Overview
Our idea is to develop a stove capable of releasing more usable heat to the room than made available from biomass combustion, a wood fired adsorption heat pump stove. The idea is to replace the sand filling (thermal capacity) of the stove with an absorbent material such as zeolite. In the combustion process, the high temperature heat from the furnace is used to charge the adsorbent by evaporating adsorbate. The adsorbate vapor is in turn condensed on the stove surface, releasing the heat of condensation to the room. In this way, exergy potential is used to separate adsorbent from adsorbate. In a second phase, low temperature heat from the ambient outside air, sourced from the stove air supply and released through the chimney, is used to again evaporate the adsobate which again condenses on the adsorbent, releasing the sourced heat at increased temperature to the domestic room. In this way, the stove reaches an efficiency beyond 100% in respect to the combusted biomass fuel, thus also reducing the overall release of flue gas.
