2 edition of Icing problems and the thermal anti-icing system found in the catalog.
Icing problems and the thermal anti-icing system
F. L. Boeke
in [n. p
Written in English
|Statement||by F. L. Boeke [and] R. A. Paselk.|
|Contributions||Paselk, R. A., joint author.|
|LC Classifications||TL557.I3 B6|
|The Physical Object|
|Pagination||42, 1, 3 numb. l.|
|Number of Pages||42|
|LC Control Number||45033040|
icing system only on the outer part of the blad e would enable significant decrease of heating energy costs. In order to optimize the design and power consumption of an electro-thermal de-icing system for wind turbine blades, an experimental setup was built and used to test the system under similar icing Anti-icing performance using the surface dielectric barrier discharge plasma actuator is studied using detailed visualization and surface thermal measurements. To reveal the physical mechanism of coupled aerodynamic and thermal effects on anti-icing, three types of actuators are designed and mounted on a NACA ://?journalCode=phf.
Anti-icing systems: The current computer model was designed to handle two different types of thermal anti-icing systems: the hot air type, and the electro-thermal type. In the hot air type systems, hot air is generally drawn from an intermediate or high stage compressor bleed port or provided by a heating system through a heat :// Ice mainly accretes from both sea spray and atmospheric icing, which can create problems for operational environment and safety of people working on offshore structures in cold regions. In this research a lab based experimental study has been carried out to preliminary design and test an intelligent thermal anti/de-icing ://
Wind turbine icing has been found to cause a variety of problems to the safe and efficient operations of wind turbines. Ice accretion on turbine blades would result in decreasing lift and increasing drag, thereby, leading to power reduction. The annual power loss due to icing was found to be 20 50% at harsh sites. Ice accretion and irregular ice shedding during wind turbine operation would G/abstract. This CFD modeling approach is also applied to a unique shielded swirl anti-icing system. The results of this study confirm that a shielded swirl anti-icing system can be designed to provide the same level of anti-icing protection that is achieved with a piccolo tube configuration without overheating the inlet or requiring more engine bleed ://
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Icing Problems and the Thermal Anti-Icing System. Computational and Experimental Investigation of Ice Accretion on the Surface of Rotorcraft Air Intake Anti-Icing :// The thermal control technique by using LHP anti-icing/de-icing system features a unique effect by effectively utilizing waste heat generated aboard aircraft to meet anti-icing/de-icing and heat dissipation requirements, conforming the ongoing energy-saving :// While anti-icing systems provides continuous ice removal effect, de-icing systems work only occasionally when the system is put into operation.
Conventional active de-icing/anti-icing systems utilize thermal energy such as hot air to melt the ice (Pourbagian and Habashi, ) or mechanical vibrations to repel the ice off the structure Thermal Anti-Icing System Xiaobin Shen 1,*, Qi Guo 1, Guiping Lin 1, Yu Zeng 1 and Zhongliang Hu 2 traditional conjugate heat transfer problems, the heat exchange between ﬂuid and solid domains is a ected by the runback water ﬁlm when it ﬂows backwards, evaporates, and :// Ice accretion may occur on the entry components of an aero-engine under certain weather and flight conditions, which would lead to the deterioration of the engine performance and even severe safety problems.
Anti-icing systems have been used including hot air anti-icing system, which consumes high pressure air from the compressor, and electronic heating system, which consumes high grade ?slug=fulltext.
Now de-icing and anti-icing methods of practical application at home and abroad are mainly manual removal, contact wire thermal running, chemical removal methods, resistive wire de-icing te chnology, etc.
Manual de-icing Removing snow and ice through human or machines is the most simple and primitive :// A novel electro-thermal anti-icing system for fiber-reinforced polymer composite airfoils Cold Regions Science and Technology, Vol.
87 CFD-Based Optimization of Electro-Thermal Wing Ice Protection Systems in De-Icing Mode As the name indicates, anti-icing systems prevent the formation of ice (aircraft surfaces) while the de-icing systems remove the ice after it is formed. Anti-icing systems can be active or passive.
In general, most of the active anti-icing systems are thermal, which use the engine bleed air routed through the pipes in wings, engine intakes :// /what-is-the-difference-between-deice-and-anti-ice.
What methods are used to supply heat for thermal anti-icing systems. Turbine compressor bleed air, engine exhaust heat exchangers, and ram air heated by a combustion heater. How is the temperature maintained in a thermal anti-icing system. What are several problems associated with electrically-heated windshields.
Delamination, scratches Start studying ICE AND RAIN CONTROL SYSTEMS (PTS). Learn vocabulary, terms, and more with flashcards, games, and other study :// Chang S, Liu D, Yuan X () Helicopter rotor blade anti/de-icing system protection scope study.
J Aerosp Power 22(3)– (in Chinese) Google Scholar To simulate aircraft thermal anti-icing systems and solve the conjugate heat transfer of air-droplet flow and solid skin, the heat and mass transfer model of the runback water on the anti-icing surface was combined with the heat conduction equation of the skin by loosely coupled methods.
According to the boundary conditions used for the runback water conservation equations, two loose-coupling Passive anti-icing surfaces, or icephobic surfaces, are an area of great interest because of their significant economic, energy and safety implications in the prevention and easy removal of ice in This book addresses the key concerns regarding the operation of wind turbines in cold climates, and focuses in particular on the analysis of icing and methods for its mitigation.
and thermal anti-icing system design. In each chapter, care is taken to build systematically on the basic knowledge, providing the reader with the level of detail A newer type of thermal anti-ice system referred to as ThermaWing uses electrically heated graphite foil laminate applied to the leading edge of the wing and horizontal stabilizer; Carburetor heat is considered both anti and de-icing, however, could cause more problems if the ice re-freezes beyond the Venturi when the air expands; Infrared thermography study of a thermal anti-icing system BY BUCHLIN J-M.
", PRETREL H. ", PLANQUART H.*, LANGER H.o and THIRY F.o * von Karman Institute for Fluid Dynamics, Rhode-Saint-Genese, Belgium o SONACA, Gosselies, Belgium Abstract This paper deals with the mapping of the convective heat transfer in a multijet The paper proposes a coupled methodology able to simulate and optimize the performance of an elec- trothermal anti-icing system in an integrated fashion: in fact, the classical tool chain of icing simulation (aerodynamics, water catch and impact, mass and energy surface balance) is coupled to the thermal analysis through the surface substrate and the ice :// Gas turbines that are installed in areas where icing conditions could exist shall be equipped with an anti-icing system.
In general, ambient temperature dropping below 4ºC (39 ºF) with high humidity could be subject to icing problems. Icing could induce very significant pressure drop in the inlet air filter house which leads to gas turbine power output deterioration.
This article is an The aim is to demonstrate the importance of accounting for the conduction–convection conjugation in more complex models that attempt to predict the thermal behavior of the anti-icing system of Anti-icing systems.
Icing is a major concern for year-round operation in cold climate regions. Platform ice accretion is caused by atmospheric icing and sea-water spray icing. By installing anti-icing and de-icing systems for helidecks, gangways etc., icing problems on your platform are :// /production-platform-heating-systems.
A mathematical model of a hot air anti-icing system and its implementation in the ice accretion simulation code CANICE are presented. The icing code is used to predict the surface temperature and This work reviews theoretical-experimental studies undertaken at COPPE/UFRJ on conjugated heat transfer problems associated with the transient thermal behavior of heated aeronautical Pitot tubes and wing sections with anti-icing systems.
One of the main objectives is to demonstrate the importance of accounting for the conduction- convection conjugation in more complex models that thermal ice protection system, must be accounted for. Icing analysis is required to determine the size and location of ice shapes that would occur during the minute hold.
Those shapes are compared with icing shapes created during climb, cruise, and descent conditions to determine the most critical icing flight regime for the ://