Experiment Research On Performance For Independent Engine-Driven Heat Pump System And Control

Including engine subsystem, heat pump subsystem, generating subsystem, terminal energy use subsystem and intelligence control system, independent engine-driven heat pump (IEHP) is a new development of engine-driven heat pump (GEHP). With the only one input energy - natural gas, IEHP can realize cold, heat, hot water and electricity which is enough to itself to users. The main contents are summarized as follows:(1)The (independent) engine-driven heat pump air-conditioning system with waste heat utilized was proposed, which includes core (independent) engine-driven heat pump, primary heat interchanger, second heat interchangers and fans, pumps. Some mathematical models, such as the room wall heat transfer model, the engine-driven heat pump model, the heat interchanger model, the air conditioning model, was established. The performance and the energy conservation characteristic for the GEHP/IEHP with waste heat utilized. The results show that (independent) engine-driven heat pump air-conditioning system with waste heat utilized can save energy.(2)In view of the control characteristic for the engine heat pump speed, the electronic expansion valve and the system water leakage temperature the neural network non-linear PID control method, the multi-objective union control method and the non-linear forecast control method was proposed. The simulation research and the experimental study indicate these methods can effectively control system. The results indicate that the structure for control method is simple, the control system works stablely, its robust is strong, various parameters physics significance is clear and it is easy to realize in the project, and also has the parallel structure and the essence studies ability. It has memory function and can approach arbitrary function, so it has widespread auto-adapted under the different operating mode.(3)For the complexity for intelligence control of IEHP which includes control algorithm and control strategy, the graduation hierarchical intelligence control strategy was used in the system to organically organize the control software and hardware to form one multi-purpose intelligence control system. This control strategy also was for the first time in this domain application. The experiment proved that this intelligence control system can control this system effectively.(4) The IEHP prototype was built and some experiments for the system performance and the overall performance, each control method effect and the overall control effect experiment had been carried on. The experimentals show the system is a green highly effective energy use system without commercial power and the intelligence control system can highly effectively, tenderly stablely and safely, controls the system.