Parameters

Unit

Value

Ambient temperature

K

298

Ambient pressure

Pa

101,330

Volume of storage vessel

m3

40

Adiabatic index

-

1.4

Gas constant

J∙kg−1∙K−1

287

Constant pressure specific heat of air

J∙kg−1∙K−1

1004.5

Specific heat of water

J∙kg−1∙K−1

4200

Density of water

kg∙m−3

1000

Efficiency of water pump

%

88

Efficiency of hydroturbine

%

90

Design efficiency of compressor

%

88

Preset pressure

Pa

3,000,000

Terminal pressure in the high pressure vessel

Pa

4,000,000