Searched for: subject%3A%22HTFD%255C%2B%255C-%255C%2BHeat%255C%2BTransfer%255C%2B%2526%255C%2BFluid%255C%2BDynamics%22
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Hammink, H.A.J. (author)
Achter de gebouwen van TNO in Delft staat sinds vorig jaar het MEC-bouwlab van onderzoeksinstituut TNO. Wie het lab nadert, vallen twee dingen direct op. Ten eerste het gebouw zelf. Het fraaie ontwerp lijkt geinspireerd op een reagerbuisrekje. Ten tweede valt op dat het gebouw omgeven is door een groen grastapijt. Niet direct een plaats waar je...
article 2015
document
de Kluizenaar, Y. (author), de Jong, P. (author), Cornelissen, H.J.M. (author), van Vliet, M.R.A. (author)
Within the European project RETROKIT a systemic approach is being developed for retrofitting existing multi-family residential buildings. Modular combination of (semi-) prefabricated technological solutions will be demonstrated in three case studies. The part of the study described here aims to evaluate the consequences of the retrofit process...
conference paper 2015
document
Swamy, M. (author), Buijs, L.J. (author), Smeulers, J.P.M. (author)
Two screw compressors used for the recycling of waste gas showed high vibration in the discharge piping. To mitigate the vibration problems new silencers had to be designed. A great challenge was the large variation in operating conditions, especially the variation of the molecular weight of the gas. The silencer design consisted of resonators...
conference paper 2015
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Golliard, J. (author), Belfroid, S.P.C. (author), Vijlbrief, O. (author), Lunde, K. (author)
The flow-induced pulsations in corrugated pipes result from a feedback loop between an acoustic resonator and the noise amplification at each shear layer in the axisymmetric cavities forming the corrugations. The quality factor of the resonator is determined by the reflection coefficients at the ends of the corrugated pipe and by the damping in...
conference paper 2015
document
Jacobs, P. (author), Moons, A.M.M. (author)
In de literatuur zijn diverse blootstellingsmetingen naar endotoxinen gerapporteerd. Er is echter zeer weinig bekend over de bijbehorende deeltjesgrootteverdeling, wat voor de keuze van bijvoorbeeld de juiste filters voor de afvangst van stof en endotoxinen van groot belang is. Endotoxinen zijn celwandfragmenten van Gram-negatieve bacteriën,...
report 2015
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Havermans, J.B.G.A. (author), Houtzager, M.M.G. (author), Jacobs, P. (author)
The Netherlands Organization for Applied Scientific Research (TNO) was granted by ASHRAE (1306-RP) to conduct scientfic review and feasibility analysis of technologies and methods for measuring aircraft power system contaminants in the cabin air during unanticipated adverse incidents. In particular, the following specific objectives were...
article 2015
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Cekli, H.E. (author), Joosten, R.F.D. (author), van de Water, W. (author)
We stir wind-tunnel turbulence with an active grid that consists of rods with attached vanes. The time-varying angle of these rods is controlled by random numbers. We study the response of turbulence on the statistical properties of these random numbers. The random numbers are generated by the Gledzer-Ohkitani-Yamada shell model, which is a...
article 2015
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de Boer, J.P. (author), van der Linden, R.J.P. (author), Renes, W.A. (author)
Asphaltene agglomeration and deposition is a complex process, leading to progressive production losses without mitigative actions. Injection of asphaltenes inhibitors (solvents) in the tubing is a common practice to avoid deposition in production tubing. This does however not avoid deposition in the near-wellbore. Wells suffering from...
conference paper 2015
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Jacobs, P. (author)
Mensen zijn meer dan 90% van de tijd binnen. Echter, in tegenstelling tot buitenlucht, bestaan er geen wettelijke richtlijnen voor fijn stof voor de binnenlucht. Bovendien, zijn er momenteel geen eenvoudige meetprotocollen en richtlijnen beschikbaar waarnaar kan worden gerefereerd. Dit artikel beschrijft de achtergrond voor een nieuw...
article 2015
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Koene, F.G.H. (author), de Kluizenaar, Y. (author), Bulavskaya, T. (author), Hoes-van Oeffelen, E.C.M. (author), Spiekman, M.E. (author), Hofstetter, H. (author), Opstelten, I.J. (author)
Generally, a discrepancy is observed between energy use for heating of dwellings, calculated by numerical models and actual energy use. This gap may be partially attributed to differences between assumed and actual occupant behavior. To account for the gap, a number of occupant behavioral models were made on thermostat settings, the likelihood...
article 2015
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Hammink, H.A.J. (author)
TNO has extensive knowledge of heating, ventilation and air conditioning (HVAC), and can offer its services through theoretical studies, laboratory experiments and field measurements. This complete scope, made possible through our test facilities, enables the effective development of new products, improvements to existing technology and...
other 2015
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Polinder, H. (author), Spiekman, M.E. (author), van Dijk, H.A.L. (author)
A next generation of models is needed to guarantee energy performances of buildings and systems in practice. Current energy performance models use assumptions on climate, user behavior, characteristics of building and systems that may deviate from reality. Improvement of the accuracy of these models and assumptions is necessary to better predict...
article 2015
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Swamy, M. (author), Shoeibi Omrani, P. (author), González Díez, N. (author)
Gas transport in corrugated pipes often exhibit whistling behavior, due to periodic flow-induced pulsations generated in the pipe cavities. These aero-acoustic sources are strongly dependent on the geometrical dimensions and features of the cavities. As a result, uncertainties in the exact shape and geometry play a significant role in...
conference paper 2015
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Jacobs, P. (author), Liedelmeijer, K. (author), Borsboom, W.A. (author), van Vliet, M.R.A. (author), de Jong, P. (author)
Bouwers die kiezen voor energiezuinig en Nul op de Meter staan voor een aantal uitdagingen. Zowel op sociaal, economisch en technisch gebied is er werk aan de winkel. Er wordt al gepionierd en daar kunnen we van leren. Daarom delen wij, TNO, RIGO, Van Beek, Energiesprong | Platform 31, met plezier de lessen die we hebben getrokken uit het...
report 2015
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de Korte, E.M. (author), Spiekman, M. (author), Hoes-van Oeffelen, L. (author), van der Zande, B. (author), Vissenberg, G. (author), Huiskes, G. (author), Kuijt-Evers, L.F.M. (author)
The effects of pre-set environmental conditions of temperature and lighting on the preferred personal settings, comfort experience and task performance of office workers were investigated in an individually controlled workstation. Twenty subjects performed standardized tasks at a prototype workstation with individually controlled radiant heating...
article 2015
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Schutte, K.C.J. (author), Portela, L.M. (author), Twerda, A. (author), Henkes, R.A.W.M. (author)
In this work, we propose a detailed numerical model for asphaltene agglomeration and deposition, as induced by a resolved turbulent liquid carrier phase flow, in which transport, breakup, and re-entrainment are also taken into account. Asphaltene phase separation is represented by the appearance of adhesive primary particles, which bond upon...
article 2015
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Cozijnsen, E. (author), Liedelmeijer, K. (author), Borsboom, W.A. (author), van Vliet, M.R.A. (author)
Bouwers die kiezen voor energiezuinig en Nul op de Meter staan voor een aantal uitdagingen. Zowel op sociaal, economisch en technisch gebied is er werk aan de winkel. Er wordt al gepionierd en daar kunnen we van leren. Daarom delen wij, TNO, RIGO, Van Beek en Energiesprong | Platform 31, met plezier de lessen die we hebben getrokken uit de...
report 2015
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Gwanpua, S.G. (author), Verboven, P. (author), Leducq, D. (author), Brown, T. (author), Verlinden, B.E. (author), Bekele, E. (author), Aregawi, W. (author), Evans, J. (author), Foster, A. (author), Duret, S. (author), Hoang, H.M. (author), van der Sluis, S. (author), Wissink, E. (author), Hendriksen, L.J.A.M. (author), Taoukis, P. (author), Gogou, E. (author), Stahl, V. (author), El Jabri, M. (author), Le Page, J.F. (author), Claussen, I. (author), Indergård, E. (author), Nicolai, B.M. (author), Alvarez, G. (author), Geeraerd, A.H. (author)
Food quality (including safety) along the cold chain, energy use and global warming impact of refrigeration systems are three key aspects in assessing cold chain sustainability. In this paper, we present the framework of a dedicated software, the FRISBEE tool, for optimising quality of refrigerated food, energy use and the global warming impact...
article 2015
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Jacobs, P. (author)
Mensen zijn meer dan 90% van de tijd binnen. Echter, in tegenstelling tot buitenlucht, bestaan er geen wettelijke richtlijnen voor fijn stof voor de binnenlucht. Bovendien, zijn er momenteel geen eenvoudige meetprotocollen en richtlijnen beschikbaar waarnaar kan worden gerefereerd. Dit artikel beschrijft de achtergrond voor een nieuw...
article 2015
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Twerda, A. (author), O’Mahoney, T.S.D. (author), Velthuis, J.F.M. (author)
The precipitation of salt in porous reservoir rocks is an impairment to gas production, particularly in mature fields. Mitigation is typically achieved with regular water washes which dissolve the deposited salt and transport it in the water phase. However, since the process of salt precipitation is intrinsically linked to pressure drop, its...
conference paper 2014
Searched for: subject%3A%22HTFD%255C%2B%255C-%255C%2BHeat%255C%2BTransfer%255C%2B%2526%255C%2BFluid%255C%2BDynamics%22
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