IJE TRANSACTIONS C: Aspects Vol. 27, No. 3 (March 2014) 457-466   

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M. Ahmadzadehtalatapeh
( Received: June 16, 2013 – Accepted: August 22, 2013 )

Abstract    In this investigation, the performance of an existing heating system of a residential building incorporated with an array of solar thermal collectors was studied. For this purpose, transient systems simulation program model was assembled to estimate the hour-by-hour performance of the existing and the system equipped with the solar thermal collectors in terms of the provided space air conditions and energy consumption. In the modified heating system, the capability of the three standard types of solar collectors, namely, unglazed, glazed painted absorber, and evacuated tube liquid flat-plate solar collectors in providing required heating energy into the space was examined to determine the most appropriate configuration. Based on the simulation results, the systems incorporated with the solar thermal collectors are capable of providing the desired indoor air conditions for four and five months of the year. However, the energy performance of the systems indicates that the existing system incorporated with the glazed painted absorber solar collectors (Plant B) has the priority in terms of the energy savings, while could provide the desired indoor air conditions for five out of the eight months of the study and it is recommended to be implemented in the existing heating system.


Keywords    Energy saving, Heating system, Space air condition, Solar collector, TRNSYS.


چکیده    در این تحقیق عملکرد یک سیستم گرمایش مرکزی مجهز به کلکتورهای خورشیدی در یک ساختمان مسکونی مورد مطالعه قرار گرفته است. به این منظور عملکرد ساعت به ساعت سیستم موجود و سیستم مجهز به کلکتورهای خورشیدی از نظر شرایط هوای داخل و میزان مصرف انرژی تحت مدلهایی در نرم افزار شبیه ساز مورد ارزیابی قرار گرفته است. در سیستم جدید قابلیت سه نوع کلکتور خورشیدی استاندارد با نامهای,unglazed glazed painted و evacuated tube در فراهم کردن انرژی گرمایی مورد نیاز فضای داخل به منظور دستیابی به بهترین طرح مورد ارزیابی قرار گرفته است. بر اساس نتایج شبیه سازی سیستم مجهز به کلکتورهای خورشیدی قابلیت فراهم نمودن شرایط هوای مطلوب را در چهار و پنج ماه از سال را داشته اما عملکرد سیستمها از نظر مصرف انرژی نشان می دهد که سیستم مجهز به کلکتورهای خورشیدی از نوع glazed painted (Plant B) از اولویت بیشتری از نظر صرفه جویی در مصرف انرژی برخوردار است. بعلاوه این سیستم قابلیت فراهم نمودن هوای مطلوب داخل در پنج ماه از سال را داشته و برای سیستمهای گرمایش مرکزی توصیه می گردد.



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