تحليل فني-اقتصادي و بهينه‌سازي سيستم‌هاي اگزرژي پايين براي گرمايش آب و فضا درساختمان‌هاي مسكوني

Techno-economic analysis an‎d optimization of low exergy systems for domestic hot water an‎d space heating in residential buildings

مهندسي مكانيك

In today’s world, increasing energy consumption, depletion of fossil fuel resources, an‎d growing environmental concerns have highlighted the urgent need to adopt renewable energy sources an‎d high-efficiency heating an‎d cooling systems. Residential buildings, as major energy consumers, play a key role in reducing an‎d optimizing energy use. This study aims to design an‎d conduct a techno-economic analysis of heating systems based on the Low Exergy (LowEx) approach. The proposed system is a low-energy hybrid configuration comprising a Ground Source Heat Pump (GSHP) for space heating an‎d a Photovoltaic/ Thermal (PVT) collector for simultaneous electricity an‎d domestic hot water production. These components are integrated into a unified system. The performance of the system was simulated an‎d eva‎luated using Polysun software across six Iranian cities with diverse climates: Ardabil, Bojnord, Rasht, Kerman, Sanan‎daj, an‎d Bushehr. The analysis reveals that the system delivers multiple benefits, including high energy efficiency, multi-energy supply, reduced fossil fuel consumption, an‎d lower greenhouse gas emissions. Furthermore, climatic conditions such as temperature, solar radiation, an‎d humidity significantly influence the systemʹs overall performance. The proposed hybrid system demonstrates strong potential as an effective solution for improving energy efficiency an‎d promoting sustainable, low-exergy buildings, particularly in cold an‎d temperate regions.

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