A comparison of the non-fuel variable operation and maintenance (O & M) costs distribution for one year operation of the water desalination side are shown in Fig. 45.7. The potential cost savings (i. e. actual—reference) are also shown in Fig. 45.7. Figure 45.7 does not include fixed operation and maintenance costs. The potential savings represent […]

A comparison of the fuel utilization distribution in power generation for 1 year op­eration for the reference and actual plant data are shown in Fig. 45.5. The potential fuel savings (i. e. reference—actual) is also shown in Fig. 45.5. This potential savings represent non-capital-intensive potential improvements in operating efficiencies by continuously positioning operational practice towards […]

Case study plant performances are summarized in Figs. 45.3 and 45.4. The energy generated ranges from 240,000 to 460,000 MWH. Water production varied between 3,000,000 and 4,800,000 m3 per month. The power to water ratio ranged between 51.6 and 151.3 kWh/m3. Plant capabilities and availabilities are characteristics of the cogeneration power and water production plant. […]

Design parameter data were collected from reference plant operation manuals for comparison with actual plant data in the case study. Actual performance of the case study were analyzed using operational data for 1 year operation period for maxi­mum continuous rating (MCR). MCR is defined as the maximum output that a plant is capable of producing […]

The operating efficiency of an organization can be measured in many ways. A num­ber of aspects can be considered in evaluating the operating efficiency. Common categories of operating efficiency that are related to operational practices include; fuel acquisition efficiency, plant operating efficiency and capital efficiency. Fuel acquisition is a significant aspect in determining the marginal […]

Case Study A case study of a power/water cogeneration plant was used to compare plant design characteristics with actual plant performance data. The gas turbine cycle used in the generating company is a constant flow cycle with a constant addition of heat energy. The Brayton power cycle is the ideal thermodynamic cycle that approximates the […]

In cogeneration power/water production using the multi-stage flash (MSF) desali­nation process, the MSF is energy intensive [13]. The value and the cost of the thermal energy supplied to the MSF process depends on the method of supplying this energy. Steam can be supplied directly from fuel operated auxiliary boilers (FOABs) or from waste heat recovery […]

In the public literature, energy conservation methods and techniques have been discussed by many authors including [11]. Energy use issues discussed in this pa­per include; energy in installed capacity, operations and general plant utility man­agement practices. Good plant management practices include: effective repairing of leaks (natural gas and compressed air); maintaining optimum combustion ef­ficiency, as […]