Sunamp Ltd. has signed a memo of understanding to supply its PCM-based heat batteries to Fischer Future Heat under an original equipment manufacturer contract. Sunamp, based in Edinburgh, Scotland, says the deal involves "many thousands" of units and will be worth seven figures as sales ramp up. Leicester-based Fischer began selling the product, dubbed the Aquafficient, in February.
In an email interview, Sunamp CEO Andrew Bissell filled in a few details on the deal.
Q: Can you tell me about the PCM aspects of this product?
A: "Sunamp’s success in making a super-stable (40,000+ cycles tested) salt hydrate PCM (very energy dense) at 58C and combining it (in a highly insulated, cuboid enclosure) with a very high power heat exchanger (high power, high flow rate hot water) made a whole class of heat battery devices possible. Not least electric water heaters, with about 4x the energy density of a classic electric hot water tank and 5+ gallon per minute performance. A key innovation (patent pending around the details) was to use electric elements immersed inside the PCM to melt the PCM and charge the heat battery."
Q: What can you tell me about the manufacturing process?
A: "Because Aquafficient by Fischer Future Heat is based on Sunamp UniQ, it’s effectively been in production at Sunamp Factory for nearly a year.
"By going down this OEM white label route, Fischer Future Heat could hit the ground running with Aquafficient - which they did! Sunamp’s manufacturing has had to scale already this year from 75 units a month to 75 units a week, with 75 a day on the near horizon. This to keep up with exponentially rising combined demand from Fischer, other OEMs, and large housing and regeneration projects.
“We keep scaling production and the demand keeps outpacing us! We're working really hard on scaling up production and appreciate our partners’ and their customers patience when they sometimes have to wait quite a number of weeks for the product they want.”