Solar fridge/freezer, Solar Dir. Drive 150, for blood bank

last updated : 2020/11/24
Code Description Budget Price Ship. weight Ship. vol.
FRIDGE/FREEZER, DULAS SOLAR DIR. DRIVE 150,vaccine+ice packs CH 6,821.48 170.4kg 0,935m³ Add
Dangerous : NRA No Restrict,Spec.Provision A67

General information

Large capacity solar direct drive refrigerator/freezer for vaccine storage and ice pack production in areas without reliable electricity supply.

Hot zone appliance: +5°C - +43°C.

This refrigerator/freezer system qualifies as “green” product as it is connected directly to a solar array and uses solar energy to directly freeze water or other cold storage material and then use the energy stored in the frozen bank to keep the refrigerator cold during the night and on cloudy days. 

No electrical supply needed.

No gas/diesel/kerosene or batteries required.

Refrigerator stores 102 litres of vaccines, freezer available for 12 kg of ice packs (20 x 0.6L).

Works at WHO solar reference period 3.5kWh/m2/24hr.

Battery free: the refrigerator stores energy via a non-corrosive “phase change material” (PCM). This liquid freezes and thaws at +5°C. With an almost infinite cycle life, the energy store does not need to be replaced. It cannot be damaged due to over discharge or charge.

WHO Grade A freeze protection rating: “User-independent freeze protection”, no risk of vaccine freezing.

WHO Performance, Quality and Safety (PQS) accreditation for +32°C and +43°C: E003/048 (Refrigerators and freezers/Solar Direct Drive Combined Refrigerator/Freezer).

Recommended solar array size of at least 600Wp, the refrigerator will operate with just 125W/m2 of solar radiation available.

For solar direct drive units, the correct sizing of the solar panel array for a specific site is complex and critical. It must be agreed with both the appliance manufacturer and with the Qualified Supplier of the solar energy system at the time of ordering.

Holdover time (duration during which a vaccine load is maintained at a temperature range between +2°C and +10°C with no sun and at maximum ambient temperature: 3.5 days at +43°C (83 hr 42 min) and 5.1 days at +32°C.

Compatible with a “Solar Socket”, which makes the excess power generated by the refrigerators’ solar array available to enable charging of other devices, such as mobile phones, laptops, lamps and other electrical devices.

Stacking baskets for easy-access stock management.

CFC-free insulation and refrigerant.

Built-in handle with lock, strong metal hinges, heavy duty castors for easy handling.

Corrosion resistance tested to DIN 898

Replaces XCOLFRIF8SB Fridge/freezer, solar, 85L, for blood bank, Dulas VC150FV


Additional information:




Solar direct drive refrigerator/freezer


Dulas VC155SSD

Climate zone

Hot (+43°C)

Operating temperature range

+5°C - +43°C

Gross volume

Refrigerator: 158.1 litres

Freezer: 42.9 litres

Vaccine storage capacity

102 litres

Ice pack storage capacity

12 kg (20 x 0.6L) at +32°C, 8.1 kg at +43°C

Ice pack freezing capacity

up to 2.4 kg/24 hr at +32°C

2.04 kg/24 hr at +43°C

Holdover time

83 hr 42 min at +43°C

122 hr 34 min at +32°C

Autonomy as per WHO PQS protocol (+2°C to +8°C with minimal sun and at max temp.)

77 hr 57 min at +43°C

118 hr 51 min at +32°C

Freeze protection

Grade A “User-independent freeze protection”

Energy source

Solar direct drive, electric compression, 2 x Danfoss / Secop BD35K compressor

Power consumption

0.72 kWh/day at stable running (+32°C)

Operating voltage

24 to 45 VDC

Minimum starting power

40W refrigerator

40W freezer

Minimum solar radiation for continuous running

125W/m² (600Wp solar array, to be agreed with manufacturer based on installation location)


CFC-free R600a

External dimensions

99.2 x 128.3 x 73.5 cm (HxWxD)

Shipping weight

170.4 kg


Spare parts


  • Compressor (Secop BD35K) - Part No. 101Z0211
  • Electronic Control Unit (Secop) - Part No. 101N0410
  • Dulas SDD-DC controller
  • MCB fridge - Part No. 693-CBTWF0100C0
  • Freezer on/off switch - Part No. 655-W51-A151-A1-5
  • Freezer fan - Part No. 89-4367.GN.
  • Temperature probes - Part No. SN4B15P1 + Part No. SN4B25P1


Last update: 22/05/2019