Device for transferring heat from a gaseous working medium
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Solution Overview
Problem
Conventional heat pumps face challenges in achieving a compact design with high efficiency due to the limitations imposed by higher working pressures, which require stronger materials and more space.
Innovation Solution
The device incorporates a working line with a heat exchanger line connected for pressure compensation, allowing for continuous pressure balance between the two lines. This design enables efficient heat transfer with thinner walls, accommodating a wide range of pressures and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If higher operating pressure is used to improve heat pump efficiency, then efficiency is improved, but material strength requirements and space requirements increase
Solution Approach 1:
The patent changes the pressure parameter by introducing a pressure equalization line that maintains equal pressure on both sides of the working line walls. This allows the system to operate at high pressures (improving efficiency) while the walls experience minimal pressure differential, reducing the strength requirements for materials
Solution Approach 2:
The pressure equalization line acts as an intermediary element that balances the pressure between the working medium and the external environment. By introducing this intermediate pressure balance mechanism, the system can achieve high operating pressure without requiring proportionally stronger materials
2Loss of energy
If higher operating pressure is used to improve heat pump efficiency, then efficiency is improved, but device volume increases
Solution Approach 1:
The patent changes the pressure parameter operationally by dynamically balancing pressure through the equalization line, enabling high-pressure operation that improves efficiency while avoiding the volume penalty that would normally accompany high-pressure system design
3Strength
If wall thickness is increased to withstand higher pressures, then strength is improved, but heat transfer efficiency decreases
Solution Approach 1:
The patent changes the pressure differential parameter across the wall by introducing the pressure equalization line. This allows the wall to be thin (maintaining heat transfer efficiency) while the system operates at high pressure (maintaining strength through equalized external pressure)
Solution Approach 2:
The pressure equalization line serves as an intermediary that provides external pressure support to the working line walls. This intermediary pressure balance enables thin-walled construction that maintains both structural integrity at high pressure and optimal heat transfer characteristics
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 solution enables a compact design with high efficiency, allowing for pressures between 6 bar and 1000 bar, and achieving COP values of 5 to 8, suitable for use in building and vehicle heat pumps.
Implementation Method 1
The first section is configured to receive pressure changes from a pressure transmission medium and to transmit the pressure changes to the gaseous working medium
Implementation Method 2
heat is transferred to a heat exchanger medium by means of compression of a working fluid
Implementation Method 3
a heat exchange medium gap connected in parallel with the channel is formed between the outer wall of the working line and the shell wall of the heat exchanger line
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a device (1) for transferring heat from a gaseous working medium (M2) to a heat exchange medium (M3) by compressing the gaseous working medium (M2), wherein the device (1) comprises the following: a working line (AL), the volume (V) enclosed by the working line (AL) being divided into at least two portions, specifically a first portion (AL-V1) and a second portion (AL-V2), the first portion (AL-V1) being designed to receive a pressure transfer medium (M1) and the second portion (AL-V2) being designed to receive and discharge the gaseous working medium (M2), at least one inlet and outlet valve (2) being provided to receive and discharge the gaseous working medium (M2), a first volume defined by the first portion (AL-V1) being separated from a second volume defined by the second portion (AL-V2) by means of a first separating layer (T12) which can move in the working line (AL), the first separating layer (T12) being arranged such that pressure differences between the first portion (AL-V1) and the second portion (AL-V2) of the working line (AL) are compensated for by a movement of the first separating layer (T12) in the working line (AL) and an associated change of the size ratio between the first volume and the second volume; and a heat exchange line (WL) for receiving the heat exchange medium (M3), the heat exchange line (WL) being coupled to the first portion (AL-V1) of the working line (AL) in order to bring about pressure equalisation.