Research And Evaluation Analysis On Energy Supply Systems Of Parks

With the rapid development of China’s economy and improvement ofpeople’s life quality, China’s demand for energy is increasing, which causespressure on the balance of energy supply. And during the rough developmentprocess, China’s energy efficiency is quite low and it really makesdestruction on resources and environment. So, looking for ways to useenergy more efficiently is a necessity to solve the contradictio. In this thesis,to find the methods and paths to improve energy efficiency, we choose thepark as energy-user and do research on characteristics of energy systems.In this thesis, the park is used as an energy-user and research isconducted from perspectives of thermodynamics, energy, emission andeconomic to find ways of improving energy efficiency. Specific contents andconclusions are as follows.First, introduce energy supply systems and models of parks. Theconventional energy supply system and CCHP systems to findcharacteristics of the basic energy supply systems are studied. And then, inorder to make a correct evaluation on systems, a reasonable mathematicalmodel on CCHP systems is set up. In this way, the optimization objectivefunctions and constraints can be given so that we can implemente theoptimization of each specific user. Besides that, factors influenced onenvironmental characteristic are discussed and the relationships amongreduction rate, efficiency of power generation and power ratio are found.Second, make researches on new CCHP systems. Based on theprinciple of “energy cascade utilization”, we try to add renewable energymodules and storage modules into a regular CCHP system. Then we discussand analysis the system’s characteristics and compare the different systems by calculating cases. In this part, softwares are used to do more specificresearch. At last, conclusions come out that: the new complementary CCHPsystems can save11.4percent operating costs compared with conventionalCCHP systems and save8.4percent compared with conventional energysupply systems; the gas tubine in CCHP systems with storage modules usesenergy28.3percent less than in the conventional energy supply systems and29.0percent less than in the conventional CCHP systems.Third, build an energy management center. On the purpose ofimproving energy management of parks, this thesis proposes an idea ofbuilding an energy management center and also gives the specific technicalroute.Through this research, useful guidance on system optimization andenergy management are meant to be given to various parks, therebyimproving energy efficiency of parks.