Design of a condensing system for steam

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1. Two configurations are being considered in the design of a condensing system for steam at 1 atm employing a vertical plate maintained at 90°C. The first configuration is a single vertical plate L X w and the second consists of two vertical plates (L/2) X w, where L and w are the vertical and horizontal dimen- sions, respectively. Which configuration would you choose?

2. The condenser of a steam power plant consists of a square (in-line) array of 625 tubes, each of 25-mm diameter. Consider conditions for which saturated steam at 0.105 bars condenses on the outer surface of each tube, while a tube wall temperature of 17°C is maintained by the flow of cooling water through the tubes. What is the rate of heat transfer to the water per unit length of the tube array? What is the correspond- ing condensation rate?

Reference no: EM13946414

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