Example 5.2 Miniature Shell-and-Tube Heat Exchanger A miniature shell-and-tube heat exchanger is designed to cool engine oil in an engine with the engine coolant (50% ethylene glycol). The engine oil at a flow rate of 0.23 kg/s enters the exchanger at 120°C and leaves at 115°C. The 50% ethylene glycol at a rate of 0.47 kg/s enters at 90°C.
May 17, 2019 · Note, this overall heat transfer coefficient is calculated based on the outer tube surface area (Ao). So it must be multiplied by the Ao value for using in the overall heat transfer equation. Shell & tube heat exchanger calculations. We already saw that the design of a shell and tube heat exchanger is an iterative process. Shell and Tube Heat ExchangerObjectives Operate shell and tube heat exchanger varying steam flow Determine the outside overall heat transfer coefficient (U o) Determine shellside heat transfer (Q SS) Determine tubeside heat transfer (Q TS) Condense the objective into the primary objective(s). Do not list all tasks performed.
Increasing the tube-side heat transfer coefficient can provide increased heat transfer, based on the application. Potential Fouling Mitigation The elimination of shell-side baffles eliminates dead spots where sediment can accumulate and cover heat transfer surface area. CHAPTER 4 DESIGN FUNDAMENTALS OF SHELL-AND 4.2.1.4 Tube-Side Heat Transfer Coefficient The heat transfer coefficient for the tube-side is eed as follows:(k 4.7) i t t t d h =Nu where is the Nusselt number for the tube-side fluid which is found by using Eqs. (4.4) and (4.6), k is the thermal conductivity of the tube-side fluid, and is the tube inside diameter. Nut t di
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