The solar panel converts sunlight into DC power or electricity to charge the battery. This electricity (charge) is controlled via a charge controller which ensures that battery is properly charged and not damaged. DC appliances can then be powered directly from the battery.
Method 1. Accessory: AC/DC adaptor.
The DC refrigerator can be powered by AC power (standard wall plug in a home or office). This allows the refrigerator to be powered using conventional wall outlets and the unit can work without solar panels, batteries or a charge controller. It is important to note that our units operate with as little as 60W.
Method 2. Accessory: solar panels, battery, charge controller.
The solar panel converts sunlight into DC power or electricity to charge the battery. This electricity (charge) is controlled via a charge controller which ensures that the battery is charged properly and not damaged. The solar refrigerator/freezer can then be powered directly from the battery.
Method3. Accessory: charge controller, solar panel, battery, AC/DC auto transfer switch, AC/DC adaptor.
This method combines method 1 and 2. By adding an AC/DC auto transfer switch, the refrigerator can operate using AC power. This is useful when the battery is discharged due to multiple rainy or cloudy days. When the battery can't provide needed electricity, the auto transfer switch can automatically switch to AC electricity (110V /220V). When the battery is recharged, the refrigerator will go back to DC solar power (12V/24 V).
Solar Power Kits
According to the capacity of the refrigerator chosen, we provide the solar power kit of 2 panel, 4 panel, 6 panel etc. on customers request any component can be changed.
Features of 2 panel are stated below
- 2 - 230 Watt Solar Panels
- 1 - Tracer 40amp MPPT Charge Controller W/ Remote
- 2 - 420 Amp/Hr. Batteries
- 1 - 2/O 8" Battery Cable
- 1 - 10oz. Battery Corrosion Preventive Spray
- 2 - Breakers
- 1 - 50 Ft. 8/2 Wire prewired 600 Volt rated
- 1 - Solar Panel Mounting
- 1 - Tube Sealing Caulk
- 1 - Lighting Arrestor
- 1 - Ground Rod
- 1 - 40 Ft. Ground Wire
- 1 - Prewired & Preassembled
- 1 - Inverter
4 Panel kit
6 Panel Kit
8 Panel Kit.
Batteries
The battery most commonly used is the lead acid type, long life, deep cycle batteries are preferred. A capacity to run the refrigerator for five days without sun is recommended.
Charge Regulator
The charge regulator maintains the power supply within the current and voltage range tolerated by the refrigerator and prevents overcharge of the battery. Some models include an audible alarm or warning light to signal when battery voltage becomes low
AC/DC Automatic Switch
The automatic switch allows for power priority. If plugged into the DC port, the battery has priority. The system will operate using DC (battery power) and will only switch to AC power if the battery is exhausted. If plugged into the AC port, the system will operate using AC power and will switch to DC power (battery) only in the case of a power outage. The DC port is preferred as this does not cost any money to operate.
Construction details
WEIBER solar medical refrigerators have Outer body constructed out of thick PCRC, pre coated corrosion resistant GI sheet duly pre-treated with primers and rust proofing and paintedwith long lasting stove enamel or elegantly powder coated The inner construction is made of heavy gauge stainless steel sheet of SS-304 grade). The gap between the walls is filled high grade mineral glass wool, which ensures maximum thermal efficiency in our refrigerator.
It contains single door. This door is provided with magnetic door closer. This door is provided with lock and key arrangement.
Cooling:
An energy efficient cooling unit is installed in our solar medical refrigerators. We use high end CFC free compressors of Kirloskar/Tecumseh / Bitzer/ Danfoss make, conforming to latest international standards and guidelines.
REFRIGERATION UNIT:
Refrigeration unit comprises of customized high end compressor/cooling kit. Of Kirloskar /Tecumseh / Bitzer/ Dan Foss, models like:
The refrigerants used are R404A, R134A, R502, R-407 A/C/F R-22, R-717, R-134a and other
HFC’s. Temperature from 5 to -20°C can be achieved by using R-134A.
The refrigerants are environmental friendly, CFC free and easily available worldwide
Features:
- Capacity modulation and precision cooling
- High Energy Efficiency
- Compact
- Ozone-friendly refrigerants
- Proven Technology
- Wide Voltage Range
- Superior quality wear resistant part
- Steel fabricated ACC(air cooled condenser), low vibration, and low noise level.
- Improved SEER (Seasonal Energy Efficiency Ratio) - improved SEER gives more efficiency.
| APPLICATION |
|
| Evaporating Temp Range |
0-60 Degree C |
| Refrigerant |
R- 134a |
| Refrigerant Control |
CAPILLARY |
| Compressor Cooling |
STATIC |
| General Applications |
REFRIGERATOR/ DEEP FREEZER |
| RATED PERFORMANCE |
|
| Cooling Capacity -Rated |
282 – 650 Btu/hr (Model specific) |
| Power input -Rated |
80-110 Watts (Model Specific) |
| Energy Efficiency Ratio |
3.53 Btu/Whr |
| Current - Rated |
0.70 Amps |
| LRA -Rated |
N/A |
| Evaporating Temperature |
-23.3oC |
| Condensing Temperature |
54oC |
| Liquid Sub Cooling Temp |
32oC |
| Return Gas Temperature |
32oC |
| Ambient Temperature |
32oC |
| Pressure - Suction |
0.32 Kg/Cm2 |
| Pressure - Discharge |
12.9 Kg/Cm2 |
| MECHANICAL DATA |
|
| Design |
RECIPROCATINGC |
| No. of Cylinders |
One |
| Speed (Nominal) |
N/A |
| Oil Charge |
230 CC |
| Weight |
7.3 Kgs |
| Internal Pressure Relief Valve |
PROVIDED |
| MOTOR DATA |
|
| Motor Type |
PTCSIR |
| Frequency |
50 Hz |
| Phase |
SINGLE |
| Voltage -Rated |
230 Volts |
| Voltage -Range |
N/A |
| High Potential Test |
N/A |
| OVER LOAD PROTECTOR |
|
| Type |
EXTERNAL |
Temperature Range: Temperature range of our refrigerator is +2o C to +6o C controlled by nanotechnology based microprocessor temperature controller.
Temperature accuracy is +/- 1oC or better
Illumination:
Our solar medical refrigerators are provided with illumination system comprising of fluorescent lights
Insulation:
The gap of 120 mm between the outer and the inner wall is filled with special grade glass wool to prevent thermal losses.
Mineral Glass Wool Insulation: Glass mineral wool is one of the most environmentally friendly, stable and sustainable insulates available. Glass wool is incombustible by nature. Euro class classification is A. It does not propagate flames and toxic smokes. Thanks to a dense entanglement of materials with a low conduction and trapping a great amount of air, glass wool is an excellent thermal insulant. The thickest it is, the best thermal resistance it has, thus reducing heat losses in our equipment’s for better sensitivity and economical operations. And its impact on the environment in manufacture, use and disposal is minimal.
Air Circulation: Triple walled back of unit is fitted with two air circulation fans for maintaining temperature uniformly throughout the chamber
Features of Coaxial Circulation Fan:
- Vacuum impregnated stator winding with dr. back varnish under red baktol
- Non-hygroscopic.
- Best IR value
- Bright bar (EN - 8 class) shaft.
- Bush bearing of branded companies.
- Surge comparison testing in fans and pumps eliminates into turn short circulating of the stator.
