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Belt drive

Why do crowned pulleys keep a flat belt on track?

tec-science - 11/28/2021 0

Thermodynamic processes in open systems

Flow process work as pressure-volume work of closed systems

tec-science - 08/05/2021 0

Thermodynamic processes in open systems

First law of thermodynamics for open systems (derivation)

tec-science - 08/01/2021 0

Thermodynamic processes in open systems

Shaft work in open systems

tec-science - 07/25/2021 0

Thermodynamic processes in open systems

Flow process work in open systems

tec-science - 07/25/2021 0

Thermodynamic processes in open systems

Flow work in open systems

tec-science - 07/21/2021 0

Thermodynamic processes in closed systems

Reversibility of thermodynamic processes (entropy)

tec-science - 07/20/2021 0

Thermodynamic processes in closed systems

What is the Joule-Thomson effect?

tec-science - 07/19/2021 0

Thermodynamic processes in closed systems

Free adiabatic expansion of an ideal gas in a vacuum

tec-science - 07/19/2021 0

Thermodynamic processes in closed systems

Dissipative thermodynamic processes in adiabatic systems

tec-science - 07/14/2021 0

Thermodynamic processes in closed systems

Polytropic process in a closed system

tec-science - 07/11/2021 0

Thermodynamic processes in closed systems

Derivation of the formulas for work and heat of a polytropic...

tec-science - 07/11/2021 0

Thermodynamic processes in closed systems

Derivation of the formulas of the isentropic “adiabatic” process

tec-science - 07/05/2021 0

Thermodynamic processes in closed systems

Isentropic (“adiabatic”) process in a closed system

tec-science - 07/05/2021 0

Thermodynamic processes in closed systems

Isothermal process in a closed system

tec-science - 06/25/2021 0

Thermodynamic processes in closed systems

Isobaric process in a closed system

tec-science - 06/25/2021 0

Thermodynamic processes in closed systems

Isochoric process in a closed system

tec-science - 06/25/2021 0

Thermodynamic processes in closed systems

Explanation of liquefaction using the Van der Waals equation

tec-science - 06/08/2021 0

Thermodynamic processes in closed systems

What is meant by dissipation of energy?

tec-science - 05/31/2021 0

Thermodynamic processes in closed systems

Concept of pressure-volume work (displacement work)

tec-science - 05/19/2021 0

Thermodynamic processes in closed systems

Dissipation of energy in closed systems

tec-science - 05/18/2021 0

Thermodynamic processes in closed systems

Derivation of the pressure-volume work (displacement work)

tec-science - 05/18/2021 0

Planetary gear

Transmission ratios of planetary gears (Willis equation)

tec-science - 03/10/2021 0

Planetary gear

Willis equation for planetary gears

tec-science - 03/10/2021 0

Belt drive

Advantages and Disadvantages of belt drives

tec-science - 03/07/2021 0

Belt drive

Belt tensioner systems for belt drives

tec-science - 03/07/2021 0

Gear types

Hypoid gears (screw bevel gears)

tec-science - 03/05/2021 0

Gear types

External and internal toothing of gears

tec-science - 03/05/2021 0

Gear types

Herringbone gears and double helical gears

tec-science - 03/05/2021 0

Gear types

Helical gears

tec-science - 03/05/2021 0

Gear types

Screw gears (crossed helical gears)

tec-science - 03/05/2021 0

Gear types

Spur gears (straight-cut gears)

tec-science - 03/05/2021 0

Gear types

Rack (toothed bar)

tec-science - 03/05/2021 0

Basics

What types of transmissions (gearboxes) are there?

tec-science - 03/04/2021 0

Basics

What is a transmission (gearbox) and what is it used for?

tec-science - 03/04/2021 0

Material testing

Rockwell hardness test

tec-science - 03/02/2021 0

Material testing

Vickers hardness test

tec-science - 03/02/2021 0

Material testing

Brinell hardness test

tec-science - 03/02/2021 0

Heat treatment of steels

Stress relief annealing of steel

tec-science - 02/28/2021 0

Heat treatment of steels

Solution annealing of steel

tec-science - 02/28/2021 0

Heat treatment of steels

Diffusion annealing of steel

tec-science - 02/28/2021 0

Heat treatment of steels

Recrystallization annealing of steel

tec-science - 02/28/2021 0

Heat treatment of steels

Coarse-grain annealing of steel

tec-science - 02/28/2021 0

Heat treatment of steels

Soft annealing of steel

tec-science - 02/28/2021 0

Heat treatment of steels

Nitriding of steel (surface hardening)

tec-science - 02/26/2021 0

Heat treatment of steels

Laser hardening of steel (surface hardening)

tec-science - 02/26/2021 0

Heat treatment of steels

Induction hardening of steel (surface hardening)

tec-science - 02/26/2021 0

Heat treatment of steels

Flame hardening of steel (surface hardening)

tec-science - 02/26/2021 0

Gases and liquids

Archimedes’ principle of buoyancy (crown of Archimedes)

tec-science - 02/16/2021 0

Heat

Cooling drinks with ice cubes (Derivation and calculation with formula)

tec-science - 02/15/2021 0

Gases and liquids

Why does water boil faster at high altitudes?

tec-science - 02/14/2021 0

Thermodynamic processes in closed systems

Why do pressure and temperature increase during the compression of a...

tec-science - 02/12/2021 0

Heat

Difference between latent heat of vaporization and enthalpy of vaporization

tec-science - 02/10/2021 0

Heat

Vineyard Frost Protection (sprinkling with water)

tec-science - 02/10/2021 0

Heat

Why steam burns are more dangerous than water burns?

tec-science - 02/09/2021 0

Heat

Why does water extinguish fire?

tec-science - 02/08/2021 0

Heat

Specific latent heat of solidification (enthalpy of solidification)

tec-science - 02/08/2021 0

Heat

Specific latent heat of fusion (enthalpy of fusion)

tec-science - 02/08/2021 0

Heat

Specific latent heat of condensation

tec-science - 02/06/2021 0

Heat

Specific latent heat of vaporization

tec-science - 02/06/2021 0

Thermodynamic processes in closed systems

Van der Waals equation (gas law for real gases)

tec-science - 01/31/2021 0

Heat

Why does the temperature remain constant during a change of state...

tec-science - 01/25/2021 0

Heat

Final temperature of mixtures (Richmann’s law)

tec-science - 01/20/2021 0

Heat

Heating and cooling of several objects

tec-science - 01/19/2021 0

Heat

Heat capacity of objects

tec-science - 01/17/2021 0

Heat

Calorimeter to determine the specific heat capacities of liquids

tec-science - 01/14/2021 0

Heat

Specific heat capacity of gases (at constant volume or pressure)

tec-science - 12/17/2020 0

Heat

Specific heat capacity of water

tec-science - 12/17/2020 0

Heat

Specific heat capacity of selected substances

tec-science - 12/14/2020 0

Heat

Important remarks on the specific heat capacity

tec-science - 12/12/2020 0

Heat

Specific heat capacity (derivation and definition)

tec-science - 12/11/2020 0

Thermodynamic processes in closed systems

Internal energy of ideal gases

tec-science - 11/24/2020 0

Thermodynamic processes in closed systems

Calculation of the internal energy for ideal gases

tec-science - 11/24/2020 0

Thermodynamic processes in closed systems

Law of Gay-Lussac for ideal gases (Charles’s law)

tec-science - 11/10/2020 0

Thermodynamic processes in closed systems

Law of Amontons for ideal gases

tec-science - 11/10/2020 0

Thermodynamic processes in closed systems

Law of Boyle-Mariotte for ideal gases

tec-science - 11/10/2020 0

Temperature

Why does ice form on the top of a lake?

tec-science - 11/07/2020 0

Heat

Gulf Stream & global ocean conveyor belt

tec-science - 11/01/2020 0

Heat

Difference between thermal conductivity, diffusivity, transmittance, resistance and heat transfer coefficient

tec-science - 10/31/2020 0

Heat

Why are radiators usually located under a window?

tec-science - 10/24/2020 0

Gases and liquids

Derivation of the Navier-Stokes equations

tec-science - 10/23/2020 0

Gases and liquids

Derivation of the Euler equation of motion (conservation of momentum)

tec-science - 10/08/2020 0

Gases and liquids

Derivation of the continuity equation (conservation of mass)

tec-science - 10/05/2020 0

Gases and liquids

Viscosity of an ideal gas

tec-science - 09/27/2020 0

Gases and liquids

How does a centrifugal pump work?

tec-science - 09/20/2020 0

Gases and liquids

Pressure head and head loss

tec-science - 07/17/2020 0

Gases and liquids

Moody chart (diagram)

tec-science - 07/04/2020 0

Gases and liquids

Pressure loss in pipe systems (Darcy friction factor)

tec-science - 07/01/2020 0

Gases and liquids

What ist the Magnus effect?

tec-science - 06/28/2020 0

Gases and liquids

Exercises with solutions based on the Bernoulli equation

tec-science - 06/20/2020 0

Gases and liquids

Venturi effect

tec-science - 06/14/2020 0

Gases and liquids

What is a Prandtl tube and how does it work?

tec-science - 06/14/2020 0

Gases and liquids

Examples and applications of the Venturi effect

tec-science - 06/14/2020 0

Gases and liquids

Drag coefficient (friction and pressure drag)

tec-science - 05/31/2020 0

Gases and liquids

Flow around spherical bodies (Stokes’ law of friction)

tec-science - 05/24/2020 0

Gases and liquids

Flow separation (boundary layer separation)

tec-science - 05/24/2020 0

Gases and liquids

Dimensionless numbers of the boundary layers (Prandtl, Schmidt and Lewis number)

tec-science - 05/15/2020 0

Gases and liquids

Thermal and concentration boundary layer

tec-science - 05/15/2020 0

Gases and liquids

Parasitic drag (skin friction drag & form/pressure drag)

tec-science - 05/13/2020 0

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