About Tadema HVAC Software

Psychrometric Chart is together with HVAC_Simply and Mollier Diagram part of Tadema HVAC Software. Piet Tadema develops simulation software that facilitate HVAC professionals around the world with their day-to-day work.

Background of Piet Tadema

Piet studied electrical engineering In Zwolle in the Netherlands. I worked several years as measurement and control technician and service tecnician. During my career I specialized in control engineering, air treatment and cooling technologies. Often I have experienced a lack of good applications that would support me in my daily work. In these cases I usually used my laptop for calculations in Excel. However, I missed a handy program for quick air-treatment calculations at the workfloor. Most applications are expensive and very hard to use. So I applied my knowledge about air treatment with my 30 year experience in programming. The result was first Mollier Diagram Pro and later the revised version including Psychrometric Chart.

Installation trade fair Hardenberg





Practical applications of HVAC simulation software

  • Simulation software for air treatment
    Developed a simulation model for humidifying high volume halls through steam humidifiers
  • Visualisation and simulation software - Kantherm
    Heat recovery systems for air conditioning (heath wheels)
  • Simulation Model - Dutch Rainmaker
    Stand-alone wind turbines that produce fresh water from air.
  • Simulation Model - Hospital Amsterdam
    Heatpump application (adjustable power Heat Pump).
  • Simulation Model - Hellebrekers Market leader in the Netherlands in Swimmingshalls
    Comparison existing AHU with new or refurbished AHU