Forced convection in concentric sphere heat exchangers

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1966

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An experimental investigation of the spherical heat exchanger has been conducted. The geometry consists of two concentric spheres with fluid flowing through the annulus between the spheres. For the case of forced convection, the fluid enters and exits the annulus through diametrically opposed openings in the outer sphere. The sphere is unique since it provides a maximum volume per unit surface area and is an ideal system when a condition of maximum capacity with minimum exposed surface is required. Four different sphere-size combinations are studied experimentally to determine the characteristics of the concentric-sphere heat exchanger; the inner sphere is a constant-temperature heat source; water flows through the annulus as a coolant. [...]

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