초록 ▼

A cooling system includes a turbo compressor for compressing a coolant and a turbo expander fluidically connected to the turbo compressor via one or more heat radiators. In order to insure a constant expansion ratio in the turbo expander at all operating temperatures, without varying the rotational

A cooling system includes a turbo compressor for compressing a coolant and a turbo expander fluidically connected to the turbo compressor via one or more heat radiators. In order to insure a constant expansion ratio in the turbo expander at all operating temperatures, without varying the rotational speed of the turbo compressor, a first controller controls the flow rate of coolant to the turbo expander while a second controller in a bypass passage controls a flow rate of coolant bypassed to the intake side of the turbo compressor. The first and second controllers are controlled by a control unit sensitive to the coolant temperature at the intake side of the turbo expander.

대표청구항 ▼

A cooling system comprising; a turbo compressor for compressing a coolant, a heat radiator fluidically connected to said turbo compressor for removing compression heat of the compressed coolant, a turbo expander fluidically connected to said heat radiator via a first flow passage for expanding the c

A cooling system comprising; a turbo compressor for compressing a coolant, a heat radiator fluidically connected to said turbo compressor for removing compression heat of the compressed coolant, a turbo expander fluidically connected to said heat radiator via a first flow passage for expanding the coolant from said radiator; a first flow controller placed in said first flow passage between said radiator and said turbo expander and controlling a flow of said coolant from said radiator to said turbo expander; a bypass passage directly connecting said radiator and an intake side of said turbo compressor; a second flow controller in said bypass passage and controlling a flow of said coolant from said radiator to said intake side of said turbo compressor via said bypass passage; a temperature sensing means for sensing a temperature of the coolant at an intake side of said turbo expander; and a controller unit receiving temperature signals from said temperature sensing means and comprising means for operating said flow controllers as a function of the temperature signals.