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The portal of the technician, of the designer and the professional

free distribution of professional technical documents relating to the general design of systems air conditioning, heating, electrical, refrigeration, construction management, safety in the workplace and more

Free technical software


General data

Converter conversions - Units of measurement - Specific weights - Technical dictionary - Water mass and volume - Greek alphabet - English technical terms - General tables


Conditioning

Psychrometry - Psychrometric diagrams - Ducting - Ventilation - Aeraulics - Refrigeration units - Summer heat load - Humidification - Electric transformers heat supply - Equipment maintenance cards - Air conditioning tables - Table for psychrometer - Heat index - Air filters and standards - World temperatures - System calculation summer air conditioning - Air treatment unit batteries calculation - Equipment product heat calculation


Heating

Piping - Expansion vessel volume - Radiator heat requirement - Heating fuel cost calculation - Heating tables - Electric pumps - Inertial tank calculation - System water volume calculation


Electricity - Electronics

Calculation of power and motor currents - Resistance colors - Choice of electrical cables - IP protection rating - Motor protection switches and fuses - Ohm law calculator - Calculation of 4, 5 and 6 band electrical resistances - Calculator electrical consumption - Calculator electrical cable sizing - Power factor - Speed ​​of Poli electric motors


refrigeration

Refrigerant gases - Refrigerant gas rule - Refrigerant gas cards - Typical refrigerant gas applications - List of fluorinated gases


Metallurgy

Iron profiles - Steel pipes - Solid iron bars - Iron beams - Reinforced concrete irons - Various pipes - Beams payload - Processed with weight calculation


Cad blocks

Cad blocks for air conditioning - Cad blocks for electricity


Public Works

Accounting - Reports - Daily and weekly timetable - Works Supervisor forms - Work reminders - Suspension of work resumes


Construction site safety

Laws & standards - Construction site safety forms - Day man calculation - Daily and weekly time schedule - Safety and coordination plan - Safety charges - Simplified plans


TOOLS

Indications on the use of professional tools


Various utilities

Perpetual programmable calendar - Perpetual programmable editable calendar - Super lot - Agenda - Concentration test - Technical preparation test - Excel shortcut keys - Windows shortcut keys


Video tutorials published

Thermal requirement - radiators - Air conditioner calculation