Table of factors of evaporation.
| Feed temperature, | Steam pressure in pounds per square inch, gauge. | |||||||
| °F. | 30 | 50 | 70 | 80 | 90 | 100 | 110 | 120 |
| 32....... | 1.2073 | 1.2144 | 1.2195 | 1.2216 | 1.2234 | 1.2251 | 1.2266 | 1.2279 |
| 35....... | 1.2042 | 1.2113 | 1.2164 | 1.2184 | 1.2203 | 1.2219 | 1.2235 | 1.2248 |
| 38....... | 1.2011 | 1.2082 | 1.2133 | 1.2153 | 1.2172 | 1.2188 | 1.2204 | 1.2217 |
| 41....... | 1.1980 | 1.2051 | 1.2102 | 1.2122 | 1.2141 | 1.2157 | 1.2173 | 1.2186 |
| 44....... | 1.1949 | 1.2020 | 1.2071 | 1.2091 | 1.2110 | 1.2126 | 1.2142 | 1.2155 |
| 47....... | 1.1918 | 1.1989 | 1.2040 | 1.2060 | 1.2079 | 1.2095 | 1.2111 | 1.2124 |
| 50....... | 1.1887 | 1.1958 | 1.2009 | 1.2029 | 1.2048 | 1.2064 | 1.2080 | 1.2093 |
| 53....... | 1.1856 | 1.1927 | 1.1978 | 1.1998 | 1.2017 | 1.2033 | 1.2049 | 1.2062 |
| 56....... | 1.1825 | 1.1896 | 1.1947 | 1.1967 | 1.1986 | 1.2002 | 1.2018 | 1.2031 |
| 59....... | 1.1794 | 1.1865 | 1.1916 | 1.1937 | 1.1955 | 1.1972 | 1.1987 | 1.2000 |
| 62....... | 1.1763 | 1.1835 | 1.1885 | 1.1906 | 1.1924 | 1.1941 | 1.1956 | 1.1970 |
| 65....... | 1.1733 | 1.1804 | 1.1854 | 1.1875 | 1.1893 | 1.1910 | 1.1925 | 1.1939 |
| 68....... | 1.1702 | 1.1773 | 1.1823 | 1.1844 | 1.1862 | 1.1879 | 1.1894 | 1.1908 |
| 71....... | 1.1671 | 1.1742 | 1.1792 | 1.1813 | 1.1832 | 1.1848 | 1.1864 | 1.1877 |
| 74....... | 1.1640 | 1.1711 | 1.1762 | 1.1782 | 1.1801 | 1.1817 | 1.1833 | 1.1846 |
| 77....... | 1.1609 | 1.1680 | 1.1731 | 1.1751 | 1.1770 | 1.1786 | 1.1802 | 1.1815 |
| 80....... | 1.1578 | 1.1650 | 1.1700 | 1.1721 | 1.1739 | 1.1756 | 1.1771 | 1.1785 |
| 83....... | 1.1548 | 1.1619 | 1.1669 | 1.1690 | 1.1708 | 1.1725 | 1.1740 | 1.1754 |
| 86....... | 1.1518 | 1.1588 | 1.1638 | 1.1659 | 1.1678 | 1.1694 | 1.1710 | 1.1723 |
| 89....... | 1.1486 | 1.1557 | 1.1608 | 1.1628 | 1.1647 | 1.1663 | 1.1679 | 1.1692 |
| 92....... | 1.1455 | 1.1526 | 1.1577 | 1.1597 | 1.1616 | 1.1632 | 1.1648 | 1.1661 |
| 95....... | 1.1424 | 1.1495 | 1.1546 | 1.1566 | 1.1585 | 1.1602 | 1.1617 | 1.1630 |
| 98....... | 1.1393 | 1.1465 | 1.1515 | 1.1536 | 1.1554 | 1.1571 | 1.1586 | 1.1600 |
| 101....... | 1.1363 | 1.1434 | 1.1484 | 1.1505 | 1.1523 | 1.1540 | 1.1555 | 1.1569 |
| 104....... | 1.1332 | 1.1403 | 1.1453 | 1.1474 | 1.1492 | 1.1509 | 1.1525 | 1.1538 |
| 107....... | 1.1301 | 1.1372 | 1.1423 | 1.1443 | 1.1462 | 1.1478 | 1.1494 | 1.1507 |
| 110....... | 1.1270 | 1.1341 | 1.1392 | 1.1412 | 1.1431 | 1.1447 | 1.1463 | 1.1476 |
| 113....... | 1.1239 | 1.1310 | 1.1360 | 1.1382 | 1.1400 | 1.1417 | 1.1432 | 1.1445 |
| 116....... | 1.1209 | 1.1280 | 1.1330 | 1.1351 | 1.1369 | 1.1386 | 1.1401 | 1.1415 |
| 119....... | 1.1178 | 1.1249 | 1.1299 | 1.1320 | 1.1339 | 1.1355 | 1.1370 | 1.1384 |
| 122....... | 1.1147 | 1.1218 | 1.1269 | 1.1289 | 1.1308 | 1.1324 | 1.1340 | 1.1353 |
| 125....... | 1.1116 | 1.1187 | 1.1238 | 1.1258 | 1.1277 | 1.1293 | 1.1309 | 1.1322 |
| 128....... | 1.1085 | 1.1156 | 1.1207 | 1.1227 | 1.1246 | 1.1262 | 1.1278 | 1.1291 |
| 131....... | 1.1054 | 1.1125 | 1.1176 | 1.1197 | 1.1215 | 1.1232 | 1.1247 | 1.1260 |
| 134....... | 1.1023 | 1.1095 | 1.1145 | 1.1166 | 1.1184 | 1.1201 | 1.1216 | 1.1230 |
| 137....... | 1.0993 | 1.1064 | 1.1114 | 1.1135 | 1.1153 | 1.1170 | 1.1185 | 1.1199 |
| 140....... | 1.0962 | 1.1033 | 1.1083 | 1.1104 | 1.1123 | 1.1139 | 1.1154 | 1.1168 |
| 143....... | 1.0931 | 1.1002 | 1.1052 | 1.1073 | 1.1092 | 1.1108 | 1.1124 | 1.1137 |
| 146....... | 1.0900 | 1.0971 | 1.1022 | 1.1042 | 1.1061 | 1.1077 | 1.1093 | 1.1106 |
| 149....... | 1.0869 | 1.0940 | 1.0991 | 1.1011 | 1.1030 | 1.1046 | 1.1062 | 1.1075 |
| 152....... | 1.0838 | 1.0909 | 1.0960 | 1.0980 | 1.0999 | 1.1015 | 1.1031 | 1.1044 |
| 155....... | 1.0807 | 1.0878 | 1.0929 | 1.0950 | 1.0968 | 1.0985 | 1.1000 | 1.1013 |
| 158....... | 1.0776 | 1.0847 | 1.0898 | 1.0919 | 1.0937 | 1.0954 | 1.0969 | 1.0982 |
| 161....... | 1.0745 | 1.0817 | 1.0867 | 1.0888 | 1.0906 | 1.0923 | 1.0938 | 1.0952 |
| 164....... | 1.0715 | 1.0786 | 1.0836 | 1.0857 | 1.0875 | 1.0892 | 1.0907 | 1.0921 |
| 167....... | 1.0684 | 1.0755 | 1.0805 | 1.0826 | 1.0844 | 1.0861 | 1.0876 | 1.0890 |
| 170....... | 1.0653 | 1.0724 | 1.0774 | 1.0795 | 1.0813 | 1.0830 | 1.0845 | 1.0859 |
| 172....... | 1.0632 | 1.0703 | 1.0754 | 1.0774 | 1.0793 | 1.0809 | 1.0825 | 1.0838 |
| 174....... | 1.0611 | 1.0683 | 1.0733 | 1.0754 | 1.0772 | 1.0789 | 1.0804 | 1.0817 |
| 176....... | 1.0591 | 1.0662 | 1.0712 | 1.0733 | 1.0752 | 1.0768 | 1.0783 | 1.0797 |
| 178....... | 1.0570 | 1.0641 | 1.0692 | 1.0712 | 1.0731 | 1.0747 | 1.0763 | 1.0776 |
| 180....... | 1.0549 | 1.0621 | 1.0671 | 1.0692 | 1.0710 | 1.0727 | 1.0742 | 1.0756 |
| 182....... | 1.0529 | 1.0600 | 1.0650 | 1.0671 | 1.0690 | 1.0706 | 1.0721 | 1.0735 |
| 184....... | 1.0508 | 1.0579 | 1.0630 | 1.0650 | 1.0669 | 1.0685 | 1.0701 | 1.0714 |
| 186....... | 1.0488 | 1.0559 | 1.0609 | 1.0630 | 1.0648 | 1.0665 | 1.0680 | 1.0694 |
| 188....... | 1.0467 | 1.0538 | 1.0588 | 1.0609 | 1.0628 | 1.0644 | 1.0660 | 1.0673 |
| 190....... | 1.0446 | 1.0517 | 1.0568 | 1.0588 | 1.0607 | 1.0623 | 1.0639 | 1.0652 |
| 192....... | 1.0425 | 1.0497 | 1.0547 | 1.0568 | 1.0586 | 1.0603 | 1.0618 | 1.0632 |
| 194....... | 1.0405 | 1.0476 | 1.0526 | 1.0547 | 1.0566 | 1.0582 | 1.0597 | 1.0611 |
| 196....... | 1.0384 | 1.0455 | 1.0506 | 1.0526 | 1.0545 | 1.0561 | 1.0577 | 1.0590 |
| 198....... | 1.0363 | 1.0435 | 1.0485 | 1.0506 | 1.0524 | 1.0541 | 1.0556 | 1.0570 |
| 200....... | 1.0343 | 1.0414 | 1.0464 | 1.0485 | 1.0504 | 1.0520 | 1.0535 | 1.0549 |
| 202....... | 1.0322 | 1.0393 | 1.0444 | 1.0464 | 1.0483 | 1.0499 | 1.0515 | 1.0528 |
| 204....... | 1.0301 | 1.0372 | 1.0423 | 1.0444 | 1.0462 | 1.0479 | 1.0494 | 1.0507 |
| 206....... | 1.0281 | 1.0352 | 1.0402 | 1.0423 | 1.0441 | 1.0458 | 1.0473 | 1.0487 |
| 208....... | 1.0260 | 1.0331 | 1.0381 | 1.0402 | 1.0421 | 1.0437 | 1.0453 | 1.0466 |
| 210....... | 1.0239 | 1.0310 | 1.0361 | 1.0381 | 1.0400 | 1.0416 | 1.0432 | 1.0445 |
| 212....... | 1.0218 | 1.0290 | 1.0340 | 1.0361 | 1.0379 | 1.0396 | 1.0411 | 1.0425 |
Table of factors of evaporation—Concluded.
| Feed temperature, | Steam pressure in pounds per square inch, gauge. | |||||||
| °F. | 130 | 140 | 150 | 160 | 170 | 180 | 190 | 200 |
| 32....... | 1.2292 | 1.2304 | 1.2315 | 1.2324 | 1.2333 | 1.2342 | 1.2351 | 1.2358 |
| 35....... | 1.2261 | 1.2273 | 1.2283 | 1.2293 | 1.2302 | 1.2311 | 1.2320 | 1.2327 |
| 38....... | 1.2230 | 1.2242 | 1.2252 | 1.2262 | 1.2271 | 1.2280 | 1.2288 | 1.2296 |
| 41....... | 1.2199 | 1.2211 | 1.2221 | 1.2231 | 1.2240 | 1.2249 | 1.2257 | 1.2265 |
| 44....... | 1.2168 | 1.2180 | 1.2190 | 1.2200 | 1.2209 | 1.2218 | 1.2226 | 1.2234 |
| 47....... | 1.2137 | 1.2149 | 1.2159 | 1.2168 | 1.2178 | 1.2187 | 1.2195 | 1.2202 |
| 50....... | 1.2106 | 1.2118 | 1.2128 | 1.2137 | 1.2147 | 1.2156 | 1.2164 | 1.2171 |
| 53....... | 1.2075 | 1.2087 | 1.2097 | 1.2107 | 1.2116 | 1.2125 | 1.2133 | 1.2141 |
| 56....... | 1.2044 | 1.2056 | 1.2066 | 1.2076 | 1.2085 | 1.2094 | 1.2102 | 1.2110 |
| 59....... | 1.2013 | 1.2025 | 1.2035 | 1.2045 | 1.2054 | 1.2063 | 1.2072 | 1.2079 |
| 62....... | 1.1982 | 1.1994 | 1.2005 | 1.2014 | 1.2023 | 1.2032 | 1.2041 | 1.2048 |
| 65....... | 1.1951 | 1.1963 | 1.1974 | 1.1983 | 1.1992 | 1.2002 | 1.2010 | 1.2017 |
| 68....... | 1.1920 | 1.1933 | 1.1943 | 1.1952 | 1.1961 | 1.1971 | 1.1979 | 1.1986 |
| 71....... | 1.1889 | 1.1902 | 1.1912 | 1.1921 | 1.1931 | 1.1940 | 1.1948 | 1.1955 |
| 74....... | 1.1859 | 1.1871 | 1.1881 | 1.1890 | 1.1900 | 1.1909 | 1.1917 | 1.1924 |
| 77....... | 1.1828 | 1.1840 | 1.1850 | 1.1860 | 1.1869 | 1.1878 | 1.1886 | 1.1894 |
| 80....... | 1.1797 | 1.1809 | 1.1820 | 1.1829 | 1.1838 | 1.1847 | 1.1856 | 1.1863 |
| 83....... | 1.1766 | 1.1778 | 1.1789 | 1.1798 | 1.1807 | 1.1817 | 1.1825 | 1.1832 |
| 86....... | 1.1735 | 1.1748 | 1.1758 | 1.1767 | 1.1776 | 1.1786 | 1.1794 | 1.1801 |
| 89....... | 1.1704 | 1.1717 | 1.1727 | 1.1736 | 1.1746 | 1.1755 | 1.1763 | 1.1770 |
| 92....... | 1.1674 | 1.1686 | 1.1696 | 1.1705 | 1.1715 | 1.1724 | 1.1732 | 1.1739 |
| 95....... | 1.1643 | 1.1655 | 1.1665 | 1.1675 | 1.1684 | 1.1693 | 1.1701 | 1.1709 |
| 98....... | 1.1612 | 1.1624 | 1.1635 | 1.1644 | 1.1653 | 1.1662 | 1.1671 | 1.1678 |
| 101....... | 1.1581 | 1.1593 | 1.1604 | 1.1613 | 1.1622 | 1.1632 | 1.1640 | 1.1647 |
| 104....... | 1.1550 | 1.1563 | 1.1573 | 1.1582 | 1.1592 | 1.1601 | 1.1609 | 1.1616 |
| 107....... | 1.1519 | 1.1532 | 1.1542 | 1.1551 | 1.1561 | 1.1570 | 1.1578 | 1.1585 |
| 110....... | 1.1489 | 1.1501 | 1.1511 | 1.1521 | 1.1530 | 1.1539 | 1.1547 | 1.1555 |
| 113....... | 1.1458 | 1.1470 | 1.1481 | 1.1490 | 1.1499 | 1.1508 | 1.1515 | 1.1524 |
| 116....... | 1.1427 | 1.1439 | 1.1450 | 1.1459 | 1.1468 | 1.1478 | 1.1486 | 1.1493 |
| 119....... | 1.1396 | 1.1409 | 1.1419 | 1.1428 | 1.1437 | 1.1447 | 1.1455 | 1.1462 |
| 122....... | 1.1365 | 1.1378 | 1.1388 | 1.1397 | 1.1407 | 1.1416 | 1.1424 | 1.1431 |
| 125....... | 1.1335 | 1.1347 | 1.1357 | 1.1366 | 1.1376 | 1.1385 | 1.1393 | 1.1400 |
| 128....... | 1.1304 | 1.1316 | 1.1326 | 1.1336 | 1.1345 | 1.1354 | 1.1362 | 1.1370 |
| 131....... | 1.1273 | 1.1285 | 1.1295 | 1.1305 | 1.1314 | 1.1323 | 1.1332 | 1.1339 |
| 134....... | 1.1242 | 1.1254 | 1.1265 | 1.1274 | 1.1283 | 1.1292 | 1.1301 | 1.1308 |
| 137....... | 1.1211 | 1.1224 | 1.1234 | 1.1243 | 1.1252 | 1.1262 | 1.1270 | 1.1277 |
| 140....... | 1.1180 | 1.1193 | 1.1203 | 1.1212 | 1.1221 | 1.1231 | 1.1239 | 1.1246 |
| 143....... | 1.1149 | 1.1162 | 1.1172 | 1.1181 | 1.1191 | 1.1200 | 1.1208 | 1.1215 |
| 146....... | 1.1119 | 1.1131 | 1.1141 | 1.1150 | 1.1160 | 1.1169 | 1.1177 | 1.1184 |
| 149....... | 1.1088 | 1.1100 | 1.1110 | 1.1120 | 1.1129 | 1.1138 | 1.1146 | 1.1154 |
| 152....... | 1.1057 | 1.1069 | 1.1079 | 1.1089 | 1.1098 | 1.1107 | 1.1115 | 1.1123 |
| 155....... | 1.1026 | 1.1038 | 1.1048 | 1.1058 | 1.1067 | 1.1076 | 1.1085 | 1.1092 |
| 158....... | 1.0995 | 1.1007 | 1.1018 | 1.1027 | 1.1036 | 1.1045 | 1.1054 | 1.1061 |
| 161....... | 1.0964 | 1.0976 | 1.0987 | 1.0996 | 1.1005 | 1.1014 | 1.1023 | 1.1030 |
| 164....... | 1.0933 | 1.0945 | 1.0956 | 1.0965 | 1.0974 | 1.0984 | 1.0992 | 1.0999 |
| 167....... | 1.0902 | 1.0914 | 1.0925 | 1.0934 | 1.0943 | 1.0953 | 1.0961 | 1.0968 |
| 170....... | 1.0871 | 1.0883 | 1.0894 | 1.0903 | 1.0912 | 1.0922 | 1.0930 | 1.0937 |
| 172....... | 1.0850 | 1.0863 | 1.0873 | 1.0882 | 1.0892 | 1.0901 | 1.0909 | 1.0916 |
| 174....... | 1.0830 | 1.0842 | 1.0853 | 1.0862 | 1.0871 | 1.0880 | 1.0889 | 1.0896 |
| 176....... | 1.0809 | 1.0822 | 1.0832 | 1.0841 | 1.0850 | 1.0860 | 1.0868 | 1.0875 |
| 178....... | 1.0789 | 1.0801 | 1.0811 | 1.0820 | 1.0830 | 1.0839 | 1.0847 | 1.0854 |
| 180....... | 1.0768 | 1.0780 | 1.0791 | 1.0800 | 1.0809 | 1.0818 | 1.0827 | 1.0834 |
| 182....... | 1.0747 | 1.0760 | 1.0770 | 1.0779 | 1.0788 | 1.0798 | 1.0806 | 1.0813 |
| 184....... | 1.0727 | 1.0739 | 1.0749 | 1.0759 | 1.0768 | 1.0777 | 1.0785 | 1.0793 |
| 186....... | 1.0706 | 1.0718 | 1.0729 | 1.0738 | 1.0747 | 1.0756 | 1.0765 | 1.0772 |
| 188....... | 1.0685 | 1.0698 | 1.0708 | 1.0717 | 1.0727 | 1.0736 | 1.0744 | 1.0751 |
| 190....... | 1.0665 | 1.0677 | 1.0687 | 1.0697 | 1.0706 | 1.0715 | 1.0723 | 1.0731 |
| 192....... | 1.0644 | 1.0656 | 1.0667 | 1.0676 | 1.0685 | 1.0694 | 1.0703 | 1.0710 |
| 194....... | 1.0623 | 1.0636 | 1.0646 | 1.0655 | 1.0664 | 1.0674 | 1.0682 | 1.0689 |
| 196....... | 1.0603 | 1.0615 | 1.0625 | 1.0635 | 1.0644 | 1.0653 | 1.0661 | 1.0669 |
| 198....... | 1.0582 | 1.0594 | 1.0605 | 1.0614 | 1.0623 | 1.0632 | 1.0641 | 1.0648 |
| 200....... | 1.0561 | 1.0574 | 1.0584 | 1.0593 | 1.0602 | 1.0612 | 1.0620 | 1.0627 |
| 202....... | 1.0541 | 1.0553 | 1.0563 | 1.0572 | 1.0582 | 1.0591 | 1.0599 | 1.0606 |
| 204....... | 1.0520 | 1.0532 | 1.0542 | 1.0552 | 1.0561 | 1.0570 | 1.0579 | 1.0586 |
| 206....... | 1.0499 | 1.0511 | 1.0522 | 1.0531 | 1.0540 | 1.0550 | 1.0558 | 1.0565 |
| 208....... | 1.0478 | 1.0491 | 1.0501 | 1.0510 | 1.0520 | 1.0529 | 1.0537 | 1.0544 |
| 210....... | 1.0458 | 1.0470 | 1.0480 | 1.0490 | 1.0499 | 1.0508 | 1.0516 | 1.0524 |
| 212....... | 1.0437 | 1.0449 | 1.0460 | 1.0469 | 1.0478 | 1.0487 | 1.0496 | 1.0503 |
PUBLICATIONS ON THE UTILIZATION OF COAL AND LIGNITE.
A limited supply of the following publications of the Bureau of Mines has been printed and is available for free distribution until the edition is exhausted. Requests for all publications can not be granted, and to insure equitable distribution applicants are requested to limit their selection to publications that may be of especial interest to them. Requests for publications should be addressed to the Director, Bureau of Mines.
The Bureau of Mines issues a list showing all its publications available for free distribution, as well as those obtainable only from the Superintendent of Documents, Government Printing Office, on payment of the price of printing. Interested persons should apply to the Director, Bureau of Mines, for a copy of the latest list.