Generally water is employed a working fluid in vapor power cycle because it is found to be better than any other fluid.
The binary cycle is an attempt to overcome some of the shortcomings of water and to approach the ideal working fluid by using two fluids.
The most necessary characteristics of the operating fluid suitable for vapor cycles are,
Low triple point temperature.
Condenser pressure isn’t too low.
High critical temperature and maximum pressure.
High enthalpy of vaporization.
High thermal conductivity
Therefore it is concluded that no single operating fluids may have desirable requirements of working fluid. Different working fluids may have different attractive feature in them.
In such cases two vapor cycles operating on two different working fluids are put together.
One is high temperature region and the other in low temperature region and the arrangement is called binary vapor cycle.
In condenser, the water is employed for extracting heat from the mercury so as to condensate it. The amount water entering mercury condenser.
The mercury condenser conjointly act as steam boiler for super heating of warmth liberated during condensation of mercury is too large to evaporate the water entering of seam an auxiliary boiler may be employed or superheating may be realized within the mercury boiler itself.
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