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首页> 外文OA文献 >The Heat Exchanger Performance of Shell and Multi Tube Helical Coil as a Heater Through the Utilization of a Diesel Machine\u27s Exhaust Gas
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The Heat Exchanger Performance of Shell and Multi Tube Helical Coil as a Heater Through the Utilization of a Diesel Machine\u27s Exhaust Gas

机译：利用柴油机尾气的壳和多管螺旋盘管作为加热器的换热器性能

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摘要

A review on reutilization of heat waste from a diesel machine is absolutely important. This is because the exhaust gas potential of a Diesel machine keeps increasing and not much has been utilized by the industry. One of the techniques of reutilizing the heat waste in industry is by using a heat exchanger. The technique is also very useful for the environment because it can reduce air pollution caused by the exhaust gas of the diesel machine. The main purpose of the research is to find out the capability of shell and multi-tube helical coil HE as an air heater by utilizing the exhaust gas of the Diesel machine. The heat exchanger of shell and multi-tube helical coil utilizes the exhaust thermal gas of the Diesel machine as the air heater already made. The apparatus has the following dimension: the shell length of 1.05 m, diameter 0.1524 m, tube length of 3.25 m with 20 coils, tube diameter of 0.011 m, coil diameter of 0.0508 m with 4 helical coils. The type of Diesel machine to use in the testing is 4FB1 Isuzu Diesel engine. The machine has the maximum machine power and rotation of 54 kW and 3,600 rpm. The performance testing of heat exchanger has been conducted in some variations of Diesel machine rotations of 1,500 rpm, 1,750 rpm, 2,000 rpm, 2,250 rpm and 2,500 rpm. The testing result shows a maximum effectiveness to happen at the machine rotation of 1,500 rpm. The maximum effectiveness to get is 67.8% and then it goes down drastically in accordance with the increase of air mass flow rate. The hot air temperature created is from 47.1°C to 52.3°C so that it can be used for the purpose of drying up the unhulled rice.
机译：对柴油机废热的再利用进行审查非常重要。这是因为柴油机的废气潜能一直在增加，并且在工业上没有被充分利用。在工业中重新利用热量的技术之一是使用热交换器。该技术对环境也非常有用，因为它可以减少由柴油机废气引起的空气污染。研究的主要目的是通过利用柴油机的废气来发现壳和多管螺旋线圈HE作为空气加热器的能力。壳体和多管螺旋线圈的热交换器利用柴油机的废气作为已经制成的空气加热器。该装置具有以下尺寸：壳长1.05 m，直径0.1524 m，带20个盘管的管长3.25 m，管直径0.011 m，带4个螺旋盘管的管径0.0508 m。测试中使用的柴油机类型为4FB1五十铃柴油机。该机器的最大机器功率为54 kW和3,600 rpm。在柴油机转速为1,500 rpm，1,750 rpm，2,000 rpm，2,250 rpm和2,500 rpm的一些变化中进行了热交换器的性能测试。测试结果表明，在1,500 rpm的机器转速下，其效率最高。获得的最大效率为67.8％，然后随着空气质量流量的增加而急剧下降。产生的热空气温度为47.1°C至52.3°C，因此可用于干燥未去壳的大米。

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