Heat Transfer Coefficient Lab

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The three objectives of this experiment were to determine the experimental and theoretical overall heat transfer coefficient, the effects of insulation, and the number of fouled tubes in the shell and tube heat exchanger. The flow rates of the hot water supply to the tubes and the cold water supply to the shell were varied, and temperatures for the hot inlet, hot outlet, cold inlet, and cold outlet streams were recorded. These temperatures were recorded for each of the three experimental setups, which were no fouling or insulation, insulation with no fouling, and insulation with an unknown amount of fouling, then used to calculate the overall heat transfer coefficient. As the flow rates for the hot and cold side increased, the overall heat …show more content…
There are two main types of heat exchangers that are commonly used in the petrochemical, chemical, and food industries, shell and tube or plate and frame. Plate and frame heat exchangers are very efficient due to their large heat transfer area. However, shell and tube heat exchangers are often used in high pressure systems and processes in which the two streams are in different phases. This type of heat exchanger can be used in many different applications such as refineries, chemical industries and food industries (FEIZA 2014). In addition, more than 35-40% of the heat exchangers are shell and tube because extensive research and modeling has be conducted on shell and tube heat exchangers and they require easy and straightforward maintenance (Saeedan and Mehdi 2015). For this experiment, the shell and tube heat exchanger in the Unit Operations Laboratory was used.
In this experiment, a shell and tube heat exchanger with two passes on the tube side and one pass on the shell side was used. The objective of this experiment was to determine three things: 1) the overall heat transfer coefficient at different flow rates of cold and hot water, 2) the effects of adding fiberglass insulation to the shell side, and 3) the number of fouled tubes in the heat

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