REFRIGERATION AND
AIR CONDITIONING
Application Note
Cooling with solar power
More than 25 years of experience with 12-24 V DC compressors
With the BD Solar compressor Danfoss offers a refrigeration solu-
tion in places without power supply. Due to the exceptionally low
starting current batteries can be avoided if an ice bank is used for
energy storage.
The BD solar compressor is solar-powered. The unique feature is
that the sun energy can be stored in ice packs. During the night
and when there is no sun the ice packs keep the cabinet at desired
temperatures.
The BD Solar compressor opens numerous uses for the manufac-
turers within the rapidly growing area of mobile and stationary
refrigeration, e.g. storage and transportation of drugs, storage of
food under difcult conditions without power supply, ice cream
stands in holiday resorts, remote bottle coolers, refrigerators in
boats to name but a few.
The BD 35F compressor is using R134a as refrigerant and is appli-
cable for 12 and 24 V DC.
The BD 35F compressor covers a capacity range from 20 to 130 W.
Low, medium and high back pressure applications.
(See specication sheet on the next page).
Refrigerator sizes up to 120 liters and freezers up to 50 liters.
The BD compressor can be connected to a solar panel without the
use of any additional electronics.
Its wide voltage range (10-45 VDC) makes the BD very suitable for
photovoltaic powering.
An example on the latter was displayed at the UN Johannesburg
Summit September 2002. At this occasion Danfoss Compressors
supplied the compressor for a demo solar cabinet, complying with
the tough demands of UNESCO (storage for 5 days without power
supply).
The BD solar compressor is approved according to the e4 automo-
tive EMC standard and complies with the CE and C-tick standards.
Important features:
• High efciency/Low current consumption/high COP
• Wide voltage range from 10 to 45 VDC
• Staring current reduced to a minimum
• Variable capacity (manually adjustable or automatic)
• Adaptive energy optimization (AEO)
For further information please contact Danfoss.
CA.46.D1.02
Produced by Danfoss G1 advertising agency 04.03.UF.JN
Displacement cm
3
2.00 3.00
Oil quantity cm
3
150
Maximum refrigerant charge g 300 120
Free gas vol. in compressor housing cm
3
870
Weight: Compressor/Electronic unit kg 4.3/0.25
Application LBP/MBP/(HBP)
Evaporating temperature range °C -30 to 0 (10)
Voltage 10 - 45 V DC
Max. voltage 45 V
Max. machine compartment temperature °C 55
Comp. cooling at ambient temp. 43°C S or F
1
*
Technical data
BD35F
General
Application
Design
* depending on application
B
A
201
170
70
ø16
C
E
D
130
8269
120
20
105
28
78.
5
204
100
ø9
B2
B1
123
59
46
16
127
Compressor BD35F BD35K
Code number: Comp. without electronic unit 101Z0210 101Z0211
Code number: Electronic unit 12-24 V DC,
single packing
101N0400
Code number: Electronic unit 12-24 V DC,
industrial packing, 30 pcs.
101N0401
Dimensions
Height mm A 137
B 135
B1 128
B2 73
Suction connector location/I.D. mm C 6.2±0.09
Process connector location/I.D. mm D 6.2±0.09
Discharge connector location/I.D. mm E 5.0 +0.12/+0.20
Compressors on a pallet pcs. 120
Motor type Variable Speed
Resistance, all 3 windings (25°C) Ω 2.3 1.8
Approvals E4 72/245 95/54 0277 00
Motor
Performance data
R134a BD35F 10-45 V DC
Power consumption Watt
Current consumption (for 24 V applications the gures must be halved) Amp.
Capacity (CECOMAF) Watt
rpm \ °C
2,000
2,500
3,000
3,500
-30
16
20
23
26
-25
24
30
32
36
-23.3
27
34
36
40
-20
33
41
45
51
-15
44
55
62
70
-10
57
71
82
94
-5
72
90
105
122
0
90
112
133
5
111
139
10
136
rpm \ °C
2,000
2,500
3,000
3,500
-30
18
23
30
36
-25
23
31
36
43
-23.3
25
33
38
45
-20
29
38
43
51
-15
34
441
51
60
-10
38
50
59
69
-5
43
56
67
79
0
48
62
75
5
53
69
10
59
rpm \ °C
2,000
2,500
3,000
3,500
-30
1.5
1.9
2.5
3.0
-25
2.0
2.6
3.0
3.6
-23.3
2.1
2.8
3.2
3.8
-20
2.4
3.2
3.6
4.3
-15
2.8
3.7
4.2
5.0
-10
3.2
4.2
4.9
5.7
-5
3.6
4.7
5.6
6.5
0
4.0
5.2
6.2
5
4.5
5.8
10
5.0
Danfoss Compressors GmbH
Mads-Clausen-Strasse 7
P.O.Box 1443, D-24939 Flensburg
Phone: +49 461 4941-0
Telefax: +49 461 44715
www.danfoss.com/compressors
Performance data
R600a BD35K
**
10-45 V DC
Power consumption Watt
Current consumption (for 24 V applications the gures must be halved) Amp.
Capacity (CECOMAF) Watt
rpm \ °C
2,000
2,500
3,000
3,500
-30
13.2
16.8
20.7
24.9
-25
21.0
25.5
30.5
36.0
-23.3
23.8
28.8
34.3
40.2
-20
29.7
35.6
42.3
49.3
-15
39.6
47.5
56.3
65.1
-10
51.0
61.3
72.9
83.8*
-5
64.0
77.5
92.4*
106*
0
79.1
96.2*
115*
5
96.3*
118*
10
116*
rpm \ °C
2,000
2,500
3,000
3,500
-30
18.5
23.8
29.5
35.1
-25
22.5
28.5
35.9
42.7
-23.3
23.9
30.0
38.0
45.2
-20
26.4
32.9
41.8
49.7
-15
30.3
37.2
47.4
56.4
-10
34.2
41.5
52.9
63.0*
-5
38.0
45.8
58.6*
10669.7
0
41.8
50.2*
64.6*
5
45.7*
54.9*
10
49.6*
rpm \ °C
2,000
2,500
3,000
3,500
-30
1.54
1.98
2.46
2.93
-25
1.88
2.37
2.99
3.56
-23.3
1.99
2.50
3.16
3.76
-20
2.20
2.75
3.48
4.15
-15
2.53
3.10
3.95
4.70
-10
2.85
3.46
4.41
5.25*
-5
3.17
3.82
4.88*
5.81*
0
3.48
4.19*
5.38*
5
3.81*
4.58*
10
4.13*
* Fan cooling of electronic unit compulsory
** For stationary use only
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