Solar cold chain
Select a DC-compressor freezer from temperature duty, ambient heat, door openings and autonomy.
A high-efficiency variable-speed DC compressor can connect to a dedicated solar controller or battery system with fewer conversion stages. The useful benefit depends on insulation, refrigerant circuit, controller logic and cabinet loading. It is not enough to add a PV panel to an ordinary freezer.
Dairy chilling, frozen food and vaccines have different target temperatures, pull-down times, hygiene, alarm and validation needs. Vaccine use may require approved temperature range, data logging, holdover evidence and regulatory compliance; never treat a general food freezer as a medical refrigerator.
Use measured or certified daily energy at the expected Patna ambient, add door-opening and ageing margin, then size PV for the low-sun season and battery for required holdover. Confirm compressor starting method, controller voltage, cable drop, ventilation and emergency grid/generator input.
Record net volume, temperature class, insulation, compressor, refrigerant, rated energy, PV range, battery chemistry, warranty, local service, spare controller and remote alarm options. Arrange delivery-path and ventilation checks before dispatch.
Planning table
| Volume class | Typical use | Energy system | Price direction |
|---|---|---|---|
| 50–100 L | Small dairy/retail | PV + small battery | Model quote |
| 150–300 L | Dairy/food | PV + engineered storage | ₹1.2–₹3.5 lakh planning |
| 300–500 L | Commercial cold chain | Hybrid energy | Engineered quote |
| Medical/vaccine | Validated duty | Data logging + holdover | Compliance quote |
Indicative ranges are planning aids for Patna, not quotations. Capacity, pressure, tank metallurgy, roof work, piping, controls, GST, transport, electrical work and warranty can change the signed price.
SS Enterprises · Patna
Share the location, recent bill or hot-water demand, roof photographs and preferred timeline. We will identify the missing survey data before quoting.