The propulsion demands of high-speed naval vessels often rely on gas turbines, producing significant amount power achieving thus high performance requirements. Gas turbines can be used either to provide purely mechanical propulsion, or alternatively generate electricity, which is subsequently by electric drives propel the ship. However, thermal efficiencies are lower than those Diesel engines s...

This study investigates the technical and economic feasibility of replacing throttling valves with smale-scale, oil-free turbomachinery in industrial steam networks. is done from perspective turbomachine, which has to be integrated into a new or existing process. The considered machines have power range P=[0.5,…,250 kW] been designed using real data processes. Design guidelines are developed, t...

Turbine overspeed events lead to the most dangerous and costly of catastrophic turbine failures. Traditionally, overspeed protection systems were designed and provided by the original equipment manufacturers (OEMs)—few options were available either in terms of testing or modifying these systems. With new turbines, and with the retrofit of older systems, it is more common to see third party syst...

Combined heat and power (CHP) plants are widely used in industrial applications. In the aftermath of the recession, many of the associated production processes are under-utilized, which challenges the competitiveness of chemical companies. However, under-utilization can be a chance for tighter interaction with the power grid, which is in transition to the so-called smart grid, if the CHP plant ...

Optimal operation of site utility systems is becoming an increasingly important part of any successful business strategy as environmental, legislative and commercial pressures grow. A reliable steam model allows a clear understanding of the system and of any operational constraints. It can also be used to determine the true cost of improvement projects, relating any changes in steam demand back...

The economic dispatch (ED) problem is defined as that of finding an optimal distribution of system load to the generators in order to minimize the total generation cost while satisfying the total demand and generating-capacity constraints. The different combinations of combustion turbines and steam turbines in a combined cycle (CC) unit produce multiple states and each state has its own unique ...