• Thermodynamic and Heat Transfer Evaluation of Pocket ...

    the paper machine drying section based on the mass and energy balance relationships written for paper, steam, moisture and cylinder dryer [19-21]. The simulation models can be utilized to evaluate the energy efficiency and heat recovery performance in the drying section of paper machines. Sivill et .

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  • GUIDELINES FOR Cleaning and Conditioning Paper Machine ...

    Optimum felt and press section runnability depends on maintaining "like-new" felt characteristics for a longer period of time. This can only be accomplished with an effective conditioning program. The type and use of a felt conditioning system has a pro-found effect on the runnability of the felt and the press section of the paper machine.

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  • Optimizing the cost efficiency for internal sizing of ...

    press nip. After the pressing section, the paper enters the drying section, which passes the paper over several steam-heated cylinders to cause evaporation of the remaining water. The finished paper leaving the drying section has a dry content of around 90% and is collected in large paper rells called tambours.

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  • Exergy Assessment of Recovery Solutions from Dry and Moist ...

    In this paper, the challenge was to discern suitable recovery solutions facing resource specificities and their thermodynamic constraints, in order to minimize the overall exergy destruction, i.e., to move up the exergy efficiency of the entire system.

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  • Book 9 Papermaking Part 2, Drying

    79 Multicylinder dryer and drying concepts 3.4.3 between press and drying sections .....95Closed draw 3.4.4 .....96Ropeless tail threading through drying section

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  • Exergetic analysis of a continuous Bi-axially Oriented ...

    By using exergy analysis method, the magnitudes and locations of exergy destructions (irreversibilities) in the whole system are identified, while potential for energy efficiency improvements is introduced (Hancioglu and Hepbasli, 2007). In the literature, numerous studies on energy and exergy .

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  • Book 9 Papermaking Part 2, Drying

    79 Multicylinder dryer and drying concepts 3.4.3 between press and drying sections .....95Closed draw 3.4.4 .....96Ropeless tail threading through drying section

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  • Energy Efficiency Improvement and Cost Saving ...

    The U.S. pulp and paper industry—defined in this Energy Guide as facilities engaged in the manufacture of pulp, paper, and paperboard—consumes over $7 billion worth of purchased fuels and electricity per year. Energy efficiency improvement is an important way to reduce these costs and to

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  • Optimization of water removal in the press section of a ...

    Abstract. An optimization problem regarding water removal in the press section of a paper machine is considered in this work. The proposed model tries to minimize a cost function comprising the replacement of the felts in the press section, the cost of energy to operate the press and the cost of energy in the drying section, while satisfying the constraints of water mass balance in the process.

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  • Organic Rankine Cycle Configurations

    The exergy and the exergetic efficiency provide a useful tool for comparison between cycles. The exergeticefficiency is the ratio of the plant output to the maximum theoretical output at the plant conditions. The exergy is defined by the following expression: e = h – h o - T o(S – S o) (DiPippo – 1984) where: e is the specific exergy

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  • APV Dryer Handbook

    short drying times. Batch type fluidized bed dryers have, therefore, superseded forced convection units in many cases – notably in the drying of pharmaceuticals and for the processing of certain thermoplastics. These machines generally are available in a range of standard sizes with batch capacities from 50 .

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  • INCREASING THE DRYING EFFICIENCY OF CYLINDER DRYING

    Increasing the drying efficiency of cylinder drying Jyväskylä: University of Jyväskylä, 2011 JYFL Research report 14/2011, Department of Physics, University of Jyväskylä ISBN 978-951-39-4589-3 (paper copy) ISBN 978-951-39-4590-9 (pdf) ISSN 0075-465X This PhD Thesis concentrates on paper drying: first on the drying rate in a

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  • GUIDELINES FOR Cleaning and Conditioning Paper Machine ...

    Optimum felt and press section runnability depends on maintaining "like-new" felt characteristics for a longer period of time. This can only be accomplished with an effective conditioning program. The type and use of a felt conditioning system has a pro-found effect on the runnability of the felt and the press section of the paper machine.

    Get price
  • Trends in Austrian Resource Efficiency: An Exergy and ...

    The improvement in the efficiency with which fuel exergy is converted into useful work by machines has far exceeded the conversion efficiency within human bodies. A major trend is the electrification of the economy, with 45% (99 PJ) of all useful work supplied in 2012 by electrical devices.

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  • Full article: Drying of paper: A review 2000–2018

    Apr 04, 2019· Introduction. Worldwide about 410 million tons of paper were produced 2016 [] and notwithstanding the internet era is still increasing year by year. Drying of the paper (printing paper, board, and tissue) is a major step on the paper producing machine requiring large amounts of energy and setting high demands on the quality for the produced paper grades.

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  • Papermaking PAPERMACHINE – PRESSING 1. INTRODUCTION

    the structure and runnability of the paper and thus the operating efficiency of the machine (Wahlstrom, 1969). The dewatering capacity of a press section and the properties of paper depend on the design and the number of nips. The risk of web breaks is determined by the general design of press section and the arrangement of open draws if any.

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  • EXERGY - ORC Generating electricity from low-medium ...

    Organic Rankine Cycle (ORC) systems are used for power production from low to medium temperature heat sources in the range of 80 to 350 °C and for small-medium applications at any temperature level. This technology allows for exploitation of low-grade heat that otherwise would be wasted. The working principle of an Organic Rankine Cycle power plant is similar to the most widely used process ...

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  • Full article: Drying of paper: A review 2000–2018

    Apr 04, 2019· Introduction. Worldwide about 410 million tons of paper were produced 2016 [] and notwithstanding the internet era is still increasing year by year. Drying of the paper (printing paper, board, and tissue) is a major step on the paper producing machine requiring large amounts of energy and setting high demands on the quality for the produced paper grades.

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  • EXERGY, POWER AND WORK IN THE US ECONOMY, 1900-1998

    It is usual to define several kinds of exergy, including mechanical exergy, thermal exergy and chemical exergy [Szargut et al 1988]. The first two are more familiarly known as kinetic energy and heat, respectively. They are of interest mainly in mechanical engineering (e.g. machine design). The third is of interest in chemical

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  • Exergy analysis of a production process of Fischer-Tropsch ...

    For the standard process, the rational efficiency (defined as exergy content of the Fischer-Tropsch products divided by the exergy content of all input materials, heat and work) amounts to 51.2%. This can be subdivided between 38.5% for the liquids and 12.7% for the tail gases. The exergetic content of

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  • Exergoeconomic Analysis of Corn Drying in a Novel ...

    The average exergy rate for dehydrating the moisture from the corn kernel is 345.22 kW and the exergy efficiency of the drying chamber ranges from 14.81% to 40.10%. The average cost of producing 1 GJ exergy for removing water from wet corn kernels is USD 25.971, while the average cost of removing 1 kg water is USD 0.159.

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  • Energy and exergy analyses and thermo-economic ...

    The results showed that exergy efficiency of the system slowly decreases when ground temperature rises. Moreover, increase in ground temperature reduces exergy efficiency. Dickinson et al. [ 22 ] investigated the economic and environmental optimization of integrating ground source energy system for the buildings.

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  • Corrugated Technical Overview - Cristini

    in the traction section (or cold section). Advantages: • Excellent air movement around the board while in contact with the hot plates. Disadvantages: • Operators can easily get burned by accidental contact with hot plates during the thread in of the paper. • Direct contact between pressure shoes and board can cause streaks in the

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  • Are We Missing Energy Savings in Clothes Dryers?

    energy consumption. Section V presents recommendations for saving energy while drying clothes. This includes recommendations for consumers, manufacturers, efficiency advocates, and governmental policy. Dryer Operation The components and construction of dryers are described in .

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  • Trends in Austrian Resource Efficiency: An Exergy and ...

    The improvement in the efficiency with which fuel exergy is converted into useful work by machines has far exceeded the conversion efficiency within human bodies. A major trend is the electrification of the economy, with 45% (99 PJ) of all useful work supplied in 2012 by electrical devices.

    Get price
  • Fulton Systems

    Paper Machine Drying Section Performance Audits Fulton Facts No. 1: Venting Costs Thermocompressor Efficiency & Performance Paper Thermocompressors Love 'em or hate 'em Paper Fulton Systems Engineered Equipment Thermocompressors Brochure Thermocompressors Out of Sync Brochure Condensers Brochure Desuperheater Brochure Separator Modules Brochure

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  • Fulton Systems

    Paper Machine Drying Section Performance Audits Fulton Facts No. 1: Venting Costs Thermocompressor Efficiency & Performance Paper Thermocompressors Love 'em or hate 'em Paper Fulton Systems Engineered Equipment Thermocompressors Brochure Thermocompressors Out of Sync Brochure Condensers Brochure Desuperheater Brochure Separator Modules Brochure

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  • EXERGY ANALYSIS OF A BAKERY STOVE

    Exergy analysis of a bakery stove, carried out with the use of exergy balance of this object was presented in the paper. With the use of balance data, assessment of internal and external exergy losses during baking process in the four-chamber cyclometric stove, used for baking a wide assortment of bakery products, was carried out.

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  • Trends in Austrian Resource Efficiency: An Exergy and ...

    The improvement in the efficiency with which fuel exergy is converted into useful work by machines has far exceeded the conversion efficiency within human bodies. A major trend is the electrification of the economy, with 45% (99 PJ) of all useful work supplied in 2012 by electrical devices.

    Get price
  • Benchmarking energy use in the paper ... - Energy Efficiency

    Jul 13, 2012· The production of paper and board is an energy intensive process. With an energy use of 6.4 EJ in 2005, the pulp and paper industry was responsible for about 6 % of the world's total industrial energy consumption (International Energy Agency (IEA) 2008), being the fourth largest industrial energy user worldwide.Energy prices rose drastically from 2005 until 2008 by around 40 % on average in ...

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  • exergyyyyy.pdf | Exergy | System

    Abstract: This thesis demonstrates the usefulness of the exergy concept for analyzing systems which convert energy, material and/or information, e.g., a society or an industrial process. The first paper, Exergy – a Useful Concept within Resource Accounting, deals with the theory of exergy in a new and simple way.Exergy is applied to matter, is related to other thermodynamic potentials and to ...

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  • Roll covers in the paper machine Press section

    Voith Paper can optimize dewatering with appropriate roll cover surface design by means of a specific nip calculation program. It has proven significant success, such as an increase in dry content and machine speed and elimination of shadow markings. Modern press section

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Founded in 1982, Dekelon Paper Making Machinery Co.,Ltd. has always striven to meet and exceed customer expectations and continue to update and improve...

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