Relevant bibliographies by topics / Regenerative Cooling

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Regenerative Cooling'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 June 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Regenerative Cooling.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Regenerative Cooling"

1

Staicovici, M. D. "Polybranched regenerative GAX cooling cycles." International Journal of Refrigeration 18, no. 5 (1995): 318–29. http://dx.doi.org/10.1016/0140-7007(95)00012-z.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Qi, Feng. "Regenerative cooling for liquid rocket engines." Journal of Thermal Science 4, no. 1 (1995): 54–58. http://dx.doi.org/10.1007/bf02653165.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Kanda, Takeshi, Goro Masuya, Fuimei Ono, and Yoshio Wakamatsu. "Effect of film cooling/regenerative cooling on scramjet engine performances." Journal of Propulsion and Power 10, no. 5 (1994): 618–24. http://dx.doi.org/10.2514/3.23771.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Bai, Y. G., Y. G. Zhang, Y. F. Liu, K. Yang, and X. W. Gao. "Numerical Analysis of a Heater with Conjugate Heat Transfer." Advanced Materials Research 629 (December 2012): 711–15. http://dx.doi.org/10.4028/www.scientific.net/amr.629.711.

Full text
Abstract:
This paper focuses on the influence of the conjugative heat transfer in a regenerative cooling structure. With proper numerical modelling by both finite element method and computational fluid dynamic method, the distribution of the temperature in the solid and coolant, the interfacial heat flux, and the stress state and the deformation of this cooling structure are obtained. These results show that the thermal equilibrium of the cooling structure can be achieved in a given flow condition. The present numerical method has significant benefits to solve the heat transfer between engine coolant and solid components.
APA, Harvard, Vancouver, ISO, and other styles
5

Wang, Jun Yi, Gildas Diguet, Guo Xing Lin, and Jin Can Chen. "Performance Characteristics of a Magnetic Ericsson Refrigeration Cycle Using La(Fe0.88Si0.12)13H1 or Gd as the Working Substance." Advanced Materials Research 631-632 (January 2013): 322–25. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.322.

Full text
Abstract:
Based on the experimental characteristics of iso-field entropy varying with temperature for the room-temperature magnetic refrigeration material La(Fe0.88Si0.12)13H1 or Gd, the regenerative Ericsson refrigeration cycle using La(Fe0.88Si0.12)13H1 or Gd as the working substance is established and their thermodynamic performances are evaluated and analyzed. By means of numerical calculation, the influence of non-perfect regeneration on the main thermodynamic performances of the cycle is revealed and discussed. Furthermore, the coefficient of performance (COP), non-perfect regenerative heat quantity, and net cooling quantity of the Ericsson refrigeration cycle using La(Fe0.88Si0.12)13H1 or Gd as the working substance are compared. The results obtained show that it is beneficial to the cooling quantity of the cycles using La(Fe0.88Si0.12)13H1 or Gd as the working substance to operate in the region of Tcold >T0 and, at the condition of a same temperature span, the cooling quantity for La(Fe0.88Si0.12)13H1 is larger than that for Gd.
APA, Harvard, Vancouver, ISO, and other styles
6

Griffith, Lucas, Agata Czernuszewicz, Julie Slaughter, and Vitalij Pecharsky. "Active magnetic regenerative cooling with smaller magnets." International Journal of Refrigeration 125 (May 2021): 44–51. http://dx.doi.org/10.1016/j.ijrefrig.2021.01.018.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Palej, Patryk, and Tomasz Palacz. "Preliminary Design Analysis of Regenerative Cooling for N2O/Alcohol Small Scale Liquid Rocket Engine." Transactions on Aerospace Research 2018, no. 3 (2018): 87–102. http://dx.doi.org/10.2478/tar-2018-0024.

Full text
Abstract:
Abstract This paper presents a concept of a small scale liquid-propellant rocket engine designed in AGH Space Systems for sounding rocket. During preliminary design of thermal aspects various ways of cooling were evaluated and described. Possible issues and design approaches for ablative, radiation and regenerative cooling are raised. The authors describe available solutions. Regenerative cooling is especially concerned as it is most popular solution in bi-liquid engines, in which alcohol fuel acts as coolant and is preheated before it reaches combustion chamber. To estimate a possible temperature distribution - and thus an applicability of such a system in the engine - a mathematical model of heat transfer was developed. Unique element of said engine is its oxidizer - nitrous oxide, which have been rarely used to date. Comparison between typical LOX bi-liquids is given and major differences that affect cooling arrangement are discussed. The authors compared different combinations of coolants, fuel/oxidizer ratios etc. to optimize the temperature distribution which is a key factor for the engine performance.
APA, Harvard, Vancouver, ISO, and other styles
8

Zuo, Jingying, Silong Zhang, Jiang Qin, Wen Bao, and Naigang Cui. "Performance evaluation of regenerative cooling/film cooling for hydrocarbon fueled scramjet engine." Acta Astronautica 148 (July 2018): 57–68. http://dx.doi.org/10.1016/j.actaastro.2018.04.037.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Kim, Kyoung Hoon, Kyoung Jin Kim, and Hyung Jong Ko. "Effects of Wet Compression on Performance of Regenerative Gas Turbine Cycle with Turbine Blade Cooling." Applied Mechanics and Materials 224 (November 2012): 256–59. http://dx.doi.org/10.4028/www.scientific.net/amm.224.256.

Full text
Abstract:
When water is injected at an inlet of compressor, wet compression occurs due to evaporation of water droplets. In this work, the effects of wet compression on the performance of regenerative gas turbine cycle with turbine blade cooling are analytically investigated. For various pressure ratios and water injection ratios, the important system variables such as ratio of coolant flow for turbine blade cooling, fuel consumption, specific power and thermal efficiency are estimated. Parametric studies show that wet compression leads to significant enhancement in both specific power and thermal efficiency in gas turbine systems with turbine blade cooling.
APA, Harvard, Vancouver, ISO, and other styles
10

Zhang, Bo Yi, and Wei Qiang Liu. "Thermal-Structure Coupling Numerical Simulation of a Special-Type Plug Nozzle." Advanced Materials Research 217-218 (March 2011): 1510–15. http://dx.doi.org/10.4028/www.scientific.net/amr.217-218.1510.

Full text
Abstract:
Two-dimensional transient heat transfer model of the plug of regenerative cooling plug nozzle is built. Based on the convective heat-transfer coefficient and the radiation heat flux obtained using analytic method and axisymmetric unstructured Delaunay grid applied to mesh the simplified physical model, numerical simulations of transient temperature field and thermal distortion are carried out by finite element method combined with thermal-structure coupling theory. Not only the results of numerical calculation under working conditions with and without regenerative cooling, but the results under low and high working conditions are compared. The results shows that thermal distortion can be reduced effectively when regenerative cooling method is adopted in the throat and combustion chamber that have the most serious thermal condition.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Regenerative Cooling"

1

Boysan, Mustafa Emre. "Analysis Of Regenerative Cooling In Liquid Propellant Rocket Engines." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610190/index.pdf.

Full text
Abstract:
High combustion temperatures and long operation durations require the use of cooling techniques in liquid propellant rocket engines. For high-pressure and high-thrust rocket engines, regenerative cooling is the most preferred cooling method. In regenerative cooling, a coolant flows through passages formed either by constructing the chamber liner from tubes or by milling channels in a solid liner. Traditionally, approximately square cross sectional channels have been used. However, recent studies have shown that by increasing the coolant channel height-to-width aspect ratio and changing the cross sectional area in non-critical regions for heat flux, the rocket combustion chamber gas side wall temperature can be reduced significantly without an increase in the coolant pressure drop. In this study, the regenerative cooling of a liquid propellant rocket engine has been numerically simulated. The engine has been modeled to operate on a LOX/Kerosene mixture at a chamber pressure of 60 bar with 300 kN thrust and kerosene is considered as the coolant. A numerical investigation was performed to determine the effect of different aspect ratio cooling channels and different number of cooling channels on gas-side wall and coolant temperature and pressure drop in cooling channel.
APA, Harvard, Vancouver, ISO, and other styles
2

Harvey, Adam Benedict. "Study of an intermittent regenerative cycle for solar cooling." Thesis, University of Warwick, 1990. http://wrap.warwick.ac.uk/2701/.

Full text
Abstract:
The study presented here is focused on the use of aqua-ammonia solution in a novel solar-powered refrigeration cycle intended to be suitable for use in the rural areas of developing countries. The cycle is referred to as a `intermittent regenerative' (IR) cycle, the term regenerative meaning in this context the use of heat recovery or recuperation. The first chapter describes the three better known cycles which may be considered for this application. The IR cycle is introduced as a hybrid development of these which offers the significant advantages of high efficiency while minimising complexity. Chapter 1 provides a methodology by which the novel aqua-ammonia system can be evaluated in comparison with existing systems. The second chapter surveys previous experimental work on solar driven aqua-ammonia cycles. Chapter 3 consists of a detailed design study of the new IR cycle based on computer modelling techniques. The study serves as an analysis of the cycle and allows the performance of the cycle, together with design features and component sizes, to be simulated in a variety of meteorological conditions. A number of original design proposals are evaluated through the modelling exercise. Chapter 4 summarises the results of a second separate modelling exercise which investigates the absorption phase of the cycle. Chapters 5 and 6 describe experimental work. The results of laboratory tests are compared with the predictions of the computer model and in the event serve to validate the theoretical characterisation made in chapter 3 of the performance of key components of the system. The energy efficiency of the system as measured by experiment is proved to correspond to theoretical prediction, so representing a significant advance on the performance of alternative systems. Chapter 7 addresses itself to the wider question of the social and economic validity of a device with the performance and cost of the IR device. A case study is undertaken which explores the potential role of the device in the fish trading economy of Zambia. The study provides data valuable in assessing the usefulness of the technology in helping to stimulate the under-capitalised rural economy of a developing country and in improving local food resource utilisation. Chapter 8 draws together the conclusions of the various chapters and provides an overall conclusion and comment on the value of the IR system. It is proved to have a high efficiency but not to have the robustness nor portability demanded for widespread application in remote locations. Nevertheless the likely life-time cost-effectiveness of the system is judged to be an improvement on existing alternatives and suggestions are made for further improvement.
APA, Harvard, Vancouver, ISO, and other styles
3

Lopata, Jacob Brian 1968. "Characterization of heat transfer rates in supercritical ethanol for micro-rocket engine regenerative cooling." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9601.

Full text
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1998.
Includes bibliographical references (p. 105).
An experimental investigation that characterizes heat transfer rates to supercritical ethanol in micro-channels is presented. Forced convection heat transfer data resulted from the use of small diameter circular tubes fed by a pressurized fuel supply. The test sections consisted of resistively heated stainless steel hypodennic tubes ~4mm in length with an inside diameter of ~95[mu] Test conditions were such that most of the physical parameters that are expected in the cooling passages of a silicon fabricated MicroRocket engine were duplicated. These included conditions of temperature, pressure, film Reynolds number, bulk Nusselt number, and heat flux. The pressures investigated were 100atm and 300atm, corresponding to reduced pressures of 1.62 and 4.86 respectively. Heat flux values ranged from 3 to 125Wlmm2. Experimental results indicate that ethanol is a suitable fuel for a regeneratively cooled MicroRocket engine. At several observed pressures, temperatures and heat fluxes, bulk Nusselt number values exceeded those required in the engine cooling passages. In addition, an analysis of the inside tube wall of one of the test sections indicates that carbon deposition resulting from the pyrolysis of ethanol will not be an issue for MicroRocket engine design. It was also found that established empirical formulas provided poor correlation to experimental data but that one of these equations suitably modified, provided excellent correlation at 300atm for a restricted range of conditions.
by Jacob Michael Lopata.
S.M.
APA, Harvard, Vancouver, ISO, and other styles
4

Najmi, Hussain. "Selectivity of Porous Composite Materials for Multispecies mixtures : Application to Fuel Cells." Thesis, Bourges, INSA Centre Val de Loire, 2018. http://www.theses.fr/2018ISAB0001/document.

Full text
Abstract:
L'utilisation de pile à combustible à bord d'un avion impose d'extraire des espèces légères (telles que l'hydrogène et les hydrocarbures légers) du combustible liquide qui est stocké et utilisé, éventuellement à des températures où se produit une pyrolyse du carburant. La porosité d’un matériau composite pourrait être utilisée pour filtrer les espèces sélectionnées. L'efficacité de séparation d’un matériau poreux dépend de deux facteurs qui sont: la perméance et la sélectivité.Ces facteurs sont souvent déterminés avec une configuration classique utilisant un échantillon en forme d’un disque d’un matériau poreux. Cependant, cette configuration est loin de la réalité qui est composée de tubes. Par conséquent, une étude est réalisée en considérant les deux configurations en utilisant différents types de disques poreux et un tube composite poreux. Ensuite, les résultats obtenus sont comparés et les différents facteurs affectant le processus de perméation sont étudiés.Après cela, un banc d'essai innovant est développé et utilisé afin de déterminer la distribution axiale des deux propriétés d'un tube poreux en acier inoxydable (c'est-à-dire la perméance et la sélectivité). Les effets des conditions opératoires (débit massique d'entrée et pression d'entrée) ont été étudiés. Une nouvelle forme radiale de l'équation de perméabilité aux gaz a été développée pour ce travail et sa relation avec la perméabilité de Darcy est établie. La variation de pression le long de l'axe central du tube est déterminée. Les effets de cette variation de pression sur les propriétés physiques des gaz tels que la densité et la viscosité sont déterminés et leur influence sur la sélectivité est étudiée en utilisant différents gaz tels que l'azote, le dioxyde de carbone, le méthane et l'hélium.Plus tard, un mélange binaire de dioxyde de carbone (CO2) et d'Azote (N2) est considéré sous trois compositions volumétriques différentes (50/50%, 60/40% et 70/30%) afin d'évaluer la propriété de séparation de gaz d’un tube poreux (effet de membrane). La perméabilité au gaz pur, la perméabilité du mélange, la sélectivité idéale et la sélectivité de séparation de ce tube sont déterminées pour un débit massique et une pression d'entrée différents. Les facteurs affectant les distributions de CO2 et de N2 à l'intérieur du tube poreux sont étudiés.Les résultats obtenus peuvent être utiles pour comprendre les facteurs affectant la séparation des gaz dans le cas d'un tube poreux pour des processus industriels continus
Using Fuel Cell on board of aircraft imposes to extract light species (such as Hydrogen and light hydrocarbons) from the liquid fuel which is stored and used, possibly at temperatures where a fuel pyrolysis occurs. Porosity of a composite material could be used to filtrate the selected species. The separation efficiency of a porous material depends upon two factors which are: Permeance and Selectivity.These factors are often determined with a classical configuration using a porous disk sample. However, this configuration is far from the realistic one consisting of tubes. Therefore, a study is performed considering both configurations using different types of porous disks and a porous composite tube. Then, the obtained results are compared and the different factors affecting the permeation process are studied.After that, an innovative permselectivity test bench is developed and used in order to determine the axial distribution of the two properties of a stainless steel porous tube (i.e. permeance and selectivity). The effects of the operating conditions (inlet mass flowrate and inlet pressure) have been studied. A new radial form of the gas permeability equation has been developed for this work and its relationship with Darcy‘s permeability is established. The pressure variation along the centre axis of the tube is determined. The effects of this pressure variation on the physical properties of gases such as density and viscosity are determined and their influence on the selectivity is studied using different gases such as Nitrogen, Carbon dioxide, Methane, and Helium. Later, a binary mixture of Carbon Dioxide (CO2) and of Nitrogen (N2) is considered under three different volumetric compositions (50/50%, 60/40% and 70/30%) in order to evaluate the separation property of the porous stainless steel tube (membrane effect). The pure gas permeability, the mixture permeability, the ideal selectivity and the separation selectivity of this tube are determined for a different mass flowrate and inlet pressure. The factors affecting the distributions of CO2 and N2 inside the porous tube are investigated. The obtained results can be useful to understand the factors affecting gas separation in case of a porous tube for continuous industrial processes
APA, Harvard, Vancouver, ISO, and other styles
5

Taddeo, Lucio. "Énergie recyclée par conversion chimique pour application à la combustion dans le domaine aérospatial (ERC3)." Thesis, Bourges, INSA Centre Val de Loire, 2017. http://www.theses.fr/2017ISAB0002/document.

Full text
Abstract:
Le refroidissement actif par endocarburant permet d’assurer la tenue thermique d’un superstatoréacteur pour le vol hypersonique. Néanmoins, l’utilisation de cette technologie de refroidissement passe par la maitrise du couplage combustion – pyrolyse, qui fait de la définition d’une stratégie de contrôle du moteur un véritable défi. Une étude expérimentale a été réalisée afin d’analyser l’effet du paramètre de commande principal, le débit de combustible, sur des paramètres de sorties pertinents, à l’aide d’un dispositif de test spécifiquement conçu pour appréhender le couplage combustion – pyrolyse. Ceci a permis d’étudier la dynamique d’un circuit régénératif par rapport à ce paramètre de commande. Une étude cinétique paramétrique sur la pyrolyse du carburant a été conduite en parallèle de celle expérimentale afin d’affiner l’analyse et améliorer l’interprétation des expériences. La décomposition du carburant utilisé pour les tests (éthylène) a été prise en compte grâce à un mécanisme cinétique détaillé (153 espèces, 1185 réactions chimiques)
Regenerative cooling is a well-known cooling technique, suitable to ensure scramjets thermal protection. The development of regeneratively cooled engines using an endothermic propellant is a challenging task, especially because of the strong coupling between fuel decomposition and combustion, which makes the definition of an engine regulation strategy very hard. An experimental study, aiming at identifying the effect of fuel mass flow rate variations on a fuel cooled-combustor in terms of system dynamics has been carried out. A remotely controlled fuel-cooled combustor, designed by means of CDF calculations and suitable for the experimental analysis of combustion-pyrolysis coupling, has been used. In order to improve tests results analysis, a parametric study to characterize fuel decomposition has also been realized. The pyrolysis has been modeled by using a detailed kinetic mechanism (153 species, 1185 chemical reactions)
APA, Harvard, Vancouver, ISO, and other styles
6

Yang, Cheng-Min, and 楊承閔. "Low-carbon Desiccant Cooling System with Combination of Low-temperature Regenerative Periodic Total Heat Exchanger." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/05355137803563205015.

Full text
Abstract:
碩士
國立臺灣大學
機械工程學研究所
100
Nowadays, indoor air quality has become a critical issue in the air-conditioning industry. To maintain a healthy indoor environment, it is inevitable to ventilate with outdoor air. Nevertheless, this ventilation causes dramatic energy loss. One solution to this problem is to install a total heat exchanger. In contrast to the conventional rotary-type total heat exchanger, this research employs the periodic flow to fixed desiccant wheels. Moreover, to maintain solid adsorptive effect, traditional desiccant dehumidifier uses high temperature and low humidity gas to regenerate the desiccant wheel. The request for environmental humidity control of the general residential space is , however, not so rigorous. As a result, the total heat exchanger in this research adopts the lower regeneration condition to fulfill the requirement for comfortable environment, which could save substantial energy since the additional regeneration heat source would not be needed. Finally, this research aims at investigating the practical performance and the energy conservation of the low-carbon desiccant cooling system. The first part of this research investigates the performance of low-temperature regenerative periodic total heat exchanger based on the experimental method. The experiments are divided into two parts, one are material tests and the other are periodic operation tests. According to the result of the fundamental material tests, activated alumina packed bed has great capacities for both the adsorption and desorption as the temperature of the regeneration air is 25℃, which shows that activated alumina packed bed is more applicable to the total heat exchanger under the low-temperature regeneration condition. In addition, the result of the periodic operation of the total heat exchanger displays that the sensible heat effectiveness and latent heat effectiveness of the total heat exchanger increase as the time of operating period is abridged. At a operating period of 2 minutes, the total heat exchanger has the highest sensible, latent, and total heat effectiveness, which are 84.2%, 63.8%, and 70.9% respectively. The second part of the research investigates the performance of the radiant ceiling cooling piping with different inlet water temperatures. The theoretical model is established to determine the cooling capacity of the system based on the experimental data. The results indicate that the cooling capacity of the cooling piping increases as the decreasing of the inlet water temperature. In addition, as the system operates with the 22℃ tap water, the cooling output is about 65.0W/m2, and the natural convection and radiation heat flux are 30.6 W/m2 and 34.4 W/m2 respectively. In the last part of this research, the components and the operating mode of the low-carbon desiccant cooling system are depicted in detail. Furthermore, the actual performance of the system are investigated in an office room located at Taipei Water Department, and the result indicates that the usage of the radiant ceiling cooling piping for precooling the indoor environment enables the traditional air conditioner to reduce two-third of the original operating time. Besides, the test of the whole system is conducted in the same office, and it is observed that using this system to handle the incoming air could save up to 67.4% of the energy consumption compared to the case that the untreated fresh air is directly introduced. Finally, a design of an ameliorative low-carbon desiccant cooling system without using a traditional air conditioner, which is composed of a heat pump, radiant ceiling cooling piping, and a desiccant dehumidifier, is proposed.
APA, Harvard, Vancouver, ISO, and other styles
7

(6866786), Timothy P. Gurshin. "Heating and Regenerative Cooling Model for a Rotating Detonation Engine Designed for Upper Stage Performance." Thesis, 2019.

Abstract:
Rotating detonation engines (RDE) have the potential to significantly advance the efficiency of chemical propulsion. They are approximately one order of magnitude shorter than constant pressure engines, a savings benefit that is especially important for upper stage engines. There are many challenges to advancing their technological readiness level, but one area this thesis attempts to help mitigate is the understanding of heat loads and the viability of regenerative jacket cooling.
A one-dimensional, steady-state heat transfer and regenerative cooling model for the upper stage RL10A-3-3A (RL10) engine is developed in MATLAB. This model considers forced convection in the boundary layer between the combustion product gases and the hot-gas-side wall, conduction through the wall, and forced convection in the boundary layer between the hydrogen coolant and coolant-side wall. Variable gas and coolant transport properties are utilized to increase physical accuracy. The model also quantifies pressure drop through the cooling channels due to wall friction. This allows for overall heat flux, and consequently hot-gas-side and coolant-side wall temperatures to be predicted along the length of the engine. Properties of the coolant can also be predicted including the jacket outlet temperature and pressure. These cooling circuit final parameters, temperature rise and pressure drop, were matched to a more detailed, three-dimensional, transient RL10 system model developed by NASA, thereby anchoring this model.
An RDE is designed to notionally meet the thrust level of RL10. Model design decisions are documented and explained, and a detailed comparison of the two engine geometries is made. The regenerative cooling model is adapted for the RDE considering such unique aspects as detonative heat flux and the centerbody/plug nozzle. Steady state heating and cooling analysis is performed on the RDE and the results are compared to RL10. Investigation into the effects of the RDE’s differing cooling jacket output conditions on the turbine are calculated and discussed.
Appendix analyses consider more realistic detonative heat flux approximations according to recent RDE calorimetry studies and the effect of altering detonation chamber heat flux.
Even with the conservative assumption of throat-level heat flux everywhere in the RDE’s annular combustion chamber, regenerative jacket cooling shows promise as a means of thermal survival. Wall temperatures are reasonable, coolant temperature rise is lower, and coolant pressure drop is lower. The reduced temperature rise presents the new challenge of correctly powering the turbine since the incoming coolant is less energized. Further studies should also look at channel optimization specific to the RDE to maximize cooling performance and ease of system integration.
APA, Harvard, Vancouver, ISO, and other styles
8

Van, Niekerk Steven Cronier. "Optimisation criteria of a Rankine steam cycle powered by thorium HTR / Steven Cronier van Niekerk." Thesis, 2014. http://hdl.handle.net/10394/12209.

Full text
Abstract:
HOLCIM has various cement production plants across India. These plants struggle to produce the projected amount of cement due to electricity shortages. Although coal is abundant in India, the production thereof is in short supply. It is proposed that a thorium HTR (100 MWt) combined with a PCU (Rankine cycle) be constructed to supply a cement production plant with the required energy. The Portland cement production process is investigated and it is found that process heat integration is not feasible. The problem is that for the feasibility of this IPP to be assessed, a Rankine cycle needs to be adapted and optimised to suit the limitations and requirements of a 100 MWt thorium HTR. Advantages of the small thorium HTR (100 MWt) include: on-site construction; a naturally safe design and low energy production costs. The reactor delivers high temperature helium (750°C) at a mass flow of 38.55 kg/s. Helium re-en ters the reactor core at 250°C. Since the location of the cement production plant is unknown, both wet and dry cooling tower options are investigated. An overall average ambient temperature of India is used as input for the cooling tower calculations. EES software is used to construct a simulation model with the capability of optimising the Rankine cycle for maximum efficiency while accommodating various out of the norm input parameters. Various limitations are enforced by the simulation model. Various cycle configurations are optimised (EES) and weighed against each other. The accuracy of the EES simulation model is verified using FlowNex while the optimised cycle results are verified using Excel’s X-Steam macro. It is recommended that a wet cooling tower is implemented if possible. The 85% effective heat exchanger delivers the techno-economically optimum Rankine cycle configuration. For this combination of cooling tower and heat exchanger, it is recommended that the cycle configuration consists of one de-aerator and two closed feed heaters (one specified). After the Rankine cycle (PCU) has been designed and optimised, it is evident that the small thorium HTR (100 MWt) can supply the HOLCIM plant with the required energy. The optimum cycle configuration, as recommended, operates with a cycle efficiency of 42.4% while producing 39.867 MWe. A minimum of 10 MWe can be sold to the Indian distribution network at all times, thus generating revenue.
MIng (Mechanical Engineering), North-West University, Potchefstroom Campus, 2014
APA, Harvard, Vancouver, ISO, and other styles
9

Cribbs, Kimberly. "The regeneration of a liquid desiccant using direct contact membrane distillation to unlock the potential of coastal desert agriculture." Thesis, 2018. http://hdl.handle.net/10754/627916.

Full text
Abstract:
In Gulf Cooperation Council (GCC) countries, a lack of freshwater, poor soil quality, and ambient temperatures unsuitable for cultivation for parts of the year hinders domestic agriculture. The result is a reliance on a fluctuating supply of imported fresh produce which may have high costs and compromised quality. There are agricultural technologies available such as hydroponics and controlled environment agriculture (CEA) that can allow GCC countries to overcome poor soil quality and ambient temperatures unsuitable for cultivation, respectively. Evaporative cooling is the most common form of cooling for CEA and requires a significant amount of water. In water-scarce regions, it is desirable for sea or brackish water to be used for evaporative cooling. Unfortunately, in many coastal desert regions, evaporative cooling does not provide enough cooling due to the high wet-bulb temperature of the ambient air during hot and humid months of the year. A liquid desiccant dehumidification system has been proven to lower the wet-bulb temperature of ambient air in the coastal city of Jeddah, Saudi Arabia to a level that allows for evaporative cooling to meet the needs of heat-sensitive crops. Much of the past research on the regeneration of the liquid desiccant solution has been on configurations that release water vapor back to the atmosphere. Studies have shown that the amount of water captured by the liquid desiccant when used to dehumidify a greenhouse can supply a significant amount of the water needed for irrigation. This thesis studied the regeneration of a magnesium chloride (MgCl2) liquid desiccant solution from approximately 20 to 31wt% by direct contact membrane distillation and explored the possibility of using the recovered water for irrigation. Two microporous hydrophobic PTFE membranes were experimentally tested and modeled when the bulk feed and coolant temperature difference was between 10 and 60°C. In eight experiments, the salt rejection was higher than 99.97% and produced permeate suitable for irrigation with a concentration of MgCl2 less than 94 ppm.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Regenerative Cooling"

1

Harvey, Adam Benedict. Study of an intermittent regenerative cycle for solar cooling. typescript, 1990.

APA, Harvard, Vancouver, ISO, and other styles
2

Kanda, Takeshi. Effect of regenerative cooling on rocket engine specific impulse. National Aerospace Laboratory, 1993.

APA, Harvard, Vancouver, ISO, and other styles
3

Regenerative thermal machines (Stirling and Vuilleumier cycle machines) for heating and cooling. International Institute of Refrigeration, 2000.

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Regenerative Cooling"

1

Peter, Johannes M. F., and Markus J. Kloker. "Numerical Simulation of Film Cooling in Supersonic Flow." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_5.

Full text
Abstract:
Abstract High-order direct numerical simulations of film cooling by tangentially blowing cool helium at supersonic speeds into a hot turbulent boundary-layer flow of steam (gaseous H2O) at a free stream Mach number of 3.3 are presented. The stagnation temperature of the hot gas is much larger than that of the coolant flow, which is injected from a vertical slot of height s in a backward-facing step. The influence of the coolant mass flow rate is investigated by varying the blowing ratio F or the injection height s at kept cooling-gas temperature and Mach number. A variation of the coolant Mach number shows no significant influence. In the canonical baseline cases all walls are treated as adiabatic, and the investigation of a strongly cooled wall up to the blowing position, resembling regenerative wall cooling present in a rocket engine, shows a strong influence on the flow field. No significant influence of the lip thickness on the cooling performance is found. Cooling correlations are examined, and a cooling-effectiveness comparison between tangential and wall-normal blowing is performed.
APA, Harvard, Vancouver, ISO, and other styles
2

Zimm, C. B., E. M. Ludeman, M. C. Severson, and T. A. Henning. "Materials for Regenerative Magnetic Cooling Spanning 20K to 80K." In Advances in Cryogenic Engineering. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3368-9_15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Hötte, Felix, Oliver Günther, Christoph von Sethe, Matthias Haupt, Peter Scholz, and Michael Rohdenburg. "Lifetime Experiments of Regeneratively Cooled Rocket Combustion Chambers and PIV Measurements in a High Aspect Ratio Cooling Duct." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_18.

Full text
Abstract:
Abstract This paper aims at experimental investigations of the life limiting mechanisms of regeneratively cooled rocket combustion chambers, especially the so called doghouse effect. In this paper the set up of a cyclic thermo-mechanical fatigue experiment and its results are shown. This experiment has an actively cooled fatigue specimen that is mounted downstream of a subscale GOX-GCH$$_{\text {4}}$$ combustion chamber with rectangular cross section. The specimen is loaded cyclically and inspected after each cycle. The effects of roughness, the use of thermal barrier coatings, the length of the hot gas phase, the oxygen/fuel ratio and the hot gas pressure are shown. In a second experiment the flow in a generic high aspect ratio cooling duct is measured with the Particle Image Velocimetry (PIV) to characterize the basic flow. The main focus of the analysis is on the different recording and processing parameters of the PIV method. Based on this analysis a laser pulse interval and the window size for auto correlation is chosen. Also the repeatability of the measurements is demonstrated. These results are the starting point for future measurements on the roughness effect on heat transfer and pressure loss in a high aspect ratio cooling duct.
APA, Harvard, Vancouver, ISO, and other styles
4

Bukeikhanov, N. R., S. I. Gvozdkova, and E. V. Butrimova. "Automated Resource-Saving System for the Use and Regeneration of Epilam-Based Lubricating-Cooling Technological Liquid." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22063-1_151.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Aprea, Ciro, Adriana Greco, Angelo Maiorino, and Claudia Masselli. "Magnetocaloric as Solid-State Cooling Technique for Energy Saving." In Advances in Human Services and Public Health. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-3576-9.ch012.

Full text
Abstract:
Magnetocaloric is an emerging cooling technology arisen as alternative to vapor compression. The main novelty introduced is the employment of solid-state materials as refrigerants that experiment magnetocaloric effect, an intrinsic property of changing their temperature because of the application of an external magnetic field under adiabatic conditions. The reference thermodynamic cycle is called active magnetocaloric regenerative refrigeration cycle, and it is Brayton-based with active regeneration. In this chapter, this cooling technology is introduced from the fundamental principles up to a description of the state of the art and the goals achieved by researches and investigations.
APA, Harvard, Vancouver, ISO, and other styles
6

Harvey, A. B. "PERFORMANCE OF AN INTERMITTENT REGENERATIVE CYCLE FOR SOLAR COOLING." In Advances In Solar Energy Technology. Elsevier, 1988. http://dx.doi.org/10.1016/b978-0-08-034315-0.50477-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Minato, R., K. Higashino, M. Sugioka, and Y. Sasayam. "Control of LNG Pyrolysis and Application to Regenerative Cooling Rocket Engine." In Heat Exchangers - Basics Design Applications. InTech, 2012. http://dx.doi.org/10.5772/34146.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Ko, Daeho, Mikyung Kim, I. Moon, and Dae-Ki Choi. "New designed TSA bed with cooling jacket for purification and regeneration of benzene and toluene." In Computer Aided Chemical Engineering. Elsevier, 2001. http://dx.doi.org/10.1016/s1570-7946(01)80066-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Sultan, Muhammad, Muhammad Bilal, Takahiko Miyazaki, Uzair Sajjad, and Fiaz Ahmad. "Adsorption-Based Atmospheric Water Harvesting: Technology Fundamentals and Energy-Efficient Adsorbents." In Technology in Agriculture [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97301.

Full text
Abstract:
Nowadays, atmospheric water harvesting (AWH) became very essential to provide fresh potable water. This technique is in practice since 1900 (US661944A) by Edger S. Belden. Atmospheric water is a source of freshwater with 13000 trillion liters availability of water at any time and can be utilized in overcoming water shortage, especially in arid and rural areas. It holds up the water molecules in the form of vapors and accounts for adding 10% of all freshwater present on the earth. Mainly, the two most common methods have been used for the extraction of atmospheric water. First, the ambient air is cooled below the dew point temperature, and second in which the moisture in atmospheric air is adsorbed/absorbed using desiccant materials. Conventional vapor compression, thermoelectric cooling, dew, and fog water harvesting based systems/technologies possess some limits in terms of energy requirements, less efficiency, and high cost. However, the adsorption based AWH technology is relatively cheaper, environment friendly, and can be operated by a low-grade thermal energy source. The limited availability of commercial instruments to harvest atmospheric water using adsorbents indicates a lack of fundamental studies. The fundamental research on water adsorption, adsorption kinetics, regeneration conditions, and water collecting surface designs has not gained as much interest as required in the field of atmospheric water harvesting. In this regard, this book chapter discusses and presents the progress in the field of adsorbent materials and system designs along with the future directions to accelerate the commercialization of this technology.
APA, Harvard, Vancouver, ISO, and other styles
10

Del Genio, Anthony D. "GCM Simulations of Cirrus for Climate Studies." In Cirrus. Oxford University Press, 2002. http://dx.doi.org/10.1093/oso/9780195130720.003.0019.

Full text
Abstract:
One of the great challenges in predicting the rate and geographical pattern of climate change is to faithfully represent the feedback effects of various cloud types that arise via different mechanisms in different parts of the atmosphere. Cirrus clouds are a particularly uncertain component of general circulation model (GCM) simulations of long-term climate change for a variety of reasons, as detailed below. First, cirrus encompass a wide range of optical thicknesses and altitudes. At one extreme are the thin tropopause cirrus that barely affect the short-wave albedo while radiating to space at very cold temperatures, producing a net positive effect on the planetary radiation balance and causing local upper troposphere warming, thus stabilizing the lapse rate. At the other extreme are thick cumulus anvil cirrus whose bases descend to the freezing level; these clouds produce significant but opposing short-wave and long-wave effects on the planetary energy balance while cooling the surface via their reflection of sunlight. In fact, satellite climatologies show a continuum of optical thicknesses between these two extremes (Rossow and Schiffer 1991). In a climate change, the net effect of cirrus might either be a positive or a negative feedback, depending on the sign and magnitude of the cloud cover change in each cloud-type category and the direction and extent of changes in their optical properties (see Stephens et al. 1990). Second, the dynamic processes that create cirrus are poorly resolved and different in different parts of the globe. In the tropics, small-scale convective transport of water from the planetary boundary layer to the upper troposphere is the immediate source of a significant fraction of the condensate in mesoscale cirrus anvils (see Gamache and Houze 1983), and ultimately the source of much of the water vapor that condenses out in large-scale uplift to form thinner cirrus. However, many observed thin cirrus cannot directly be identified with a convective source, suggesting that in situ upper troposphere dynamics and regeneration processes within cirrus (see Starr and Cox 1985) are important. In mid-latitudes, although summertime continental convection is a source of cirrus, in general cirrus is associated with mesoscale frontal circulations in synoptic-scale baroclinic waves and jet streaks (see Starr and Wylie 1990; Mace et al. 1995).
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Regenerative Cooling"

1

Si, Junping, Mingyan Tong, Wenhua Yang, and Gang Huang. "Study on Thermal Characteristics of the Regenerative Heat Exchanger." In 2016 24th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icone24-60380.

Full text
Abstract:
The regenerative heat exchanger is widely used in nuclear power plants and research reactors. It is composed of the regeneration section and the cooling section. The heat transfer mainly occurs at the cooling section, while the regeneration section is designed to reduce the temperature difference between the hot and cold fluids and weaken the damage to the heat exchanger due to the existence of thermal stress. Meanwhile, some heat is also can be recovered through the regeneration section. This paper mainly aims to analyze the thermal characteristics of the regenerative heat exchanger according to its structure properties, and provides some suggestions for regenerative heat exchanger design based on the influence of some key factors on thermal characteristics. The results show that improving the outlet temperature in the regeneration section primary side can both reduce the heat exchange areas of the regeneration section and the cooling section, but this will rise thermal shock and increase the operation safety risk. The baffles arrangement will enhance heat exchange capacity, and the heat exchange area decreases with the baffle gap height increasing. With the heat exchange area margin of the regeneration section improvement, the actual power will gradually reduce. The measures, including increasing secondary water flow or taking a corresponding margin about 52.8%∼59.2% that of the regeneration section for the cooling section heat exchange area, can be taken to overcome the adverse effects of the margin on the regenerative heat exchanger. More heat exchange areas of the regeneration section and the cooling section are required to satisfy the rated power with the fouling thermal resistance of the primary water increasing. Moreover, adopting a lower fouling coefficient favors the generative heat exchanger running under the design power.
APA, Harvard, Vancouver, ISO, and other styles
2

Jialong Ji and Bing Sun. "Life analysis of regenerative-cooling thrust chamber." In 2014 ISFMFE - 6th International Symposium on Fluid Machinery and Fluid Engineering. Institution of Engineering and Technology, 2014. http://dx.doi.org/10.1049/cp.2014.1217.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Naraghi, Mohammad, Stu Dunn, and Doug Coats. "Dual Regenerative Cooling Circuits for Liquid Rocket Engines." In 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-4367.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kirthika, G., and S. Charles Raja. "Automation of regenerative compressor cooling system using microcontroller." In 2015 International Conference on Circuit, Power and Computing Technologies (ICCPCT). IEEE, 2015. http://dx.doi.org/10.1109/iccpct.2015.7159509.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Parris, Daniel, and Brian Landrum. "Effect of Tube Geometry on Regenerative Cooling Performance." In 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-4301.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kawashima, Hideto, Akinaga Kumakawa, Takuo Onodera, et al. "Combustion and Regenerative Cooling Characteristics of LOX/Methane Engine." In 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-4837.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Carpenter, Cassandra, Shashi Verma, and Jayanta S. Kapat. "Numerical Study of Enhancement of Regenerative Cooling Using Ribs." In 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-3996.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Taddeo, Lucio, Nicolas Gascoin, Ivan Fedioun, Khaled Chetehouna, Ludovic Lamoot, and Guillaume Fau. "High-End Experiments on Regenerative Cooling: Test Bench Design." In 20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference. American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-3664.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Minato, Ryojiro, Kazuyuki Higashino, Masatoshi Sugioka, Takeo Kobayashi, Shunsuke Ooya, and Yosuke Sasayama. "LNG Rocket Engine with Coking Inhibited Regenerative Cooling System." In 16th AIAA/DLR/DGLR International Space Planes and Hypersonic Systems and Technologies Conference. American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-7392.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ji, Jialong, and Bing Sun. "Research on Structural Optimization for Regenerative-Cooling Thrust Chamber." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-09332.

Full text
Abstract:
A regenerative-cooling liquid rocket engine chamber is applied as the study object, and the heat transfer models are established to get the distributions of chamber parameters. A thermal-fatigue simulation is carried out go get the strain of the throat section with the thermal field and pressure field applied as the boundary conditions of a two-dimensional finite-element model. A usage factor is used for the life estimation of chamber, and the structural parameters of cooling channels are optimized aiming for a smallest usage factor which means a longest life. The influence of parameter changes is researched in this paper respectively. Three methods, linear search method, conjugate gradient method and gradient free method are respectively applied for the structural parametric optimization of cooling channels. The result of the research shows that the optimized structures have a longer life than the initial one has.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Regenerative Cooling"

1

Naraghi, M. H., S. Dunn, and D. Coats. Dual Regenerative Cooling Circuits for Liquid Rocket Engines (Preprint). Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada454591.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Inacker-Mix, Patrick. Development of a Regenerative Amplifier for the Coherent electron Cooling Proof of Principle Experiment (CeC-PoP) at RHIC. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1438328.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography