Eco Cute CO2 heatpump

[IceMan_4000]

HW HW HS HS HW HS HC CC PWR COPh COPt
OUT IN IN OUT
℃ ℃ ℃ ℃ L/min L/min kW kW kW - -
90 15.0 20.0 15.0 17.5 195.0 91.4 68.0 26.3 3.47 6.06

90 20.0 20.0 15.0 17.9 183.0 87.3 63.9 26.3 3.32 5.74

90 25.0 20.0 15.0 18.3 170.3 83.0 59.4 26.4 3.15 5.40

90 30.0 20.0 15.0 18.7 156.8 78.4 54.7 26.4 2.97 5.04

90 35.0 20.0 16.5 19.4 206.4 74.3 50.4 26.6 2.80 4.69

90 45.0 20.0 16.5 20.3 161.8 63.7 39.5 26.7 2.38 3.86

90 50.0 20.0 17.0 20.8 161.6 58.2 33.8 26.8 2.17 3.43

90 55.0 20.0 17.0 21.4 132.2 52.2 27.7 26.9 1.94 2.96

90 60.0 20.0 18.0 22.0 153.7 46.1 21.4 27.1 1.70 2.49

90 65.0 20.0 19.0 22.7 212.3 39.6 14.8 27.2 1.46 2.00


There seems to be a fair bit of hype and fight over this product in this forum. here is the run you asked for plus several others so you can draw your own conclusions

I am sorry I have been away from refrigeration engineer. I will answer what ever I think I can from what I have studied so far.

I posted way back in 2008 about Eco-cutes name being very Japanese. at the time I did not realize how true this was. I have since been applying EC technology in engineering applications in the HVAC and industrial food industry.

"Kyūtō-ki" is were the Cute comes from. "Kyuto" which stands for Hot water supply and "Ki" which is machine or equipment. Eco for economic or ecology Eco-Cute

Eco-cute = Hot Water Supply Equipment, and trust me direct Japanese to English translations do not happen to make sense that often. but this one is the nail in the head

Eco-cute or CO2 Trans-critical are not here to alter or take over the Heat pump market. Eco-cute is a great tool and/or weapon in an engineers arsenal, for HVAC design. Not a replacement.

alot of the times if Eco-cute is compared in heating applications.
Usually based on North American standard low delta - T 10-15 F 200-400 GPM to a market ready chemical/man heat pumps or boiler.

Eco-cute will have a similar COPh with high water temperatures and lower flow. Not a great heating appliance for N/A.
If one can use a modulating flow design, with a much larger delta T (45F is minimum required) Eco-cute can do a good job.
but the design must be taken into consideration early so that it reflects the run characteristics of trans-critical heat pump instead of a standard heat pump appliance.

Were Eco-cute performs is on projects were domestic hot water is involved.

just like the EC name implies! Hot water supply equipment!
High DHW demand suits Eco-cute's abilities well, then do supplementary space heating achieved through a plate exchanger.
Pricing is another issue which is old as time but applied right Eco-cute can make project dollars and sense.