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首页> 外文期刊>Materials at High Temperatures >Experience with an ODS high-temperature heat exchanger in a pilot-scale HiPPS plant
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Experience with an ODS high-temperature heat exchanger in a pilot-scale HiPPS plant

机译：在中试规模的HiPPS工厂中使用ODS高温热交换器的经验

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A very high-temperature heat exchanger (HTHX) composed of MA754 alloy is being tested in a coal-fired slagging furnace system at the University of North Dakota Energy & Environmental Research Center. The HTHX was designed and built by the United Technologies Research Center. It is composed of three 6-foot-long by 2(1/2)-inch-od tubes which were originally protected from the products of combustion by ceramic panels. It was used to produce process air at 950 deg C and 150 psig over 2000 hours of testing with a variety of coals. For a short time, conditions of 1100 deg C and 100 psig were reached. In later tests the bare alloy tubes were exposed directly to the products of combustion which increased heat exchange coefficients by five times suggesting the HTHX cost would be only 1/10 as much as with the ceramic panels. Laboratory tests of the alloy exposed directly to the coal slag showed recessions of 5-10 mils per year at up to 1150 deg C. The data suggest that a cost competitive power system could be built employing this technology.
机译：北达科他大学能源与环境研究中心正在用燃煤排渣炉系统对由MA754合金组成的高温热交换器（HTHX）进行测试。 HTHX由联合技术研究中心设计和制造。它由三个6英尺长，2（1/2）英寸外径的管组成，这些管最初由陶瓷面板保护免受燃烧产物的侵蚀。在用各种煤进行2000小时的测试后，它被用来在950摄氏度和150 psig的压力下生产工艺空气。在短时间内，达到了1100℃和100 psig的条件。在以后的测试中，裸露的合金管直接暴露于燃烧产物，使热交换系数增加了五倍，这表明HTHX的成本仅为陶瓷板的1/10。直接暴露于煤渣的合金的实验室测试表明，在高达1150摄氏度的条件下，每年会发生5-10密耳的衰退。数据表明，可以使用该技术构建具有成本竞争力的电源系统。

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