| Improving efficiency in the use of air conditioning will help to improve the economy ofthe Depth Hybrid Power Vehicle.However, the proportion of the Depth of hybrid’s engineoperation is less than60%, it makes the car could not get enough heat from the engine forheating. So the Depth Hybrid Power Vehicle can not follow the air-conditioning system ofthe traditional fuel car to cool and heat. There are some common solutions: Installing thePTC to heat the passenger compartment,Using the thermal energy storage to heat thepassenger compartment,or installing the fuel heater type,or installing the heat-pump heatingand so on.The common method in market is to install the PTC.This paper presents the Heat Pumpair conditioning system that it is more economic than the PTC. So the author choose thePrius3which depth hybrid car has installed the PTC. The author has tested the energyconsumption of the depth hybrid car and heating system,it also tests the fever cases of theelectric motor and the battery, and the impact about the process of the depth hybrid car’smode. On this basis, The author simulates that replacing the PTC by the Heat Pump heatingin the depth hybrid car, to calculate the heating energy consumption of the new heatingsystem with the original car at different ambient temperatures, and use it to compared theeconomy of two heating system.Due to the use of the Depth Hybrid Power Vehicle air conditioning system by theimpact of battery capacity, The author also compared the depth hybrid car which use5.2kWh,8kWh,11.58kWh and18kWh battery, when the car has traveled30kilometers in the speed of40km/h. The comparison shows that the engine running time gradually decreased,whenelectricity storage has increased. It makes the economy of PTC heating system and heat pumpheating system depth hybrid cars increase. However, The heat pump heating system is moreenergy efficient than the PTC heating system, so making the running time of the engine in theheat pump heating system Depth Hybrid Power Vehicle shorter than PTC heating system’sengine, Because of the price of oil costs far more than the price of electricity high, so there isa battery capacity which is the selection of the battery capacity in heat pump heating systemscan get maximum economy. Thereafter, both economical and tends will decrease when withfurther reduction of the engine operation time.However, because this design of the heat pump system also recovered to the heat of thebattery, and the battery charge amount increases as the heat increases, so the COP of the heat pump system will increase when the battery increases recoverable heat, the heat pump heatingsystem’s economy will increases.The economy of depth of hybrid car is impacted not only on the the travel mileage butalso on the storage capacity of battery. By comparing the air conditioning energyconsumption and the vehicle fuel consumption in different of the battery capacity (5.2kWh,8kWh,11.58kWh and18kWh) in the40km/h speed and30km distance, we find that theeconomic difference about the PTC and the Heat Pump reaches a peak in a specified mileage.After it, the ratio between the economy is decreased gradually. When the cooling load is lessthan the recyclable heat of the battery, The Heat Pump began to economy than the PTC.By comparing the economy of different circumstances，we can find that it is moreeconomic to use the Heat Pump to instead the PTC in the Depth Hybrid Power Vehicle’sheating when the environmental temperature lower than18℃... |
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