Unit Converter

A convenient unit converter.


Online Interactive p-H and T-s Diagram

An online interactive refrigerant pressure-enthalpy(p-H) and temperature-entropy(T-s) diagram tool for HVAC-R engineers.


Orbiting Rotor Compressor

Compressors consume 30%~40% electricity globally. Any Improvement for compressor is meaningful to our environment. We dedicate to make a new kind of compressor that is efficient, low cost, quiet and flow adjustable. Our compressor is designed with an orbiting rotor which is engaged with its housing to form compression chamber without extra precision adjustment. Aimed to replace some piston, screw and scroll type compressors. Working Principle

Update - A new evolution of star scroll compressor with a new radial compliance design that can balance the fluid force from any radial direction. Want to make prototypes for your industry? Working Principle


Online Interactive Psychrometric Chart

How about our design tools? This time, a WORLD'S FIRST & FREE online psychrometric chart. A convenient, precise and powerful psychrometric chart & calculator tool for HVAC engineers.