Showing papers in "Energy Conversion and Management in 1996"

TL;DR: In this paper, the performance of a solar assisted cylindrical energy storage tank is investigated theoretically, where the energy is stored as the latent heat of the phase change material (PCM), and the heat transfer fluid (HTF) flows parallel to it.

TL;DR: In this paper, the performance of single-pass and double-pass combined photovoltaic thermal collectors with steady-state models is analyzed with the working fluid is air and the models are based on energy conservation at various nodes of the collector.

TL;DR: In this article, a multi-phase, multi-component numerical model STARS was used to study the ability of the selected aquifers to accept and retain for long periods of time large quantities of CO2 injected in a supercritical state.

TL;DR: In this article, the authors used zeolite as an adsorbent for physical adsorption, progressing from the previously used PSA (Pressure Swing Adsorption) method to the more advanced PTSA (pressure and temperature swing adsorptions) method.

TL;DR: In this article, the authors present data on some of the natural carbon dioxide fields, and compare the effects of these natural fluid-rock interactions with those observed in laboratory experiments performed to establish what reactions occur during the geological disposal of carbon dioxide.

TL;DR: In this article, the green alga Monoraphidium minutum could tolerate 200 ppm sulfur dioxide and 150 ppm nitric oxide in laboratory culture and showed that this type of simulated flue gas is tolerated very well by microalgae, and is an excellent substrate for their growth.

TL;DR: The most immediate environmental effect of solving CO 2 in the ocean is a reduction of the pH as mentioned in this paper, and the present rate of change of pH in the surface mixed layer due to invasion of anthropogenic CO 2 from the atmosphere is close to 0.015 pH units per decade.

TL;DR: The IEA Greenhouse gas R&D programme is an international collaboration supported by 16 countries and several industrial organisations as mentioned in this paper, which has evaluated technologies for reducing emissions of greenhouse gases from power stations.

TL;DR: In this paper, a simplified analytical model is developed to determine the energy performance of an underground air tunnel, assuming that the air tunnel-ground system reaches periodic and quasi-steady state behavior after some days of operation.

TL;DR: In this article, the technical and economic feasibility of aquifer disposal of CO2 in the low permeability sedimentary rocks of the Alberta Basin has revealed several new generic concepts that may be applicable to other sedimentary basins throughout the world.

TL;DR: In this article, a thermodynamic analysis based on the first and second laws is conducted to evaluate the performance of a thermal vapor compression (TVC) desalination system, and the exergy losses due to irreversibilities in different subsystems of the TVC system are evaluated.

TL;DR: In this article, the authors estimate the amount of energy and carbon embodied in the non-energy exports and imports of Brazil for the period 1970-1993 in order to determine whether or not the international trade of carbon rich products is a problem worth addressing in the case of Brazil.

TL;DR: In this paper, the authors developed an empirical equation to correlate the monthly average daily horizontal global, diffuse and beam radiations with the fraction of maximum possible number of sunshine hours, based on measured data between 1988 and 1992 from the TUBITAK-MRC station in Gebze, Turkey.

TL;DR: In this paper, an integration of biomass as a basic product for the synthesis of methanol improves the conversion efficiency from solar energy to methanoline, and a lower energy demand for the recovery of CO2 from atmosphere than from combustion fluegases is achieved.

TL;DR: In this paper, the authors focus on the costs and consequences of large-scale CO2 transport in steel pipes, and show that transport in liquid form is superior to gaseous form.

TL;DR: In this paper, a model is proposed to estimate the solar radiation parameters (global and diffuse solar radiation) by making use of ambient temperature, which has been found that there is a strong relation between the ambient temperature and the solar radii.

TL;DR: In this paper, the acidification around the release point of CO 2 was analyzed and the effects of lower pH on marine organisms were quantified using a methodology which allowed them to quantify the effects.

TL;DR: In this article, the authors investigated how a transition from a fossil-fuel-based energy system to a CO2-neutral biomass-based system would affect the energy efficiency in biomass production and transportation.

TL;DR: In this paper, the dissolution behavior of liquid CO2 droplets dispersed into the sea water has been numerically simulated using measured dissolution rates, based on the results, shrinking or dissolution mechanism of a droplet covered with clathrate film has been discussed in detail.

TL;DR: In this paper, the authors reviewed various aspects of solar steam generating systems and the operational problems that were encountered by various users of these systems and identified the most common operational problems encountered by these systems.

TL;DR: The UK soil N2O emissions will be the largest single source of NO in the UK, when industrial emissions as a result of adipic and nitric acid production will stop later this year.

TL;DR: In this article, a computer model is employed to calculate carbon balances of two land management and biomass utilization scenarios - conventional forest management and short-rotation forestry -to mitigate the net flux of anthropogenic CO 2 to the atmosphere by removing C from the atmosphere and sequestering it in growing trees.

TL;DR: In this paper, a new sensor for detecting knock is presented, which uses the exhaust gas temperature as an engine variable and utilizes the fact that this variable decreases a considerable amount when the engine goes into knock.

TL;DR: In this article, the authors discuss the background and impact of the modern wind energy conversion system on future power generation and discuss the potential of wind energy to be a viable solution to clean air power generation.

TL;DR: In this paper, the authors studied the underground storage of carbon dioxide from fossil fuel-fired power plants for mitigating greenhouse gas emissions, and proposed a method for mitigating emissions from coal-powered power plants.

TL;DR: A new design of photobioreator is investigated in order to achieve efficient photosynthetic performance and a large scale microalgal production using a unit basic typePhotobioreactor (1 m 2 basal area) is discussed.

TL;DR: In this paper, the thermohydraulic performance of packed-bed solar air heaters has been investigated and the effective efficiency has been employed to express the net useful thermal energy gain taking into account the equivalent thermal energy required to produce the work energy necessary to overcome the additional friction or hydraulic losses as a result of packing the solar air heater duct with absorber matrices.

TL;DR: In this article, a solar grain dryer with photovoltaic powered air circulation has been designed, developed and tested in the field, which is suitable for rural farm applications where grid electricity and fossil fuel are either nonexistent or extremely expensive for the average farmer.

TL;DR: In this paper, a model for prediction of the thermal performance of a multi-layer PCM (phase change material) storage unit is presented based on the conservation equation of energy for the PCM and for the heat transfer fluid.

TL;DR: In this article, analytical expressions for the water temperature of an active solar distillation unit with collectors and concentrators have been derived in terms of system and climatic parameters, and it is analytically shown that the efficiency of the system with a concentrator is higher than that with a collector.