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- van Boxtel, A.J.B. (author), Boon, M.A. (author), van Deventer, H.C. (author), Bussmann, P.J.T. (author) bookPart 2014
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Jin, X. (author), van der Sman, R.G.M. (author), van Maanen, J.F.C. (author), van Deventer, H.C. (author), van Straten, G. (author), Boom, R.M. (author), van Boxtel, A.J.B. (author)In this work, the Flory Huggins Free Volume theory is used to interpret the sorption isotherms of broccoli from its composition and using physical properties of the components. This theory considers the mixing properties of water, biopolymers and solutes and has the potential to describe the sorption isotherms for varying product moisture...article 2014
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Nieuwland, M. (author), Geerdink, P. (author), Brier, P. (author), van den Eijnden, P. (author), Henket, J.T.M.M. (author), Langelaan, M.L.P. (author), Stroeks, N. (author), van Deventer, H.C. (author), Martin, A.H. (author)Developing non-meat food products with an appealing structure is a challenge. In this study, we investigate the possibility to produce thin fibrils as building blocks for texturally interesting meat replacers. The technique applied is electrospinning - a technique which produces thin fibrils with a high aspect ratio. The spinning of proteins is...article 2014
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van Deventer, H.C. (author), Houben, R.J. (author), Koldeweij, R.B.J. (author)A new atomization nozzle based on ink jet technology is introduced for spray drying. Application areas are the food and dairy industry, in the first instance, because in these industries the quality demands on the final powders are high with respect to heat load, powder shape, and size distribution. The ink jet nozzles can atomize fluids with a...article 2013
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Atuonwu, J.C. (author), van Asselt, C.J. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)This work presents an approach to compute dryer energy efficiency using air flowrate step responses and establish a link between drying energy efficiency and process controllability. The approach is based on the temperature drop between the dryer inlet and outlet air under adiabatic conditions and so decouples water evaporation from heat loss...article 2013
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Atuonwu, J.C. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)This work analyzes the synergy between two complementary unit operations - adsorbent dehumidification and drying - and presents a mixed integer nonlinear programming approach to optimize energy performance in a two-stage system. Combined with active constraint analysis, the adsorbent properties that promote energy performance are derived....article 2013
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Atuonwu, J.C. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)This work establishes a relationship between dryer energy performance and controllability using energy balances and process resiliency analysis. It is shown that using the process gain matrix, the dryer energy efficiency can be reliably calculated with conditions for simultaneous controllability improvement established. By incorporating a drying...article 2013
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Nieuwland, M. (author), Geerdink, P. (author), Brier, P. (author), van den Eijnden, P. (author), Henket, J.T.M.M. (author), Langelaan, M.L.P. (author), Stroeks, N. (author), van Deventer, H.C. (author), Martin, A.H. (author)Developing non-meat food products with an appealing structure is a challenge. In this study, we investigate the possibility to produce thin fibrils as building blocks for texturally interesting meat replacers. The technique applied is electrospinning—a technique which produces thin fibrilswith a high aspect ratio. The spinning of proteins is...article 2013
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- van Boxtel, A.J.B. (author), Boon, M.A. (author), van Deventer, H.C. (author), Bussmann, P.J.T. (author) bookPart 2012
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Atuonwu, J.C. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)This work presents a mixed integer nonlinear programming (MINLP) formulation for the design of energy-efficient multistage adsorption dryers within constraints on product temperature and moisture content. Apart from optimizing temperatures and flows, the aim is to select the most efficient adsorbent per stage and product to air flow...article 2012
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Atuonwu, J.C. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)This work presents a mixed integer nonlinear programming method for the design of energy efficient multistage adsorption dryers within product temperature and moisture constraints. The aim is to find the adsorbent type and properties that minimize specific energy consumption. The results show that the adsorbents chosen in each stage have highest...article 2012
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Atuonwu, J.C. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)This work shows from energy balances and process resiliency analysis, the relationship between dryer controllability and energy performance. It is shown that using the process gain matrix, the dryer temperature drop and hence, energy efficiency can be reliably calculated. Conditions necessary for simultaneous energy efficiency and...bookPart 2012
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TNO Kwaliteit van Leven (author), Atuonwu, J.C. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)This work studies the controllability of heat-integrated zeolite adsorption dryers. Mean product moisture content, temperature and vitamin C concentration (representative of product quality) are considered as controlled variables. Set-point tracking and disturbance rejection controllability metrics are considered in addition to energy...article 2012
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Atuonwu, J.C. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)Conventionally, energy-saving techniques in drying technology are sequential in nature. First, the dryer is optimized without heat recovery and then, based on the obtained process conditions, heat recovery possibilities are explored. This work presents a methodology for energy-efficient adsorption dryer design that considers sensible and latent...article 2011
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Optimizing energy efficiency in low temperature drying by zeolite adsorption and process integrationAtuonwu, J.C. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)Drying is an energy intensive process, with low efficiencies, particularly at low drying temperatures required for heat-sensitive products. This work presents an energy efficient method for drying heat-sensitive products based on drying air dehumidification by zeolites and process integration. Two optimization approaches are considered:...article 2011
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Atuonwu, J.C. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)Low-temperature drying is important for heat-sensitive products, but at these temperatures conventional convective dryers have low energy efficiencies. To overcome this challenge, an energy efficiency optimization procedure is applied to a zeolite adsorption dryer subject to product quality. The procedure finds a trade-off between the improved...article 2011
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- van Deventer, H.C. (author), van den Berg, R.W. (author), TNO Kwaliteit van Leven (author) article 2008
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- van Loon, W.A.M. (author), Linssen, J.P.H. (author), Legger, A. (author), Heijmans, R.M.H. (author), van Deventer, H.C. (author), Burgering, M.J.M. (author), van Drooge, B.L. (author), TNO Kwaliteit van Leven (author) article 2005
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van Deventer, H.C. (author), TNO Milieu, Energie en Procesinnovatie (author)This article deals with a feasibility study on superheated steam drying of paper and textile. Drying with superheated steam in direct contact with the paper or textile web offers great advantages over conventional ways of drying with respect to energy efficiency, drying rate and quality aspects. The evaporated water in this drying process comes...article 1997