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Next Generation Car: Coupled Thermochemical Reactions for Preheating Vehicle Components

Dieterich, Mila and Bürger, Inga and Linder, Marc Philipp (2017) Next Generation Car: Coupled Thermochemical Reactions for Preheating Vehicle Components. EVS30, September 2017, Stuttgart, Deutschland.

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The German Aerospace Center has merged a wide range of technological research and development for future cars in a project called “Next Generation Car”. Within this project, thermal energy storage for improving the efficiency in future vehicles is investigated. This work focuses on thermochemical energy storage able to produce heat even at low ambient temperatures (-20 … +20°C). This heat can be used to preheat the battery for higher electrical power and less degradation. Based on the absorption and desorption of hydrogen between two metal hydrides, the storage is able to produce heat from ambient temperature. Although metal hydrides can react fast even at low temperatures, no experimental data of coupled metal hydride reactions below freezing point and at relevant scale is available in literature. For the development of thermochemical energy storages in future vehicle concepts with high thermal output powers, experimental investigations regarding the main influence factors are needed. Therefore, an experimental test rig of coupled metal hydrides was built and tested at vehicle boundary conditions. Charging by low level thermal energy (130°C), the results showed high thermal power outputs even at low discharging ambient temperatures. The variation of the ambient temperature showed a significant influence on the thermal power. The values ranged from 0.6 kW/kgMH at -20°C up to 1.6 kW/kgMH at +20°C. These are the highest values reported in literature so far.

Item URL in elib:https://elib.dlr.de/115319/
Document Type:Conference or Workshop Item (Poster, Other)
Title:Next Generation Car: Coupled Thermochemical Reactions for Preheating Vehicle Components
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:demonstration, energy, energy storage, hydrogen, power density, research, thermal management
Event Title:EVS30
Event Location:Stuttgart, Deutschland
Event Type:international Conference
Event Dates:September 2017
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC-Energiemanagement (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Dieterich, Mila
Deposited On:01 Dec 2017 13:05
Last Modified:15 Jan 2018 12:05

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