Drying Facility Heat Storage for Lower Peak Power Demand
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Solution Overview
Problem
Existing drying facilities for vehicle bodies and battery electrode webs face high electrical power demands due to electrification, leading to increased network connection power and infrastructure costs, and fluctuating energy production complicates efficient energy use.
Innovation Solution
A treatment facility with a heat storage and heating system that stores and releases heat energy to reduce power demand, incorporating a heat storage and heating system that integrates a heat storage and heating facility with separate recirculated air modules, allowing for flexible electricity procurement and reduced electrical power requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If electrification of the heating process is implemented to reduce CO2 footprint, then environmental performance is improved, but electrical power requirement increases considerably
Solution Approach 1:
The heat storage units store thermal energy in advance during periods of low electrical power demand or low electricity prices, so that this pre-stored heat can be utilized during peak demand periods. This preliminary action allows the system to meet high heating demands without requiring proportionally high electrical power input at those moments, thus reducing the peak electrical power requirement while maintaining the electrified heating process for CO2 reduction.
Solution Approach 2:
The system changes the temporal distribution of electrical power consumption by using heat storage to decouple heat generation from heat delivery. Electrical heating elements operate at optimized power levels to charge the heat storage, and the stored thermal energy is then released when needed. This parameter change in the timing and distribution of energy conversion allows reduced peak power requirements while maintaining the same overall heating capacity.
2Loss of energy
If the drying facility is maintained at operating temperature during partial-load operation to avoid repeated heating, then energy efficiency is improved, but peak current consumption increases during start-up and load increases
Solution Approach 1:
The heat storage units are charged with thermal energy in advance during periods of low demand or low electricity prices, creating a thermal buffer that can be drawn upon during peak demand. This preliminary energy storage allows the system to meet sudden load increases or start-up requirements without requiring excessive peak current, while avoiding the need to maintain continuous high-temperature operation during partial-load periods.
Solution Approach 2:
The system changes the operational parameters by decoupling the heating elements from direct continuous operation. Instead of maintaining constant high temperature through continuous heating (which causes peak current issues), the system uses intermittent heating to charge storage units, then relies on stored thermal energy to maintain operating conditions. This parameter change in the heating regime reduces peak current consumption while preserving energy efficiency.
3Power
If thermal energy is buffered using heat storage units, then electrical power requirement is reduced, but device complexity increases
Solution Approach 1:
The heating system is segmented into multiple independent heating zones, each with its own heat storage units. This segmentation allows each zone to be optimized and controlled independently, reducing the peak power requirement for any single zone. The modular nature of segmented heat storage systems also makes them easier to implement and manage compared to a single large thermal storage system, thereby reducing overall device complexity while achieving power reduction goals.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system reduces electrical power requirements, optimizes energy use, and enhances flexibility by storing and releasing heat energy, thereby lowering network connection power and infrastructure costs while adapting to fluctuating energy production.
Implementation Method 1
a heat storage and heating system that stores and releases heat energy
Implementation Method 2
at least one heating gas guide system, which comprises at least one heating gas feed and at least one heating gas return
Data Source
AI summary
The present invention relates to a treatment facility (100) for treating workpieces and/or material webs (166), in particular to a drying facility (102) for vehicle bodies and/or battery electrode webs (168), comprising:a treatment space (106), which comprises a plurality of treatment space portions (108), which are each assigned to one of a plurality of separate recirculated air modules (110) of the treatment facility (100),a heat storage and heating facility (114) for storing and providing heat,at least one heating gas guide system (116), which comprises at least one heating gas feed (118) and at least one heating gas return (120).The present invention relates further to a method for treating workpieces and/or material webs (166), comprising:causing a plurality of gas streams, guided in separate circuits, to flow through a plurality of treatment space portions (108) of a treatment space (106) of a treatment facility (100); directly or indirectly heating the gas streams by means of a heating gas stream generated in a heat storage and heating facility (114) of the treatment facility (100).