Product Details
Technical background
With the maturity of low ambient temperature air source heat pump technology, the heating reliability and heating efficiency of air source heat pump have been greatly improved. The low-temperature air-source heat pump adopts the quasi-two-stage compression technology of intermediate air supplement, which improves the heating capacity and heating efficiency of the heat pump at low temperature, and also expands the application area of the air-source heat pump. At present, as long as the ambient temperature is not lower-20℃, heating water temperature does not exceed55The low-ring temperature air source heat pump with quasi-two-stage compression of jet increase is an economical and reliable heating source.
But China is vast, with extreme temperatures of minus 40 degrees in Inner Mongolia, northern Xinjiang and parts of the northeast. Or, we need to provide more than in the cold winter55At this time, the quasi-two-stage low-temperature air source heat pump cannot meet the requirements. At this time, we need to use the cascade heat pump technology. Cascade heat pump is the use of two-stage compression, relay heating way to obtain heat. be able-40℃ ambient temperature120Hot water or steam below °C as a heat source can directly replace hot water or low-pressure steam boilers in most applications.
Advantages of the "third generation" cascade heat pump
System is stable and reliable:
The air source side adopts an inverter compressor, which can automatically adjust the speed of the primary compressor according to the change of the ambient temperature, so as to ensure the stability of the heat and temperature on the heating side.
Economy of year round application:
Using unique technology, it can automatically select a single stage according to changes in the environment and heating temperature(quasi-two-stage compression)Or cascade working mode, so as to ensure that the system is always efficient and reliable operation when heating throughout the year.
Hot and cold:
Using unique technology, two water systems are set up, which can cool in summer and heat all year round. It solves the problem that the first generation of cascade machine can only supply heat, and realizes the dual use of one machine.
Remote Control of Internet Cloud Platform:
Karma Nai Company has built its own Internet of Things cloud platform, and all units can access it through authorization."armored cloud platform"Achieve remote control. The heat pump unit comes with a networked communication module, throughRS485Remote communication technology, communication with the cloud platform, so as to achieve the remote control of the unit.
●-40°C environment can produce 120°C hot water or steam, directly replace the boiler
● Automatically select single-stage or cascade operation mode according to the use conditions to facilitate energy saving
● Can run the refrigeration mode, a dual-use
● Variable frequency drive to ensure stable supply of heat and temperature on the use side
● Adopt environmentally friendly refrigerant
● Remote control of Internet cloud platformthird generation cascade
Technical parameter table of the third generation cascade heat pump
| Specification Model Mode | CDS-18 | CDS-22 | CDS-28 | CDS-35 | CDS-45 | CDS-55 | CDS-70 | CDS-90 | CDS-110 | CDS-220 | ||||
| Unit performance | Refrigeration Working condition |
Rated refrigerating capacity | kW | 13.5 | 16 | 19.5 | 27.6 | 32 | 43.6 | 55 | 64 | 87 | 174 | |
| Rated input power | kW | 4.8 | 5.7 | 6.8 | 9.7 | 11.5 | 15.5 | 19.6 | 22.9 | 31 | 61 | |||
| single stage Heating |
Rated heating capacity | kW | 16.5 | 20 | 23.9 | 33 | 39.6 | 49.5 | 66.0 | 79.2 | 99 | 198 | ||
| Rated input power | kW | 5.5 | 6.5 | 7.9 | 11 | 13.1 | 16.5 | 22 | 26.4 | 33 | 66 | |||
| low temperature Cascade Heating |
Rated heating capacity | kW | 18 | 21 | 26 | 36 | 43 | 54 | 72 | 86 | 108 | 216 | ||
| Rated input power | kW | 9 | 10.6 | 13 | 18.2 | 21.5 | 27.3 | 36.4 | 43 | 55 | 110 | |||
| Normal temperature Cascade Heating |
Rated heating capacity | kW | 20 | 23 | 29 | 40 | 48 | 60 | 96 | 120 | 240 | |||
| Rated input power | kW | 8.1 | 9.6 | 11.7 | 16.3 | 19.5 | 24.5 | 32.5 | 39 | 49 | 98 | |||
| Maximum operating current | A | 20 | 23 | 29 | 40 | 45 | 55 | 80 | 90 | 110 | 220 | |||
| Power | 380V/3N/50HZ | |||||||||||||
| Comprehensive index of unit noise | dB(A) | 55 | 58 | 59 | 60 | 62 | 63 | 65 | 66 | 66 | 69 | |||
| Overall dimension | Long (A) | mm | 1404 | 1404 | 1404 | 1754 | 2004 | 2004 | 2300 | 2300 | 2300 | 2400 | ||
| Width (B) | mm | 484 | 484 | 484 | 1024 | 1024 | 1024 | 1260 | 1260 | 1260 | 1580 | |||
| High (C) | mm | 1624 | 1624 | 1624 | 1886 | 1886 | 1886 | 2140 | 2220 | 2310 | 2350 | |||
| Unit quality | kg | 280 | 320 | 380 | 680 | 850 | 920 | 1320 | 1680 | 1750 | 2890 | |||
| Control operation | Water temperature control accuracy | ± 2 ℃ | ||||||||||||
| Ambient temperature range | ℃ | -45 ℃-43 ℃ | ||||||||||||
| refrigeration cycle structure | Throttling mode | ℃ | Electronic expansion valve | |||||||||||
| Refrigeration Agent |
Type | R410A R2 mixed refrigerant | ||||||||||||
| Maximum working pressure | MPa | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 42 | |||
| Compression Machine |
Type | DC Inverter Scroll Compressor | ||||||||||||
| Quantity | A/Taiwan | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 4 | 4 | 8 | |||
| Air Source measurement heat transfer device |
Type | finned heat exchanger | ||||||||||||
| Quantity | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | ||||
| Motor power | kW | 0.25*2 | 0.25*2 | 0.4*2 | 0.4*2 | 0.4*2 | 0.75*2 | 0.75*2 | 0.75*2 | 0.75*4 | ||||
| Water side heat transfer device |
Type | plate heat exchanger | ||||||||||||
| Water flow | m³/h | 3.5 | 4.2 | 48 | 6.88 | 8.25 | 10.32 | 13.76 | 16.51 | 20.64 | 41 | |||
| Nozzle size | DN | 25 inner teeth | 25 inner teeth | 25 inner teeth | 40 External teeth | 40 External teeth | 40 External teeth | 40 Flange | 40 Flange | 40 Flange | 100 flange | |||
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"Third generation" cascade heat pump
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