Overview of Commercialized R290 Technology Shanghai Hitachi Electrical Appliances CO.,LTD Feb 29 2016 Highly Group ZHOU Yi
Content
1. Overview of R290 refrigerant 2. R290 applied in room air conditioners 3. R290 applied in heat pump water heater 4. R290 applied in refrigeration equipment 5. R290 applied in other applications 6. R290 compressors developed in SHEC
1. Overview of R290 refrigerant （1）R290 is natural refrigerant 3rd Stage 1990‐ 2040
2nd Stage 1930‐ 1990
1st
Stage 1830‐ 1930
Global Warming Potential Ozone Depression Potential
Safety and toxicity Working feasibility SO2、HCS、CO2、 NH3
Refrigerant Environment impact factors
4th Stage 2000‐
z CFC、HCFC R11、R12、R22
z HFC(ODP=0） R410A、R407C R134a
z ODP=0, Lower GWP HFC、 HFO、
Natural Refrigerant
R22
R134a
R404A
R290
ODP
0.055
0
0
0
GWP
1500
1430
3850
3
1. Overview of R290 refrigerant （2）Basic thermodynamic property of R290
Refrigerant
R22
R134a
R404A
R290
Molecular weight
86.47
102.03
97.6
44.1
Normal boiling point(℃)
‐40.81
‐26.07
‐46.10
‐42.09
Critical pressure (MPa)
4.99
4.0593
3.735
4.248
Critical temperature (℃)
96.15
101.06
72.14
96.7
Basic thermodynamic property
R290 has lower normal boiling point as R22 and R404A, and has higher critical temperature as R22 and R134a.
1. Overview of R290 refrigerant （3）Basic cycle characteristic of R290 Refrigerants
R22
R134a
R404A
R290
Evaporating temperature ℃
7.2
7.2
7.2
7.2
Suction temperature ℃
35.0
35.0
35.0
35.0
Condensing temperature ℃
54.4
54.4
54.4
54.4
Temperature before expansion valve ℃
46.1
46.1
46.1
46.1
Suction pressure MPa
0.625
0.377
0.755
0.588
Discharge pressure MPa
2.146
1.470
2.538
1.883
Theoretical discharge temperature ℃
101.8
84.9
84.1
84.2
Volumetric refrigeration capacity kJ/m3
3944.8
2630.2
4147.3
3434.9
Theoretical COP
4.805
4.993
4.539
4.908
R290 has higher theoretical COP as R134a and lower discharge temperature as R134a and R404A.
1. Overview of R290 refrigerant （4）R290 has better transport properties
From：Hydrocarbons as refrigerants in small heat pump and refrigeration systems – A review International journal of refrigeration 31 (2008) 552–563
1. Overview of R290 refrigerant
Degradation of cooling capacity
（5）Degradation of cooling capacity of R290 1.0 0.8
R22 R134a
0.6
R404A 0.4
R290
0.2 ‐25
‐20
‐15
‐10
‐5
0
Evaporating Temp（℃）
5
10
1. Overview of R290 refrigerant
As a natural refrigerant, R290 has excellent properties, it can be used as an alternative in those applications that use R22,R134a or R404A as refrigerant.
2. R290 applied in room air conditioners
As we mentioned above, R290 has excellent properties, when it is used in room air conditioners to replace R22, it can get a higher efficiency.
Refrigerant
R22
Test Type
R290
R290
Drop in test
Reduce Condenser pipe diameter
Condenser pipe diameter (mm)
Ø7
Ø7
Ø5
Cooling Capacity (W)
2664
2295
2354
Power Input (W)
817
701
691
Energy Efficiency Ratio (W/W)
3.26
3.27
3.41
Refrigerant Charge amount (g)
850
360
275
2. R290 applied in room air conditioners z Appliance & Electronics World Expo 2015, Main Chinese air conditioner makers shown their highly efficiency R290 air conditioners. z After an official purchase agreement at the end of June, 243 new air conditioners using refrigerant R290 settled in their new home at Shenzhen University. Shenzhen is the first city in China to use R290 air conditioners.
2. R290 applied in room air conditioners In 2012, Godrej Launched its first HC‐290 split air conditioners in India. Since then more than 200,000 air conditioners have been placed on the market. Different R290 products MODEL
Cooling capacity
COP(EER)
Star rating(2013)
Charge size
GSC 12 FG 7
3375W
3.72
7‐star
0.31kg
GSC 18 FG 7
5000W
3.72
7‐star
0.36kg
GSC 18 FG 5
5000W
3.45
5‐star
0.36kg
Competing products Brand
Model
Cooling capacity
COP(EER)
Refrigerant
Brand#1
Model A
5050W
3.51
HCFC‐22
Brand#2
Model B
5300W
3.58
HCFC‐22
Brand#2
Model C
5200W
3.55
R‐410A
Brand#3
Model D
5275W
3.60
R‐410A
Brand#4
Model E
5200W
3.60
HFC‐32
3. R290 applied in heat pump water heater ¾ For small‐sized heat pump water heater（e.g. heat pump dishwasher），it could meet the limit of refrigerant capacity 150g by system optimization. ¾ For large scale heat pump water heater system, the water heater system placed indoors and the refrigerant circulation system placed outdoors, thus it could evade the legal limit charge of R290.
3. R290 applied in heat pump water heater R290 as a working fluid for heat pump has been used for many years in Europe.
Exhaust air HPWH R290 amount 300～490g
Air to water HPWH The capacities go up to about 19kW. Charge is from 1to 2.5kg.
Water to water HPWH Use about 600g of R290 for A capacity of around 10kW.
3. R290 applied in heat pump water heater
NxtHPG project：Next Generation of Heat Pumps working with natural fluids The general objective of NxtHPG is the development of a set of safe, reliable, high efficiency and high capacity heat pumps (>40 kW) .
3. R290 applied in heat pump water heater Highly Solution for HPWH
Technical features:
Super surface finishment to increase efficiency. Strengthen Pump Structure 10 years of design life time. water temperature above 65 ℃. Special oil supply system.
4. R290 applied in refrigeration equipment R1234yf
R404A
R600a
R290
Boiling point at 1.013 bar（℃）
‐29.45
‐46.6
‐11.75
‐42.11
ODP
4
0
0
0
GWP(100y)
4
3943
4
3
Inflammable grade
A2L
A1
A3
A3
120% W/cc
volume refrigerating capacity
250
7.2 ℃/54.4 ℃ ‐23.3 ℃/54.4 ℃
200
R404A R290 R12 R1234yf R600a
100% 80%
150 60%
40.58%
100
40.64%
40% 50
37.35%
37.04%
34.46%
20%
0 R404A
R290
R12
R1234yf
R600a
0%
7.2 ℃/54.4 ℃
‐23.3 ℃/54.4 ℃
The performance of R290 is close to R404A and capacity reduces less at low temperature. In small‐sized refrigerating application, the refrigerant charge can be accord with the legal limit. Different from R600a,there is no sub atmosphere pressure at low evaporation temperature for R290, so it can resist air enter the refrigeration system.
5. R290 applied in other applications Dehumidifier Due to the small R290 charge amount, R290 dehumidifiers have been put into mass production.
5. R290 applied in other applications Heat pump clothes dryer is another attractive application for R290. Highly Solution for HPD
Compatible : Frame size is 88mm, the smallest in the market Low allowable amount of refrigerant charge
High efficiency: Suitable for A++ & A+++ HPD system.
New motor: The flat performance curve of new motor is suitable for HPD condition. New motor now gains 4% higher efficiency with the same cost as old one.
6. R290 compressors developed in SHEC Dehumidifier Heat pump Capacity(kW) 220~240V 1Ф/50Hz
0.5
1.0
2.72/4.6/5.86/7.25/8.04
208~230V 1Ф/60Hz
4.6 7.25
1.5
Air conditioner
2.0
10.4 13.5
2.5
3.0
15.1 18.4
3.5
4
21.1 30.7
8.4 12.2
DC INV 5.86 10.2
16.2
∙ Stability structure design ∙ Strengthen Pump Structure ∙ Long life test for reliability ∙ Design life over 10 years
