Hydrodynamic Heater Heat Exchanger for Faster Cabin Warm-Up
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Solution Overview
Problem
Conventional automotive heating systems using engine cooling fluid as a heat source experience delays in achieving desired temperatures, especially in cold conditions, and may not provide sufficient heat under low load conditions or very cold ambient temperatures.
Innovation Solution
A supplemental heating system incorporating a hydrodynamic heater with a heat exchanger and a manifold for controlling fluid distribution, where a rotor-driven hydrodynamic chamber enhances heat transfer, and a control valve manages pressure to optimize heat output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If engine cooling fluid is used as a heat source for the heating system, then the heating system can utilize waste heat from the engine, but there is a significant delay in achieving desired air temperature when the engine is first started or operating in cold conditions
Solution Approach 1:
The system divides the heating function into two independent parts: a primary heat exchanger using engine cooling fluid and a supplemental hydrodynamic heater. This segmentation allows each component to operate independently, so the supplemental heater can provide immediate heat without waiting for the engine cooling fluid to warm up, thus resolving the time delay while still utilizing waste heat when available.
Solution Approach 2:
The hydrodynamic heater acts as an intermediary heat source between the engine and the heating system. It provides supplemental heat during the warm-up period when engine cooling fluid is insufficient, bridging the temperature gap until the primary heat source becomes effective, thereby eliminating the delay in achieving desired cabin temperature.
2Temperature
If the vehicle operates in very cold ambient conditions or low load conditions, then the engine cooling fluid temperature remains low, but the heating system requires sufficient heat to achieve desired air temperature
Solution Approach 1:
The system merges two heat sources into a unified heating system: the primary heat exchanger utilizing engine cooling fluid and the supplemental hydrodynamic heater. This combination ensures that under any operating condition—whether the engine is warm or cold, high load or low load—the heating system has sufficient heat capacity to maintain reliable performance, as one source compensates when the other is insufficient.
Solution Approach 2:
The system dynamically adjusts the contribution of each heat source based on operating parameters. When ambient temperature is very low or engine load is low (resulting in low cooling fluid temperature), the supplemental heater activates to increase heat input. This parameter-based control ensures consistent heating reliability across all operating conditions.
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 solution reduces the time to achieve desired air temperatures and ensures consistent heating performance even under low load conditions or cold ambient temperatures by efficiently transferring heat from the hydrodynamic heater to the heat exchanger.
Implementation Method 1
a rotor-driven hydrodynamic chamber enhances heat transfer
Implementation Method 2
efficiently transferring heat from the hydrodynamic heater to the heat exchanger
Implementation Method 3
The heating system includes a heat exchanger fluidly connected to the vehicle's engine cooling system. Warm cooling fluid from the engine cooling system passes through the heat exchanger where it gives up heat to a cool air supply flowing through the heating system.
Implementation Method 4
a control valve manages pressure to optimize heat output
Data Source
AI summary
Disclosed herein is an exemplary supplemental heating system including a hydrodynamic heater and a heat exchanger. The hydrodynamic heater includes a hydrodynamic chamber disposed within an interior cavity of the hydrodynamic heater. The hydrodynamic chamber is operable for selectively heating a fluid present within the hydrodynamic chamber when the heating apparatus is connected to a fluid supply source. The hydrodynamic heater includes an inlet port fluidly connected to a discharge port of the heat exchanger, and a discharge port fluidly connected to an inlet port of the heat exchanger. The heat exchanger includes a heat exchanger core disposed within an interior cavity of the heat exchanger. A wall at least partially defines the interior cavity of the hydrodynamic heater and the interior cavity of the heat exchanger.