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首页> 外文期刊>Energy Conversion & Management >Impact of ambient temperature on the effectiveness of inlet air cooling in a co-digestion biogas plant equipped with a mGT
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Impact of ambient temperature on the effectiveness of inlet air cooling in a co-digestion biogas plant equipped with a mGT

机译：环境温度对配备MGT的共消化沼气厂中入口空气冷却有效性的影响

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摘要

Biogas plants are an interesting solution for production of clean energy. Biogas produced in an anaerobic digester can be used locally to produce electric energy in an internal combustion engine or in a micro-gas turbine. A portion of the waste heat is used to keep the digester at a constant temperature which is a necessary condition for a correct operation of the digester. Generally, waste heat overcomes that necessary to keep the digester at the desired temperature and a big portion of this thermal energy is dissipated. Many solutions exist to increase the amount of heat recovered. In this study, the use of an absorption chiller to decrease the inlet temperature of a micro-gas turbine operating with biogas was considered. The advantage of this solution relies in a more stable operation of the micro gas turbine and an increase in the power output. The integration of the absorber chiller in the biogas plant and the effect of the ambient conditions were investigated in detail. The study was based on an existing plant operating near Pisa (Italy). A model of the system has been developed in AMESim and a numerical simulation has been performed. The effects of different temperature profiles, corresponding to different climate conditions, have been investigated both from the energy and economic points of view. The results showed that local climate conditions strongly influence the effectiveness and the profitability of the inlet turbine air cooling technique. In those climates where the temperatures are constantly high over the year, this technique may lead to interesting benefits and profitability.
机译：沼气植物是一种有趣的生产清洁能量。在厌氧蒸煮器中产生的沼气可以在本地使用以在内燃机或微燃气轮机中产生电能。废热的一部分用于将蒸煮器保持在恒定温度下，这是蒸煮器正确操作的必要条件。通常，废热克服的是将蒸煮器保持在所需温度和该热能的大部分的必要条件下耗尽。存在许多解决方案以增加回收的热量。在该研究中，考虑了使用吸收冷却器来降低与沼气操作的微燃气涡轮机的入口温度。该解决方案的优点依赖于微燃气轮机的更稳定操作和功率输出的增加。详细研究了吸收剂冷却器在沼气植物中的整合和环境条件的效果。该研究基于靠近比萨（意大利）的现有植物。系统已经开发了系统的模型，并且已经执行了数值模拟。从能量和经济观点都研究了不同温度曲线的影响，对应于不同的气候条件。结果表明，局部气候条件强烈影响了入口涡轮机空气冷却技术的效率和盈利能力。在那些温度在今年的温度不断旺盛的那些气候中，这种技术可能导致有趣的益处和盈利能力。

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