Abstract
Energy consumption and waste management are two significant challenges for human societies. To realize zero waste management, a pilot-scale demonstration of the conversion of municipal solid waste to energy/resource, which is comprised of a gasification system and a dehumidification air-conditioning to produce heat, cooling, and construction-used char, is investigated and analyzed. The waste heat (60 °C hot water) from a gasification system is applied to drive a dehumidification system for cooling, while the char from the gasification is added to the construction material. The effect of cycle time and air flow rate on the performance of the dehumidification system is also analyzed. The waste to energy efficiency of 57.2%, the maximum average moisture removal of 11.6 g/kgDA, and thermal coefficient of performance of 0.76 are obtained under the climate conditions of 34 °C, 67.5% relative humidity in Singapore. Through comparison between the brand new and used desiccant coated heat exchanger, it is noted that there is a 29.37% decrease of average moisture removal corresponding with a 17.1% loss of thermal coefficient of performance. A 14.6% compressive strength increment after seven days of curing age and 10.3% of compressive strength increment after 28 days are investigated by studying the mechanical behavior of a mortar containing char.
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