The Research Of The Emulation And Optimization About The Underground Building Heating Pump Air Conditioning (UBHPAC) System

In this paper, basing on the analysis of the utilization and development about the UBHPAC system, the research of the emulation and optimization of the UBHPAC System is put forward and realized in the subsystems and the whole system. In this way, the UBHPAC system can work stably and the energy consummation can be minimized as far as it can, while offering the foundation to the design and prognostication of the UBHPAC system. The main research methods and conclusions are as follows: Taking the Underground Building systems, the air-cooling heating pump and the environment as a whole system firstly, its mathematics model is established and emulated at the deferent working conditions. Through the emulation of the UBHPAC system, the parts of the system and their corresponding technology methods of the energy saving and optimization can be researched.In the heat transfer dynamic emulation of the UBHPAC system envelope, the method of boundary element and dynamic programming (BE&DP) is first used to study the instant differential system, with equal or unequal restrictions and linear or inlinear objective functions, which often met at the thermal or humid environment in the underground buildings. According to the traits of the thermal or humid diffusion which often met in the surroundings of the underground buildings, we develop and systematize the boundary element and dynamic programming, and make the programs of the multi-dimension, unstable thermal diffusion system, and achieve the control of the subsystems in the UBHPAC system. In the paper, we also used the method of boundary element and the method of lines to emulate dynamically the heat transfer in the envelope of the UBHPAC system.In this paper, the out door meteorological parameters model used in UBHPAC system dynamic emulation is established firstly. Considering the merits and shortages of the traditional "standard year method" and " random simulation method" and the velocityand reliability of the UBHPAC system dynamic emulation, the season random meteorological parameters model for the UBHPAC system is set up, and its traits are validated by the experiments.In this paper, the method of reverse is also used to get the material thermal parameters of the underground building envelope. I.e. by the temperature and the massage of the thermal current from the experiment point, the material thermal parameters are extracted with the method of reverse. Analyzing its reliability of measure errors, quantity of measure points, position and length of measure step and so on, the method of technology was put forward, in order that it can be used effectively to determine the material thermal parameters of the building envelope.The UBHPAC unit emulation model, which emulates the traits of the main facility such as the compressor, heat transfer (air cooling condenser and evaporator), throttle and the assistant facility, is found out. At the same time the UBHPAC unit emulation model about the underground buildings equipment such as: air cooling heating bump unit, temperature adjustable dehumidifier and air cooler is also set up. The analytical method of the energy consumption and energy saving is put forward firstly in this paper. Through the emulation of the system energy consumption, we can not only determine properly the facility's capability, but also forecast the system energy consumption, and analyze quantitatively the effect of the energy saving by the different transacting. So we can choose which way is in the optimization. By the system energy consumption emulation, we can make a quantitative analysis about the quantity of the UBHPAC system energy consumption and the effects of the impressing factors.