Aquanex Potable Heat Pump Water Heaters.
Single-Pass units are designed for commercial potable hot water delivering 62°C water to stratified storage tanks. Single-Pass units contribute significantly to real-time hot water demand, and therefore can be used to reduce required storage capacity which increases the cost effectiveness of the heat pump system.
Aquanex MWS
Capacity Range (heating):
- MWS 250 27kW (single-fan chassis)
- MWS 500 54kW (twin-fan chassis)
- MWS 1000 98kW (quad-fan chassis)
Refrigerant: R32
Aquanex Single-Pass Design:
- Reduction in required pump power - Internal BLDC pump
- Liquid injection – for better performance in low ambient conditions
- Greatly reduced piping costs
- Reduced water storage required
- Usable hot water in real time
- Low service / maintenance requirements
- Reliable long life system
- Most efficient system design
- Compact Design
Applications:
Potable water heating applications (eg residential, commercial kitchens, hostels, laundry, fitness centres, elderly care facilities)
Aquanex Single-Pass System Design
A Single-Pass system, featuring ThermoShell heat exchanger, supplies hot water directly to the tank and it is ready for use straight away, allowing a reduction in storage capacity to meet peak demand load.
E.g. A 35kW Single-Pass system produces 600 L/hr of 62˚C water. A 1200 litre capacity tank with a 35kW Single Pass system allows the tank capacity to be extended to a maximum of 2400 litres over a 2 hour peak period with a recovery rate of 600 L/hr. This allows for savings in water heating costs in off peak times and also enables the utilisation of a smaller tank to service peak periods.
Conventional Inefficient Multi-Pass System
The Multi-Pass system, featuring plate heat exchanger, slowly increases the water temperature of the tank on each pass, this system means you can only use the hot water currently in the tank.
E.g. A Multi-Pass system storage tank must contain sufficient volume to meet the entire peak usage period (in this example 2400 litres). Whilst the system will begin to reheat the water this hot water is not available until the entire tank reaches a usable temperature.
Single-Pass Efficiency
This graph demonstrates the significant differences in Single-Pass efficiency over it’s Multi-pass alternative. A Multi-pass system may start out with a higher COP rating but as the tank gets closer to temperature the COP level drops significantly as it needs more and more energy to bring the last of the water to 62°C. In comparison the Single-pass system is much more stable, able to hold at high levels of efficiency and overall deliver significant savings
ThermoShell® Technology Heat Exchanger
Heat pump water heaters have at their core a refrigerant to water heat exchanger and its performance is critical to the overall performance of the system. Temperzone’s ThermoShell® heat exchanger is designed to operate extremely efficiently under low water flow rates. This enables Aquanex Single-Pass systems, which require lower water flow rates, to provide superior performance.
Alternative heat exchanger designs are highly prone to fouling over time which reduces performance and greatly shortens the life of the system. Temperzone’s ThermoShell® eliminates this fouling risk and guarantees the same performance year after year.
Reduced Installation Costs
Single-Pass allows significantly reduced storage capacity requirements. MWS units produce up to 1000 L/hr of 62°C hot water continuously once operating.
Single-Pass results in greatly reduced piping costs. Flow rates between the tank and water heater are 10-15% of the equivalent multi-pass alternative. Piping is typically sized in 20 mm or 25 mm piping rather than up to 50 mm. Unlike multi-pass systems this also allows for retrofitting to existing hot water tanks and systems.
Designed to Operate Reliably, Longer
Aquanex MWS units are high quality and durable with a focus on long life, low service requirements. The advanced unit controller uniquely enables the compressor to constantly operate within its design limits improving unit life.
- Durable galvanised steel cabinet
- Marine grade pretreatment and polyester powder coated galvanized steel, inside and out
- Draining base preventing water and ice accumulation inside the unit
- Leak-free access door construction
- Easy service and maintenance access using panels and doors
- Advanced rifle bore copper tubes
- Highly durable closed cell foam insulation
- Non-fouling ThermoShell® heat-exchanger