Markus Lehner – författare

Increased production of energy from renewable sources leads to a need for both new and enhanced capacities for energy transmission and intermediate storage. The book first compares different available storage options and then introduces the power-to-gas concept in a comprehensive overview of the technology. The state of the art, advancements, and future requirements for both water electrolysis and methanation are described. The integration of renewable hydrogen and methane into the gas grid is discussed in terms of the necessary technological measures to be taken. Because the power-to-gas system is very flexible, providing numerous specific applications for different targets within the energy sector, possible business models are presented on the basis of various process chains taking into account different plant scales and operating scenarios. The influence of the scale and the type of the integration of the technology into the existing energy network is highlighted with an emphasis on economic consequences. Finally, legal aspects of the operation and integration of the power-to-gas system are discussed.

This book provides a compilation of important optical techniques applied to experiments in heat and mass transfer, multiphase flow and combustion. The emphasis of this book is on the application of these techniques to various engineering problems. The contributions are aiming to provide practicing engineers, both in industry and research, with the recent state of science in the application of advanced optical measurements. The book is written by selected specialists representing leading experts in this field who present new information for the possibilities of these techniques and give stimulation of new ideas for their application.

In fast jeder Kuche der Welt findet sich eine Erfindung, die den Alltag revolutioniert hat: die Antihaftpfanne. Doch die chemische Bequemlichkeit, die das Spiegelei widerstandslos gleiten lasst, birgt ein unsichtbares Risiko. Wenn diese Pfannen auf uber 260 Grad Celsius erhitzt werden, zersetzt sich die Beschichtung und setzt toxische Gase frei, die das sogenannte "e;Polymerfieber"e; (Teflon Flu) auslosen. Dieses investigative Sachbuch deckt die beunruhigende Mechanik und Geschichte der Ewigkeitschemikalien (PFAS) auf. Es dokumentiert, wie das Militar und Konzerne wie DuPont eine Substanz in unseren Haushalt brachten, die der menschliche Korper nicht abbauen kann. Der Text erklart prazise, warum ein Kanarienvogel sofort tot von der Stange fallt, wenn eine leere Teflonpfanne auf dem Herd vergessen wird, wahrend beim Menschen grippeahnliche Symptome oft fehldiagnostiziert werden. Neben der chemischen Aufklarung liefert das Buch konkrete, pragmatische Losungen fur einen giftfreien Haushalt. Es zeigt Alternativen wie Gusseisen und Karbonstahl, die bei richtiger Handhabung eine naturliche Antihaftwirkung aufbauen. Verbannen Sie die giftige Bequemlichkeit aus Ihrer Kuche. Verstehen Sie die chemischen Prozesse, die Sie bei jedem Bratvorgang einatmen, und schutzen Sie Ihre Gesundheit langfristig.

This book provides a compilation of important optical techniques applied to experiments in heat and mass transfer, multiphase flow and combustion. The emphasis of this book is on the application of these techniques to various engineering problems. The contributions are aiming to provide practicing engineers, both in industry and research, with the recent state of science in the application of advanced optical measurements. The book is written by selected specialists representing leading experts in this field who present new information for the possibilities of these techniques and give stimulation of new ideas for their application.