کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6695415 1428271 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Virtual outdoor air flow meter for an existing HVAC system in heating mode
ترجمه فارسی عنوان
جریان هوا مجازی در فضای باز برای یک سیستم تهویه مطبوع موجود در حالت گرمایش
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Measurements from the operation of Heating, Ventilation and Air conditioning (HVAC) system are collected by Building Automation System (BAS) mostly for control purpose. In many air handling units (AHUs) the airflow meter is not installed on the outdoor air stream to reduce the initial costs. To provide such a missing information needed for the ongoing commissioning of HVAC system, a virtual flow meter (VFM) should be implemented in the BAS. This paper presents VFMs for the heating season when the heat recovery coils are used. Two models are presented which predict the outdoor air ratio (factor α), in the absence of such an air flow meter, by using BAS trend data. Two energy balance equations, one for the air mixing box and another for the heat recovery coils, are coupled. The results from a case study building show that the two models predict the daily average outdoor air ratio of 0.89 and 0.87, respectively, compared with the reference daily average ratio of 0.86.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Automation in Construction - Volume 92, August 2018, Pages 166-172
نویسندگان
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