Computer exergonomics of power plants without exhaust gases

Yantovskii, E.I.; Zvagolsky, K.N.; Гавриленко, В.А.

doi:10.1016/0196-8904(92)90037-w

Cited by 10 publications

(3 citation statements)

References 3 publications

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“…VERSION OF 1991 The closed cycle power plant concept based on algae photosynthesis in a pond, combustion of organic matter of dried algae in a zero-emission power plant, and CO 2 capture to return it to the pond for feeding the algae was published in 1991 [8] (see Fig. 5).…”

Section: Comparison With the First Softmentioning

confidence: 99%

Solar energy conversion through seaweed photosynthesis and zero emissions power generation

Yantovski¹

2008

Surf. Engin. Appl.Electrochem.

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The present paper is aimed at describing a "closed cycle" power plant scheme (Solar Oxygen Fuel Turbine (SOFT)) with macroalgae (seaweed) cultivation in a pond, combustion of its organic matter in a fluidized bed boiler using the Rankine cycle, and return of the combustion products to the pond to feed the algae. The oxygen used for combustion is released to the atmosphere during photosynthesis. It is further elaborated in a paper presented at ECOS2005 in Trondheim. As a renewable fuel, the seaweed Ulva lactuca is selected. Its growth rate in many experiments (in the literature) is 0.1-0.2 per day, the heating value of its dry weight is 19 MJ/kg, and its optimal concentration in salt water is 1 : 1000. The energy efficiency is less than in photovoltaics, but the energy expenditures to construct the pond as a solar energy receiver are much less, so it gives some economic benefits. For a power unit of 100 kW, the pond surface is about 4 hectare. The cultivation of seaweed in sea-water ponds is well developed in Italy and Israel for water cleaning and chemical production. Construction in the future of a SOFT system near the Dead Sea in the Israeli desert would provide the country with needed power, chemicals, and fresh water using solar energy. The system is protected by United States Patten no. 6 477 841 B1 dated 12.11.2002 with priority in Israel dated 22.03.1999. Many more benefits to the customer than are in the patent text are highlighted in the paper, including fresh water by desalination. In view of the active work in Italy on water cleaning using Ulva and contaminants in the water as nutrients for an increase of the biomass productivity, an additional target of the SOFT cycle might be incineration. Some suppositions of the use of a desert surface for massive scale use of ponds are given.

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Section: Comparison With the First Softmentioning

confidence: 99%

Solar energy conversion through seaweed photosynthesis and zero emissions power generation

Yantovski¹

2008

Surf. Engin. Appl.Electrochem.

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“…Besides the efforts for reduction of CO 2 emissions from existing power plants, concepts of power plants with zero CO 2 emission were proposed and studied. Particular attention has been paid to the research of trans-critical CO 2 cycle with fuel burning in highly enriched oxygen (99.5%+) and recycled CO 2 from the flue gas [16][17][18][19][20][21][22][23][24][25]. The common features of these cycles are the use of CO 2 as the working fluid and O 2 as the fuel oxidizer, produced by an air separation unit.…”

Section: Introductionmentioning

confidence: 99%

Configuration Analysis of a Novel Zero CO2 Emission Cycle With LNG Cryogenic Exergy Utilization

Zhang

Lior

2003

Advanced Energy Systems

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A novel liquefied natural gas (LNG) fueled power plant is proposed, which has virtually zero CO2 and other emissions and a high efficiency. Natural gas is fired in highly enriched oxygen and recycled CO2 flue gas. The plant operates in a quasi-combined cycle mode with a supercritical CO2 Rankine-like cycle and a CO2 Brayton cycle, interconnected by the heat transfer process in the recuperation system. By coupling with the LNG evaporation system as the cycle cold sink, the cycle condensation process can be achieved at a temperature much lower than ambient, and high-pressure liquid CO2 ready for disposal can be withdrawn from the cycle without consuming additional power. The net thermal and exergy efficiencies of a base-case cycle are found to be over 65% and 50% respectively, which can be increased up to 68% and 54% when reheat is used. Cycle variants incorporating reheat, intercooling, and reheat+intercooling, as well as no use of LNG coldness, are also defined and analyzed for comparison. The approximate heat transfer area needed for the different cycle variants is also computed. Besides electricity and condensed CO2, the byproducts of the plant are H2O, liquid N2 and Ar.

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“…2 However, the concern of reducing CO 2 emissions to atmosphere has brought attention to fuel combustion in a mixture of O 2 and flue gases (H 2 O, CO 2 or both). [3][4][5][6][7][8] Efficiencies of 35-45% seem possible in spite of power use for O 2 production. The main benefit of these cycles is zero-emission, i.e.…”

Section: Introductionmentioning

confidence: 99%

95/05436 A zero emission combustion power plant for enhanced oil recovery

1995

Fuel and Energy Abstracts

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-We have studied an internal combustion CO 2 power plant to enhance oil recovery. The plant has air separation of O 2 for combustion and of N 2 for injection, a combustion chamber, a turbine, a compressors, a recuperator, and a cooling tower. The oil-derived gases are used to produce liquid CO 2 , highly compressed N 2 , process steam and, if necessary, power. No exhaust gases are released. The plant design is presented along with efficiency calculations. The plant should be of interest for offshore oil production.

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Computer exergonomics of power plants without exhaust gases

Cited by 10 publications

References 3 publications

Solar energy conversion through seaweed photosynthesis and zero emissions power generation

Solar energy conversion through seaweed photosynthesis and zero emissions power generation

Configuration Analysis of a Novel Zero CO2 Emission Cycle With LNG Cryogenic Exergy Utilization

95/05436 A zero emission combustion power plant for enhanced oil recovery

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