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8 kw R744 CO2 Heat Pump Water heater residential usage -25 degree stable

Maanshan Ruika Metal Products Technology Co., Ltd.

8 kw R744 CO2 Heat Pump Water heater residential usage -25 degree stable

Brand Name : LN

Model Number : SJKRS-05I/C

Certification : CE ISO CCC ROHS

Place of Origin : China

MOQ : Negotiable

Price : Negotiable

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 80000pcs/yearCryogenic Operation/Long-Range Control /R22 R410A/Residential and Commercial Buildings Air Source Heat Pump

Delivery Time : 1-30 working days

Packaging Details : standard export package, or as per customer request

Heating Type : Multi-power Heat

Performance COP (C.O.P.) : 5.0

Max Pool Volume (m3 / Gal) : 600 / 158400

Water Side Heat Exchanger : Shell & Tube

Operating Voltage : 220-380-410V

Application : Villa Family, Sauna and Swimming Pool, Hotels

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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.


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

Power supply230V/1N/50Hz380V/3N/50Hz
Heating MethodDirect heating / circulating
Nominal working condition( kw)heating capacity7.4528.137.756.174.1108.6158.7
( kw)
Input power
( m³/h)
Heating water flow
High temperature working conditions(kw)heating capacity5.5823.928.551.559.589131.5
( kw)Input power1.737.58.916.118.627.841.1
( m³/h)
Heating water flow
Low temperature working conditions(kw)heating capacity4.315.719.131.838.959.390
( kw)Input power1.595.87.111.814.421.933.3
Heating water flow
Parts informationWater pipe interface sizeDN15DN20DN25DN32
Water heat exchangerPlate or tube heat exchanger
Air heat exchangerCopper tube aluminum fins
Compressor typeDouble rotarySemi-closed reciprocating type
Operation panelColor touch screen
Maximum outlet temperature85℃90℃
Design pressur(MPa)15MPa(HP)/8MPa(LP)
Dimensions (L,W,H mm)750*390*12451450*950*14501600*950*15001850*1150*19002050*1150*19502670*1410*21502070x2150x2245
( dB) Noise≤44≤56≤59≤62≤67≤70≤70
( kg) Weight8355066078086011801360
( Feed water pressure MPa)0.05~0.4
Water Outlet temperature (℃)55~8555~90
Maximum flow0.
Ambient temperature (℃)-25~43

System schematic diagram

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