Trilateral cycle system
A temperature adjustment mechanism for a vehicle includes a battery-applied pump and circulation paths, and adjusts a temperature of a battery chargeable from an external power supply outside the vehicle to be within a predetermined temperature range. The temperature adjustment mechanism further includes a vacuum insulation tank in which either cold water generated by a cold energy source or hot water heated by a hot energy source is stored according to an ambient temperature during charging of the battery from the external power supply. At a time of input and output of electric power in the battery excluding a charge from the external power supply, the vacuum insulation tank is connected to the circulation paths, the cold water or the hot water stored in the vacuum insulation tank is supplied to the battery by driving the battery-applied pump, and a battery temperature is kept within the temperature range.
1. A trilateral cycle system comprising:
an expander driven by a working fluid in a gas-liquid two-phase flow, the working fluid being supplied from a heat exchanger; and
a power generator connected to the expander,
wherein the power generator is disposed at an intermediate position of a passage, which is configured to allow the working fluid in the gas-liquid two-phase flow to flow therethrough, between the heat exchanger and the expander,
a cooling passage for cooling the power generator forms a part of the passage,
the expander and the power generator are accommodated inside one housing,
the housing is connected with an inlet pipe configured to allow the working fluid in the gas-liquid two-phase flow passing through the heat exchanger to flow into the housing, and an outlet pipe configured to allow the working fluid passing through the expander to flow out of the housing,
the cooling passage is configured such that a leading end thereof communicates with the inlet pipe of the housing, an intermediate position thereof passes through the power generator, and a trailing end thereof communicates with an inlet of the expander,
an output shaft of the expander and a drive shaft of the power generator are coaxially arranged and connected to each other,
a shaft-applied passage configured to allow the working fluid in the gas-liquid two-phase flow to flow therethrough is formed inside the output shaft and the drive shaft, and each of the output shaft and the drive shaft is implemented by a pipe, and
the cooling passage includes the shaft-applied passage and a communication passage that establishes communication between an outlet of the shaft-applied passage and an inlet of a fluid device of the expander.
2. The trilateral cycle system according to claim 1 ,
wherein the shaft-applied passage is formed inside both the output shaft and the drive shaft, and each of the output shaft and the drive shaft is implemented by a pipe, and
a pipe outer diameter of the output shaft is identical to a pipe inner diameter of the drive shaft, a leading end of the output shaft is disposed inside the drive shaft, and an outer peripheral surface of the output shaft is fixed to an inner peripheral surface of the drive shaft.
3. The trilateral cycle system according to claim 1 ,
wherein a trailing end of the inlet pipe is disposed inside the housing,
a pipe outer diameter of the drive shaft is equal to or smaller than a pipe inner diameter of the inlet pipe,
a leading end of the drive shaft is disposed inside the inlet pipe, and
the drive shaft rotatably communicates with an inside of the inlet pipe through the shaft-applied passage formed inside the drive shaft.
4. The trilateral cycle system according to claim 1 ,
wherein the expander and the power generator are connected by one output and drive shaft,
a shaft-applied passage configured to allow the working fluid in the gas-liquid two-phase flow to flow therethrough is formed inside the output and drive shaft, and
the output and drive shaft is implemented by a pipe.
5. The trilateral cycle system according to claim 4 ,
wherein the cooling passage includes only the shaft-applied passage and communicates with an inlet of a fluid device of the expander.
6. The trilateral cycle system according to claim 4 ,
wherein the cooling passage includes the shaft-applied passage and a communication passage that establishes communication between an outlet of the shaft-applied passage and an inlet of a fluid device of the expander.