Wood pellet and solar heating system development in Sweden - Initial result from system bench-marking test developments

Other conference contribution, 2011

Svensk Solenergi (Solar Energy Ass. of Sweden) and PellSam (Swedish Pellet Equipment Manufacturers Ass.) have joined forces to develop combined wood pellet and solar heating systems for the Nordic conditions. The cooperation has three main elements. A co-ordinated development project related to systems for single family houses (with co-financing from the Swedish Energy Agency), a common marketing campaign called “100%” (renewable heat) and certification of installers. The paper will focus on the experiences gained from the development of solar- and pellet combisystems with the help of a new test method. The development project comprises the development of a system design handbook and a combined system bench-marking and test method development. The test method, based on the Combitest method (1), is called Direct Characterization (DC) and the result is supposed to describe the annual system performance. The test method comprises laboratory measurements during 6 days and is based on selected weather data. The present set-up is for a typical single family building with 13 000 kWh space heating load and 3 000 kWh domestic hot water (DHW) load.