8 kw R744 CO2 Heat Pump Water heater residential usage -25 degree stable
Brand Name:LN
Certification:CE ISO CCC ROHS
Model Number:SJKRS-05I/C
Minimum Order Quantity:Negotiable
Delivery Time:1-30 working days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
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8 kw R744 CO2 Heat Pump Water heater residential usage -25 degree stable
Description of DORIN INVERTER CO2(R744) Heat Pump Systems Carbon dioxide high temperature heat pump air source and water source
It is always very cold in Europe and America, CO2 heat pumps work
very stable under -25℃,please reference COP performance and
technical datas last email. Stable Outlet of 90℃, which is R410 cannot achive
Dorin Compressor, Wilo pump, special heat exchanger, all spares are
high quality
CO2 heat pump is very friendly to environment, contributes to global policy of "carbon neutral
carbon peak"
CO2 is Non-fammable, non-toxic, Natural Product, ODP(Ozone Threat
Potential Value)=0, GWP(Greenhouse Effect Potential Value)=1 While
the R410 is 2088
high temperature heat pumps are capable of being used with existing
high temperature distribution systems (e.g. existing radiators),
and therefore could provide a viable alternative to boilers in the
retrofit market.
CO2 is widely recognised an attractive and competitive alternative
refrigerant to the synthetic fluids in heat pump applications
Carbon dioxide high temperature heat pump
Carbon dioxide is a natural working fluid, with high thermal
conductivity and specific heat capacity, which helps to obtain high
heat transfer coefficient; low dynamic viscosity can reduce the
pressure drop of working fluid in the tube. The high vapor density
helps to improve the mass flow rate of the working fluid, the
density ratio (the density ratio represents the difference between
the properties of the gas and the liquid) is small, which is
beneficial to the distribution of the working fluid, and the
surface tension is small, which can improve the boiling in the
evaporator heat transfer intensity of the zone. The gas density is
high, and the heating capacity per unit volume is large, which is
about 5 times that of R22, which can reduce the size of pipes and
compressors, making the system lighter, compact and small in size.
The pressure ratio of the compressor (the ratio of the condensing
pressure and the evaporating pressure of the working fluid) is low,
the compression process can be closer to isentropic compression and
the efficiency is improved. Wide range of sources and low prices.
The process of carbon dioxide transcritical refrigeration cycle is
slightly different from that of ordinary vapor compression
refrigeration cycle. The suction pressure of the compressor is
lower than the critical pressure, and the evaporation temperature
is also lower than the critical temperature. The endothermic
process of the cycle is still carried out under subcritical
conditions. The heat exchange process relies on latent heat to
complete. However, the exhaust pressure of the compressor is above
the critical pressure, and no condensate is produced during the
heat release process of the working medium. The high-pressure heat
exchanger is no longer called a condenser, but a gas cooler. The
traditional concept of condensation temperature has been lost.
Meaning, the heat exchange process relies on sensible heat to
complete.
Performance of 8 kw R744 CO2 Heat Pump Water heater residential usage -25 degree stable
Ultra-low temperature working conditions: ambient temperature
DB-10-C, water inlet temperature 9°C;
Defrost condition: ambient temperature DB2°C/WB1°C, water inlet
temperature 9°C; low temperature condition: ambient temperature
DB7°C/WB6°C, water inlet temperature 9°C; standard working
condition: ambient temperature DB20°C /WB15°C, inlet water
temperature 15°C; high temperature working condition: ambient
temperature DB38°C/WB23°C, inlet water temperature 29°C.
Installation Notes:
1. The spacing around the installation must not be less than Im;
2. The pipelines other than the heat pump should be protected from
frost and heating elements can be installed;
3. Heat insulation and protection measures should be taken for the
pipelines for hot water circulation to prevent heat loss.
| HP | A/mm | B/mm | C/mm |
| 7.5 | 1450 | 950 | 1450 |
| 10 | 1600 | 950 | 1500 |
| 15 | 1850 | 1150 | 1900 |
| 20 | 2050 | 1150 | 1950 |
| 30 | 2670 | 1410 | 2150 |
| 40 | 2290 | 2270 | 1980 |
Application Diagram Pressure-bearing water tank
8 kw R744 CO2 Heat Pump Water heater residential usage -25 degree stable
System Diagram Smart Control System
8 kw R744 CO2 Heat Pump Water heater residential usage -25 degree stable
CO2 heat pump hot water unit specification list 8 kw R744 CO2 Heat Pump Water heater residential usage -25 degree stable | ||||||||
| Model | SJKRS-05I/C | SJKRS-28II/C | SJKRS-36II/C | SJKRS-55II/C | SJKRS-73II/C | SJKRS-106II/C | SJKRS-160II/C | |
| Specification | 2HP | 7.5HP | 10HP | 15HP | 20HP | 30HP | 45HP | |
| Power supply | 230V/1N/50Hz | 380V/3N/50Hz | ||||||
| Heating Method | Direct heating / circulating | |||||||
| Nominal working condition | ( kw)heating capacity | 7.45 | 28.1 | 37.7 | 56.1 | 74.1 | 108.6 | 158.7 |
| ( kw) Input power | 1.61 | 6.1 | 8.2 | 12.2 | 16.1 | 23.6 | 34.5 | |
| COP | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | |
| ( m³/h) Heating water flow | 0.11 | 0.6 | 0.81 | 1.21 | 1.62 | 2.33 | 3.41 | |
| High temperature working conditions | (kw)heating capacity | 5.58 | 23.9 | 28.5 | 51.5 | 59.5 | 89 | 131.5 |
| ( kw)Input power | 1.73 | 7.5 | 8.9 | 16.1 | 18.6 | 27.8 | 41.1 | |
| COP | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | |
| ( m³/h) Heating water flow | 0.07 | 0.27 | 0.33 | 0.59 | 0.68 | 1.02 | 1.51 | |
| Low temperature working conditions | (kw)heating capacity | 4.3 | 15.7 | 19.1 | 31.8 | 38.9 | 59.3 | 90 |
| ( kw)Input power | 1.59 | 5.8 | 7.1 | 11.8 | 14.4 | 21.9 | 33.3 | |
| COP | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | |
| (m³/h) Heating water flow | 0.07 | 0.28 | 0.34 | 0.56 | 0.68 | 1.04 | 1.52 | |
| Parts information | Water pipe interface size | DN15 | DN20 | DN25 | DN32 | |||
| Water heat exchanger | Plate or tube heat exchanger | |||||||
| Air heat exchanger | Copper tube aluminum fins | |||||||
| Compressor type | Double rotary | Semi-closed reciprocating type | ||||||
| Operation panel | Color touch screen | |||||||
| Maximum outlet temperature | 85℃ | 90℃ | ||||||
| Refrigerant | R744(CO2) | |||||||
| Design pressur(MPa) | 15MPa(HP)/8MPa(LP) | |||||||
| Dimensions (L,W,H mm) | 750*390*1245 | 1450*950*1450 | 1600*950*1500 | 1850*1150*1900 | 2050*1150*1950 | 2670*1410*2150 | 2070x2150x2245 | |
| ( dB) Noise | ≤44 | ≤56 | ≤59 | ≤62 | ≤67 | ≤70 | ≤70 | |
| ( kg) Weight | 83 | 550 | 660 | 780 | 860 | 1180 | 1360 | |
| Feedwatertemperature(℃) | 5~40 | |||||||
| ( Feed water pressure MPa) | 0.05~0.4 | |||||||
| Water Outlet temperature (℃) | 55~85 | 55~90 | ||||||
| Maximum flow | 0.24 | 1.2 | 1.5 | 2.4 | 3.2 | 4.9 | 6.5 | |
| Ambient temperature (℃) | -25~43 | |||||||
System schematic diagram
8 kw R744 CO2 Heat Pump Water heater residential usage -25 degree stable
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