Heat Loss and Insulation of Piping Systems

Heat loss from pipe lines and tanks with and without insulation - charts and calculat

  Reynolds Number

An introduction and definition of the dimensionless Reynolds Number - with online calculators

  Single Phase Incompressible Flow

An online pressure drop calculator applied to Newtonian fluids which are incompressible and single phase in isothermal  and steady-state flow situations

  Vector Addition

Online vector calculator - add vectors with different magnitude and direction

  Statics and Dynamics

Statics, dynamics, and fluid dynamics applets.

  Water Pump

Calculators for converting units of volume, mass and length, temperature and pressure, flow and work, as well as easy solving of water pump-related complex equations, such as pressure head, dynamic head, field head, power loss, field efficiency, etc.

  Valve Sizing

CV calculators for gas, liquid and steam

  Water Hammer

  Valve Sizing

CV calculators for gas, liquid and steam

  Piping friction loss

Calculate for you the friction loss through a pipe using the popular Darcy-Weisbach equation :
 hf = f * ( L / D) * (V2 / 2 * g).

A general-purpose visual tool for solving thermodynamic problems and performing 'what-if' scenarios with the click of a button. The range of topics includes basic concepts, evaluation of thermodynamic states, first law of thermodynamics for closed and open systems, second law of thermodynamics, entropy and availability analysis, power and refrigeration cycles, generalized charts, gas mixtures, air conditioning, combustion, and gas dynamics.

  Heating piping

Calculates the necessary water flow (in m3/h) to transfer heating or cooling energy (in kcal/h and btu/h respectively) for a given temperature difference.  You may also calculate (if you enter the flow rate) the heat/cool transfer capacity of the given flow rate (for the given temperature difference of course).

Then , the program will calculate velocity , and by clicking the calculate button the energy loss in the pipe ,using the popular Darcy-Weisbach equation :
 h_f = f * ( L / D) * (V² / 2 * g)

  Psychrometric

You may calculate psychrometric data either by entering the wet bulb temperature, the relative humidity or the dew point temperature.

Calculate watts, amps, volts or ohms. Enter any two values and calculate the third

Discover Ohm's Law by changing voltage, current and resistance to get a working ciruit.

Enter two values (volts, amps, ohms or watts) and calculate the other two

Enter two values (capacitance, frequency or inductance) and calculate the third

Enter two values (resistance, frequency or capacitance) and calculate the third.

This Calculator will determine the minimum size conductor needed based on a 3% Voltage Drop. It does not take into consideration other factors such as minimum ampacity based on the National Electric Code Table 310-16

Enter AWG, temperature and number of wires and calculate copper area and diameter, resistance, and ampacity.

Enter resistor color codes and calculate resistance.

Enter capacitor color codes and calculate capacitance.

Calculates the characteristic impedance and per-unit-length parameters of typical printed circuit board trace geometries." Includes microstrip, embedded microstrip, stripline and asymmetric stripline calculators.

Calculate the trace width for printed circuit boards.

"Spreading Resistance Analysis (SRA) determines a resistivity-depth profile in silicon." Includes a silicon resistivity and carrier concentration calculator.

This site contains "...notes on switched mode power supply design, analysis, and simulation techniques as well as some web calculators specific to power engineering."

Find the RMS, DC and AC components of periodic power supply waveforms.

Pumps, Lifts, Elevators, Cranes, Fans and Compressors

Calculate how much downtime costs your business.

Use this worksheet to determine how much your company loses during system failures

Tell the calculator how many employees you need on each of the 7 days of the week, and it will work out an optimized solution for how many employees can have Saturday and Sunday off, how many can have Sunday and Monday off, and so on.

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  Stairs

  Calculate unit rise and run

  Beam Support Force

  Calculate beams loads and support forces

  Stress and Deflections in Beams

  Beams and shafts - deflection and stress calculator