compressed zero air Articles

  • Exergy analysis of natural gas/DME combustion in homogeneous charge compression ignition engines (HCCI) using zero–dimensional model with detailed chemical kinetics mechanism

    In the present work, a single zone combustion model with detailed chemical kinetics is developed to study the effect of dimethyl ether (DME) concentration on the combustion of natural gas from second law point of view in a homogeneous charge compression ignition (HCCI) engine. The code can predict all exergy terms in the cylinder with crank angle during a closed cycle. The chemical kinetics ...


    By Inderscience Publishers

  • Variable frequency drive energy saving on air compressors

    When we are looking for an innovative way to make its rotary-screw compressors more energy efficient and operator-friendly, they turned to Gozuk, Low-Voltage VFDs. In addition to supplying VFDs to control the speed and torque of the AF-series compressors, the Gozuk project team designed software to control the system pressure, air delivery, oil temperature and duty cycle directly from the VFD. ...


    By Variable Frequency Drives

  • New air quality rules challenge oil & natural gas industry

    EPA Administrator signed a suite of proposed new air regulations affecting both the Production/Processing and Transmission/Storage sectors of the oil and natural gas industry. The proposed rules mandate the use of emission controls as well as work practices through two different air regulatory programs – New Source Performance Standards (NSPS) and National Emissions Standards for Hazardous ...


    By Trinity Consultants

  • Air Powered Combustible Dust Vacuums More Economical and More Powerful than Electric Counterparts

    Compressed air vacs have significantly lower upfront cost and lower yearly maintenance costs that quickly surpass the expense of compressed air production. There is a prevailing perception in the industrial world, attributable to the higher costs associated with producing compressed air, that air powered explosion proof vacuums cost more to operate. According to David Kennedy, General Manager of ...


    By AirSys Technologies, Inc.

  • Gravity influence on the exergy balance

    New component of 'mechanical exergy' of substance, proposed earlier by Petela, is based on the difference of densities of the substance and the atmosphere. Application of this component does not fulfil the traditional exergy balance equation. Thus, additional equation term, called 'gravity input', is proposed here. The term, expresses the effect of gravity field on the considered process and is ...


    By Inderscience Publishers

  • How fire can be tamed

    Combustion dies at the interface between breathable air and macroscopic pieces of certain involatile fuels. If fed only them, in a compressed oxygen chamber, it makes an almost sunlike flame that cannot run wild. If upon dilution to manageable coolness the ash drops to the chamber bottom, and from there can be removed without the diluent, true harnessbrokenness is possible. Excess oxygen can be ...


    By Inderscience Publishers

  • Automated oxygen analyzer application systems- automatic oxygen controller improves efficiency of ultrasonic atomising of solder powder

    In the past most industrial solder pastes were made using oxidised powder produced by simple air atomisation. Pressure to improve the control of the size range of solder pastes, and to avoid the use of corrosive halide fluxes, has led to a demand for lower oxide levels. In addition increased use of automated oxygen analyzer application systems has led to much more critical specifications for ...


    By Systech Instruments Ltd

  • Field Detection of Chlorinated Alkenes in Well Water using the FROG-4000 Portable GC - Case Study

    Introduction Defiant’s FROG 4000, a portable GCPID system, was used to identify and determine the concentration of chlorinated alkenes in several extraction wells located in Tacoma Washington. Split samples were taken at each well and sent to an offsite lab for analysis. This case study examines the field exercise and highlights the high degree of agreement between the offsite lab and ...


    By Northern ANI Solutions Ltd.

  • Hand-Mix Case Study: SMR Soil Stabiliser Experience in Devon

    Success in the Use of Recycled Aggregate Despite being the Highway Authority with the largest U.K. network, (some 12900 km) and having reputedly one of the strictest Street Works regimes in England; Devon County Council have been very receptive to the correct use of SMR Soil Stabiliser by Utility Companies since its ...


    By SMR (UK) Ltd.

  • The Inconvenient Truth about Electric Vehicles

    Politicians and press are extolling the virtues of the electric vehicles (EV's) that are coming to market in 2011 and the Government provides a subsidy of £5,000 pe- car. It is said that EV's solve both the air quality and global warming issues. Well there is no doubt they are very good for local air aualitv. but what about reducinq C02 emissions? First, let's consider what an EV is ...


    By CNG Services Limited

  • Pressure Tank sizing

    Sizing a Pressure Tank with a CSV Cycle Stop Valves utilize a very small pressure tank. A 4.4 gallon size pressure tank is all you need for any size house.  “The larger the pressure tank the better”, is no longer true. Water does not come from the ...


    By Cycle Stop Valves, Inc.

  • Hydrogen Storage - Solution for an Intermittent Energy Source

    Storing solar energy through hydrogen versus traditional storage solutions Today, energy is either transmitted directly to the consumer through the grid or stored as backup power for future use via batteries, pumping water, etc. When it comes to solar and wind energy, it becomes extraordinarily difficult to take full advantage of the renewable sources using traditional methods of power ...


    By Verde LLC

  • Peristaltic Pumps play key role in rectifying the pH balance of mine water

    After decades of uncontrolled industrial (mining) activities, water supply is under serious threat. Studies show that acid water levels in the country's mines are rising at a staggering average rate of 0.59 m/day. The water situation is in fact threatening the population’s survival. At the heart of resolving this problem are the treatment of water and wastewater. This article looks at ...

  • A closer look at urban transport - TERM 2013: transport indicators tracking progress towards environmental targets in Europe

    Transport guarantees our mobility and access to goods. Moreover, the transport sector helps maintain and develop our societal and economic systems. Transport is also a main source of pressures on the environment, such as the unsustainable use of natural resources, as well as greenhouse gas, air pollutant and noise emissions. Many of these environmental problems are inter-linked, requiring ...

  • Is your Plant as tight as you think? Leak Detector for extremely toxic Gases, a Field Test Report

    Leak detection of commodity gases in chemical plants is a day-to-day practice. The sensor technology available for this application is field proven and reliable. No question about it, existing sensors will do the job. However, in plants manufacturing or handling extremely toxic substances, the picture is different. For example, take phosgene. The existing sensor technology for leak detection ...

  • Biogas in Asia

    The development of biogas production and monitoring has had many twists and turns, from its early days in Germany to the heady days of support through the Clean Development Mechanism (CDM).   The fall in the price of carbon credits, which rewarded reduction in emissions of methane (CH4) - a potent greenhouse gas - and use of methane from waste as renewable energy, has hit Asia ...


    By Geotech

  • Hurricane response emergency modeling with InfoWorks WS

    The island of Jamaica is located in the Caribbean Archipelago, 90 miles south of Cuba, 600 miles south of Florida and 100 miles south-west of Haiti. It has a population of 2.6 million, 800,000 of whom live in the metropolitan area of the capital, Kingston. The island is mountainous, with a distinct east-to-west ridge and a dramatic relief change in the east. Like the rest of the region, ...


    By Innovyze

  • Power Positive Resource Recovery

    Using laws of thermodynamic analysis to evaluate the energy and power characteristics of wastewater and beneficial uses of biogas offers greater insight into best business practices and what is achievable. Growing numbers of waste-water treatment plants (WWTP) are striving to produce more power onsite. In recent years, there’s even been a race among WWTP operators to see who can ...


    By BioCycle Magazine

  • Greening the Built Environment

    ASTM Standards and Products Form the Foundation of Sustainable Construction Efforts Today, a major focal point for the worldwide building industry is the growing demand for sustainable construction. Sustainable, or “green,” construction is focused on the more effective use of resources and ultimately the creation of healthier, energy efficient, more environmentally ...


    By ASTM International

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