الفهرس 
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Abstract
The present work is concerned with the calculation and measurement of the heat transfer in an oil-flame along a segmented, and water cooled model furnace.This model furnace has a cylindrical cross-section, and it consists of five inter changeable water cooling segments, each has a uniform inside diameter of 300 mm, and 440 mm in length , each individua-lly is cooled by awater jacket, thus enabling the measurement of the total wall heat flux distribution along the furnace length.
The furnace is oil fired by light fuel=Solar=jet emerging from a pressure jet atomizer surrounded by a swirling jet of combustion air.
Measurements of the gas temperature and the total heat transfer to the wall are carried out.The temperature is measured by means of awater cooled suction pyrometer .The total heat transmitted to the wall is measured by the conductivity-plug type heat flux meter.it is also, measuring the rate of enthalpy rise of the cooling water.
The effect of the operating parameters, such as the air –to –fuel mass ratio and the swirl angle of the combustion air on the heat transfer and heat liberation are investigated in the present work.