PILOT SCALE DECOMPOSITION HEAT EXTRACTION AND UTILIZATION SYSTEM BUILT INTO THE “GYAL MUNICIPAL SOLID WASTE LANDFILL”

摘要

Our goal was to extract the decomposition heat from MSW landfills. In order to study the processes a complete pilot scale system was designed, built and put into operation. The technology consisted of heat extraction part, heat consumption part and auxiliary equipments including a sophisticated computer data acquisition system. The heat was extracted by two horizontal heat exchange pipelines (”slinky” and “ladyfinger”) and four vertical heat wells. The heat was consumed by a greenhouse and a heat exchange pipeline in the leachate pond. The introduced "tube shell with heat generation” model described well the pilot scale tests. The operation of decomposition heat extraction consisted of two phases, the heat extraction and the regeneration phases; therefore the effective specific power of decomposition heat generation was introduced. Measured and simulated magnitude of this potential was found to be 0.18 W/m~3.