The QB-1 range,a tubular heat exchanger suitable for first-floor showers, comes in three versions. The QB1-21 (standard), QB1-21C & QB1-21D
C is for the Cyclone inlet option, which adds 1.2% efficiency at a 11 litres/min flow rate.
D is for the Double QB1 model for higher flow rate installations.
The heat exchanger consists of three tubes. The inner pipe, with a diameter of 50 mm, is the waste water drain pipe. The cold water mains that is to be preheated flows upwards through the annular space between both pipes. The heat exchanger has a double wall separation between sewage and drinking water.
By applying the QB-1 the cold water going to the water heater and the shower's mixer tap will be preheated. The water heater needs to work less then half of it's capacity during a shower. For dwellings savings over 200m³ gas a year can be achieved.
The QB-1 can be used in dwellings that have the shower on the first floor. Besides dwellings the QB-1t can also be used in hotels, apartments, nursing homes, swimming pools, hospitals, industrial applications, etc.
The Showersave QB-1 is recognised by BRE in SAP under Appendix Q as well as in the Product Characteristics database of SAP 2012. It is around 60% efficient (depending on flowrate) and therefore significantly improves the Dwelling Emission Rate (DER) ensuring carbon targets are achieved at the lowest possible cost and without the need to install renewables.
The inner pipe is twin walled copper with an air gap. This ensures compliance with EN1717, where an air break to drain is required. In other words - you do not need to keep the drain OPEN as some competing systems do. This ensures NO opportunity for nasty smells to eminate from the system. It also insulates the system against noise.
The system has no pumps, controllers or electrical connections. This ensures that it is simple to install and requires no maintenance over its life which which is expected to be in excess of 20 years.