Principle of Stainless steel high temperature 85 degree R410A hot water air source heat pump
The basic operating principle of the cascaded high temperature air source heat pump unit is based on the reverse
Carnot cycle principle. The working fluid system is divided into a low temperature level circulation system and
a high temperature level circulation system. The low-pressure gas is compressed into a medium-temperature and
medium-pressure gas by the low-temperature stage compressor, and enters the intermediate heat exchanger to
condense into a liquid state to release heat. The liquid working medium is decompressed and expanded by the
expansion valve and then returns to the fin In the heat exchanger, the evaporation heat is absorbed again to
complete a low temperature cycle; at the same time, the liquid working medium of the high temperature machine
absorbs the heat transmitted by the low temperature stage in the intermediate heat exchanger and evaporates
into a medium temperature and low pressure gas, and the low pressure gas is compressed by the low pressure
stage compressor. The medium-temperature and medium-pressure gas is compressed into a high-temperature and
high-pressure gas by a high-temperature compressor, which is condensed into a liquid state in a heat exchanger
to release heat to produce high-temperature hot water. In the intermediate heat exchanger, the evaporation heat
is absorbed again to complete a low temperature cycle; through the reciprocating cycle, the effect of producing
high temperature hot water at a low temperature ambient temperature is achieved.
Strength of Stainless steel high temperature 85 degree R410A hot water air source heat pump
High outlet water tem
No need for electric heating in winter, saving energy and electricity. When the outdoor ambient temperature is as low as -30°C, the
outlet water temperature of 85°C can still be maintained.
M o d u l a r d e s i g n , m e e t v a r i o u s n e e d s
With modular design, each system can realize the free combination of multiple units, which can easily meet various building needs. If one unit in the module combination fails,
the other units can operate normally, the backup operation performance is superior, and the use is more assured
S t r o n g a d a p t a b i l i t y t o e n v i r o n m e n t a n d h e a t l o a d
The unit can run stably at an ambient temperature of -35~50, and the temperature of hot water can reach 90, which is
suitable for various heating demand applications.
I n t e l l i g e n t n o n - s e n s i n g d e f r o s t c o n t i n u o u s h e a t i ng
Intelligent rapid non-sensing defrosting technology, greatly reducing the number of defrosting and defrosting time. The
defrosting interval is extended to 7 hours at the longest, and the heating continues without feeling hot and cold!
S u p e r l o w t e m p e r a t u r e h e a t i n g p e r f o r m a n c e
Working principle: The two-stage cascade coupling system is divided into a low temperature stage circulation system and a high
temperature stage circulation system, which reduces the compression ratio of the unit operation and improves the low temperature
operation efficiency of the unit.
I n d o o r a n d o u t d o o r l i n k a g e c o n t r o l , i n t e l l i g e n t o n e - h a n d c o n t r o l
The temperature controller of indoor fan coil unit and floor heating is
controlled by linkage with the outdoor main unit. When any terminal
controller is turned on, the main unit is automatically turned on. When
all terminal controls are turned off, the main unit is automatically
turned off, and the system application is more energy-saving.
M u l t i p l e p r o t e c t i o n s e n s u r e t h e s a f e o p e r a t i o n o f t h e s y s t e m
The host has 11 equipment self-checking protections, including compressor exhaust temperature protection, system high and low pressure protection,
double antifreeze and heat protection, fan motor overload protection, frequent start limit protection, and power-off memory recovery function to protect the
unit and use it safely.
Specification of Stainless steel high temperature 85 degree R410A hot water air source heat pump
| Spec |
KFXRS-25II/GW |
KFXRS-52II/GW |
KFXRS-102II/GW |
KFXRS-150II/GW |
| voltage |
380V 3N～50Hz |
380V 3N～50Hz |
380V 3N～50Hz |
380V 3N～50Hz |
| Nominal heating capacity(hot water) |
25kW |
52kW |
102kW |
150kW |
| Nominal heating capacity input power |
8kW |
16.5kW |
33kW |
48kW |
| Low temperature heating capacity (hot water) |
18kW |
36.5kW |
72kW |
110kW |
| Low temperature heating input power |
6kW |
12kW |
24kW |
36kW |
| Maximum input power |
13kW |
26kW |
52kW |
78kW |
| Maximum operating current |
35A |
70A |
140A |
210A |
| Nominal heating capacity ( heating) |
21kW |
42kW |
84kW |
125kW |
| Nominal heating input power |
7kW |
14kW |
28kW |
42kW |
| Low temperature heating (heating) |
18kW |
36kW |
79kW |
108kW |
| Low temperature heating input power |
6kW |
12kW |
24kW |
36kW |
| Rated water flow |
3.5m³/h |
7m³/h |
14m³/h |
21m³/h |
| Refrigerant name/injection amount |
R410A/R134a(5500g/4200g) |
R410A/R134a(5500g/4200g)*2 |
R410A/R134a(5500g/4200g)*4 |
R410A/R134a(5500g/4200g)*6 |
| water side resistance |
≤55kPa |
≤65kPa |
≤85kPa |
≤95kPa |
| noise |
≤62dB(A) |
≤68dB(A) |
≤72dB(A) |
≤76dB(A) |
Allowable working pressure on exhaust
/suction side |
4.5MPa/0.15MPa |
4.5MPa/0.15MPa |
4.5MPa/0.15MPa |
4.5MPa/0.15MPa |
| High pressure/low pressure side maximum allowable pressure |
4.5MPa |
4.5MPa |
4.5MPa |
4.5MPa |
| Maximum working pressure of heat exchanger |
4.5MPa |
4.5MPa |
4.5MPa |
4.5MPa |
| size (L*W*H)mm |
780*820*1780 |
1550*780*1780mm |
1570*1550*1850mm |
2360*1550*1850mm |
| Weight |
160kg |
318kg |
630kg |
950kg |
| Anti-shock level |
I |
| waterproof level |
IPX4 |
IPX4 |
IPX4 |
IPX4 |
| Connection |
DN32(outside) |
DN40(outside) |
DN54(flange) |
DN65(flange) |
| Unit Price usd/set |
3607 |
6725 |
13115 |
19680 |
Heating conditions: (hot water):
The ambient dry bulb is 20°C, the ambient wet bulb is 15°C, the initial water temperature is 15°C, and the final water temperature is 75°C.
Environmental dry bulb -7°C, ambient wet bulb -8°C, initial water temperature 6°C, and end water temperature 75°C.
Terminal universal heating unit
Heating condition: (heating)
The ambient dry bulb is 7°C, the ambient wet bulb is 6°C, and the effluent water temperature is 75°C.
Environmental dry bulb -7°C, ambient wet bulb -8°C, effluent water temperature 75°C. |
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