Heat pump arrangement having a controllable heat exchanger and method for producing a heat pump arrangement
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Solution Overview
Problem
Conventional heat pump configurations are inefficient due to the lack of adaptability to varying outdoor temperatures, leading to uneven temperature distribution and excessive energy consumption, as they are typically designed for worst-case scenarios rather than average conditions.
Innovation Solution
A heat pump arrangement with a controllable heat exchanger that thermally couples the evaporator and condenser cycles without direct fluidic coupling, allowing for flexible operation and reduced pressure differences, enabling efficient use of temperature differences and improving partial load behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the heat pump is configured for worst-case high outdoor temperatures, then cooling capacity is sufficient for extreme conditions, but energy consumption increases and efficiency decreases during normal operation
Solution Approach 1:
The heat exchanger is made dynamically controllable through integration with a heat pump device that can adjust its operating parameters based on actual outdoor temperature conditions. The system transitions from a static, fixed-capacity design to a dynamic system that adapts its cooling capacity to match real-time thermal demands, thereby maintaining reliability while optimizing energy consumption during normal operation
Solution Approach 2:
The system changes its operational parameters by utilizing controllable heat exchangers that can modify heat transfer characteristics based on outdoor temperature. By adjusting heat exchanger effectiveness and operating modes, the system maintains sufficient cooling capacity for worst-case scenarios while operating more efficiently under typical temperature conditions
2Device complexity
If direct fluidic coupling between evaporator and condenser cycles is implemented, then system complexity is reduced, but pressure differences cause fluidic short circuits and efficiency loss
Solution Approach 1:
A controllable heat exchanger is introduced as an intermediary thermal coupling device between the evaporator and condenser cycles. This mediator enables heat transfer between the two cycles while maintaining fluidic separation, preventing direct short circuits of the refrigerant flows. The heat exchanger acts as a controlled interface that allows thermal interaction without compromising the pressure differences necessary for efficient heat pump operation
Solution Approach 2:
The system is segmented into distinct fluidic circuits (evaporator cycle and condenser cycle) that are thermally coupled but fluidically separated. This segmentation prevents mixing of refrigerants and maintains independent pressure control in each cycle, eliminating fluidic short circuits while still achieving the desired thermal coupling effect
3Device complexity
If conventional heat pump configuration is used, then结构简单 (structure is simple), but temperature distribution becomes uneven and adaptability to varying outdoor temperatures is poor
Solution Approach 1:
The heat exchanger configuration is made dynamic and controllable, allowing the system to adapt its thermal coupling characteristics in response to varying outdoor temperatures. This enables the heat pump to optimize its operation across different temperature ranges, improving adaptability while maintaining reasonable structural complexity through integrated control mechanisms
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 enhances the flexibility and efficiency of heat pump systems by allowing thermal coupling without fluidic short circuits, reducing energy consumption and improving temperature uniformity across varying outdoor conditions, and enabling efficient operation in both free cooling and partial load scenarios.
Implementation Method 1
a controllable heat exchanger for controllably coupling the evaporator cycle interface and the condenser cycle interface
Data Source
AI summary
A heat pump arrangement includes a heat pump device, an evaporator cycle interface for inputting liquid to be cooled into the heat pump device and for outputting cooled liquid out of the heat pump device, a condenser cycle interface for inputting liquid to be heated into the heat pump device and for outputting heated liquid out of the heat pump device, a controllable heat exchanger for controllably coupling the evaporator cycle interface and the condenser cycle interface, and a control for controlling the controllable heat exchanger in dependence on an evaporator cycle temperature in the evaporator cycle interface or a condenser cycle temperature in the condenser cycle interface.