Four state points trace the cycle on the P–h plane: refrigerating effect = h₁ − h₄, work = h₂ − h₁, COP = (h₁ − h₄)/(h₂ − h₁)
Run this interactive Refrigeration & HVAC demo live below, or download it as a single self-contained HTML file that works offline in any browser or LMS — one of 1,900+ free interactive teaching demos on Notedeck. With Notedeck you upload your own materials and turn them into interactive courseware, question papers with answer keys, and AI-taught lessons.