electrochemical energy storage cell (3) by a sealing compound (1). A contact element (5) is formed from an electrically conductive material and attached to a current collector (4) of the electrochemical energy storage cell to form an energy storage unit (10). The energy storage unit is immersed into a ve...
Patent
Full-text available
]Eine Elektroenergieeinheit weist eine Mehrzahl von Elektroenergiezellen auf, die in einer Stapelrichtung zu einem Zellblock gestapelt und innerhalb des Zellblocks parallel und/oder in Reihe miteinander verschaltet sind, wobei die Elektroenergiezellen flächig ausgebildete Ableiter aufweisen, die zueinander im Wesentlichen flächenparallel von der Ze...
Patent
Full-text available
Profilleiste (1) zur Berandung einer elektrochemischen Energiespeichereinrichtung (2), wobei diese Profilleiste wenigstens eine im Wesentlichen in Längsrichtung verlaufenden erste Schlitzung (4) aufweist. Diese erste Schlitzung (4) wird von einem ersten Schenkel (5) und einem zweiten Schenkel (6) begrenzt. Dieser erste und dieser zweite Schenkel (5...
Patent
Full-text available
]Die Erfindung betrifft ein Verfahren zur Partikelerzeugung, bei dem in einer ersten Stufe ein Gasstrom bereitgestellt wird, bei dem in einer in Strömungsrichtung gesehen nachfolgenden zweiten Stufe der Gasstrom von Unterschall- auf Überschallgeschwindigkeit beschleunigt wird, bei dem dem Gasstrom spätestens in der zweiten Stufe mindestens ein Prek...
Chapter
Full-text available
Schaut man durch die Brille der DFG auf das DLR, sieht man ein Beispiel von guter Zusammenarbeit zwischen zwei unter schiedlichen Organisationen, die beide im Forschungssystem der Bundesrepublik wichtige und zentrale Funktionen aus üben.
Thesis
Full-text available
In der am Institut für Technische Thermodynamik und Kaltetechnik der Universität Karlsruhe vorhandenen Versuchsanlage zur Untersuchung der Verbrennung in u~erschallstrahlen wird ein heißer, paralleler Überschall-Luftstrahl erzeugt, indem Luft im Lichtbogen eines Plasmabrenners auf hohe Ruheenthalpie aufgeheizt wird und anschließend in ein[r Laval-D...
Chapter
Full-text available
393 An der Überschallverbrennung besteht Interesse wegen der möglichen An wendung in staustrahltriebwerken für den Bereich hoher Mach-Zahlen. Deshalb wurden Experimente durchgeführt, bei denen Brenngas transversal in heiße, parallele Luftstrahlen eingeblasen wurde unter Bedingungen, wie man sie in zukünftigen Überschallbrennkammern erwarten kann: D...

Questions

Question (1)
Question
The excel sheet allows to easily model the COVID19 data. So far, the national data for Germany is implemented, but the sheet can easily be adjusted for other national data. It also allows to check several scenarios such as the effect of intervention strategies.
Explanation:
Excel sheet:

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