- document
-
van Slogteren, Julia (author)This project aims to create a proof of concept to evaluate the potential value of implementing a heat recovery system for Quooker in the kitchen context. In response to the global goal of achieving net-zero CO2 emissions by 2050, reducing energy loss has become a shared priority. Heat recovery systems can significantly decrease energy...master thesis 2024
- document
-
Britting, Thomas (author)Liquid hydrogen has been identified as a low-emission alternative to hydrocarbon fuel sources for aircraft. Although there has been a notable increase in the number of studies and technology readiness of liquid hydrogen technologies in the recent decade, there is still more research and development necessary to realize commercially viable...master thesis 2024
- document
-
Lecardonnel, A. (author), de Servi, C.M. (author), Colonna, Piero (author), Laboureur, D. (author)In evaporators, the distribution of the liquid and vapor phases among the channels is a convoluted problem, depending on a wide range of parameters. However, maldistribution causes important losses of performance. Due to their complexity, the accurate modeling of such two-phase flows is difficult to handle. Hence, experimental studies are...journal article 2024
- document
-
Blom, T. (author), Jenkins, Andrew (author), van den Dobbelsteen, A.A.J.F. (author)The urban energy transition requires innovative heating and cooling systems, as well as enhanced flexibility in electricity usage. This paper explores the theoretical potential for vertical farms to contribute to the energy transition by supplying residual heat to local district heat networks and flexible electricity usage. A stepped approach...journal article 2024
- document
-
Kirschstein, Xenia (author), Ohagen, Max (author), Reber, Joscha (author), Vardon, P.J. (author), Bishara, Nadja (author)Ground source heat pumps (GSHP) coupled to shallow borehole heat exchangers (BHE) represent a low emission technology to provide space heating and cooling. However, ongoing long-term heating or cooling of the ground caused by unbalanced loads leads to a performance decline and in the worst case to a system shutdown. Enhanced regeneration can...review 2024
- document
-
Alkemade, Selwin (author)This paper addresses the urgent need to optimize the GreenCycl facilities energy utilization, by harnessing heat from the effluent of three thermal washing-disinfection machines into the preheating of cold clean water. Currently for every washing-disinfection cleaning program, 60 times a week, 105 liters of water with a temperature of 60 \degree...master thesis 2023
- document
-
Sanderse, Wessel (author)This study aims to develop a methodology for upscaling commercially available latent thermal energy storage systems using salt-hydrate HS48 as a phase change material, with a focus on determining optimal design parameters for different sizes and energy demands. The paper begins with a comprehensive review of phase-change materials' properties,...master thesis 2023
- document
-
Grevet, Camiel (author)The utilization of water electrolysis for hydrogen production is expected to increase significantly in the upcoming decades. Modular system design offers great advantages for emerging markets, whilst providing the necessary flexibility in capacity that intermittent renewable energy sources require. Literature research reveals little information...master thesis 2023
- document
-
Gupta, Mayank (author)Metal additive manufacturing has enabled great diversity and design freedom in heat exchanger design. However, these benefits cannot be adequately realised without optimizing its ancillary components as well, specifically the inlet and outlet manifolds. Optimizing the manifolds can significantly improve the flow distribution inside the heat...master thesis 2023
- document
-
Nanda, Rahul (author)Gasketed Plate Heat Exchangers (GPHEs) are a sub-class of heat exchangers that enable heat transfer between 2 fluids via metal plates. A common problem encountered in all heat exchangers is fouling. Fouling can be described as the deposition and accumulation of unwanted materials such as scale, algae, suspended solids and insoluble salts on a...master thesis 2023
- document
-
Bulstra, Kasper (author)The main problem in density-based two-fluid optimization is the fact that the two fluids often mix in optimal designs. Therefore, state-of-the-art two-fluid heat exchanger optimization includes non-mixing constraints. However, the current non-mixing constraints can only impose a constant wall-thickness between the two fluids. Depending on the...master thesis 2023
- document
-
Hoogerdijk, Tom (author)Hydrogen is seen as a potential energy carrier for the next generation of aircraft that will be more climate-friendly than the previous generation of kerosene-powered aircraft. Two types of hydrogen-based propulsion systems are currently foreseen for such aircraft: hydrogen combustion and hydrogen fuel cell. In addition to producing useful...master thesis 2023
- document
-
Scoccimarro, Antonio (author)Hydrogen fuel cells are set to play an important role in decarbonizing the aviation sector. They operate at higher efficiencies than turbine engines, but their low operating temperature requires a dedicated thermal management system. The added drag, weight and parasitic power of such a system has a high impact on aircraft performance and its...master thesis 2023
- document
-
van Heyningen, Maarten (author)Energy efficiency is a key goal for the Quooker system. To further increase the energy efficiency of the Quooker system, this study investigates a possible heat integration system where the waste heat from the refrigeration cycle for chilled drinking water is implemented to preheat water before entering the boiling water reservoir.<br/>Due to...master thesis 2023
- document
-
Wang, J. (author), Yan, Xin ping (author), Boersma, B.J. (author), Lu, Ming jian (author), Liu, Xiaohua (author)Printed circuit heat exchangers (PCHE) are designed to improve heat recovery and energy saving in supercritical CO<sub>2</sub> (S-CO<sub>2</sub>) power cycles. In the current study, a modified channel PCHE is proposed based on the regular straight channel and a zigzag channel. The thermal–hydraulic performance of four different types of PCHE...journal article 2023
- document
-
Yang, Jinxin (author), Wu, Zhifeng (author), Menenti, M. (author), Wong, Man Sing (author), Xie, Yanhua (author), Zhu, Rui (author), Abbas, Sawaid (author), Xu, Yong (author)Urban morphology affects the sensible heat flux and net radiation exchange which can alter urban heat mitigation plans. This study first parameterized the geometric effects on the net radiation, and then calculated the net radiation and sensible heat flux in the urban landscape of Hong Kong. Considering that the sensible heat flux is the main...journal article 2023
- document
-
Toa, X. (author), Shen, Yunwei (author), Wang, Bo (author), Infante Ferreira, C.A. (author)High concentration NH<sub>3</sub>/H<sub>2</sub>O is suitable for Kalina cycles used for the recovery of low grade heat. Plate heat exchangers (PHEs) are compact and reduce the charge of working fluid. This paper investigates the condensation of NH<sub>3</sub>/H<sub>2</sub>O with NH<sub>3</sub> mass concentrations of 80%-96%. The vapor and...journal article 2023
- document
-
van den Engel, P.J.W. (author), Malin, Michael (author), Venkatesh, Nikhilesh Kodur (author), de Araujo Passos, L.A. (author)This research evaluates the performance of a Phase Change Material (PCM) battery integrated into the climate system of a new transparent meeting center. The main research questions are: a. “Can the performance of the battery be calculated?” and b. “Can the battery reduce the heating and cooling energy demand in a significant way?” The first...journal article 2023
- document
-
Noel, L.F.P. (author), Maute, K. (author)Solving conjugate heat transfer design problems is relevant for various engineering applications requiring efficient thermal management. Heat exchange between fluid and solid can be enhanced by optimizing the system layout and the shape of the flow channels. As heat is transferred at fluid/solid interfaces, it is crucial to accurately resolve...journal article 2023
- document
-
Gradl, P.R. (author), Cervone, A. (author), Colonna, Piero (author)Heat exchangers for use in propulsion applications are very critical components because they must be efficient, compact and light and often operate with working fluids at extreme temperatures or pressures or both. Various components and systems use heat exchangers such as combustion chambers of gas turbines and internal combustion engines, fuel...conference paper 2022