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ISSN 2303-4521
Periodicals of Engineering and Natural Sciences Original Research
Vol. 9, No. 3, July 2021, pp.90-97
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90
Intelligent HVAC systems for smart modern building
Harith M. Ali 1, Rashid M Aldaiyat 2
1 Mechanical Department, Engineering College, University of Anbar, Ramadi, Al-Anbar, Iraq
2Ministry of Public Works (MPW), Kuwait
ABSTRACT
The modern smart building offers software solution and sensing the surrounding environment. However,
this will be allowed management easily for leaders that are providing better control and optimize heating,
ventilation, and air conditioning (HVAC)
،
as well as this is consider from the important topics in mechanical
engineering modern application. In this paper, a new intelligent HVAC system is proposed for modern smart
building. The proposed system is heavily based on one of the most efficient tools of artificial intelligence
which is a support vector machine. This technique will be depended on the data set to detect the HVAC
system for any building. In this case, it will save time as well as it has the ability to provide a suitable system
without any delay. The HVAC system that proposed in this paper is very important issues in design modern
building. According to for training and testing phases for the proposed system, we can easily notice efficiency
and effectiveness for the cooling and heating systems.
Keywords:
HVAC building automation, Intelligent control of HAVC systems, HVAC Systems
of Smart Building, Building management system.
Corresponding Author:
Harith M. Ali
Mechanical Department, Engineering
University of Anbar
Anbar, Iraq
eng.harith85@uoanbar.edu.iq
1. Introduction
In general, a smart building is foreseeable to be modified with alteration of occupancy requirements and also
the advance of computer technology and information technology. In-office business systems, the rapid updating
of microcomputer technology has dislodged the untampered implementation of computer technology. The
liberalization and development of telecommunication technology have, like, the efficiency of office business
systems and fostered internationalization [1]. Smart buildings are considered one of the most important modern
trends in civil engineering. The persons are spent most of their time in a different building (indoor) and they
aim to provide support, safety and comfort for their activities at minimum requirements of the expenses. The
coinciding of computation and communication capabilities in various buildings and their subsystems is
providing by the profound integration of the internet and cyber-physical technologies within these buildings and
their subsystems. These technologies present tools to obtain the buildings elaborate and reality intelligent
control methods [2]. In recent years, the building automation system had acquired a great amount of importance.
Many studies results have been improved and the previous methods use centralized control in pneumatic
actuators, the modified version of building automation system based on control distributed with direct digital
equipment. More recently, these systems have depended on the artificial intelligence techniques and the
network, where a hierarchical database was often utilized to detect and monitor facility malfunctioning [3], [4].
Because of the rapid growth in the information system and network technology, the working and living ways
have been influenced directly and indirectly. The intelligent buildings have gradually prolonged from office
building automation to residential building automation because the traditional residential buildings became not
able to accommodate the impact that is made by the developing technology. The concept of smart houses in
communities will be the future trend of buildings. In this paper, a prediction system is proposed for modern
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build to establish smart heating and cooling systems. This system will help mechanical engineering design
HVAC for a modern building. However, the basic structure of this building is shown in Figure 1.
Figure 1. Basic Infrastructure of smart building [5]
This paper is organized as follow: related works present in section 2. The methodology of this system presents
in section 3. Finally, the Conclusions presents in section 4.
2. Related works
The feasibility study of HVAC is considered the main concern for engineers. For this, we are working to find
an optimal solution for modern building by establishing HVAC systems. This proposed system is heavily based
on machine learning. In [6], an automatic control system of air conditioner and intruder detection surveillance
system for smart buildings is proposed. The proposed system has the ability to control home temperature and
the detection of any unknown person entering the house. In order to improve the efficiency of energy for
buildings, a software system perspective is presented in [7]. The results show that the proposed model provides
fine-grained building control, maximizing its occupants’ comfort and reduces energy consumption. In [5], the
main motives and systems of smart buildings are identified and correlated by associating them with the
beneficiaries: users, owners, and the environment. The results show eleven motives and eight systems, and these
can be improved by more than one motive. The review of recent researches on the models of artificial
intelligence technologies in smart buildings out of the concept of demand response programs (DRPs) and
building management system (BMS) is presented in [8]. This paper presents a discussion about the open future
directions and challenges of research on AI application for smart buildings. The surrogate object-
communication model concept with three-layered network architecture is used [9] to develop an intelligent
energy management network (IEMN). The results show that the proposed system presents many services such
as the distributed intelligent management, analysis online and the ability to processing the data. In [1], a platform
to manage intelligent environments behavior is presented. There are several services presented in this work, in
particular, the proposed model has the ability to support the needs of the emerging workplace such as hoteling
and extemporized group settings representing by users' preferences about their work environments separated
from the actual configurations of the physical spaces, they occupied at a given time. Discussion about remote
control system over the Internet or the telephone for the new generation air conditioner is presented [10]. The
results show that the control of Internet used indoors and the phone control will be in the outdoors or on the car
moving. Web-based access and the integration of BMS and FMS are two issues discussed in [11]. The two
issues are addressed to integrate control networks by the Internet protocols, infrastructures access BMS remotely
via the Internet and to use Internet/Intranet for building management. In [12], by depending on hybrid
knowledge, a model for a building management system is presented. The proposed approach enriches
management system awareness and presents better visions to the state of the system. In [13], some intelligent
buildings technologies and the internet things are studied to design model for buildings intelligent based on the
internet of things. This paper presents analysing of the wireless routing protocol for the buildings intelligent
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based on the internet of things, wireless networking modes and wireless communication protocol. This
technique has opened up new challenges in the field of building. However, our system is distinguished from
others by utilising machine learning to predicate heating or cooling systems for a modern building. In addition,
this system plays an important role to convert these systems for building from traditional techniques to smart.
3. Methodology
3.1 System overview
The proposed intelligent detection method comprises the main phases, which are presented in Figure 2.
Figure 2. Overall architecture of proposed detection system
After the dataset collected by the sensor, features have involved some letters and
symbols must be transferred into numbers to make the performance of the detection system more effective. in
this research, SVM is trained with the dataset for generating the intelligent detection system. Moreover, the
testing phase is required to detect heating and cooling states.
3.2 Dataset description
Dataset used in this research described in [15] were portion of the data set used. In this system, two sensors
commercial MOX (TGS 3870-A04 and SB-500 12, presented by Figaro and FIS) were exposed to mixtures
dynamic of humid synthetic air with (15–70% RH) and CO (0–20 ppm) in a gas chamber. According to the
manufacturer recommendations, the heater voltage was modified with 0.2–0.9 V range. The sensor output was
created at 3.5 Hz and then modified to 100 sample points. Each sensor presents a high
dimensional multivariate output with dimension 100.
Sensor data set collection
Cooling
Heating
Training phase
Testing Phase
SVM
SVM
No
yes
Preprocessing
Accuracy
training <=
threshold
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3.3 Experimental results
In this paper, results are employed to measure the efficiency of the proposed detection system. In more detail,
the results often tests are presented to measure system efficiency.
• Test 1
Room temperature (20 Celsius), more than (20 Celsius) gives cooling No. (1) less than or equal to (20 Celsius)
give heating No. (2).
Ytr= 197, C=186
Table 1. Performance metrics
Total number of fields
384
errRate
0.0026
conMat = (C +Ytr)
383
Result
(2) Results in the field of (C) cooling read by
heating in the field of (Ytr)
• Test 2
Room temperature (20 Celsius), more than (20 Celsius) gives cooling No. (1) less than or equal to (20 Celsius)
give heating No. (2).
Ytr= 194, C=185
Table 2. Performance metrics
Total number of fields
384
errRate
0.0026
conMat = (C +Ytr)
379
Result
(4) results in the field of (C) cooling, read of
heating in the field of (Ytr)
• Test 3
Room temperature (20 Celsius), more than (20 Celsius) gives cooling No. (1) less than or equal to (20 Celsius)
give heating No. (2).
Ytr= 198, C=185
Table 3. Performance metrics.
Total number of fields
384
errRate
0.0026
conMat = (C +Ytr)
383
Result
Result: (All heating is read as heating and all
cooling is read as cooling)
• Test 4
Room temperature (20 Celsius), more than (20 Celsius) gives cooling No. (1) less than or equal to (20 Celsius)
give heating No. (2).
Ytr= 197, C= 186
Table 4. Performance metrics
Total number of fields
384
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errRate
0.0026
conMat = (C +Ytr)
383
Result
(2) results in the field of (C) cooling, read of
heating in the field of (Ytr)
• Test 5
Room temperature (20 Celsius), more than (20 Celsius) gives cooling No. (1) less than or equal to (20 Celsius)
give heating No. (2).
Ytr= 198, C=185
Table 5. Performance metrics
Total number of fields
384
errRate
0.0026
conMat = (C +Ytr)
379
Result
All heating is read as heating and all cooling
is read as cooling
• Test 6
Room temperature (20 Celsius), more than (20 Celsius) gives cooling No. (1) less than or equal to (20 Celsius)
give heating No. (2).
Ytr= 199, C=185
Table 6. Performance metrics
Total number of fields
384
errRate
0
conMat = (C +Ytr)
384
Result
1 result in the field of (C) heating, read by
Tareq in the field of (Ytr)
• Test 7
Room temperature (20 Celsius), more than (20 Celsius) gives cooling No. (1) less than or equal to (20 Celsius)
give heating No. (2).
Ytr= 198, C=185
Table 7. Performance metrics.
Total number of fields
384
errRate
0.0026
conMat = (C +Ytr)
383
Result
All heating is considered heating and all
cooling is considered cooling
• Test 8
Room temperature (20 Celsius), more than (20 Celsius) gives cooling No. (1) less than or equal to (20 Celsius)
give heating No. (2).
Ytr= 198, C= 185
Table 8. Performance metrics.
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Total number of fields
384
errRate
0.0026
conMat = (C +Ytr)
383
Result
All heating is considered heating and all
cooling is considered cooling
• Test 9
Room temperature (20 Celsius), more than (20 Celsius) gives cooling No. (1) less than or equal to (20 Celsius)
give heating No. (2).
Ytr= 199, C= 185
Table 9. Performance metrics.
Total number of fields
384
errRate
0
conMat = (C +Ytr)
384
Result
1 result in the field of (C) heating, read by
cooling in the field of (Ytr)
• Test 10
Room temperature (20 Celsius), more than (20 Celsius) gives cooling No. (1) less than or equal to (20 Celsius)
give heating No. (2).
Ytr= 198, C= 186
Table 10. Performance metrics.
Total number of fields
384
errRate
0
conMat = (C +Ytr)
384
Result
1 result in the field of (C) cooling read by
heating in the field of (Ytr)
• Summary
The results of ten tests are summarized in table 11 as presented below:
Table 11. Summary Results of All Tests.
TEST
errRate
conMat
C+Ytr
Data
Reading
Results
Field:C
Field:Ytr
TEST 1
0.0026
186
197
383
384
Result: (2 results in the field of (C)
cooling read by heating in the Ytr field
TEST 2
0.0026
185
194
379
384
Result: (4 results in the field of (C)
cooling, read of heating in the field of
(Ytr))
TEST 3
0.0026
185
198
383
384
Result: (All heating is read as heating
and all cooling is read as cooling)
TEST 4
0.0026
186
197
383
384
Result: (2 results in the field of (C)
cooling, read of heating in the field of
(Ytr))
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TEST 5
0.0026
185
198
383
384
Result: (All heating is read as heating
and all cooling is read as cooling)
TEST 6
0
185
199
384
384
Result: (1 result in the field of (C)
heating, read by cooling in the field of
(Ytr))
TEST 7
0.0026
185
198
383
384
Result: (All heating is read as heating
and all cooling is read as cooling)
TEST 8
0.0026
185
198
383
384
Result: (All heating is read as heating
and all cooling is read as cooling)
TEST 9
0
185
199
384
384
Result: (1 result in the field of (C)
heating, read by cooling in the field of
(Ytr))
TEST
10
0
186
198
384
384
Result: (1 result in the field of (C)
cooling read by heating in the field of
(Ytr))
4. Conclusion
Mechanical Engineering is a hot topic for modern applications. One of these areas is heating and cooling system
at design modern building. Therefore, engineering spends money and time to configure HVAC system with all
of these efforts still build suffer from a shortage of services. For this, we design a modern system that has the
ability to predicate heating and cooling system for any building. However, this will arrange this HVAC system
automatically without any human interaction. On the other side, machine learning makes the proposed more
efficient by sensing all surrounding environment. In this case, the building will provide by HVAC automatically.
According to the testing/ evaluating system of the proposed system, we can easily notice that intelligent HVAC
can adopt with modern building with acceptance results.
In future directions, this proposed system will be tested with other data set to confirm its efficacy. Hence, this
dataset will be employed with other artificial tools, such as deep learning, neural networks and k nearest
neighbor.
5. References
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