When looking at the design of an AEL Domestic Hot Water (DHW) Plate Heat Exchanger for a Hotel , Hospital , Residential property etc the core principle of the design tends to always be the same (or very similar) with the Primary hot water circuit from a Boiler or another Primary heat source supplying water at 80 oC which in turn heats the Domestic Hot Water (DHW) circuit from 10 oC to 60 oC to supply each tap or shower outlet with hot water.
If the system design duties are not available from site in the early stages of an enquiry then assuming the Primary Temperatures are 80 >60 oC and the Secondary Temperatures are 10> 60 oC is a good starting point for Quotation purposes, these can be changed later if required.
AEL Domestic Hot Water (DHW) Plate Heat Exchangers can be supplied on a skid with a Techno System Control Panel c/w Valves and Primary Pump etc or as an Alfa Laval Plate and Gasket Plate Heat Exchanger or as an Alfa Laval Brazed Plate Heat Exchanger unit controlled elsewhere via a BMS System.
The AEL Techno System Domestic Hot Water (DHW) Packaged Plate Heat Exchangers also have an option for an Anti-Legionella Function and a High Limit Auto Shut off Valve.
In practice both types of heat exchanger transfers energy tend to follow the same principle of the Hot Primary Circuit heating the Cooler Secondary circuit to 60 oC.
Please feel free to contact the AEL Technical Sales Office for advice.