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Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
Effektiva Plattvärmeväxlare som Effektiva Plattvärmeväxlare som Förångare i VärmepumparFörångare i Värmepumpar
--Vidare StudierVidare Studier
Joachim Claesson, Civ.Ing., DoktorandInst. Energiteknik
Avd. Tillämpad Termodynamik och KylteknikKTH
Stockholm
![Page 2: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/2.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
IntroduktionIntroduktion
![Page 3: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/3.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
IntroduktionIntroduktion
2·
W
L p
b
![Page 4: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/4.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
EnfaskarakteristikEnfaskarakteristikJämförelse med publicerade korrelationer
![Page 5: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/5.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
EnfaskarakteristikEnfaskarakteristik
1
10
100
1 000
10 000
100 000
1 000 000
1 10 100 1 000 10 000 100 000 1 000 000
Re
Nu
1
10
100
f
Nu
f
Kontinuerlig övergång mellan låga och höga Reynoldstal
![Page 6: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/6.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
TvåfaskarakteristikTvåfaskarakteristikHög ånghalt Låg ånghalt
![Page 7: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/7.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
0
10
20
30
40
50
60
70
80
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
X [-]
f l [-]
G = 48 kg/(s·m²)G = 36 kg/(s·m²)G = 25 kg/(s·m²)G = 18 kg/(s·m²)Regr. Eqn.
l 0.6
13.611.64
Xf
tp2l
l
p L
p L
f
2 l
g
p LX
p L
TvåfaskarakteristikTvåfaskarakteristik
![Page 8: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/8.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
25.951.929 15.721 x 1372.74 x
0.2 x 0.72
2l02
0; x 01
1; x 11
f
g0 l0p p
l0 tp l0p pf
0
2
4
6
8
10
12
0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00
Vapor quality, x [-]
[-
]TvåfaskarakteristikTvåfaskarakteristik
![Page 9: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/9.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
0
200
400
600
800
1 000
1 200
1 400
1 600
1 800
0 200 400 600 800 1 000 1 200 1 400 1 600 1 800
Measured pf [mbar]
Pre
dic
ted
p
f [m
bar
]
L-M
'Norm'
TvåfaskarakteristikTvåfaskarakteristik
![Page 10: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/10.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
1 2
T
t2
t1
tb´´t in ,b
tout,b
t in ,ref r
tout,ref r
in,b out,bm,Dutto
b out,b in,b b
m,Evap m,Sup
t tt t t t
Tryckfallet i förångaren försummas!
FörångareFörångareTypisk temperaturprofil
![Page 11: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/11.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareBoiling visualization
![Page 12: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/12.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareVariera yteffekt och massflöde
-5°C, 20%
0
200
400
600
800
1000
1200
1400
1600
0 1 000 2 000 3 000 4 000 5 000 6 000 7 000
q´´
re
fr CBE 1
CBE 2
CBE 3
CBE 4
CBE 5
CBE 6
![Page 13: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/13.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareVariera yteffekt och massflöde
-5°C, 30%
0
200
400
600
800
1000
1200
1400
1600
0 1 000 2 000 3 000 4 000 5 000 6 000 7 000
q´´
re
fr CBE 1
CBE 2
CBE 3
CBE 4
CBE 5
CBE 6
![Page 14: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/14.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareVariera yteffekt och massflöde
-5°C, 40%
0
200
400
600
800
1000
1200
1400
1600
0 1 000 2 000 3 000 4 000 5 000 6 000 7 000
q´´
re
fr
CBE 1
CBE 2
CBE 3
CBE 4
CBE 5
CBE 6
![Page 15: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/15.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareVariera massflöde och ingående ånghalt vid konstant yteffekt
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
2 100 W/m² 2 300 W/m² 2 500 W/m² 2 700 W/m²2 870 W/m² 3 100 W/m² 3 380 W/m² 3 700 W/m²4 000 W/m² 4 300 W/m² 4 600 W/m² 4 900 W/m²5 100 W/m² 5 350 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
2 100 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
2 300 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
2 500 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
2 700 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
2 870 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
3 100 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
3 380 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
3 700 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
4 000 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
4 300 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
4 600 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
4 900 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
5 100 W/m²
2.43 bar(a)
0
200
400
600
800
1 000
1 200
1 400
1 600
0.00 0.10 0.20 0.30 0.40 0.50xin [-]
HT
C [
W/m
²·K]
5 350 W/m²
![Page 16: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/16.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareVariera yteffekt och mass flöde
V80
0
10
20
30
40
50
60
70
80
0 10 20 30 40 50 60 70 80Nuexp [-]
Nu p
red
[-]
2.00, 202.00, 302.00, 402.43, 202.43, 302.43, 402.93, 102.93, 202.93, 302.93, 403.50, 103.50, 20-20%+20%
5
432
C
g
lCClo.r
C1 CoReBoCNu
C1 0.059500536C2 -0.826456531C3 0.522957184C4 0.318879653C5 -0.312867951
![Page 17: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/17.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareMotströms och medströmskoppling
0
200
400
600
800
1 000
1 200
1 400
0 2 4 6 8 10tbrine [°C]
re
fr [
W/m
²·K]
CBE A, CounterCBE A, CoCBE B, CounterCBE B, Co
![Page 18: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/18.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareInverkan av brineflödet
0
200
400
600
800
1 000
1 200
1 400
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16tbrine [°C]
R
,Dut
to [
kW
/m²·
K]
10kW 5kW
![Page 19: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/19.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångare
t2 = 2.5 °C
0
200
400
600
800
1 000
1 200
1 400
1 600
0 1 000 2 000 3 000 4 000 5 000 6 000q´´ [W/m²]
re
fr [
W/m
²·K
]
5°C
10°C
15°C
Inverkan av brineflödet
![Page 20: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/20.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångare
t2 = 0.5°C
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
0 1 000 2 000 3 000 4 000 5 000 6 000q´ ́[W/m²]
EB
T -
t 2,s
at
5°C
10°C
15°C
2,sat b,in outEBT t t t p
![Page 21: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/21.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångare
q´´
EB
T -
t 2,s
at
tsup
t3 = tsup
t1
t2
t4
brinesat ttEBT ,2
brinesat ttEBT ,2
“Optimal” brinetemperaturdifferens
![Page 22: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/22.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångare
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
0 2 4 6 8 10
LMTD [K]
F [
-]
3 K, 2 000 W/m²K
5 K, 2 000 W/m²K
10 K, 2 000 W/m²K
LMTD korrektionsfaktor
![Page 23: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/23.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareAreafördelning
![Page 24: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/24.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareFlödesdistribution
0. 0 0. 0
2. 0 2. 0
4. 0 4. 0
6. 0 6. 0
8. 0 8. 0
10. 0 10. 0
12. 0 12. 0
14. 0 14. 0
16. 0 16. 0
RG: 1 : 0 . 98 SC: NORM
(200.0)
(-10.0)
02/05/24
01:21:48
a21.2
0. 0 0. 0
2. 0 2. 0
4. 0 4. 0
6. 0 6. 0
8. 0 8. 0
10. 0 10. 0
12. 0 12. 0
14. 0 14. 0
16. 0 16. 0
RG: 1 : 0 . 98 SC: NORM
(200.0)
(-10.0)
02/05/24
14:54:35
a8.8
0. 0 0. 0
2. 0 2. 0
4. 0 4. 0
6. 0 6. 0
8. 0 8. 0
10. 0 10. 0
12. 0 12. 0
14. 0 14. 0
16. 0 16. 0
RG: 1 : 0 . 98 SC: NORM
(200.0)
(-10.0)
02/05/24
16:34:25
a18.2
0. 0 0. 0
2. 0 2. 0
4. 0 4. 0
6. 0 6. 0
8. 0 8. 0
10. 0 10. 0
12. 0 12. 0
14. 0 14. 0
16. 0 16. 0
RG: 1 : 0 . 98 SC: NORM
(200.0)
(-10.0)
02/05/24
17:33:28
a16.8
0. 0 0. 0
2. 0 2. 0
4. 0 4. 0
6. 0 6. 0
8. 0 8. 0
10. 0 10. 0
12. 0 12. 0
14. 0 14. 0
16. 0 16. 0
RG: 1 : 0 . 98 SC: NORM
(200.0)
(-10.0)
02/05/24
19:15:57
a18.4
tsup=2°C tsup= 4°C
tsup= 6°C tsup= 8°C tsup= 10°C
Compressor speed
50 Hz
![Page 25: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/25.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
FörångareFörångareFlödesdistribution
tsup=2°C tsup= 4°C
tsup= 6°C tsup= 8°C tsup= 10°C
Compressor speed
70 Hz
![Page 26: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/26.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
VärmepumpVärmepump35°C - 28°C Heating S ystem
0.0
0.1
0.2
0.3
0.4
0.5
0.6
20 24 28 32 36 40 44 48
Treturn [°C]
hH
[-]
VariableSpeed
ConstantSpeedJ . Claesson, 2002
KTH
45°C - 35°C Heating S ystem
0.0
0.1
0.2
0.3
0.4
0.5
0.6
20 24 28 32 36 40 44 48
Treturn [°C]
hH
[-]
VariableSpeed
ConstantSpeed
J . Claesson, 2002
KTH
55°C - 45°C Heating S ystem
0.0
0.1
0.2
0.3
0.4
0.5
0.6
20 24 28 32 36 40 44 48
Treturn [°C]
hH
[-]
VariableSpeed
ConstantSpeed
J . Claesson, 2002
KTH
![Page 27: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/27.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
VärmepumpVärmepump35 °C - 28 °C He ating Syste m
1.0
1.5
2.0
2.5
3.0
3.5
4.0
20 24 28 32 36 40 44 48
Treturn [°C]
CO
P1
Variable Speed
Constant SpeedJ . C l aesson, 2002
K T H
45 °C - 35 °C He ating Syste m
1.0
1.5
2.0
2.5
3.0
3.5
4.0
20 24 28 32 36 40 44 48
Treturn [°C]
CO
P1
Variable Speed
Constant SpeedJ . C l aesson, 2002
K T H
55 °C - 45 °C He ating Syste m
1.0
1.5
2.0
2.5
3.0
3.5
4.0
20 24 28 32 36 40 44 48
Treturn [°C]
CO
P1
Variable Speed
Constant SpeedJ . C l aesson, 2002
K T H
![Page 28: Joachim Claesson, M.Sc. Dept. of Energy Technology Div. of Applied Thermodynamics and Refrigeration Royal Institute of Technology Sweden Effektiva Plattvärmeväxlare](https://reader035.vdocuments.mx/reader035/viewer/2022070307/551a8666550346b52d8b591c/html5/thumbnails/28.jpg)
Joachim Claesson, M.Sc.Dept. of Energy TechnologyDiv. of Applied Thermodynamics and RefrigerationRoyal Institute of TechnologySweden
Under construction …Under construction …