Behrang Sajadi
School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
[ 1 ] - Optimization of the PCM-integrated solar domestic hot water system under different thermal stratification conditions
Many researchers have investigated how to increase the overall efficiency of solar-driven thermal systems. Several key parameters, such as collector efficiency and storage tank characteristics, may impose some constraints on the annual solar fraction (ASF) of such systems. In this paper, the behaviour of integrating the phase change material (PCM) in SDHW systems is modelled and optimized n...
[ 2 ] - The effect of hemispherical chevrons angle, depth, and pitch on the convective heat transfer coefficient and pressure drop in compact plate heat exchangers
Plate heat exchangers are widely used in industries due to their special characteristics, such as high thermal efficiency, small size, light weight, easy installation, maintenance, and cleaning. The purpose of this study is to consider the effect of depth, angle, and pitch of hemispheric Chevrons on the convective heat transfer coefficient and pressure drop. In the simulation of the heat ex...
[ 3 ] - On the effect of using phase change materials in energy consumption and CO2 emission in buildings in Iran: a climatic and parametric study
Energy crisis, global warming and other environmental issues are what motivate researchers to find new strategies to reduce energy consumption in buildings. Recently, using phase change materials (PCM) in the building’s envelopes has drawn significant attention as an energy-saving method, which helps in increasing the building’s thermal capacity. In the present research, the effects of the ...
[ 4 ] - مطالعه عددی تأثیر دمای ذوب بر کارایی مواد تغییر فازدهنده در کاهش مصرف انرژی ساختمان
در این تحقیق تأثیر استفاده از مواد تغییر فاز دهنده بر کاهش مصرف سالانه انرژی سیستم تهویه مطبوع برای اتاقی واقع در یک ساختمان چندطبقه با استفاده از نرم‌افزار انرژی‌پلاس بررسی شده است. از آنجا که نقطه ذوب مواد تغییر فاز دهنده اهمیت زیادی در میزان اثربخشی آن‌ها دارد، به‌عنوان بخشی از تحقیق حاضر، تأثیر شرایط اقلیمی ایران بر روی دمای ذوب مناسب برای ماده تغییر فاز دهنده در 4 شهر تبریز در اقلیم سرد، ت...
[ 5 ] - Toward the design of zero energy buildings (ZEB) in Iran: Climatic study
In this research, a combination of passive and active methods is used to design a nearly zero energy building in four major climatic regions of Iran, including cold, mild, dry-warm, and wet-warm ones. The annual energy consumption analysis is performed using DesignBuilder® software. The passive strategies include Trombe Wall, blue roof, and thermochromic windows, and the active methods are usin...
Co-Authors