RV Heat Transfer Loop Design for Waste Heat Recovery and Reuse
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Solution Overview
Problem
Recreational vehicles (RVs) face inefficiencies in thermal management, leading to wasted heat and increased energy consumption, which affects the performance and lifespan of electric propulsion systems and components.
Innovation Solution
A thermal management system that utilizes heat transfer loops to efficiently transfer thermal energy from sources like batteries and electric motors to heat sinks such as water heaters and space heaters, while also employing a heat pump for temperature regulation, thereby minimizing waste heat and optimizing energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If thermal energy from heat sources is not recovered and reused, then energy is wasted and additional power sources are required, but implementing a thermal management system increases device complexity
Solution Approach 1:
The patent converts waste heat from batteries and electric motors into useful thermal energy for heating applications. The thermal management system captures heat that would otherwise be discarded and redirects it to heat sinks such as water heaters and space heaters, transforming a harmful byproduct into a beneficial resource.
Solution Approach 2:
The thermal management system performs multiple functions simultaneously: it cools heat sources (batteries and motors) while also heating heat sinks (water heater, space heater, oven, holding tank, clothes dryer). This multi-functionality allows a single system to address both cooling and heating needs across multiple components.
2Use of energy by moving object
If thermal management system is implemented to transfer thermal energy between multiple heat sources and heat sinks, then thermal efficiency is improved, but device complexity increases
Solution Approach 1:
The thermal management system is divided into separate heat transfer loops, with each loop dedicated to transferring thermal energy between specific heat sources and heat sinks. This segmentation allows for modular design and independent control of different thermal pathways within the RV.
Solution Approach 2:
Heat exchangers serve as intermediary components that facilitate thermal energy transfer between different heat transfer loops. These intermediaries enable efficient heat exchange between loops without requiring direct thermal contact between all components, simplifying the overall system architecture.
3Use of energy by stationary object
If heat transfer loops are used to transfer thermal energy, then energy consumption is reduced, but the system requires additional components increasing device complexity
Solution Approach 1:
The thermal management system utilizes the waste heat generated by the RV's own components (batteries and electric motors) to provide heating services. This self-service approach allows the system to reduce overall energy consumption by internally recycling thermal energy rather than requiring external energy inputs for heating.
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
This system enhances the thermal efficiency of RVs by reusing thermal energy, reducing the size and weight of power sources, and extending the life of components, while minimizing costs and environmental impact.
Implementation Method 1
transfer thermal energy from the first heat source to at least one of the first and second heat sinks
Implementation Method 2
heat transfer medium from at least one of the first and second heat sinks to at least one of the first and second heat sources
Implementation Method 3
a heat exchanger thermally couples the first heat transfer loop and the second heat transfer loop
Implementation Method 4
a third heat transfer loop is configured for heat exchange with the first heat transfer loop. Optionally, the third heat transfer loop is a heat pump
Data Source
AI summary
A recreational vehicle includes a first heat source, a second heat source, a first heat sink, and a second heat sink. At least one heat transfer loop is configured to transfer thermal energy from the first heat source to at least one of the first and second heat sinks and is further configured to transfer thermal energy from the second heat source to at least one of the first and second heat sinks.