Direct Digital Control of HVAC System and CO2-Based Demand Controlled Ventilation
Viktor Iliev1, Darko Babunski2, Igor Seso3, Saso Andovski4
1Viktor Iliev, Ss. Department of Cyril and Methodius, Mechanical Engineering, University of Skopje Macedonia.
2Darko Babunski, Department of Cyril and Methodius, Mechanical Engineering, University of Skopje Macedonia.
3Igor Seso, Department of Cyril and Methodius, Mechanical Engineering, University of Skopje Macedonia.
4Saso Andovski, Department of Mechanical Engineer, Pharmaceutical Industry, Skopje Macedonia.
Manuscript received on 13 February 2014 | Revised Manuscript received on 20 February 2014 | Manuscript Published on 28 February 2014 | PP: 12-17 | Volume-3 Issue-9, February 2014 | Retrieval Number: I1458023914/14©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In modern world, ‘saving’ or ‘cut down costs’ are commonly used expressions. As an answer to the demands, the idea of integrated facility management and building automation, as part of it, has been proposed and recognized. While overall operating costs of a building may represents as much as 75% of all the expenses incurred on the building, they can be reduced 25% by means of integrated facility management comprising all system functions during the life cycle of the building which is one step closer to energy efficient and environmental aware buildings. That is the point that is worth thinking. This paper presents simulation model and structure of a SCADA application for Direct Digital Control(DDC) of HVAC (Heating Ventilation and Air-Conditioning) system in cooling/heating mode and design a system that provides suitable air quality in school through the existing air conditioning system using CO2-based demand controlled ventilation. For simulation of this applications, PLC model number Siemens S7-200 is used, extended with an analog module EM235. Program package Micro WIN Step7 is used for control algorithm creation. SCADA application in software package WinCC is used for visualization and monitoring the work of the HVAC system.
Keywords: HVAC System, PLC, SCADA, DDC, CO2 Demand Controlled Ventilation.
Scope of the Article: Quality Control