XQ0901本报告提供了计算不同成分天然气热值的方法。此修订版包含Excel电子表格中的程序，用于以英制和国际单位制计算热值和其他相关计算。Excel中的程序以CD-ROM的形式提供给纸质版/CD-ROM和Print+PDF格式的购买者。购买“安全PDF”格式的购买者将在购买后立即收到可下载的补充文件。

XQ0901This report provides methods of calculating heating values of natural gas with different compositions. This revised version contains a program in Excel Spreadsheet for heating values and other related calculations, both in Imperial and SI units.The program in Excel is provided in a CD-ROM for purchasers of the Paper/CD-ROM and Print+PDF formats. Purchasers of the "Secure PDF" format will receive the program as downloadable supplemental files immediately after purchase.