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Transportation of low-grade thermal energy over long distance by ammonia-water absorption
Ist Teil von
Chinese science bulletin, 2009-03, Vol.54 (6), p.948-957
Ort / Verlag
Heidelberg: SP Science in China Press
Erscheinungsjahr
2009
Link zum Volltext
Beschreibungen/Notizen
This paper presents the importance and the cycle choice for long-distance transportation of low-grade thermal energy, and the thermodynamic and hydrodynamic feasibility of single-effect ammonia-water absorption system for heat or cold transportation over long distance are also involved. A model of a long-distance thermal energy transportation system is built and analyzed, which shows satisfactory and attractive results. When a steam heat source at 120℃ is available, the user site can get hot water output at about 55℃ with the thermal COP of about 0.6 and the electric COP of about 100 in winter, and cold water output at about 10℃ 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 pro- spective solution for the heat or cold transportation over long distance.