BRAC Dairy Eliminates Milk Spoilage
The partnership between BRAC and Promethean Power Systems to reduce spoilage of raw milk produced by dairy farmers has proven a success. Buoyed by the success of their initial investment in five Rapid Milk Chillers, BRAC has recently purchased 19 more similar units from Promethean. The aim is to link more dairy farmers to key markets while maintaining the quality of raw milk, said a statement.
BRAC collects milk from over 100 village-level chilling centers, where at least 50,000 dairy farmers pool their daily produce, to sell packaged dairy products under its Aarong brand. In the long run, this is expected to bring more consumers into the fold of the formal, processed and packaged milk market in Bangladesh.
Promethean Power’s Rapid Milk Chillers use a patented thermal energy storage technology that instantly chills raw milk to 4 degrees centigrade at the milk collection centers even in the absence of grid electricity and without using a diesel generator, has revolutionized quality assurance mechanism by helping farmers preserve milk it is collected for processing by overcoming common limitations faced by farmers in the developing nations – irregular electricity supply, poor infrastructure, and expensive diesel generator backup.
As milk spoilage rates have dramatically dipped following the installation of the Rapid Milk Chillers, BRAC has been able to instill greater confidence among dairy farmers about finding guaranteed offtake of their milk every day. As timely milk chilling continues to bring better returns to farmers based on the quality of milk, many have made profits substantial enough to afford an investment in new cows — a mark of both progress and prestige in the local community.
Nour-E-Alom, Manager, Milk Procurement, BRAC Dairy and Food Enterprise, said that they were looking for a solution that would be cost effective, eco-friendly, and scalable. “Promethean’s solution for our milk collection center is both cost effective and eco-friendly and we are extremely happy with the results. By installing Promethean’s Rapid Milk Chillers in the villages, we are able to eliminate wastage by over 90% and increase the volume of our collection,” he said.
Jofi Joseph, Director of Sales and Marketing, Promethean Power Systems, said, “By helping chill raw milk at the village collection center without the need for a diesel generator, Promethean’s Rapid Milk Chillers present a simple and cost-effective solution to similar problems that developing milk-producing nations face. BRAC, with its Aarong brand, is doing a commendable job of helping farmers augment their income by linking them to urban markets. We are pleased to help BRAC realize its mission to channel quality milk from rural to urban areas.”
Promethean Power’s innovative solutions have already attracted attention and is gaining in popularity across the subcontinent.
A Better Way to Keep Milk Fresh
Richard Martin | MIT Technology Review
July 21, 2015
Sometime this week a large milk refrigerator will arrive in Dhaka, the capital of Bangladesh. Since Bangladesh produces nearly four million tons of milk per year, that hardly seems remarkable; but this is a special kind of refrigerator.
Made by Promethean Power Systems, a company based in Pune, India, and Boston, the system keeps milk chilled with a thermal battery that stores energy and releases it, as cooling power, over the course of a day. Like India, Bangladesh has an outdated power grid that supplies electricity sporadically—often as little as a few hours per day. Rural dairy farmers on the subcontinent bring their milk to village collection centers that typically rely on diesel generators, a costly, dirty way of providing electricity.
Two Americans, Sam White and Sorin Grama, founded Promethean Power in 2007 to address a simple but widespread and pressing problem: how to keep milk cold without burning diesel fuel. They’ve been selling refrigerators in India for two years; this week marks their first export to neighboring Bangladesh.
“We’ve been at this for eight years,” says White, and “we’ve gone through all sorts of different technologies, attempts, and failures to figure out a solution.”
At first, he says, they were determined to craft a technology that relied on solar power—a noble attempt that ultimately failed because solar power, like grid power in India and Bangladesh, is by its nature intermittent, and refrigerators need constant power. Eventually they settled on a thermal energy storage system that uses a phase-change material to store energy in the form of ice. When the grid is operating, a portion of the material freezes, and the battery circulates that thermal energy into a heat exchanger to keep milk chilled over the course of the day. The thermal battery can store up to 28 kilowatt-hours of energy.
Read the full story here.