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Absolute and kinematic viscosity of air at temperatures ranging -40 to 1,000 deg C (-40 to 1,500 deg F) at standard atmospheric pressure - in Imperial and SI Units
The density and the specific volume of air varies with the elevation above sea level
Density and specific weight of air at temperatures ranging -40 to 1,000 deg C (-40 to 1,500 deg F) at standard atmospheric pressure - in Imperial and SI Units
Air temperature and volume correction compared with Normal Air Conditions
Inlet pipe size and maximum air flow
Air volume passing through orifices
Air properties - temperature, density, specific heat, thermal conductivity, expansion coefficient, kinematic viscosity and Prandtl number for temperatures between -150oC and 400oC.
Thermodynamic properties of air at low pressures - in imperial units
Average air requirements of some common air tools or equipments
Materials approved for gas pipes
Perfect gas and Boyles law
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Capacity of compressed air pipelines - applied pressure ranging 5 - 250 psi (0.5 - 17 bar)
Perfect gas and Charles law
Classification as Oxidizers, Inert gases and Flammable gases
Compressed air laboratory demand and diversity
A glossary of common used terms for compressed air
Fittings in compressed air pipe lines and equivalent length pressure drop
Calculate pressure drop in compressed air pipe lines - online calculator and spreadsheet for download - metric and imperial units
Pressure drop in compressed air pipelines - applied pressure 50, 100 and 150 psi
Pressure drop in compressed air pipe lines
Pressure drop in compressed air pipe lines - nomograph diagram
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Power, instrumentation, process and breathing air
Calculating receivers in compressed air systems
Calculate the storage volume of a compressed gas
Yearly air compressor power costs
An online control valve - Cv - calculator for gases
Gibbs-Daltons law of partial pressure
Calculating the density of dry air, water vapor or the mixture of air and water vapor - moist or humid air
Capacity of vacuum pump exhaust pipes
Gas carrying capacities for pipes in sizes 1/2" to 8"
Gas marks on gas cookers and heat developed
An online database with gas properties
Special care must be taken for gas mixtures when using the ideal gas law, calculating the mass, the individual gas constant or the density
Critical temperatures and pressures for some common gases - air, alcohol, ether, oxygen and more
Flame and explosion limits for propane, methane, butane, acetylene and other gases
Specific gravity of air, ammonia, butadiene, carbon dioxide, carbon monoxide and some other common gases
Densities and molecular weights of some common gases like acetylene, air, methane, nitrogen, oxygen and many others
Online horsepower calculator
In perfect or ideal gas the change in density is directly related to the change of temperature and pressure as expressed by the Ideal Gas Law
Enthalpy, Entropy and Internal Energy of Carbon Dioxide
Enthalpy, internal energy and entropy of Nitrogen
Enthalpy, Internal Energy and Entropy of Oxygen
Equation for calculating length of safety valve vent line
Liquefied Natural Gas (LNG)
Liquefied Petroleum Gas (LPG)
Sizing service gas pipes connecting apartments
Relieving capacity for relief valves on LPG vaporizers and tanks
Medical piping systems
Dimensions of Copper Tubes for Medical Gases
Convert between common liquid and gaseous methane units
Sizing low pressure natural gas pipe lines - imperial units
Sizing pipes with natural gas - for pressure above 5 psi (35 kPa)
Sizing low pressure natural gas pipe lines - metric values
Average use of natural gas in laboratory outlets
Natural gas consumption in some common equipment as boiling pans, ovens, cookers, kettles and more
Multiple dwellings and probable gas demand - diversivity
Natural gas is used extensively in residential, commercial and industrial applications
A natural gas glossary with common terms used in the natural gas industry
Different types of natural gas meters and their capacities
Calculate the capacity of natural gas pipe lines
Pascals laws relates to the pressure in a fluid
Pneumatic air cylinders - air pressure and force exerted
Calculate pneumatic cylinder velocity
An introduction to pressure - the definition and presentation of common units as psi and Pa and the relationship between them - online pressure units converter
Air pressure and content of water in saturated air
Convert from kPa to psi and inches of Water and Mercury
Vacuum pipes and pressure drop
Pressure drop in compressed air pipe lines
Energy content and specific gravity of propane - air mixtures
Latent heat of propane vaporization
The evaporation pressure of a Propane Butane mixture
Sizing low pressure propane gas pipe lines - imperial units
Sizing low pressure propane gas pipe lines - metric units
Sizing pipes with propane gas - for pressure above 5 psig (35 kPa)
Comparing pumps, compressors, blowers and fans
The most common terms rating air flow capacity are ICFM, FAD, ANR, SCFM or nl/min
Maximum safety valves free air relief capacity
Calculate relief valves in gas and vapor systems
Actual air compressor capacity (ACFM) versus standard air capacity (SCFM) and inlet air capacity (ICFM)
Air volume used by single-acting pistons
Specific Heat Ratio of air at temperatures from -40 to 1.000oC (-40 to 1.500oF) at standard atmospheric pressure - in Imperial and SI Units
Speed of sound in air at temperatures from -40 to 1.000oC (-40 to 1.500oF) at standard atmospheric pressure - in Imperial and SI Units
Introduction and definition of vapor and steam enthalpy. Specific enthalpy of saturated liquid, saturated vapor and superheated vapor
The Individual and Universal Gas Constant in fluid mechanics and thermodynamics
Reciprocating, rotary screw and rotary centrifugal air compressors
Burial dept and minimum cover of natural gas pipes
Vacuum is defined as air pressure below atmospheric pressure
Converting standard air volume flow to actual air volume flow
Calculating flow rate and evacuation time of vacuum pumps
Measuring volume flow in vacuum
A vacuum converting table between - % - mm Mercury - psi - torr - micron - kPa
An introduction to vapor and steam
Saturation pressure - exerted by escaping molecules
Vacuum pipes - air velocity diagram
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