Time Dependent Production

Three different application examples involving time dependence in different ways are analyzed using the executable tool VarloadTL.exe. They all start from a known design point in the steady state. The first predicts the detailed performance of a power system at a sought load ratio load design load . The second estimates the penalty of off-design performance of a cogeneration system given demand profiles. The third computes the optimal operation of a facility of a number of single-product...

Time Independent Production

Onsi Fuel Cell

Improved base-load system design is demonstrated by four exploring journeys. The executable tools SystemTL.exe, DesalTL.exe, and NovelsysTL.exe are used. Automated local optimization in the three tools assumes a single dissipation price for cdi and 1 for Kzl . The first journey deals with gas turbine power systems and is generated by the tool SystemTL.exe. The second deals with seawater distillation systems and is generated by the tool DesalTL.exe. The third deals with testing new ideas applied...

Gas Fired Turbine

Gas Turbine Blueprint

Configurations 26, 27 Gas Turbine Power Hybrid All-Water System 26 driving VC unit a 27 driving VC unit b Conventional and High Prime Steam Temperature Coal-Fired System 1 -6 steam turbine sectns 15-18 feed heaters 20 open feed heater 27-30 mixers 7,8,9 pumps High Temp Heater Driving Air Turbine 4 alternatives High Temp Heater Driving Air Turbine 4 alternatives 3 Rehtr 14 amp Regenrtr 23 not active Compr24 H Pr latm intake 4 Rehtr 14 amp Regenrtr 23 not active Compr 24 HPr Intake lt latm 65 amp...

General References

The Thermoeconomics of Sea Water Conversion, UCLA Report No. 62-63, August. 2. El-Sayed, Y. and Evans, R. 1970 . Thermoeconomics and the design of heat systems, Journal of Engineering for Power, January, 27-35. 3. El-Sayed, Y. and Aplenc, A. 1970 . Application of the thermoeconomic approach to the analysis and optimization of a vapor-compression desalting system, Journal of Engineering for Power, January, 17-26. 4. Gaggioli, R., Ed. 1980 . Thermodynamics...

The Analyzed Systems and Their Flow Diagrams

Flow Diagram Production Steam Boiler

The systems analyzed by the first five analysis tools are listed serially by name. Their flow diagrams are presented in pages 153-197 for immediate availability when running the tools. Program systemTL configure own system Simple combined cycle, power-only and power heat Two-pressure combined cycle, low firing Two-pressure combined cycle, high firing Three-pressure combined cycle, low firing Steam power cycle, five feed heaters, sub-critical and super-critical Simple combined cycle for power...

Software Analyzed Systems and their Flow Diagrams

The compact disc 8.5 MB consists of six executable programs, their essential data files, and dynamic loading library files. Two related documents are also included. Five programs deal with analysis and one program deals with tutorial material book-solved tutorial examples and source code examples . They are grouped as follows 8.1.1 The six executable programs SystemTL System analysis tool user describes the system DesalTL System analysis tool user selects the system NovelsysTL Systems involving...

Managing the Inefficiency of Variable Load Operation

Control strategy, load management, and system redesign have roles in minimizing the loss in the system's design point efficiency by operating away from the design point. i The role of control Figure 6.1 illustrates the quality of control from the fuel efficiency viewpoint Case a Ideal control. The overall system efficiency remains constant at design value at all part loads. Fuel is reduced linearly with load. Case b Realistic control. Efficiency is reduced as the load is reduced. Fuel is...

The Exergy Function

Exergy Loss Destruction Steam Turbine

The exergy function is a general work potential function for simple chemical systems. The function evolved from the work of Carnot and Clausius, and is due to Gibbs 1978 . The function is Es U P0 V T0 S xco Nc 2.1 Es is the maximum work that could be obtained from a sample of matter of energy U, volume V, number of moles or mass of each matter species Nc when the sample of matter is allowed to come to equilibrium with an environment of pressure P0, temperature Ta, chemical potential co for each...