Showing papers in "Applied Energy in 1999"

TL;DR: In this paper, a comprehensive discussion of the future of energy use and the consequent environmental impacts in terms of acid precipitation, stratospheric ozone depletion and the greenhouse effect is presented.

TL;DR: A systematic approach for optimization of insulation material thickness is developed in this paper and then applied to Palestine, where the optimization is based on the life cycle cost analysis and the optimal insulation thickness is selected as a function of degree days and wall thermal resistance.

TL;DR: In this paper, the applicability of night ventilation in air-conditioned office buildings was investigated and the potential for energy savings and/or improved internal comfort conditions by applying night ventilation cooling was examined.

TL;DR: In this paper, several expressions have been used to estimate global solar radiation from sunshine hours for weather stations in Oman, an arid region, including original (linear) and modified (linear-logarithmic) Angstrom-Black type regression functions, a quadratic function, a power relationship, power-trigonometric equation and one from a new Angstrom−black type logarithm model.

TL;DR: In this paper, the authors consider the debate in the UK and the USA on some economists' claims that improving energy efficiency will lead to a greater energy consumption (than would have otherwise occurred), a concept termed the Khazzoom-Brookes postulate.

TL;DR: In this paper, the implementation of bending-torsion coupling of a composite wind turbine rotor blade to provide passive pitch-control is investigated, where the coupling plies are restricted to a loadbearing spar, while a softer skin provides for the aerodynamic shape.

TL;DR: In this article, the authors outline the growing need of energy in the developing countries and the acute population growth, which will exceed 10 billion by the year 2050, and conclude that renewable energy penetration into the energy market is much faster than was expected a few years ago and by 2020, 10-15% of our prime energy will be met by renewable energy.

TL;DR: In this article, two Jordanian oil-shale samples have been pyrolysed and gasified, non-isothermally, using a thermogravimetric analyser.

TL;DR: In this paper, the authors describe the technological development of this renewable energy source in terms of biogas production prices and discuss the socioeconomic costs of technology development including state budget and employment effects.

TL;DR: In this article, the authors compared the energy efficiency of energy efficient motors with those of standard efficiency motors ranging from 5 to 300 HP, with reference to Bahrain's market, and discussed the energy-conservation capability of energy-efficient motors in the petrochemical industry.

TL;DR: In this paper, the authors developed a global land-use and energy model (GLUE) formulated using a System Dynamics (SD) technique to evaluate global bioenergy potential, and the results showed that there is a large potential for biomass residues such as cereal harvesting residues, animal dung, roundwood felling residues, and timber scrap.

TL;DR: In this article, a study was carried out on the energy consumption patterns, in different agro-climatic zones, for the wheat crop in the state of Punjab in India.

TL;DR: In this paper, the authors used the energy equilibrium model to study conventional systems and cogeneration-based district energy (DE) systems for providing heating, cooling and electrical services, not only to assess the potential economic and environmental benefits of cogenerations-based DE systems, but also to develop optimal configurations while accounting for such factors as economics and environmental impact.

TL;DR: In this paper, a model for heat-and-mass transfer in a desalination plant, using the aero-evapo-condensation process, has been studied theoretically and experimentally.

TL;DR: In this article, the improvements of parameters concerned with the performances of gas turbines [i.e., net work output, thermal efficiency, specific fuel consumption (SFC), turbine and compressor efficiencies, compressor's inlet temperature and turbine's in-let temperature] were investigated.

TL;DR: In this paper, the authors investigated the feasibility of combined heat-and-power (CHP) systems in supermarket buildings, and the results showed that a conventional CHP system may be practically applied.

TL;DR: In this article, the authors analyse which kinds of public planning, regulation and initiatives are suitable for the implementation of energy-conservation policies in Denmark, which is important elements of the Danish plans for implementing CO 2 -reduction targets.

TL;DR: In this paper, air, land and water impacts for a proposed commercial-sized oil-shale integrated tri-generation system (OSITGS) are predicted, and a preliminary analysis of the processes incurred was conducted to determine the nature and expected rates of various effluent streams emerging from the OSITGS.

TL;DR: In this article, the authors proposed a "Biomass balance table" which shows systematically the flows of various biomass forms in the processes of harvest, conversion and consumption for food, timber and paper.

TL;DR: The study has shown that for 60-90% of remote sites, a PV decentralized electricity system is the most economical means of electrification.

TL;DR: In this paper, the authors developed scenarios for future energy use and CO2 emissions for the industrial sector in Lebanon and developed a baseline scenario based on available data on major plants' outputs, and on reported amounts of fuels used by industrial sector as a whole.

TL;DR: In this paper, a process for producing and controlling a tornado-like vortex and thereby concentrating the mechanical energy where it can be captured is proposed, compared with the solar chimney phenomenon which shares the same thermodynamic basis.

TL;DR: In this paper, the authors investigated the use of concentric light pipe and ventilation stack by constructing the light pipe using dichroic materials, the infrared part of the solar radiation is allowed to be transmitted to the stack but the visible light is guided by the lightpipe into a room.

TL;DR: In this paper, the characteristics of a rural society, outlines the relationship of rural energy supply and demand management, and discusses the interrelationship between energy and the environment utilization, and highlights some of the policies related to self-building, self-managing and self-using.

TL;DR: In this paper, the authors utilized monthly mean daily values of global solar-radiation and sunshine duration at 41 locations in Saudi Arabia and developed an empirical correlation for the estimation of the global solar radiation at locations where it is not measured.

TL;DR: In this article, a first and second-law procedure for the optimization of the reheat pressure level in reheat regeneration thermal-power plants is presented, which is general in form and is applied for a thermal power plant having two reheAT pressure levels and two open-type feedwater heaters.

TL;DR: Analyse des perspectives a moyen et a long terme du marche petrolier et etude de la nature des crises petrolieres afin de determiner la viabilite des energies renouvelables as mentioned in this paper.

TL;DR: In this paper, the authors used the early design model (EDM) which is a simplified steady-state design tool to take account of dynamic heat flows within the building, and determined the utilization factor using data obtained from a weighted zone-by-zone dynamic hour-byhour thermal analysis of solar energy absorption in a generic office building.

TL;DR: In this paper, an analysis of 250 boiler thermal-balance test certificates and 6 field visits in three provinces has shown that boilers with efficiencies of less than 70% account for 75% of the total boiler population, the main causes of the low efficiencies are high excess air and unburned carbon in the slag and fly ash.