Speaker
Description
Carbon neutrality is recognized as a global trend and a direction that all mankind should pursue. In urban buildings, zero-energy buildings are also popular due to energy efficiency for carbon neutrality and the introduction of new and renewable energy. Rooftop smart farm that can be installed on the roof of a building to reduce building energy, secure crop productivity through urban agriculture, secure green space in the building, and enjoy leisure is drawing attention.
Modern buildings still require cooling, heating, and electrical energy, and smart farms also require cooling, heating energy in addition to electrical energy for lighting. In addition, plant growth requires not only oxygen necessary for respiration but also carbon dioxide to help photosynthesis. Combustion systems are sometimes used for carbon dioxide fertilization, but their control is important because high concentrations of harmful exhaust gases not only hinder plant growth but can even lead to plant death. Harmful exhaust gases generated from the combustion system include carbon mono-oxide, unburned hydrocarbon, and Nitrogen Oxide.
A quad-generation system is developed that can supply electric energy, hot water, cold water, and carbon dioxide by using a conventional generator using a gas engine. For safe use in smart farm plants, carbon mono-oxide and nitrogen oxide in exhaust gas have been developed to a level of less than 10 ppm. In terms of energy efficiency, we are aiming for a gas engine quad-generation system with a total efficiency of 94% and a power generation efficiency of 34% or more.
This study will develop a quad-generation system with high power generation efficiency, thermal efficiency, and low harmful exhaust gas level for carbon neutrality, preservation of the atmospheric environment, and stable growth of plants.
References
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| Keywords | multi-generation, rooftop smart-farm, exhaust gas |
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