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Pippia, T. (author), Lago, J. (author), Coninck, R.D. (author), Sijs, J. (author), Schutter, B.D. (author)In the context of building heating systems control in office buildings, the current state-of-the-art applies either a deterministic Model Predictive Control (MPC) controller together with a nonlinear model, or a linearized model with a stochastic MPC controller. Deterministic MPC considers only one realization of the external disturbances, which...conference paper 2019
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Gerrett, N. (author), Kingma, B.R.M. (author), Sluijter, R. (author), Daanen, H.A.M. (author)The Tokyo Olympics and Paralympic games in 2020 will be held in hot and humid conditions. Heat acclimation (in a climatic chamber) or heat acclimatization (natural environment) is essential to prepare the (endurance) athletes and reduce the performance loss associated with work in the heat. Based on the 1990-2018 hourly meteorological data of...article 2019
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Morabito, M. (author), Messeri, A. (author), Noti, P. (author), Casanueva, A. (author), Crisci, A. (author), Kotlarski, S. (author), Orlandini, S. (author), Schwierz, C. (author), Spirig, C. (author), Kingma, B.R.M. (author), Flouris, A.D. (author), Nybo, L. (author)Existing heat–health warning systems focus on warning vulnerable groups in order to reduce mortality. However, human health and performance are affected at much lower environmental heat strain levels than those directly associated with higher mortality. Moreover, workers are at elevated health risks when exposed to prolonged heat. This study...article 2019
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Rattazzi, D. (author), Rossi, I. (author), Magistri, L. (author), Erich, S.J.F. (author)This work aims to understand the potential of an innovative technology for solar energy harvesting in a District Heating Network (DHN). The considered technology is aesthetic solar façade thermal panel. In order to guarantee the temperatures required by a 3rd generation DHN (around 75°C), a Heat Pump, using as cold source the heat from the...conference paper 2019
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Scapino, L. (author), Zondag, H.A. (author), Diriken, J. (author), Rindt, C.C.M. (author), van Bael, J. (author), Sciacovelli, A. (author)Sorption technology has the potential to provide high energy density thermal storage units with negligible losses. However, major experimental and computational advancements are necessary to unlock the full potential of such storage technology, and to efficiently model its performance at system scale. This work addresses for the first time, the...article 2019
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Shkatulov, A.I. (author), Houben, J. (author), Fischer, H. (author), Huinink, H.P. (author)Thermochemical energy storage (TCES) is an emerging technology promising for domestic applications. Recently, K2CO3 was identified and studied as a TCES material. In this work, the composite “K2CO3 in expanded vermiculite” (69 wt. % of the salt) was prepared and studied for thermochemical energy storage bearing in mind its application for space...article 2019
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Sögütoglu, L.C. (author), Donkers, P.A.J. (author), Fischer, H.R. (author), Huinink, H.P. (author), Adan, O.C.G. (author)Thermochemical materials K2CO3, MgCl2 and Na2S have been investigated in depth on energy density, power output and chemical stability in view of domestic heat storage application, presenting a critical assessment of potential chemical side reactions in an open and closed reactor concept. These materials were selected based on a recent review on...article 2018
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Wesselink, M. (author), Liu, W. (author), Koornneef, J. (author), van den Broek, M. (author)High temperature aquifer thermal energy storage (HT-ATES) can contribute to the integration of renewable energy sources in the energy system, the replacement of fossil fuel-based heat supply and the utilization of surplus heat from industrial sources. However, there is limited understanding on the drivers, barriers and conditions of HT-ATES...article 2018
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Lamers, M.W.P.E. (author), Özkalay, E. (author), Gali, R.S.R. (author), Janssen, G.J.M. (author), Weeber, A.W. (author), Romijn, I.G. (author), van Aken, B.B. (author)In this paper we show the results from indoor and outdoor measurements on solar cells and modules, manufactured with different bifacial and monofacial cell architectures and encapsulated in different configurations. Reflection/transmission, IV and IQE spectra of single-cell laminates were measured and used to determine the energy spectra for all...article 2018
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Jacobs, P. (author)Frisse lucht zorgt voor een goede en diepere slaap. Dus bieden veel kinderdagverblijven de mogelijkheid om kleintjes buiten te laten slapen. Kan dat onder alle weersomstandigheden? En waar let je op als het bijvoorbeeld pijpenstelen regent of vriest dat het kraakt?article 2018
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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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van Lier, L.J. (author), Smeulers, J.P.M. (author)Pressure pulsations are an intrinsic feature of reciprocating compressor systems, that may lead to various issues. The API 618 standard is the most relevant guideline for pulsation and vibration control during the design stage. However, the main focus of API 618 is on pulsation effects in the field piping, and less on the pulsations close to the...conference paper 2018
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Li, H. (author), Meier, F. (author), Lee, X. (author), Chakraborty, T. (author), Liu, J. (author), Schaap, M. (author), Sodoudi, S. (author)Urban Heat Island (UHI) and Urban Pollution Island (UPI) are two major problems of the urban environment and have become more serious with rapid urbanization. Since UHI and UPI can interact with each other, these two issues should be studied concurrently for a better urban environment. This study investigated the interaction between the UHI and...article 2018
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de Jong, A.J. (author), Fischer, H. (author)Hygroscopic salts exhibiting fast and reversible hydration are promising systems for seasonal heat storage, providing the possibility of storing excess solar energy from the warm season for later use during the cold season. For heat storage, the salt is dehydrated with the available heat, and for heat recovery, the salt is rehydrated. There are...article 2018
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Gaeini, M. (author), Rouws, A.L. (author), Salari, J.W.O. (author), Zondag, H.A. (author), Rindt, C.C.M. (author)Thermochemical heat storage in salt hydrates is a promising method to improve the solar fraction in the built environment. The major concern at this stage is liquefaction followed by washing out of active material and agglomeration into large chunks of salt, thus deteriorating the diffusive properties of the porous salt hydrate structure. In...article 2018
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Jacobs, P. (author)Onze buitenlucht is schoner dan de lucht in woningen. Deze treurige constatering werd onlangs gedaan tijdens de 'Dag van de Binnenlucht', die werd georganiseerd door onder andere de VLA en Isso. Klopt het wel? We belden TNO-onderzoeker Piet Jacobs op om hem hierover aan de tand te voelen.article 2018
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Theelen, M. (author), Bakker, K. (author), Steijvers, H. (author), Roest, S. (author), Hielkema, P. (author), Barreau, N. (author), Haverkamp, E. (author)The levelized cost of electricity (LCOE) of photovoltaic (PV) systems is determined by, among other factors, the PV module reliability. Better prediction of degradation mechanisms and prevention of module field failure can consequently decrease investment risks as well as increase the electricity yield. An improved knowledge level can for these...article 2018
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- Seykens, X. (author), Kupper, F. (author), Mentink, P. (author), Ramesh, S. (author) article 2018
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Albers, N. (author), van Lier, L.J. (author), van der Biezen, M. (author)For a large new refinery project in the Middle East, the design and construction of a very large hydrogen compression unit was required. The compression unit design resulted in the requirement for six large reciprocating compressors operating in parallel, with a total installed electrical power close to 100 MW. The compressors have common...conference paper 2018
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Theelen, M.J. (author), de Graaf, F. (author), Daume, F. (author), Barreau, N. (author), Vroon, Z.A.E.P. (author), Zeman, M. (author)Degradation rates and mechanisms for molybdenum back contacts and ZnO:Al front contacts exposed to damp heat were obtained from literature and experiments. It was found that molybdenum back contacts with a higher density and covered by a MoSe2 film are more stable than their low density, bare counterparts. For ZnO:Al front contacts various...conference paper 2018