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close this bookManaging Water for Peace in the Middle East: Alternative Strategies (UNU, 1995, 309 pages)
View the documentNote to the reader from the UNU
View the documentAbbreviations
Open this folder and view contents1. Introduction
Open this folder and view contents2. Review studies on arid-zone hydrology and water-resources development and management
Open this folder and view contents3. Hydro-powered reverse-osmosis desalination in water-resources development in Kuwait
Open this folder and view contents4. Hydro-powered reverse-osmosis desalination in water-resources planning in Jordan
Open this folder and view contents5. Solar-hydro power and pumped-storage co-generation in hydro-powered reverse osmosis desalination in inter-state development of the Jordan River basin
Open this folder and view contents6. Summary of conclusions, and recommendations for further study 6 Summary of conclusions, and recommendations for further study
Open this folder and view contentsAppendices
View the documentConversion tables
View the documentReferences

Conversion tables

Lenght Area
m in ft in2 ft2
1 39.37 3.281 1 1,550 10.764
0.0254 1 0.08333 0.0006452 1 0.006944
0.3048 12 1 0.0929 144 1
0.303 11.93 0.9942 3.3058 5,124 35.58

Volume

in3 ft3 US gallons Imperial gallons
1 61,024 35.31 264.2 220.0
0.00001639 1 0.0005787 0.004329 0.003604
0.02832 1,728 1 7.481 6.228
0.003785 231 0.1337 1 0.8325
0.004547 277.5 0.1606 1.201 1
0.1&04 11,008 6.371 47.66 39.68

NOTE: 1 acre-foot = 1,234 m³.

Flow rate

m³/min m³/hour l/sec US gallons/min Imperial gallons/min ft3/min
1 60 16.67 264.2 222.0 35.31
0.01667 1 0.2778 4.403 3.666 0.5881
0.06 3.6 1 15.85 13.2 2.119
0.1804 10.82 3.007 47.66 39.68 6.371
0.003782 0.2271 0.0631 1 0.8235 0.1337
0.004547 0.2728 0.0578 1.201 1 0.1605
0.0283 1.699 0.472 7.481 6.229 1

Pressure

kg/cm² lb/in2 (psi) Standard atmospheric pressure Mercury column (m) Water column (m) Water column (ft)
1 14.22 0.9678 0.7355 10 0.1757
0.07031 1 0.0680 0.0517 0.7031 0.1782
1.0332 14.7 1 0.76 10.33 0.2389
1.359 19.34 1.3158 1 13.6 0.002343
0.1 1.422 0.09678 0.07355 1 0.0003239
0.03048 0.4335 0.0295 0.0224 0.3048 1

Power

French horse power (PS) British horse power (HP) kilowatt (kW) kg-m/see ft-lb/sec kcal/sec
1 0.9859 0.7055 75 542.5 0.1757
1.0143 1 0.746 76.07 550.2 0.1782
1.3596 1.3405 1 101.97 737.6 1.2389
0.01333 0.01315 0.009807 1 7.233 0.002343
0.001843 0.001817 0.001356 0.1383 1 0.0003239
5.691 5.611 4.186 426.9 3087 1

SI unit conversions

Symbol Unit Equivalents
N newton J/m m • kg • s-2
Pa Pascal N/m² m-1 kg s-2
J joule N.m m2 kg s-2
W watt J/s m².kg s-3

Quantity Unit symbol Other units and related conversions
Area hectare, ha = 10,000 m2
Volume litre, l = 10-3
Weight kg tonne, t = 1,000 kg
Density kg/m³  
Time s minute, m = 60 s
    hour, h = 3,600 s
    day, d = 86,400 s
Velocity m/s  
Pressure N/m² 1 kgf/cm² = 1 kp/cm² = 98,066.5 Pa