دانلود رایگان مقاله لاتین سیستم خنک کننده آسپیراسیون از سایت الزویر
عنوان فارسی مقاله:
سیستم خنک کننده آسپیراسیون برای تنظیم درجه حرارت شیشه فر پیرولیتی
عنوان انگلیسی مقاله:
An aspirating cooling system for regulating temperature of pyrolytic oven glass
سال انتشار : 2017
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مقدمه انگلیسی مقاله:
1. Introduction
In the design of domestic ovens, one of the most important parameters is outer glass temperature, especially in pyrolytictype domestic ovens. Pyrolytic ovens have a self-cleaning function during which the temperature inside of the oven is increased over 500 C. When the temperature inside the oven reaches these values, any food residue and grime adhered to the walls is simply burned off. This feature provides great convenience for users. However, this high-temperature increase should be considered with regards to safety. The outer surface temperature of the oven should be reduced to a safe level not harmful to the environment and living beings. An aspirating cooling system (ACS) has been designed to reduce the temperature of the outer surface of the oven door. This system circulates air between panes through the door, thereby reducing the external surface temperature of the door by convective cooling. Here, the velocity of the suctioned air and the design of oven door are very important. If excessive cooling takes place, the temperature within the oven could decrease and affect the self-cleaning function. This would lead to low energy efficiency and performance of the door. Rek et al. [8] examined a newer generation, multifunctional oven and modeled radiative, conductive, natural and forced convective heat transfer mechanisms. They investigated many parameters that influence conditions inside an oven, such as the shape and power capacity of heaters, fan rotor rotational speeds, the thickness and quality of insulation and the design of the oven doors. Shaughnessy and Newborough studied radiative heat transfer mechanism of the oven door [9]. They suggested a lowemissivity oven (LEO) provides an energy efficient alternative to a conventional domestic electric ovens. Abraham and Sparrow [1] developed an algebraic method for predicting the time-based temperature variation of a thermal load situated in an electrically heated oven. Mistry et al. [6] studied transient, natural convective heat transfer in ovens. A computer-aided design using computational fluid dynamics and heat transfer (CFDHT) modeling of an electric oven involves a three dimensional, unsteady, natural convective flow-thermal field coupled with radiative heat transfer. Mistry et al. [7] developed a CFDHT-based methodology to evaluate the performance of a domestic gas oven. Fahey et al. [2] studied cooling on circuit of the door of a pyrolytic oven. They used CFD and experimental techniques to understand the flow behavior of the oven. The CFD results were validated with experimental hotwire velocity measurements. The study established an understanding on oven door’s cooling circuit but they did not determine the effect of it or determine the design parameters. Verboven et al. [13] investigated forced convection in an oven using CFDHT methods. They compared their numerical results with experimental results. Smolka et al. [11] investigated forced convection inside a drying oven by using experimentally validated three dimensional CFDHT analyses. To improve the temperature uniformity within the oven cavity, they changed parameters, such as the rotational speed of the device fan, the effectiveness of the distribution gaps and the rate of heat generated by the electric heaters. Smolka et al. also changed configurations, such as the locations of the heaters, the fan and the fan baffle. Overall, they improved the temperature uniformity and validated the results with an experimental test of the modified prototype.
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کلمات کلیدی:
Cooling System Optimization for a 3 Cylinder Naturally Aspirated ... papers.sae.org/2014-01-2338/ by V Kale - 2014 - Related articles Sep 30, 2014 - 10.4271/2014-01-2338. Citation: Kale, V., Dharan Raju, B., and Dhiman, V., "Cooling System Optimization for a 3 Cylinder Naturally Aspirated ... [PDF]Aspirating Smoke Detection Applications Guide - Notifier Fire Systems www.notifierfiresystems.co.uk/.../notifierfiresystems/.../AspiratingSmokeDetectors_Ap... FAAST Fire Alarm Aspiration Sensing Technology®. Aspirating ... Aspirating. Smoke Detection. Installation Materials and Pipe Hangers . ...... Vented/cooled. Naturally aspirated engine - Wikipedia https://en.wikipedia.org/wiki/Naturally_aspirated_engine A naturally aspirated engine is an internal combustion engine in which air intake depends solely on atmospheric pressure and which does not rely on forced ... [PDF]Aspirated Smoke Detectors https://www.utcfssecurityproductspages.eu/.../1017_Edwards_Aspiration_Brochure_E... gate system samples a fraction of the air while bypassing the rest, thereby ... LaserSense is a highly sophisticated High Sensitivity Aspirated Smoke Detection product that has been .... environments, cooling systems producing relatively high. Patent US2393899 - Engine cooling system - Google Patentsuche www.google.ch/patents/US2393899?hl=de Heretofore the cooling systems for such aircooled' airplane engines have ... hot spent cooling air is then withdrawn through passages or gills by the-aspirating ...
