TABLE OF CONTENTS

Results
Observations of the field testing campaign:
Real on-site performances and comfort levels have been achieved, ensuring the
satisfaction of 10 families for almost 3 years now. In addition, 2 last generation
prototypes were installed one year later in order to validate our mass production
design: those have been running for almost 2 years.
SANDEN observed an SPF level reaching the initial target of 3, meaning that the DHW
heat pump clearly takes advantages of the properties of CO 2
, allowing to heat up water
over the year without any electrical back-up.
A key figure of this field testing campaign is the system performance under extreme
conditions (outside the theoretical temperature range) of outside air temperature of
-19°C: COP level was still at 1.6, which is twice as good as any electrical resistance boiler.
It illustrates why CO 2
allows a much better SPF compared to any other thermodynamic
boilers using HFC, which cannot operate without electrical back-up under negative
temperatures.
End users satisfaction:
Comfort is a key indicator for rating a DHW system: the advantage for a DHW heat
pump is that it can heat up extremely quickly. Starting from a fully cold water tank, 20
minutes are enough to take a shower and 2 hours to entirely heat up the stored water.
This feature allows a reduction in the volume of the tank to 150 litres at 65°C, which
means improving the SPF by decreasing the static losses.
As a consequence of its high heating capacity, Aquaeco 2
is able to provide sufficient
hot water to different family sizes (2 to 12 people).
Really green system:
Aquaeco 2
combines very low energy consumption through high performances with a
truly green refrigerant. Without considering the advantages of the performance, the
refrigerant choice by itself represents huge savings in terms of CO 2
emissions.
Installation and maintenance easiness:
Aquaeco 2
has been designed for an extremely easy indoor installation, in order to ensure
that its inherent performance level is not damaged by a non-optimized installation. In
addition, the flexible product layout (vertical or horizontal) allows to adapt to almost
any type of house.
Local production
Following a development jointly managed by both Japanese and French Engineering
teams, the manufacturing is exclusively handled by the already existing SANDEN
Manufacturing Europe plant in Tinténiac (Brittany, France).
Summary:
• Always available DHW
• Intelligently adapted to European needs
• Truly ecological system
– high performance: top of the class SPF for low energy bills
– natural, non flammable, non toxic refrigerant
– life-cycle analysis : setting new references
• COP = 3.2 according to EN16147 standard conditions
• Very quiet (40dBA)
• Reliable: based on a technology (CO 2
inverter) used for several years in Japan and
tested in the field in Europe
• Easy indoor installation (vertical or horizontal) and maintenance
• Made in France
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