کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1742247 1521915 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the environmental suitability of high- and low-enthalpy geothermal systems
ترجمه فارسی عنوان
در مورد مناسب بودن زیست محیطی سیستم های زمین گرمایی بالا و پایین آنتالپی
کلمات کلیدی
نیروگاه چرخه دودویی، تقاضای انرژی تجمعی، انرژی زمین گرمایی، پمپ حرارتی، ارزیابی چرخه حیات
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
چکیده انگلیسی


• Life cycle assessment of power generation using high-enthalpy geothermal resources.
• Life cycle assessment of heat generation using low-enthalpy geothermal resources.
• Life-cycle inventory data, energy balances and environmental impacts.
• Geothermal electricity is a promising alternative to fossil electricity.
• Suitable geothermal heat systems require eco-friendly electrical grids.

This article addresses the life cycle assessment of (i) power generation in a binary-cycle power plant using high-enthalpy geothermal resources, and (ii) heat generation in a closed-loop geothermal heat pump system using low-enthalpy resources. For the geothermal power system, production and injection wells show a high contribution to the environmental impacts, mainly due to activities such as drilling and casing. Power plant operation is also identified as an important source of impact because of working fluid losses. A favourable life-cycle energy balance is estimated for this system. Furthermore, when compared to fossil electricity, geothermal electricity is generally found to be a promising alternative. For the geothermal heat system, the electricity demands for heat generation and use are the main sources of impact. An unfavourable life-cycle energy performance is predicted for this system. When compared to fossil heat, the environmental suitability of geothermal heat highly depends on the availability of eco-friendly electrical grids.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geothermics - Volume 53, January 2015, Pages 27–37
نویسندگان
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