Traditional domestic heating systems, burning fossil fuels, using heat pumps and/or solar energy are using the most inefficient heat distribution systems in the real consumption place, the room.
By creating an unbalanced distribution of hot and cold air, this in turn is detrimental to human health and is giving the highest energy consumption in the room and hereby the highest loss in the transportation of the heat to the room.
Baseboard or skirting board central heating system.
In 1974, Erik Christian Vilhelm Keldmann, a mechanical engineer from Odense, Denmark improved the efficiency and energy consumption of central heating and air conditioning systems.
His ‘’heat embracement’’ skirting board systems he called Elpan for an electrical system and Wanpan for a hot water-heated system.
Both systems involve interconnecting module elements in such a way that the apparatus can extend along all the walls of the room.
The key in his invention is the balance in each module between heat delivered by radiation and convection. The created even comfort temperature, all over the living zone of the room, is created by the all embracing system by about 65 – 75 % radiation and approximately 25 – 35 % convection (circulating air ).
This created the experienced comfort temperature constant from floor to ceiling, which is the condition for having the highest thermal comfort for the lowest energy consumption.
Keldmann’s Elpan/Wanpan system which he patented in 1978, could be easily mounted by persons without special education.
It is today, after 45 years, still an elegant timeless designed product, the world’s smallest heating system giving freedom in furnishing even small rooms.
Keldmann also innovated an eco-friendly silent cooling system he called Norpan, where panels hung from the ceiling, over the office desks, with chilled water circulating in and out of the panel.
The human body radiates heat up to the panel and the panel sends back chilled air to cool the body. This is cooling for human beings at the lowest energy consumption.
Keldmann’s innovations threatened to disrupt the steel-based traditional radiator industry.
The Elpan – Wanpan systems proved the basis for disruption in a two year comparable test in four homes made by the biggest Danish newspaper “Berlingske Tidende – Boligen”, proving energy savings of 20 – 37 %., the system was then accepted.
But despite the world’s need for heat-saving systems, Elpan-Wanpan has not yet disrupted old fashioned traditional heating systems.
Erik Keldmann is still the president and owner of Keldmann Innovation A/S. With his son and partner Troels, they are now workings on new inventions to add value to Elpan/Wanpan all embracing heating systems.
Discover Solution 71: the French connection
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