Study Of Distributed Energy Systems Based On Offline Heat Transportation System

Recently，China has experienced rapidly economic development, but due to thelong-term structural problems and the extensive growth pattern, huge environmentalcost was paid at the same time. Until2008, China has become the biggest CO2emissions superpower.Distributed energy systems (DES) are established on the basis of the concept ofenergy cascade utilization, which were distributed in small scales in the demand side.DES output secondary energy like cold, heat, electricity. Because of the temperatureof energy supply oral confession, the energy efficiency was also maximized. Thispaper introduces the concept, composition, basic principle of DES, and solutions withdifferent power equipment. Considering the low efficiency of industrial waste heatrecovery in China, DES on the basis of offline heat transportation system areintroduced. After a brief introduction of principles and solutions of the system, abottom-up model is established. A community in Benxi was chosen as a case study.On base of the analysis of energy consumption, a simulation results of primary energyconsumption and CO2emissions was get with the method of scenario analysis.According to the simulation results, the introduction of DES based on offline heattransportation system is the best option from both economic and environmentalviewpoints, which brings the primary energy consumption and CO2emissionreduction up to67%and31%, respectively below current level.