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.

                                                             Horr. Francis Arrangement