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Research Papers: Energy Systems Analysis

Comparison of Energy Consumption for Residential Thermal Models With Actual Measurements

[+] Author and Article Information
Waleed M. A. Hamanah

Electrical Engineering Department,
College of Engineering,
King Fahd University of Petroleum
and Minerals (KFUPM),
P.O. Box 1151,
Dhahran 31261, Saudi Arabia;
Center for Engineering Research (CER),
Research Institute,
King Fahd University of Petroleum
and Minerals (KFUPM),
P.O. Box 1151,
Dhahran 31261, Saudi Arabia
e-mail: g201105910@kfupm.edu.sa

Mahmoud Kassas

Electrical Engineering Department,
College of Engineering,
King Fahd University of Petroleum
and Minerals (KFUPM),
P.O. Box 1151,
Dhahran 31261, Saudi Arabia
e-mail: mkassas@kfupm.edu.sa

Esmail M. A. Mokheimer

Mem. ASME
Mechanical Engineering Department,
College of Engineering,
King Fahd University of Petroleum
and Minerals (KFUPM),
P. O. Box 279,
Dhahran 31261, Saudi Arabia;
Center of Research Excellence in
Energy Efficiency (CEEE),
King Fahd University of Petroleum
and Minerals (KFUPM),
P. O. Box 279,
Dhahran 31261, Saudi Arabia;
Center of Research Excellence
in Renewable Energy (CoRe-RE),
King Fahd University of Petroleum
and Minerals (KFUPM),
P. O. Box 279,
Dhahran 31261, Saudi Arabia
e-mail: esmailm@kfupm.edu.sa

Chokri Belhaj Ahmed

Electrical Engineering Department,
College of Engineering,
King Fahd University of Petroleum
and Minerals (KFUPM),
P.O. Box 1151,
Dhahran 31261, Saudi Arabia
e-mail: bachokri@kfupm.edu.sa

Syed Ahmed M. Said

Mechanical Engineering Department,
College of Engineering,
King Fahd University of Petroleum
and Minerals (KFUPM),
P. O. Box 5069,
Dhahran 31261, Saudi Arabia
e-mail: samsaid@kfupm.edu.sa

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received September 18, 2018; final manuscript received September 30, 2018; published online October 26, 2018. Editor: Hameed Metghalchi.

J. Energy Resour. Technol 141(3), 032002 (Oct 26, 2018) (15 pages) Paper No: JERT-18-1723; doi: 10.1115/1.4041663 History: Received September 18, 2018; Revised September 30, 2018

High temperature that reaches to 50 °C in summer, high humidity, and dust storms are considered as the main characteristics of the climate of many countries around the world such as those in the Gulf States, Asia, and Africa. According to the latest studies, air conditioning (A/C) systems in the residential areas used around 65% of the generated energy. This paper is aimed at presenting a new residential thermal model that can be used to estimate the energy consumption of A/C units used to achieve comfort in houses. The results of the newly developed residential thermal model will be compared with exiting residential thermal models using simscape in matlab program and data measurements. Different physical properties of the house that affect the heat gains through the house envelop at different weather conditions, and the internal heat gains are taken into account in this study. Hourly, daily, monthly, and annually energy consumption and coefficient of performance (COP) are calculated, based on actual hourly outdoor temperature measurements and indoor generation heat for the year 2017, using the three thermal models and compared with the pertinent actual measurements. The total measured energy consumption for nine months' work in 2017 was 14488.09 kWh, and the total energy consumption predicted by the simulation for the simple model, intermediate model, and comprehensive model were 8438.40 kWh, 12656.10 kWh, and 13900.61 kWh, respectively, with deviations of 41.75%, 12.65%, and 4.05%, respectively, from the actual measurements.

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Figures

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Fig. 5

HVAC monitoring and measurement system

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Fig. 6

Floor, ducts, and sensor's locations in the houses

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Fig. 10

Intermediate house thermal model

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Fig. 11

Comprehensive house thermal model using simscape physical components

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Fig. 13

Simulink physical converter with ideal temperature source

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Fig. 14

Aggregate and segregate heat flow from wall, windows, and roof

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Fig. 15

Total external heat flow and the thermal energy stored in walls, windows and roof

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Fig. 4

(a) Roof section, (b) walls section, and (c) windows section

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Fig. 3

Comprehensive house thermal model

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Fig. 2

Intermediate house thermal model

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Fig. 1

Simple house thermal model

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Fig. 7

Overall integrated ON/OFF cycle HVAC system with thermal house model

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Fig. 8

Cooler subsystem for ON/OFF cycle HVAC system

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Fig. 9

Simple house thermal model

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Fig. 12

In-house heat generation on 9th of May 2017

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Fig. 16

Superimposed measurement and simulation of the simple house thermal model

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Fig. 17

Superimposed measurement and simulation of the intermediate thermal house model

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Fig. 18

Superimposed measurement and simulation of the comprehensive thermal house model

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