Research Decompression Volume Increase Aerodynamic Car Gas Energy Conversion Rate Based On

Pneumatic car work through the air expanding which compressed to a certain pressure stored by tank to push the car forward is a non-polluting car. After previous study, a problem currently faced is the aerodynamic automobile gas energy utilization rate is not high. This paper is based on preliminary aerodynamic car model, proposing a feasible way to improve aerodynamic automobile gas energy utilization and making theoretical description of the method, then demonstrating the feasibility of this method, finally combining with software simulation model analysis, comparing the results of theoretical analysis and simulation results to evaluate and improve the method. The main contents are as follows:(1)Firstly, it propose to improve the pneumatic automobile energy efficiency, that is, to heat the gas as it flows and expands when the gas work. It compares the size of the work done during adiabatic expansion and isothermal expansion, to conclude whether it can absorb heat and how much it can affect the aerodynamic automobile gas energy utilization. It analyzes why heated gas is used to improve the energy efficiency of pneumatic automotive gas, which comprises the analysis of changes of the gas state at each stage, each position, such as pressure, temperature, etc. When obtained the utilization of the gas through heating, further to calculate the amount of heat needed for the various positions of the gas.(2)Secondly, it compares and analyzes different heat sources of heating to select suitable way of heating, heat storage to pneumatic automobile. Using the stored water which is heated by solar to heat the gas when the pneumatic automobile work, then according to the pneumatic car in a gas cycle to design solar collector heat panels, required water storage tanks and other structures as well.(3)Then, after analyzing the heating position of the car and the heat exchange calculation when offered heated water, it selects the type of heat exchanger, making thermal calculations, resistance calculation, designing a heat exchanger the structure. The design of the heat exchanger comprises tank heat exchanger design, the pipe heat exchanger design, volume decompression system heat exchanger. After the completion of the heat exchanger design, it makes aerodynamic car gas energy efficiency analysis, draws a conclusion that appropriate heat exchanger can increase the gas energy utilization rate to about70%.(4) Lastly, it use AMESim to simulate pneumatic automobile systems, after establishing the model, making the simulation under adiabatic state, isothermal state, no heat exchanger and have circumstance, contrasting states of those situation, such as gas temperature, gas pressure and gas cylinders end state. In the case of having heat transfer, depending on various coefficients of heat transfer to simulate, comparing simulation results and theoretical analysis, the results obtained are indeed consistent.