waste heat Articles

  • Exergetic performance of eco friendly absorption heat transformer for seawater desalination

    Vapour Absorption Heat Transformers (VAHT) have shown good potential for upgrading waste heat to useful temperature levels. VAHT can be effectively coupled with Multi Effect Desalination (MED) systems for water purification. In this study an exergetic analysis is carried out for VAHT integrated with MED. A simulation model has been developed to evaluate the exergetic efficiency, exergy losses in ...


    By Inderscience Publishers

  • Market versus planning failures: the case of the German heating sector

    One major reason for the waste of resources is market failures. Another important reason is planning failures in governmental interventions that exactly aim at the alleviation of these market failures. In this paper, we will illustrate, by way of example, how these failures may interact. Furthermore, we present a way out from the illustrated example's dilemma which results from the German ...


    By Inderscience Publishers

  • Low grade heat utilisation for seawater desalination by the HTTF process

    To improve heat transfer efficiency, Horizontal Tube Thin Film (HTTF) evaporators are being used in multieffect desalination plants. These plants require less pumping energy than thermal-based desalination plants. To generate the design data, experimental studies were carried out in a single-tube HTTF experimental setup, and heat transfer correlations were developed at BARC. The experimental ...


    By Inderscience Publishers

  • Landfills case study: Space heating with LFG: Small project-big savings

    On a typical January morning in Minnesota, a landfill operator is working on the compactor’s transmission. Despite the four inches of snow on the ground, he opens the garage doors in the maintenance building to let out some of the excess heat. Unlike previous winters, this year the operator can afford to crank up the heat in the building while working on equipment because the heat is being ...


    By Waste Advantage Magazine

  • Class a biosolids production at eastern municipal water district using heat pasteurization

    Since 1998, the Eastern Municipal Water District (District) has developed and successfully operated a heat pasteurization facility to treat extended aeration waste activated sludge (WAS) from the Perris Valley Regional Water Reclamation Facility (PVRWRF). The treatment train uses hot water to sludge spiral heat exchangers and a patented continuous-feed, complete mix pasteurization vessel (heated ...


  • Heat Pump Used to Drain Contaminated Sludge in a Steel Factory

    Summary In 1987, new regulations required that factories dispose of their contaminated water and waste themselves. Making galvanised steel wire, the Stelfil factory produces sludge contaminated with lead and zinc. Stelfil spent thousands of dollars to bury this waste and evaluated three systems to remove most of the water: a gas dryer, an induction heated screw conveyor and a heat pump system. ...


  • Heat recovery and energy efficiency, improves profitability and reduces CO footprint

    Using latest technology in combustion of oil and gas can provide significant savings in overall energy consumption. Modern oxygen control that compensates changes in ambient temperature and fuel qualities can increase energy efficiency up to 3%. By adding the usage of hot combustion air another 2-3% can be saved. Modern burner technology without mechanical linkage, operating with accurate ...


    By Oilon Oy

  • Combined heat & power is a clean, efficient and economic energy solution

    The 21st century has highlighted a need for clean, efficient and economic energy, which has put Combined Heat & Power (CHP) into the limelight. By providing on-site power generation, waste heat recovery and system integration, CHP offers a realistic, near-term solution for exceptional energy efficiency and emission reduction. CHP systems can generate electricity locally while they recover ...


    By Shenton Group

  • Coupled Heat and Moisture Flow in Unsaturated Swelling Clay Barriers

    The main thermodynamic forces active in the near field of a nuclear fuel waste multiple barrier system during the unsaturated stage are the gradients of temperature, fluid pressure, and chemical potentials. The processes that have a direct impact on the transport mechanism of heat and moisture within the clay-based compacted buffer material are coupled. The major problems in describing coupled ...


    By ASTM International

  • Eco-Friendly Thinking: Heating Your Home and Water With Biomass Fuel and Appliances

    With today’s struggles with carbon footprints, pollution, and finite energy sources, people are becoming more environmentally conscious. And if you’re thinking of transforming your home into a more eco-friendly structure, there’s a lot to consider. If you want to stray from your oil, gas, or electric heating system, consider investing in a biomass heating ...


    By Uzelac Industries, Inc

  • Reduction of ammonia emissions during composting by Uncoupling of oxygen demand and heat removal

    Intensive pig production systems result in high emissions of ammonia, odour and greenhouse-gases (methane and laughing gas) by exhaust ventilation air. Moreover, large amounts of manure (faeces and urine) are produced with insufficient nearby land for applications (Imbeath, 1998). These outputs lead to environmental problems related to ...


    By ORBIT e.V.

  • VacuDry Indirect heated vacuum thermal Desorption by econ industries - case study

    With the VacuDry8 technology the energy-efficient treatment of hazardous and industrial waste as well as contaminated soil, oil sludge and secondary raw material is realized. Controlled vacuum and heat are used to separate minerals from oil, solvents, mercury and other hazardous substances.    At the core of the econ VacuDry8 process is a specially designed dryer chamber which ...


    By econ industries GmbH

  • Timing is everything - Getting your heat network plan to work

    For affordable housing providers, maintaining heating and hot water supplies to residents is one of the biggest challenges; especially when it comes to frequently involving the care of vulnerable user groups, and routinely gaining access to occupied properties.  Although communal heating schemes (featuring shared boiler plant or other more sustainable heat sources) can offer significant ...


    By Switch2 Energy Limited

  • Replacement of Salt Baths with Fluidised Bed Furnaces: Quality Heat Treatment

    Quality Heat Treatment has developed a fluidised bed heat treatment technology which replaces the older molten salt technology. This eliminates concerns about disposal of cyanide salts and workplace safety issues that are associated with the molten salt technology. A payback period of approximately two years is expected on an average sized facility costing approximately $200,000. ...


  • Treating organic waste with Cambi THP

    ABSTRACT This paper describes how the Cambi Thermal Hydrolysis Process (THP) treats biodegradable organic waste and converts it to renewable energy and pathogen-free and bio-fertilizer. The interest for the process is expected to increase due to new environmental legislation as well as increasing demand for renewable energy. The implementation of the European Landfill Directive 1999/31EC and the ...


    By Cambi Group AS

  • Combustion Of Heavy Fuels And Liquid Wastes

    This paper describes the design and operating conditions of liquid and gas combustors for heavy fuels and liquid wastes. Lower fuel prices can be achieved by switching from light oil to heavy ones, or combining with unconventional waste fuels. Unconventional waste fuels such as energetic off gases and organic liquid waste require especially designed combustion equipment like a special combustor ...

  • Wasting energy through steam loss

    The European Union Directive on the Energy Performance of Buildings, which relates to all member nations of the European Union, are obliged to set limits on greenhouse gas emissions, particularly from buildings. Typically steam is used for a wide range of applications within larger establishments including, humidification, hot water, space heating and air heating.  Primary energy losses in ...

  • Renewable energy from food wastes

    Food waste is an untapped energy source that mostly ends up rotting in landfills, thereby releasing greenhouse gases into the atmosphere. Food waste is difficult to treat or recycle since it contains high levels of sodium salt and moisture, and is mixed with other waste during collection. Major generators of food wastes include hotels, restaurants, supermarkets, residential blocks, cafeterias, ...


    By Waste Advantage Magazine

  • The Plasma Processing of Steel Plant Wastes

    ABSTRACT: Electric arc furnace (EAF) dusts, have been successfully treated in plasma-fired carbothermic reduction furnaces to recover metal values. Although the technology is equally applicable across the range from plain carbon to stainless steels, historically, it is the latter that has been the more commercially successful. Because the plasma heat source is independent of process chemistry, ...

  • New solid waste definition proposed

    When the Boiler MACT rule was vacated in 2007, one key element in the court challenge was that many non-fossil fuel materials burned in industrial boilers should be classified as solid wastes and regulated accordingly. Along with the recently proposed Boiler MACT and rules for commercial/industrial/solid waste incinerators (CISWI), EPA proposed criteria to determine whether non-hazardous ...


    By Trinity Consultants

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