Adsorption Heat Pump Cooling Using Cascaded Desorption Energy
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Solution Overview
Problem
Existing adsorption heat pump systems do not efficiently utilize desorption energy for cooling generation, limiting their effectiveness in cooling production.
Innovation Solution
An adsorption heat pump system comprising an evaporator, a first adsorption device that adsorbs and regenerates the adsorbate, and a second adsorption device that further adsorbs the desorbed adsorbate from the first device, utilizing desorption energy for additional cooling generation, with the option of using water or ammonia as adsorbates and configuring the adsorbents to ensure efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If desorption energy is not utilized for cooling generation, then the system structure is simpler, but cooling efficiency is reduced
Solution Approach 1:
The patent combines the desorption process and cooling generation process into a single integrated operation. The desorption of adsorbate from the first adsorption device provides both the regeneration function and the cooling function simultaneously, merging two functions into one process to improve cooling efficiency without proportionally increasing system complexity
Solution Approach 2:
The desorption energy is given multiple uses: it serves both to regenerate the adsorbent in the first adsorption device and to generate cooling in the second adsorption device. This multi-functional use of desorption energy maximizes the utility of the input energy and improves overall system productivity
2Productivity
If a second adsorption device is added to utilize desorption energy, then cooling generation is enhanced, but device complexity increases
Solution Approach 1:
The second adsorption device continuously utilizes the desorption energy as it is generated from the first adsorption device, maintaining a continuous cooling generation process. This ensures that the cooling output is sustained without interruption and maximizes the productivity benefit of adding the second device
Solution Approach 2:
The desorbed adsorbate acts as an intermediary carrier that transfers energy from the first adsorption device to the second adsorption device. This intermediary mechanism enables the coupling between the two devices and facilitates the transfer of useful energy for cooling generation
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 achieves efficient cooling generation by utilizing desorption energy during the regeneration of the first adsorption device, enhancing cooling output compared to configurations that do not employ desorption energy, while maintaining a cost-effective setup using versatile adsorbates like water or ammonia.
Implementation Method 1
an evaporator that evaporates an adsorbate
Implementation Method 2
cooling is generated in the evaporator
Implementation Method 3
a first adsorption device that adsorbs the adsorbate of the evaporator and generates cooling in the evaporator
Implementation Method 4
a second adsorption device that adsorbs the adsorbate that was adsorbed by the first adsorption device and generates cooling in the first adsorption device
Implementation Method 5
Adsorbate that was adsorbed by the first adsorption device is adsorbed by the second adsorption device. Namely, pressure in the first adsorption device drops. The adsorbate in the first adsorption device evaporates, and a portion of the adsorbent of the first adsorption device is regenerated
Data Source
AI summary
An adsorption heat pump system comprises an evaporator that evaporates an adsorbate; a first adsorption device that adsorbs the adsorbate of the evaporator and generates cooling in the evaporator; and a second adsorption device that adsorbs the adsorbate that was adsorbed by the first adsorption device and generates cooling in the first adsorption device.