AMMONIA-WATER ABSORPTION CYCLE FOR TRANSPORTATION OF LOW-GRADE THERMAL ENERGY OVER LONG DISTANCE

Qiang Ma (1) , Lingai Luo (2) , Ruzhu Wang (1)

1 Institute of Refrigeration and Cryogenics
2 LOCIE - LabOratoire proCédés énergIe bâtimEnt

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 1200C is available, the user site can get hot water output at about 550C with the thermal COP of about 0.6 and the electric COP of about 100 in winter, and cold water output at about 80C 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.

Domaines: Sciences de l'environnement

Qiang Ma, Lingai Luo, Ruzhu Wang. AMMONIA-WATER ABSORPTION CYCLE FOR TRANSPORTATION OF LOW-GRADE THERMAL ENERGY OVER LONG DISTANCE. Inaugural US-EU-China Thermophysics Conference, May 2009, Beijing, China. ⟨hal-00452764⟩