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在进行计算机辅助热工设计计算时,需要反复使用不同压力、温度条件下的热工及迁移参数。本文利用微型机的磁盘文件功能建立数据文件,使用查找及计算程序获得所需要的水、水蒸汽的物性参数。除超临界范围有少数区域以外,其余各点的计算结果均在国际水蒸汽性质会议公布的数椐允差以内。在 S/09微型机上使用时,平均查找一个参数的时间不超过1秒。查找计算程序简洁,占内存6K字节(8位机)。
In the computer-aided thermal design calculations, the need to repeatedly use different pressure and temperature conditions of the thermal and migration parameters. In this paper, the use of microcomputer disk file function to create data files, using the search and calculation procedures to obtain the required water, water vapor physical parameters. Except for a few regions in the supercritical range, the results of other points are within the numerical tolerances promulgated by the International Conference on Water Vapor Properties. When used on a S / 09 microcomputer, the average time it takes to find a parameter is less than 1 second. Finding a simple calculation program, accounting for 6K bytes of memory (8-bit machine).