Showing papers in "Energy Conversion and Management in 1993"

TL;DR: The potential use of CO2 flooding would be considerably greater, if large quantities of the gas, extracted from power stations, were available at low cost as mentioned in this paper, but the cost of producing an extra barrel of oil ranges from $5 to $8.

TL;DR: In this article, changes to the mineralogy and water chemistry of both brackish and briney waters in carbonate and siliciclastic aquifers in this area as a result of the injection of CO2 were investigated.

TL;DR: In this paper, it is shown that the best aquifers for CO2 disposal onshore are the widespread Permo-Triassic sandstones, and further onshore potential exists in younger Mesozoic reservoirs.

TL;DR: In this article, the technology for growing microalgae as a renewable biomass source can be applied to the production of a diesel fuel substitute (biodiesel) by using a mass culture facility.

TL;DR: The storage of CO2 in aquifers or underground water-bearing zones is a possible option for confining CO2 produced by burning fossil fuel and thereby for alleviating its build-up in the atmosphere as mentioned in this paper.

TL;DR: In this paper, a preliminary cost analysis of such a process is presented that suggests that, if high productivities are achievable, overall costs would compare favorably with alternative physical-chemical processes for flue gas CO2 capture and sequestration, but would be higher than CO2 mitigation with terrestrial plants.

TL;DR: The results of the performed screening study indicates that it is possible to transport CO2 over large distances within a reasonable unit cost as discussed by the authors, which is evident that the effect of large scale solutions to reduce unit costs are substantial.

TL;DR: In this paper, a simulation model of the actual processes occurring during the thermodynamic cycle of a real spark ignition engine is developed, incorporating such important features as heat exchange of the cylinder gases with the chamber walls (during all phases), real spark timing, real valve opening and closing timings, accurate simulation of the spherical flame front movement issuing from the spark plug and calculation of eight chemical species concentration during combustion, at every engine degree crank angle.

TL;DR: In this paper, new models of the dynamic patterns of carbon uptake by forest ecosystems allow improvements in the estimation of the costs of carbon sequestration in the U.S. The preliminary results of an effort to update an earlier study indicate that conversion of environmentally sensitive and economically marginal cropland and pastureland in the USA could offset as much as 25% of current CO2 emissions at costs of $US 8-60 per short ton.

TL;DR: A brief review on the design aspects of the structural, optical and thermal subsystems of parabolic trough concentrators is given in this paper, where existing methods of performance evaluation and techniques to improve their performance are also discussed.

TL;DR: In this paper, a theoretical and experimental study was conducted to investigate the effect of adding a passive condenser on the performance of the single slope, basin type solar still, and the experimental results show good agreement with the theoretical predictions and an increase of 50% in the still efficiency.

TL;DR: In this article, the design and performance of a solar fruit and vegetable dryer developed at Area Energetica, Dipartimento SIRE, Divisione Ingegneria Sperimentale of ENEA-C.R.E. Trisaia was described.

TL;DR: In this article, the location and size of depleted oil and natural gas reservoirs in the United States were extracted from a Petroleum Information Information, Inc., database, and the locations of and CO2 emissions from power plants were also determined.

TL;DR: In this paper, the authors used fuzzy logic to develop a control scheme for visual comfort in buildings used either for home or office, and a linguistic type of control algorithm was presented.

TL;DR: In this paper, an extended two-dimensional model was used to compute the heat transfer and the experimental verification revealed that convection heat transfer in the Trombe channel depends upon the distance from the bottom vents in a similar way as convention heat flow in the entrance region in air ducts.

TL;DR: In this paper, the authors present a process-design baseline that encompasses the integrated gasification combined-cycle (IGCC) system, C0[sub 2] transport by pipeline, and land-based sequestering of C0sub 2 ] in geological reservoirs.

TL;DR: In this article, the formation of CO 2 hydrate at the interface between liquid CO 2 and water is studied. And a partial differential equation taking into account the diffusion and reaction in the CO 2 liquid phase is derived.

TL;DR: In this paper, the power potential of an endoreversible diesel cycle with combustion is analyzed and optimized, and a mathematical expression is derived and optimized for the power output of the cycle.

TL;DR: In this article, the thermal performance of a regenerative active solar distillation system working under the thermosyphon mode of operation has been studied for a Delhi climatic condition.

TL;DR: Based on energy balances for different components of a multi-basin solar still, namely, the basinliner, the water mass and the glass cover, analytical expressions for water and glass temperatures have been derived in terms of climatic and design parameters of the system as mentioned in this paper.

TL;DR: In this paper, the maximum possible specific power (specific power availability) that can be obtained from heat engines with a set of high temperature heat source and low temperature sink is analyzed.

TL;DR: In this article, the output response of an endoreversible Otto cycle with combustion is optimized with respect to both power and mean effective pressure, and an additional criterion for use in the evaluation of the performance and the suitability of an Otto engine.

TL;DR: In this article, the authors proposed an underground injection system of gaseous carbon dioxide into useless saline aquifers in sedimentary basins, which is recovered from flue gas of fossil fuel fired power stations possibly by amines.

TL;DR: In this article, the authors summarized the work conducted by the EOR Subcommittee and by the Subsurface Contractor as part of the AOSTRA/Industry/Government Carbon Dioxide Disposal Study.

TL;DR: In this paper, the effect of length, radius of pipe and air mass flow rate on the seasonal cooling potential of an underground air pipe system have been investigated, and the most effective combination of radius, length, number of pipes and flow rate for maximum cooling potential, corresponding to a given mass of material of the pipe have also been investigated.

TL;DR: In this article, a method to reduce the environmental problems connected to the emission of carbon dioxide, (CO2) CO2 is proposed to be deposited on the seabed in the form of hydrates, which are crystalline materials with an appearance like snow or ice.

TL;DR: In this paper, the authors combined a cryogenic circuit with a gas turbine power plant burning LNG and devised a computer program to calculate performance, namely, power and overall efficiency for the combined system over a wide range of operating variables Rc and T3 covering design and off-design loading conditions.

TL;DR: In this article, the authors estimate the pipe-laying and servicing costs of a CO2 disposal in the ocean to be in the range of $1-2 million per km, exclusive of the release system cost.

TL;DR: In this paper, a 1D model of the carbon cycle was developed to evaluate the influence of calcium carbonate dissolution and future CO2 emission patterns on the ocean's capacity to absorb CO2, and a vertical diffusion model was adapted to simulate the discharge of fossil fuel CO2 below the thermocline.

TL;DR: In this article, the authors investigated the total cost-efficiency, the energy requirement and possible added emissions of CO2 when implementing recovery and disposal of CO 2 in real sites in Norway.