Sound power level prediction in ducted heating, ventilating and air conditioning systems

Yayladere, Cemil
The aim of this study is to develop user friendly software to predict and analyze noise levels in enclosed spaces due to Heating, Ventilating and Air Conditioning (HVAC) System. Sound sources and transmission mechanisms are investigated by the prediction formulae and data originated from research studies and standards. For the analysis portion of the software, through the implementation of HVAC elements, sound power levels at the ventilation system outlet are obtained. General software structure is explained by different user-interface samples in the thesis. A case study is presented to display the capability of the software prepared in C# programming language within the scope of the study


Computer aided noise prediction in heating, ventilating and air conditioning systems
Güngör, Faruk Emre; Çalışkan, Mehmet; Department of Mechanical Engineering (2003)
This thesis aims at preparing a user-friendly software tool for the prediction and analysis of the noise generated in Heating, Ventilating and Air Conditioning (HVAC) Systems elaborating the standardized prediction formulae and data coming from the research studies. For the analysis portion of the software, different types of indoor noise criteria are introduced and implemented in the software to ease the investigation of the level and the quality of the sound perceived by the occupant in a room through suc...
Estimation of heating, ventilation and air conditioning(HVAC) noise levels in hospitals
Eroğlu, Merve; Çalışkan, Mehmet; Department of Mechanical Engineering (2019)
The aim of this study is to predict occupied space sound levels originating fromHeating Ventilation and Air Conditioning (HVAC) systems through air terminals and air outlets by using 2008 Standards of Air-Conditioning, Heating and Refrigeration Institute (AHRI) in order to provide hospital design information meeting acoustic goals with an emphasis onto low frequency noise termed as rumble. EXCEL Visual Basic for Applications (VBA) program is used for the development of software containing procedures of the ...
Hybrid Ventilation System Simulation for Several Cities in Turkey
Aradag, Selin; Bayer, Özgür; karataş, caner; poyraz, umit; kalkan, ozan; haciahmetoglu, firat; efe, yalcin; kahvecioglu, mustafa; goncu, alican (2011-03-01)
Hybrid ventilation systems combine the superior properties of natural and mechanical ventilation systems to reduce energy consumption. In this study, hybrid ventilation simulations were performed for several cities in Turkey, which have different climate conditions. Matlab/Simulink was utilized to perform the simulations. The results of these simulations were compared with that of regular air conditioning units in terms of energy consumption. A hybrid ventilation system which shows the general behaviour of ...
Thermal performance optimization of building aspect ratio and south window size in five cities having different climatic characteristics of Turkey
Inanici, MN; Demirbilek, FN (2000-01-01)
The aim of the study is to establish optimum building aspect ratios and south window sizes of residential buildings from thermal performance point of view. The effects of 6 different building aspect ratios and eight different south window sizes for each building aspect ratio are analyzed for apartments located at intermediate floors of buildings, by the aid of the computer based thermal analysis program SUNCODE-PC in five cities of Turkey: Erzurum, Ankara, Diyarbakir, Izmir, and Antalya. The results are eva...
Performance assessment of lime-pozzolan mortars with straw aggregate for sound and thermal insulation purposes
Kaplan, Miyase Merve; Ay, Bekir Özer; Department of Building Science in Architecture (2019)
The main concern of the study is to propose lime-based straw-mixed mortars with pozzolanic additives to be used as qualified building materials,particularly for sound and thermal insulation purposes and to assess theirperformance properties in this regard. Compositional properties of a specific type of traditional exterior plaster wereinspiring for the production of porous lime-based straw-mixed mortar samples with high thermal resistivity and sound absorption properties. Se...
Citation Formats
C. Yayladere, “Sound power level prediction in ducted heating, ventilating and air conditioning systems,” M.S. - Master of Science, Middle East Technical University, 2014.