Horizontal Vs Vertical Turbine

Advantage of Horizontal Machines

Advantage in Design:
-Simple in Design (Standardized size available)
-Hydraulic path is simpler (No distributor for tubular)
-No Complicated parts
-Even distribution of load on foundation (as turbine load come at different place and generator load at different place etc.,)

Advantage in Efficiency:
-Better efficiency for lesser MW project (as flow is straight and Hydraulic  passage is of lesser restriction to flow) 

Advantage in Layout:

-Simpler Layout (all auxiliary equipment can be placed in one floor and close to main generating equipment - Better coordination by operator)

-Entire equipment is directly under crane hook making approach very easy for erection, maintenance Reduce down time during maintenance.

Advantage in Supply:

-As design is simpler and standardized, quicker delivery period.

-All equipment can be supplied in 6 to 12 months.

-Saving in delivery period of the order of about 6 months

Advantage in Erection:
-Erection time is less (as equipment distributed on one floor)
-Machine (turbine as well as generator) can be fully assembled in shop / service bay and lowered to foundations.
-Results in shorter erection & commissioning time (3 to 6 months)

Advantage in Operation:
-Easier control and vigil (operator sitting in control room can see all the equipments and can take preventive shutdown, if required)
-No skilled personnel are required. As no complex parts are involved thus, easy to understand the parts and system

Advantage in Maintenance:
-Simple design; hence availability of spares is easy.
-Easy Maintenance; All equipment are exposed in Horizontal formation thus can be maintained independently like turbine & Generator independently.
-Also the Turbine is exposed (not fully buried in concrete) thus inspection, repair, maintenance etc., is easier.


Horizontal Francis Turbine