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Saturday, August 1, 2020 | History

2 edition of Comparison of model predictions and consumptive water use of closed cycle cooling systems found in the catalog.

Comparison of model predictions and consumptive water use of closed cycle cooling systems

Jerome B Strauss

Comparison of model predictions and consumptive water use of closed cycle cooling systems

by Jerome B Strauss

  • 23 Want to read
  • 6 Currently reading

Published by U.S. Environmental Protection Agency, Industrial Environmental Research Laboratory, National Technical Information Service [distributor in Research Triangle Park, NC, Springfield, Va .
Written in English

    Subjects:
  • Cooling towers -- United States -- Mathematical models,
  • Electric power-plants -- United States

  • Edition Notes

    Statementby Jerome B. Strauss ; prepared for U.S. Environmental Protection Agency, Office of Research and Development
    SeriesInteragency energy/environment R&D program report -- EPA-600/7-78-206, Research reporting series -- EPA-600/7-78-206
    ContributionsIndustrial Environmental Research Laboratory (Research Triangle Park, N.C.), Versar, Inc
    The Physical Object
    Pagination1 v. (various pagings) :
    ID Numbers
    Open LibraryOL13604451M

    The stability, low CPU overhead level (1%) and accuracy of the proposed CFD-embedded film-cooling model are demonstrated in the ETHZ steady film-cooled flat-plate experiment presented in Part I (Bernsdorf, Rose, and Abhari, , ASME J. Turbomach., , pp. –) of this two-part paper. The prediction of film-cooling effectiveness using   In this article, a mathematical model was developed that agrees with observed Global Mean Temperature Anomaly (GMTA), and its prediction shows global cooling by about deg C until Also, comparison of observed increase in human emission of CO2 with increase in GMTA during the 20 th century shows no relationship between the two. As a

    The growth of production from tight oil plays such as the Bakken and Eagle Ford has prompted public interest in understanding the greenhouse gas (GHG) emissions and freshwater consumption associated with these resources, specifically with regard to hydraulic fracturing and flaring. Therefore, we conducted a comprehensive life cycle assessment of Bakken crude, using thousands of data from XTO In IC engines, water injection, also known as Anti-Detonant Injection (ADI), is a method for cooling the combustion chambers of engines by adding water to the cylinder or incoming fuel-air mixture

    This investigation demonstrates the potential improvement in adiabatic film effectiveness that can be achieved through the use of mesh-fed surface slot film cooling. Mesh, or in-wall network, cooling is composed of fairly compact arrays of pedestals sized to fit within the limited wall thickness of //A-Study-of-Mesh-Fed-Slot-Film-Cooling. Generally, closed-loop pond cooling systems are the next biggest withdrawers of water, followed by towers, and finally dry cooling which uses minimal water for cooling purposes. This general declining trend of water withdrawal from once-through to dry cooling systems for each of the energy generation technologies can be seen in Fig. ://


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Comparison of model predictions and consumptive water use of closed cycle cooling systems by Jerome B Strauss Download PDF EPUB FB2

Get this from a library. Comparison of model predictions and consumptive water use of closed cycle cooling systems. [Jerome B Strauss; Industrial Environmental Research Laboratory (Research Triangle Park, N.C.); Versar, Inc.]   The cooling water system consists of the cooling tower, re-circulation system and heat exchanger network.

The cooling water used in the heat exchanger network returns to the cooling tower where the hot return cooling water is cooled ().Blowdown is necessary to avoid the build-up of undesirable materials in the re-circulating water as a result of :// A typical engine ‘cycle’ is defined in Fig.

It consists of a compression stroke (Fig. (a)), followed by a period of combustion close to top dead centre (tdc) (Fig. (b)) and then by expansion (Fig.

(c)).These two strokes form the power producing processes, but afterwards the products of combustion have to be replaced by fresh ://   A cooling coil dynamic model was obtained from a mass and energy balance of the air and water streams, resulting in first-order differential equations for the air and water temperature inside the cooling coil.

A model for a temperature sensor was developed using a first-order time delay :// Consider the cooling gas to be air and the liquid to be water; the Maisotsenko Cycle allows the product fluid to be cooled in temperature ideally to the dew point temperature of the incoming :// This tendency has prevailed over focusing on reducing water demand, e.g., by stemming the losses in transport and distribution systems, implementing adequate tariff systems, which seek to encourage lower water demand levels, changing water use technologies, and, generally, increasing the efficiency of water use in domestic, industrial, and   Life Cycle Water Footprints of Nonfood Biomass Fuels in China.

Environmental Science & Technology48 (7), DOI: /esj. Chao Zhang and Laura Diaz Anadon. Life Cycle Water Use of Energy Production and Its Environmental Impacts in :// The model result is in good agreement with experimental measurements. Further, for load cycles based on the NEDC two journeys, an hour urban and a half hour city to city journeys are considered, and the model predictions for the cell temperature are determined and :// The beginning of the combined cycle happens when the combustible gas reaches the gas turbine.

In Fig. to illustrate, this gas is biogas obtained through biomass processing, and the gas turbine is coupled to an electric energy the combustion of the air/gas mixture in the turbines results residual gases of high temperatures that generate high-pressure steam when they pass   The Electric Power Research Institute (EPRI) conducts research, development, and demonstration projects for the benefit of the public in the United States and internationally.

As an independent, nonprofit organization for public interest energy and environmental research, we focus on electricity generation, delivery, and use in collaboration with the electricity sector, its stakeholders and   Hybrid cooling is assumed to have water use that is on average 65% of closed-loop wet-tower cooling The current distribution of capacity over different water sources and cooling technologies was derived from the data presented by Byers et al.

() The diurnal cycle of East Asian summer monsoon precipitation simulated by the Met Office Unified Model at convection-permitting scales Strong overestimation of water‐use efficiency responses to rising CO2 in tree‐ring studies. A comparison of model predictions and observed :// This editorial provides a brief overview of the Special Issue “Modeling and Simulation of Energy Systems.” This Special Issue contains 21 research articles describing some of the latest advances in energy systems engineering that use modeling and simulation   Climate Change and Its Causes A Discussion About Some Key Issues Nicola Scafetta 1;2 1Active Cavity Radiometer Irradiance Monitor (ACRIM) Lab, Coronado, CAUSA 2Department of Physics, Duke University, Durham, NCUSA.

Abstract This article discusses the limits of the Anthropogenic Global Warming Theory advocated by the Intergov- Roughly 78% of the water footprint of agriculture is contributed by green water and 22% by blue water (i.e., evapotranspiration of irrigation water). Thus, globally, the consumptive use of blue water for irrigation accounts for – × 10 12 m 3 /year (Table 1), which is less than the global water withdrawals for agriculture (– @article{osti_, title = {Zeolite-water close cycle solar refrigeration; numerical optimisation and field-testing}, author = {Monnier, J B and Dupont, M}, abstractNote = {The availability of Solar Energy in sub-tropical countries together with the needs of cooling add up to develop a strong interest for simple solar-powered cold chamber ://   In the modern global economy, water and energy are fundamentally connected.

Water already plays a major role in electricity generation and, with biofuels and electricity poised to gain a significant share of the transportation fuel market, water will become significantly more important for transportation energy as well.

This research provides insight into the potential changes in water use PDF | Prinsloo, G.J., Dobson, R.T. Solar Tracking.

Stellenbosch: SolarBooks. ISBNp DOI: / Free | Find, read This work demonstrates (1) the potential for advanced thermoelectric systems in vehicle energy recovery and (2) the inherently complex interaction between thermal system performance and thermoelectric device optimization in energy :// Our approach comprises five main steps: (1) developing, validating, and calibrating a water simulation-optimization model for multiple water resource sectors in the contiguous United States (Sections and ), (2) specifying functions describing the benefits of water use for each water-using sector within the models (Section ), (3) projecting future climatic conditions under different.

@article{osti_, title = {Predictive Optimal Control of Active and Passive Building Thermal Storage Inventory}, author = {Henze, Gregor P and Krarti, Moncef}, abstractNote = {Cooling of commercial buildings contributes significantly to the peak demand placed on an electrical utility grid.

Time-of-use electricity rates encourage shifting of electrical loads to off-peak periods at night and   BARRIERS TO MODELING FOR RELIABLE ASSESSMENT OF BEST USE POLICIES. In seven of the adaptive-management planning cases previously mentioned, in which experimental management policies have not yet been implemented, the initial AEAM model development has been followed, instead, by very substantial and continuing investment in baseline information gathering and   The steep stepwise uptake of water vapor and easy release at low relative pressures and moderate temperatures together with high working capacities make metal–organic frameworks (MOFs) attractive, promising materials for energy efficient applications in adsorption devices for humidity control (evaporation and condensation processes) and heat reallocation (heating and cooling) by utilizing