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Bongers, C.C.W.G. (author), de Korte, J.Q. (author), Zwartkruis, M. (author), Levels, K. (author), Kingma, B.R.M. (author), Eijsvogels, T.M.H. (author)The combination of an exacerbated workload and impermeable nature of the personal protective equipment (PPE) worn by COVID-19 healthcare workers increases heat strain. We aimed to compare the prevalence of heat strain symptoms before (routine care without PPE) versus during the COVID-19 pandemic (COVID-19 care with PPE), identify risk factors...article 2022
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Efficiency of three cooling methods for hyperthermic military personnel linked to water availabilityKlous, L. (author), van Diemen, F. (author), Ruijs, S. (author), Gerrett, N. (author), Daanen, H. (author), de Weerd, M. (author), Veenstra, B. (author), Levels, K. (author)Purpose: Three feasible cooling methods for treatment of hyperthermic individuals in the military, that differed considerably in water volume needed (none to ~80 L), were evaluated. Methods: Ten male soldiers were cooled following exercise-induced hyperthermia (rectal temperature (Tre) ∼39.5 °C) using ventilation by fanning (1.7 m s−1),...article 2022
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Dorenkamper, M.S. (author), Wahed, A. (author), Kumar, A. (author), de Jong, M. (author), Kroon, J. (author), Reindl, T. (author)An enormous area could potentially be unlocked, when more photovoltaic (PV) systems would be deployed on water bodies. Especially in densely populated areas this opens a pathway for PV to contribute to the energy transition in a large scale. Another potential benefit of floating PV (FPV) systems is that they can outperform conventional PV...article 2021
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de Korte, J.Q. (author), Bongers, C.W.G. (author), Catoire, M. (author), Kingma, B.R.M. (author), Eijsvogel, T.M.H. (author)Cooling vests can alleviate heat strain. We quantified the perceptual and physiological heat strain and assessed the effects of wearing a 21°C phase change material cooling vest on these measures during real-life work shifts of COVID-19 nurses wearing personal protective equipment (PPE). 17 nurses were monitored on two working days, consisting...article 2021
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Sapounas, A. (author), Katsoulas, N. (author), Slager, A.A. (author), Bezemer, R.A. (author), Lelieveld, C.M.J.L. (author)Several greenhouse energy saving technologies and management strategies have been developed in order to meet the needs for implementation of production systems with low and efficient energy use and low CO2 emissions. Towards this aim, a number of greenhouse concepts that make use of these technologies have been developed and tested, such as the...article 2020
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Shkatulov, A. (author), Joosten, R. (author), Fischer, H. (author), Huinink, H. (author)The advent of thermochemical energy storage (TcES), that is, storage of thermal energy by means of reversible chemical reactions, incites finding pathways of stabilization of thermochemical materials for thermal batteries of the future. Currently, salt hydrates such as LiCl·H2O, CaCl2·6H2O, and SrBr2·6H2O are being actively studied for TcES in...article 2020
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Verlaan, A.L. (author), Giesen, P.T.M. (author), van Grol, P. (author), Limpens, M. (author), Heijmans, J.A.C. (author), Visser, H. (author), Vink, H.J.P. (author), Maniscalco, M.P. (author), Verhoeff, P. (author), O'Neill, R. (author), Smith, M. (author), Stratton, B. (author), Gattuso, A. (author), Smiley, M. (author), Lasnier, C.J. (author), Feder, R. (author), Vasquez, J. (author), LeSher, M. (author)The Upper port Wide Angle Viewing System (UWAVS) is diagnostic system that provides visible light and InfraRed images of the divertor area in the ITER tokamak. The main functions of the UWAVS are to provide divertor wall and plasma luminance and temperature distributions at high spatial resolution (3–5 mm) and frame rates (500–1000 Hz) for...article 2018
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Hunicz, J. (author), Mikulski, M. (author)Low-temperature combustion in reciprocating engines appears to be a cutting-edge technology which ensures extremely low emissions of nitrogen oxides and particulate matters in parallel with high fuel efficiency. This mode of combustion can be realized in homogeneous charge compression ignition engines. However, this technology poses challenges,...article 2018
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Oudenhuijzen, A.J.K. (author), Erich, S.J.F. (author), Gjaltema, C. (author), Bakkers, E. (author)The objective of the National Technology project ReSpire is to develop a personal cooling system for soldiers. The aim is to enhance the soldiers sweat efficiency using a stream of air ventilating around the soldier’s torso. This document describes the design of the cooling system. Several attempts to develop cooling systems are discussed first....report 2017
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Li, W.W. (author), Radacsi, N. (author), Kramer, H.J.M. (author), van der Heijden, A.E.D.M. (author), ter Horst, J.H. (author)When applied to a pure component suspension in an apolar solvent, a strong inhomogeneous electric field induces particle movement, and the particles are collected at the surface of one of the two electrodes. This new phenomenon was used to separately isolate two organic crystalline compounds, phenazine and caffeine, from their suspension in 1,4...article 2016
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Klop, W.A. (author), Verlaan, A.L. (author)The CHEOPS mission (CHaracterising ExOPlanet Satellite) is dedicated to searching for exoplanetary transits by performing ultra-high precision photometry on bright stars already known to host planets. A 32cm diameter on-axis Ritchey-Chrétien telescope is used for imaging onto a single cooled detector. With integration times up to 48 hours the...conference paper 2016
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van Dijk, H.A.L. (author), Spiekman, M.E. (author), Hoes-van Oeffelen, E.C.M. (author)EN ISO 52016-1 presents a coherent set of calculation methods at different levels of detail, for the (sensible) energy needs for the space heating and cooling and (latent) energy needs (de)humidification of a building and/or internal temperatures and heating and/or cooling loads, including the influence from technical buildings systems, control...article 2016
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Bogerd, C.P. (author), Aerts, J.M. (author), Annaheim, S. (author), Bröde, P. (author), de Bruyne, G. (author), Flouris, A.D. (author), Kuklane, K. (author), Sotto Mayor, T. (author), Rossi, R.M. (author)The thermal effects related to wearing headgear are complex and different studies have investigated single parts of this topic. This review aims at summarizing the different findings to give a complete overview on this topic as well as to suggest new perspectives. Headgear increases head insulation and therefore is mainly problematic under warm...article 2015
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Bakker, L.G. (author), Hoes-van Oeffelen, E.C.M. (author), Hordijk, G.J. (author), van de Ham, E.R. (author)Overheating in buildings is an increasingly important issue. Various studies show that local personalized cooling can substantially improve comfort levels while saving energy. Airflows are an efficient approach for local cooling. Fluctuating airflows seem more effective and are potentially perceived more comfortable compared to continuous...conference paper 2015
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Revel, G.M. (author), Martarelli, M. (author), Emiliani, M. (author), Gozalbo, A. (author), Orts, M.J. (author), Bengochea, M.T. (author), Guaita Delgado, L. (author), Gaki, A. (author), Katsiapi, A. (author), Taxiarchou, M. (author), Arabatzis, I. (author), Fasaki, I. (author), Hermanns, S. (author)The paper describes the methodology followed for the development of new cool products in order to widen the range of existing solutions both including coloured (even dark) materials and extending the application also to building vertical components. Cool coloured ceramic tiles and acrylic paints for façades and roof membranes have been developed...article 2014
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Teunissen, L.P.J. (author), Wang, L.C. (author), Chou, S.N. (author), Huang, C. (author), Jou, G.T. (author), Daanen, H.A.M. (author)Firemen often suffer from heat strain. This study investigated two chest cooling systems for use under a firefighting suit. In nine male subjects, a vest with water soaked cooling pads and a vest with water perfused tubes were compared to a control condition. Subjects performed 30 min walking and 10 min recovery in hot conditions, while...article 2014
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Revel, G.M. (author), Martarelli, M. (author), Emiliani, M. (author), Celotti, L. (author), Nadalini, R. (author), Ferrari, A.D. (author), Hermanns, S. (author), Beckers, E. (author)Cool materials have a large potential as cost-effective solution for reducing cooling energy consumption in hot summer and mild winter regions like Mediterranean countries. A previous paper has described in detail the development of cool coloured ceramic tiles, acrylic paints and bituminous membranes for the building envelope taking into account...article 2014
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- Levels, K. (author) doctoral thesis 2014
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Reus, M.A. (author), Hoetmer, G. (author), van der Heijden, A.E.D.M. (author), ter Horst, J.H. (author)Concomitant crystallization leads to process intensification through the synergistic combination of the partial processes of particle formation and encapsulation within a single process step. Both cooling and electrospray crystallization in multi-component solutions were used to create (sub-)micron sized particles of different crystalline...article 2014
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Ye, H. (author), Mihailovic, M. (author), Wong, C.K.Y. (author), van Zeijl, H.W. (author), Gielen, A.W.J. (author), Zhang, G.Q. (author), Sarro, P.M. (author)High Power Light Emitting Diode (HP LED) is one of the promising candidates for future lighting systems with efficient energy consumption. However, around 70% of the input power will be still transferred to heat. Recently, to obtain more light output, the increased electrical currents consequently cause more significant heat. To solve the...article 2013