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Kleute, B.J. (author), Dodoros, G. (author), Verpoort, J. (author), Safi Harb, Y. (author), Hemmes, K. (author)Ocean Thermal Energy Conversion (OTEC) is an advanced technology with a long history of developments. Today, research performed by students from Delft University of Technology shows that OTEC can be a feasible and cost competitive solution for sustainable energy in Curacao, one of the islands on the Netherlands Antilles. The team developed a...conference paper 2009
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Hemmes, K. (author)The often proposed solution for the fluctuating wind energy supply is the conversion of the surplus of wind energy into hydrogen by means of electrolysis. In this paper a patented alternative is proposed consisting of the integration of wind turbines with internal reforming fuel-cells, capable of co- producing hydrogen and electricity from...journal article 2007
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- Keijzer, M. (author), Hemmes, K. (author), van der Put, P. (author), Dewit, J.H.W. (author), Schoonman, J. (author) journal article 1997
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Shikhar, Utkarsh (author), Hemmes, Kas (author), Woudstra, T. (author)Fuel cells are electrochemical devices that are conventionally used to convert the chemical energy of fuels into electricity while producing heat as a byproduct. High temperature fuel cells such as molten carbonate fuel cells and solid oxide fuel cells produce significant amounts of heat that can be used for internal reforming of fuels such...journal article 2021
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Hemmes, Kas (author)In 1986 the Dutch national fuel cell program started. Fuel cells were developed under the paradigm of replacing conventional technology. Coal-fired power plants were to be replaced by large-scale MCFC power plants fuelled by hydrogen in a full-scale future hydrogen economy. With today's knowledge we will reflect on these and other ideas with...journal article 2020
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Cinti, G. (author), Bidini, G. (author), Hemmes, Kas (author)Solid oxide fuel cell systems for combined heat and power production (SOFC μCHP) fueled by natural gas are attractive because of their high electrical and total efficiency even at small scale. The development of a hydrogen economy will increase the availability of distributed hydrogen as a pure gas. Alternatively, hydrogen may be blended with...journal article 2019
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Ligtvoet, A. (author), Cuppen, E.H.W.J. (author), Di Ruggero, O. (author), Hemmes, Kas (author), Pesch, U. (author), Quist, J.N. (author), Mehos, D.C. (author)This paper reports on the refinement of constructive conflict methodology (CCM) combining Q methodology and stakeholder dialogue workshops for gas futures for the Netherlands. Since the end of the 1950s, natural gas exploration and exploitation has been a major focus of the Dutch energy policy. Discussions about the future of energy in the...journal article 2016
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Hemmes, Tom (author)There is a paradigm shift from two- to three-dimensional data, from maps to information dense models. Self-driving cars, digitization of historic buildings or maintenance of highway infrastructure are a small selection of many applications that use laser scanning to acquire three-dimensional data of our physical surroundings. Most of these...master thesis 2018
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Hemmes, A.F. (author)KLM Cargo transports freight by truck from European outstations to the Schiphol Hub. This freight is transported palletized. It is unexplored what the impact on the KPI’s of KLM Cargo is of changing pallet composition or the transportation method (palletized vs. Loose) of this export freight flow. The objective of this research is to provide...master thesis 2014
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Hemmes, Jasper (author)When simulating fluids the industry standard is Reynolds averaged Navier-Stokes (RANS). However, the results for certain flows are inaccurate. The main source of error in popular RANS turbulence models is the Boussinesq approximation, assuming a linear relationship between the Reynolds stress anisotropy and the mean rate of strain. Experiments...master thesis 2022
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Hemmes, J.M. (author)The design for a new Environmental Council on the grounds of the UN Headquarters at the East River coast in Manhattan, New York.master thesis 2013
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Hemmes, Charlotte (author)The Child Brain Lab (CBL), a part of the Paediatric Brain Centre at Sophia Children’s Hospital within the Erasmus Medical Centre, is a scientific research and testing facility dedicated to children with brain conditions (CB). These children frequently experience isolation and lack of social contact due to their situations. These observations...master thesis 2023
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Hemmes, K. (author)The invention relates to a system, a device and a method for the transport of energy. To this end a conduit is provided for the transport of hydrogen, and a conductor that is in thermal contact with the conduit, for the transport of electricity. The conductor is preferably introduced into the conduit. By partly evaporating the hydrogen in the...patent 2007
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Hemmes, K. (author)The invention relates to a method for the production of nitrogen and hydrogen in a fuel cell with an anode and a cathode, comprising the steps of inducing a combustion in a fuel cell, wherein a fuel is supplied to the anode, and air is supplied to the cathode, and with oxygen in the air being reduced. According to the invention, nitrogen from...patent 2007
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Hemmes, K. (author), Koops, K.R. (author)Ellipsometer having light source means which provide a first light beam (g1) having a first angular frequency ( omega 1) and a second light beam (g2) having a second angular frequency ( omega 2), a neutral beam splitter (N) having a front face for receiving a measuring beam (g'm2), which during operation is produced by scanning a sample (S;OD1...patent 1998
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Hemmes, K. (author)The invention relates to a method of converting a carbon-comprising material at elevated temperature in the presence of a molecule that comprises at least one oxygen atom. According to the invention the carbon-comprising material in the fuel cell is converted substantially to carbon monoxide in a reaction with a negative enthalpy ( DELTA H) and...patent 1999
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Hemmes, K. (author), WIND, M.M. (author), Lepoole, R. (author), Habing, P.E. (author)Abstract of WO 9416310 (A1) Ellipsometer comprising at least a Zeeman laser (Z) to generate two beams (g1, g2) which are slightly shifted in frequency and (after transmission through a birefringent crystal (quarter-wave plate)) are both polarized linearly but perpendicular to one another, a non-polarizing beam splitter (N) downstream of which a...patent 1994
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Hemmes, K. (author)The invention relates to a system and method for integrating renewable energy and a fuel cell for the production of electricity and hydrogen, wherein this comprises the use of renewable energy as fluctuating energy source for the production of electricity and also comprises the use of at least one fuel cell, and wherein a control unit controls...patent 2007
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Hemmes, K. (author), Dijkema, G.P.J. (author)A method of operating a molten carbonate fuel cell having an anode and a cathode and in between a matrix comprising molten carbonate. Carbon dioxide is introduced into the matrix at a distance from the cathode. This greatly reduces the cathode's deterioration and in the system design increases the control potential of the fuel cell. A fuel cell...patent 1998
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Hemmes, K. (author)The invention relates to a system and method for integrating renewable energy and a fuel cell for the production of electricity and hydrogen, wherein this comprises the use of renewable energy as fluctuating energy source for the production of electricity and also comprises the use of at least one fuel cell, and wherein a control unit controls...patent 2007
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