Why are OEMs suddenly interested in economical, eco-friendly tubes for ACR coils?
In the past, energy and electricity were considered cheap and abundant. Efficiency was not an important criterion in the design of air conditioners. Energy efficiency can be achieved at a lower material cost with smaller diameter tubes. Overall system size can be reduced by using small diameter tubes. Smaller tube diameters result in reduced usage of tube materials, fin materials and refrigerants, contributing to overall reduction in system cost. Also, smaller diameter tubes can operate at higher pressures.
