Interactive lab
Change a variable. See what follows.
Simulations strengthen understanding; they don’t authorize work. Real practice still follows competency, procedures, and hazard controls.
Try and observe
Engineering practice and companion material
Fractions with cake
Cut, compare, and add up parts of one whole.
Open practice →Hobart water path
Tell apart the wash, rinse, and drain circulation in the Hobart case study. This material is separate from the Global Tek anatomy.
Open practice →Pump operating point
Find where the pump curve meets the system curve within a limited range. A teaching example, not approval of equipment sizing or NPSH clearance.
Open practice →Air and water: humid HVAC
Explore temperature, humidity, dew point, and condensation. An ideal psychrometric model for learning, not for real HVAC design or sizing.
Open practice →Global Tek D1M / TC-RB anatomy
24 component mappings and the evidence limits of the Global Tek reconstruction. The OEM 9 kW 380 V heater differs from the conceptual 2 kW 230 V substitute; the sensors, the wiring, and four versus five fuse holders are not yet confirmed.
Open practice →Voltage, resistance, current, and power
Current I = V/R
2.00 A
Power P = V·I
48.0 W
The dots’ speed only shows relative changes in current, not electron speed. An ideal resistor model doesn’t capture heating, tolerance, inductance, or source limits.