مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

بررسی و مقایسه فنی- اقتصادی سیستم‌های سرمایشی و گرمایشی در دانشکده فنی و مهندسی دانشگاه اراک

نوع مقاله : پژوهشی اصیل

نویسندگان
گروه مهندسی مکانیک، دانشکده فنی و مهندسی، دانشگاه اراک، اراک، ایران
چکیده
در این مقاله به بررسی فنی- اقتصادی بارهای حرارتی و برودتی در دانشکده فنی و مهندسی دانشگاه اراک پرداخته شده است. سیستم‌های سنتی، مدرن و پرکاربرد تهویه مطبوع مانند سیستم‌های CAV، VAV، فن کوئل (بررسی هر سه سیستم ذکرشده با چیلر جذبی شعله مستقیم و چیلر تراکمی اسکرو)، سیستم VRF، کولر گازی و کولر آبی ( مجموعاً ۹ سیستم مختلف) برای دانشکده طراحی و به صورت فنی- اقتصادی با یکدیگر مقایسه می‌شود. در این بررسی هزینه‌های مصارف آب، برق و گاز، خرید سیستم‌ها و تجهیزات مربوطه، نصب تجهیزات، تعمیرات و نگهداری سیستم‌های مورد بررسی، محاسبه و با یکدیگر مقایسه می‌شوند و سپس این کار در بارهای برودتی مختلف نیز انجام می‌شود تا نتایج به دست آمده مختص دانشکده فنی دانشگاه اراک نباشد و قابل استفاده برای تمامی سیستم‌های موجود در کل ایران باشد. در پایان نشان داده شده است که کولر آبی کمترین هزینه جاری و اولیه را در میان سیستم‌های دیگر دارا می‌باشند؛ ولی از آنجایی که این سیستم‌ قابلیت تعیین مقدار رطوبت و دمای ایده‌آل برای فضا مورد نظر را ندارند، نمی‌توان آن را به عنوان یک سیستم ایده‌آل و استاندارد در نظر گرفت. همچنین نشان داده شده است که هزینه‌های اولیه و جاری در چیلرهای تراکمی کمتر از چیلرهای جذبی است و سیستم‌های VAV نسبت به سیستم‌های CAV و فن‌کویل عملکرد بهتری دارند و سیستم VRF بعد از سیستم کولر آبی دارای کمترین هزینه جاری و اولیه بین سیستم‌های مورد بررسی به خصوص سیستم کولر گازی است و می‌توان این سیستم را به علت کنترل هوشمند و بهینه به عنوان یک سیستم ایده‌آل انتخاب نمود.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Technical-Economical Investigation and Comparison of Cooling and Heating Systems in Faculty of Engineering of Arak University

نویسندگان English

M. Sharjerdi
H. Safikhani
Mechanical Engineering Department, Engineering Faculty, Arak University, Arak, Iran
چکیده English

In this article, technical-economical investigation of heating and cooling loads in faculty of engineering of Arak university, Iran has been investigated. The tradiational and modern conditioner systems such as CAV, VAV, fan coil systems (all three systems are tested with direct fired absorption chiller and screw chiller), VRF system, split system and evaporative cooling system (in total 9 different systems) are designed for this faculty and are compared technically-economically. In this article, the costs of water, electricity and gas, purchase of systems and equipment, maintenance and repair of equipment of the examined systems are calculated and are compared with each other and then this work is done in different cooling loads, so that the results are not limited to the technical faculty of Arak university and can be used for all existing systems throughout the country. In the end, it is shown, that the evaporative cooling system has the lowest current and initial cost among the other systems. however, since this systems do not have the ability to determination of the amount of humidity and ideal temperature for the desired space can not be considered as an ideal and standard system. Also it is shown, that the current and initial costs of compression chiller are less than of absorption chiller and VAV systems have the better performance than CAV and fan coil systems, and the VRF system, after the evaporative cooling system, has the lowest current and initial cost among the examined systems, especially the split system. Due to the intelligent and optimal control of this system, it can be selected as an ideal system.

کلیدواژه‌ها English

Traditional and Modern Cooling and Heating Systems
Technical-Economical Investigation
Energy Consumption Optimization
Variable Discharge
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