Details

Title:

Stable Heat Release and Distribution from Batch Combustion of Wood

Author(s):

Kristjansson, K., Næss, E., Skreiberg, Ø., Haugen, M.S.

Document(s):

Abstract:

The purpose of this work is to develop functional heat storage solutions that can increase the utility of wood stoves in low- and zero-emission buildings by dampening the peak heat release and evenly distribute heat over an extended period of time by use of an intermediate heat storage system. Numerical calculations have shown that the use of latent heat storage materials is beneficial. Such heat storage materials generally have a low thermal conductivity and they can decompose if exposed to high temperatures. Numerical simulations were performed on a typical wood stove. The simulations showed that it is possible to store around 3.6 kWh in a compact and lightweight heat storage unit that dampens the heat release. Overheating of the heat storage material was difficult to avoid however, even with heat transfer control attempts using natural air circulation. Heat storage solutions using phase change materials show great promise, as they can increase the use of wood stoves. However, solutions for control of the heat transfer to the heat storage and improvement of heat transfer inside the heat storage have to be developed to ensure that the heat storage has a significant benefit.

Keywords:

heat, modelling, wood, stove, modeling

Topic:

R&D on Biomass Conversion Technologies for Heating, Electricity and Chemicals

Subtopic:

Solid biofuel combustion for small and medium scale applications

Event:

21st European Biomass Conference and Exhibition

Session:

2CO.4.5

Pages:

568 - 572

ISBN:

978-88-89407-53-0

Paper DOI:

10.5071/21stEUBCE2013-2CO.4.5

Price:

FREE