Strength of Air- or water-source heat pumps that use CO2 as a
refrigerant
The carbon dioxide heat pump controller, the carbon dioxide heat
pump includes a compressor, a fan, a water pump, an electronic
expansion valve, a three-way valve, an evaporator and a heat
exchanger, and the controller includes a temperature sensor, which
is arranged on the carbon dioxide heat pump and is used to detect
each key point temperature; high pressure pressure control, which
is set at the compressor outlet, detects whether the pressure of
the carbon dioxide heat pump exceeds the set upper limit and sends
a signal to the MCU; low pressure pressure control, which is set at
the compressor inlet, detects whether the carbon dioxide heat pump
pressure is lower than the set lower limit And send a signal to the
MCU; the relay drive module is used to control the compressor, the
fan and the three-way valve; the water pump drive module is used to
adjust the speed of the water pump; the electronic expansion valve
drive module is used to drive the electronic expansion valve. The
controller effectively solves complex problems such as high cost of
the control system, intelligent fault diagnosis and energy-saving
and efficient operation, and makes the controller system more
optimized through real-time analysis and processing of data.
A carbon dioxide heat pump sludge drying system, the carbon dioxide
heat pump sludge drying system includes: a sludge drying unit, the
sludge drying unit is used for drying the sludge to obtain dried
sludge and moist hot air; and a carbon dioxide heat pump A unit,
the carbon dioxide heat pump unit is used for forming the humid and
hot air flowing into the carbon dioxide heat pump unit from the
sludge drying unit into dry high temperature air, and then
returning the dry high temperature air to the sludge drying unit ,
the dry high temperature air is used as a heat source for drying
the sludge. The utility model adopts a supercritical CO2 heat pump
unit, the exhaust temperature of the compressor is high, the latent
heat of CO2 is high and non-condensing, so the temperature of the
hot air outlet can reach above 100 ° C, and the drying efficiency
is greatly enhanced
The carbon dioxide heat pump series multi-tank direct heat heating
system includes: a carbon dioxide heat pump unit and a water tank,
and is characterized in that: the water tanks are several and are
connected in series with each other, and a cut-off valve is
arranged between two adjacent water tanks; The water outlet of the
heat pump unit is connected with the first water tank, and the
return water port of the carbon dioxide heat pump unit is connected
with the terminal water tank; the water outlet of the first water
tank is connected with the water inlet of the heating equipment,
and the terminal water tank is connected with the water inlet of
the heating equipment; A tap water supply branch is also provided
on the water supply branch between the carbon dioxide heat pump
unit and the first water tank. The utility model has simple
structure, convenient installation and adjustment, improves the
stability of the unit, reduces maintenance and material costs, and
improves the heat exchange efficiency of the transcritical carbon
dioxide heat pump heat exchanger.
Commercial Air- or water-source heat pumps that use CO2 as a
refrigerant
| Unit type | SJKRS-28 II/C | SJKRS-36II/C | SJKRS-55 II/C | SJKRS-73 I/C | SJKRS-106 IC | SJKRS-I60II /C |
| Specifications | 7.5HP | 10HP | 15HP | 20HP | 30HP | 40HP |
| Power supply | Three-phase five-wire380V/50Hz |
| Heating mode | Direct heat/cycle type |
| Standard working condition | Heating capacity( kw ) | 27.5 | 36.7 | 55.1 | 72.8 | 10.6.5 | 155.1 |
| Input Power(kW) | 6.1 | 8.2 | 13.7 | 16.1 | 23.6 | 34.5 |
| COP | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
| Hot Water flow(m³/h) | 0.59 | 0.79 | 1.18 | 1.56 | 2.29 | 3.33 |
| High temperature condition | Heating capacity kw ) | 23.9 | 28.5 | 51.5 | 59.5 | 89 | 13.1.5 |
| Input Power(kW) | 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 |
| Hot Water flow(m³/h) | 0.27 | 0.33 | 0.59 | 0.68 | 1.02 | 1.51 |
| Low temperature condition | Heating capacity( kw ) | 17.3 | 21.4 | 34.8 | 41.5 | 62.2 | 94.5 |
| Input Power(kW) | 6.2 | 7.6 | 12.4 | 14.8 | 22.2 | 33.8 |
| COP | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 |
| Hot Water flow(m³/h) | 0.32 | 0.4 | 0.65 | 0.78 | 1.16 | 1.77 |
| Component Information | Size of water pipe joint | DN20 | DN25 | DN32 | DN40 |
| Water heat exchanger | Plate or sleeve heat exchanger |
| Air Heat Exchanger | Aluminum Fin for copper tube |
| compressor type | Semi-closed reciprocating |
| Operation Panel | Color touch screen |
| Maximum outlet temperature(℃) | 90℃ |
| Refrigerants | R744 (CO2 ) |
| Design pressure(MPa) | High side 15, low side 8 |
| Dimensions (length, width and height mm) | 1450x950x1450 | 1600x950x1500 | 1850x1150x1900 | 2050x1150x1950 | 2670x1410x2150 | 2290x2270x1980 |
| Noise (dB) | 56 | 59 | 62 | 67 | 70 | 70 |
| Weight(kg) | 550 | 660 | 780 | 860 | 1180 | 221360 |
| SCOPE of use | Feed water temperature(℃) | 5~ 40 |
| Feed water pressure | 0.05~ 0.4 |
| Effluent temperature(℃) | 55~ 90 |
| Maximum flow | 1.2 | 1.5 | 2.4 | 3.2 | 4.9 | 6.5 |
| Ambient temperature(℃) | ’-20~43 |
