When comparing heat recovery products, efficiency numbers can be confusing. Manufacturers may quote temperature effectiveness, sensible recovery efficiency, or total energy recovery. Understanding these metrics helps you make fair comparisons and avoid under- or over-sizing equipment. Temperature Effectiveness (Sensible) Sensible effectiveness is the most common metric for air-to-air heat exchangers. It compares the actual temperature […]
Heat Recovery Effectiveness Test Standards
“Effectiveness” is the number every code and rating system quotes, but the value only means something if the test method is stated. This article maps the main heat recovery effectiveness test standards and how they define the metric. Definitions Sensible effectiveness ηs = (Tsupply − Toutdoor) / (Textract − Toutdoor). Enthalpy (total) effectiveness ηt = […]