Ammonia-Water Absorption Cycle for Transportation of Low-Grade Thermal Energy over Long Distance


This paper presents the thermodynamic and hydrodynamic feasibility of the application of the ammonia-water absorption system for transportation of low-grade thermal energy over long distance. A model is built and analyzed, and it shows satisfactory and attractive results. When a steam heat source at the temperature of 120°C is available, the user site can get hot water output at about 55°C with the thermal COP of about 0.6 and the electric COP of about 100 in winter, and cold water output at about 8°C with the thermal COP of about 0.5 and the electric COP of 50 in summer. A small-size prototype is built to verify the performance analysis. Basically the experimental data show good accordance with the analysis results. The ammonia-water absorption system is a potential prospective solution to utilize the waste heat which locates far away.

  • Abstract
  • Introduction
  • 1. Working Principle of the System and the Modeling Description
  • 2. Analysis Results and Discussion
  • 3. Experimental Design and Results
  • 4. Conclusion
  • Acknowledgments
  • References

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