Xem 1-7 trên 7 kết quả Reciprocating gas engines
  • Similar performance benefits are also available in gas turbine an reciprocating gas engine cogeneration systems. For example, an class technology gas turbine generator with feeding to an HRSG (which in turn provides process steam) can yield overall energy effectiveness levels between 80-85% depending upon process steam conditions. In comparison, the same F-class gas turbine i combined cycle (and producing power only) yields an overall energy effectiveness of between 50-55% depending upon the c design. This comparison is illustrated in Figure 3.

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  • In the past, many a good Machinery Manager was “made” through many years of experience, and also through many costly mistakes. These “experts” passed on their experience to the people they worked with, but seldom could experience gained in one particular location prepare someone for the multitude of things that can go wrong. It is because of this that the authors must be commended for their effort to disseminate not only their experience, but also the lessons they learned from many other experts....

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  • Chapter 9 - Gas power cycles. The objectives of Chapter 9 are to: Evaluate the performance of gas power cycles for which the working fluid remains a gas throughout the entire cycle; develop simplifying assumptions applicable to gas power cycles, review the operation of reciprocating engines, analyze both closed and open gas power cycles,...

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  • Chapter 9 - Gas power cycles. The objectives of Chapter 9 are to: Evaluate the performance of gas power cycles for which the working fluid remains a gas throughout the entire cycle, develop simplifying assumptions applicable to gas power cycles, review the operation of reciprocating engines, analyze both closed and open gas power cycles,...

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  • With combined power and heat generation (cogeneration) the waste heat incurred during engine operation is recovered and utilized to satisfy thermal system process requirements for low- grade steam and/or hot water. In many cases this utilization of waste heat results in overall systems of efficiencies of up to 90+% (thermal + electrical). This efficient form of energy conversion is able to achieve primary energy savings of about 40% using gas engine cogeneration systems, compared with conventional separate power and heat generation.

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  • Universal sensitivity to our environment and environmental considerations have led to the development of projects that not only minimize GHG (Green House Gas) emissions, but also help to displace GHG emissions from existing plants as well as other emissions sources. Thus, one of the more significant advantages for gas turbine, combined cycles and gas reciprocating engines is the potential for GHG reductions as compared to less efficient systems.

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  • Cogeneration is frequently defined as the sequential production of necessary heat and power (electrical or mechanical) or the recovery of low-level energy for power production. This sequential energy production yields fuel savings relative to separate energy production facilities because both the heat and power requirements are satisfied from a common/single fuel source.

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