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Development of the internal thermal control system (ITCS) for International Space Station (ISS)

机译：国际空间站内部热控制系统（ITC）的开发（ISS）

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The International Space Station (ISS) internal thermal control system (ITCS) has been developed jointly by the Boeing Corporation, Huntsville, Alabama, and Honeywell Engines & Systems, Torrance, California, to meet ISS internal thermal control needs. The ITCS provides heat removal for the critical life support systems and thermal conditioning for numerous experiment racks. The ITCS will be fitted on a number of modules on the ISS. The first module, the US Laboratory Module, was launched in February 2001 and is now operational on the ISS. The dual-loop system is comprised of a low-temperature loop (LTL) and a moderate-temperature loop (MTL). Each loop has a pump package assembly (PPA), a system flow control assembly (SFCA), a three-way mixing valve (TWMV), several rack flow control assemblies (RFCA), cold plates, pressure sensors, temperature sensors, a pump bypass assembly (PBA), and a heat exchanger. In addition, the MTL has an additional TWMV, a payload regeneration heat exchanger (P/RHE) and a manual flow control valve (MFCV). The LTL has a service performance and checkout unit (SPCU) heat exchanger. The two loops are linked via one loop crossover assembly (LCA) providing cross loop capabilities and a single-PPA two- loop functionality. Honeywell Engines & Systems performed extensive qualification testing at the component level. The Boeing Company performed the system level qualification testing. Details of the system testing and verification are contained in paper.
机译：国际空间站（ISS）内部热控制系统（ITCS）已由波音公司，亨茨维尔，阿拉巴马州和霍尼韦尔发动机和系统，加利福尼亚州托尔徒，加利福尼亚州，以满足ISS内部热控制需求。 ITCS为临界寿命支持系统和众多实验架的热调节提供了热量去除。 ITCS将适用于ISS的许多模块。 2001年2月推出的美国实验室模块的第一个模块，现在正在开展ISS。双环系统由低温环（LT1）和中等温度环（MTL）组成。每个环路都有一个泵封装组件（PPA），一个系统流量控制组件（SFCA），三通混合阀（TWMV），多个机架流量控制组件（RFCA），冷板，压力传感器，温度传感器，泵旁路组件（PBA）和热交换器。此外，MTL还具有额外的TWMV，有效载荷再生热交换器（P / RHE）和手动流量控制阀（MFCV）。 LTL具有服务性能和结帐单元（SPCU）热交换器。这两个循环通过一个环路交叉组件（LCA）链接，提供交叉循环能力和单PPA双循环功能。霍尼韦尔发动机和系统在组件级别进行了广泛的资格测试。波音公司进行了系统级资格测试。系统测试和验证的详细信息包含在纸中。

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