Solar powered refrigerators (SunDanzer)

SunDanzer's medical refrigerators are built to serve off-grid parts of the world and are powered directly by the sun. Pre-qualified by the World Health Organization(WHO) – PQS. SunDanzer’s 55-liter and 15-liter Battery-Free Vaccine Refrigerator solve a critical problem in the vaccine cold-chain by using solar direct-drive battery-free technology. 

Vaccines save lives, but only if kept at the right temperature. Keeping these heat-sensitive vaccines at the right temperature can be a true challenge. Especially in remote and under-developed areas around the world that have limited or no access to an electric power grid.

Thermal Energy Storage and Holdover Time
The WHO requires a holdover time of 3 days at 43°C (110°F), but all SunDanzer models exceed 4 days for extra reliability.

Our solar powered medical refrigerators are lined with a proprietary phase change material (PCM) that maintains the required temperature range of 2°C to 8°C for vaccine refrigeration. Since these units have no battery, their useful life is a decade or more with no scheduled maintenance.

Military Design Services
SunDanzer provides expertise in the development of solar-powered refrigeration for military applications. Since 2006, projects have included a diverse range of cooling systems demonstrated in a wide range of harsh environments. Contact us for your more information on our capabilities in:

• High-efficiency refrigeration cycle design
• Rugged refrigeration equipment packaging to MIL 810 standards
• Solar power and high voltage DC integration with refrigeration systems
• Medical product storage in power austere environments
• Battery-free solar operation and fuel use reduction with solar.
• Battery powered refrigeration systems.
• Bulk water cooling with solar power
• Environmental testing

Solar Powered Milk Coolers

SunDanzer solar-powered milk coolers are helping Kenyan dairy farmers earn more revenue for their milk production.

With funding from USAID, SunDanzer has developed a small-scale portable cooling system tailored for use in the Kenyan dairy market.

The system is comprised of a photovoltaic array, a chest refrigerator with phase change material inside and water (brine) bags to transfer the heat out of the milk.

The system stores energy in the freezing of the phase change material inside the refrigerator and doesn’t use batteries.

Features

• Cools 20L of evening milk to 4 °C overnight
• Use available 5-10L aluminum milk cans
• Chest refrigerator with internal phase change material
• Operate without batteries
• Operates from six 85 W PV solar panels in East/West orientation