A large amount of the operating costs in a building is determined by the energy requirements of its air conditioning system. The demand for more energy efficient units desired by both manufacturers and the consumers results in a dire necessity to have air conditioning units that are more energy efficient than the existing ones. In order to achieve the abovementioned features, a tool must be designed to simulate the thermal behavior of the air conditioners. In this work, a mathematical model is developed for air conditioning units and coded into a computer program to estimate the overall performance, as indicated by the unit energy efficiency ratio (EER). The main objective is to maximize the unit EER by proposing modifications or enhancements in the existing unit and to study the economics of these modifications based on the measured terms such as the energy savings and the operating cost. Finally, the effect of the proposed design modifications on the economy and environment at the national level in Saudi Arabia is estimated and presented as an example.
Issue Section:
Energy Conversion/Systems
References
1.
Sieminski
, A.
, 2014
, “International Energy Outlook. Energy Information Administration (EIA)
,” Deloitte Oil and Gas Conference
, Houston, TX, Nov. 18.https://www2.deloitte.com/content/dam/Deloitte/us/Documents/energy-resources/us-er-a-retrospective-look-at-the-2014-deloitte-oil-and-gas-conference-02252015.pdf2.
Al-Awajji
, S. H.
, and Alshiha
, Z. M.
, 2014
, “Saudi Electric Company Annual Report
,” SEC, Riyadh, Saudi Arabia, accessed Apr. 10, 2017, https://www.se.com.sa/en-us/Pages/AnnualReports.aspx3.
Sanaye
, S.
, and Malekmohammadi
, H.
, 2004
, “Thermal and Economical Optimization of Air Conditioning Units With Vapor Compression Refrigeration System
,” Appl. Therm. Eng.
, 24
(13
), pp. 1807
–1825
.4.
Zhang
, G. Q.
, Wang
, L.
, Liu
, L.
, and Wang
, Z.
, 2004
, “Thermoeconomic Optimization of Small Size Central Air Conditioner
,” Appl. Therm. Eng.
, 24
(4
), pp. 471
–485
.5.
Al-Otaibi
, D.
, Dincer
, I.
, and Kalyon
, M.
, 2004
, “Thermoeconomic Optimization of Vapor-Compression Refrigeration Systems
,” Int. Commun. Heat Mass Transfer
, 31
(1
), pp. 95
–107
.6.
Ding
, G.-L.
, 2007
, “Recent Developments in Simulation Techniques for Vapour-Compression Refrigeration Systems
,” Int. J. Refrig.
, 30
(7
), pp. 1119
–1133
.7.
Morrison
, G. L.
, 2004
, “Air Conditioner Performance Rating
,” Asia Pacific Economic Co-Operation Conference
, Air Conditioning: The Next 5 Years (APEC
), Santiago, Chile, Nov. 20–21.https://www.researchgate.net/publication/237454634_AIR_CONDITIONER_PERFORMANCE_RATING8.
Duprez
, M.-E.
, Dumont
, E.
, and Frère
, M.
, 2007
, “Modelling of Reciprocating and Scroll Compressors
,” Int. J. Refrig.
, 30
(5
), pp. 873
–886
.9.
Chen
, Y.
, Halm
, N. P.
, Groll
, E. A.
, and Braun
, J. E.
, 2002
, “Mathematical Modeling of Scroll Compressors—Part I: Compression Process Modeling
,” Int. J. Refrig.
, 25
(6
), pp. 731
–750
.10.
ANSI/AHRI
, 2004
, “Performance Rating of Positive Displacement Refrigerant Compressors and Compressor Units
,” Air-Conditioning, Heating, and Refrigeration Institute, Arlington, VA, Standard No. 540-2015
http://www.ahrinet.org/App_Content/ahri/files/STANDARDS/AHRI/AHRI_Standard_540_I-P_and_SI_2015.pdf.11.
Byun
, J.-S.
, Lee
, J.
, and Choi
, J.-Y.
, 2007
, “Numerical Analysis of Evaporation Performance in a Finned-Tube Heat Exchanger
,” Int. J. Refrig.
, 30
(5
), pp. 812
–820
.12.
Domanski
, P. A.
, 1989
, “EVSIM: An Evaporator Simulation Model Accounting for Refrigerant and One Dimensional Air Distribution
,” National Institute of Standards and Technology, Washington, DC, Report No. 89-4133
.https://www.nist.gov/publications/evsim-evaporator-simulation-model-accounting-refrigerant-and-one-dimensional-air13.
Wang
, C.-C.
, and Chi
, K.-Y.
, 2000
, “Heat Transfer and Friction Characteristics of Plain Fin-and-Tube Heat Exchangers—Part I: New Experimental Data
,” Int. J. Heat Mass Transfer
, 43
(15
), pp. 2681
–2691
.14.
Wang
, C.-C.
, Chi
, K.-Y.
, and Chang
, C.-J.
, 2000
, “Heat Transfer and Friction Characteristics of Plain Fin-and-Tube Heat Exchangers—Part II: Correlation
,” Int. J. Heat Mass Transfer
, 43
(15
), pp. 2693
–2700
.15.
Wang
, C.-C.
, Jang
, J.-Y.
, and Chiou
, N.-F.
, 1999
, “A Heat Transfer and Friction Correlation for Wavy Fin and Tube Heat Exchangers
,” Int. J. Heat Mass Transfer
, 42
(10
), pp. 1919
–1924
.16.
Wang
, C.-C.
, Lee
, C. J.
, Chang
, C. T.
, and Lin
, S. P.
, 1999
, “Heat Transfer and Friction Correlation for Compact Louvered Fin-and-Tube Heat Exchangers
,” Int. J. Heat Mass Transfer
, 42
(11
), pp. 1945
–1956
.17.
Wang
, C.-C.
, Tao
, W.-H.
, and Chang
, C.-J.
, 1999
, “An Investigation of the Airside Performance of the Slit Fin-and-Tube Heat Exchangers
,” Int. J. Refrig.
, 22
(8
), pp. 595
–603
.18.
Yang
, L.
, and Wang
, W.
, 2008
, “A Generalized Correlation for the Characteristics of Adiabatic Capillary Tubes
,” Int. J. Refrig.
, 31
(2
), pp. 197
–203
.19.
Choi
, J.
, Kim
, Y.
, and Kim
, H. Y.
, 2003
, “A Generalized Correlation for Refrigerant Mass Flowrate Through Adiabatic Capillary Tubes
,” Int. J. Refrig.
, 26
(8
), pp. 881
–888
.20.
Zhang
, C.
, Ma
, S.
, Chen
, J.
, and Chen
, Z.
, 2006
, “Experimental Analysis of R22 and R407c Flow Through Electronic Expansion Valve
,” Energy Convers. Manage.
, 47
(5
), pp. 529
–544
.21.
Park
, C.
, Cho
, H.
, Lee
, Y.
, and Kim
, Y.
, 2007
, “Mass Flow Characteristics and Empirical Modeling of R22 and R410A Flowing Through Electronic Expansion Valves
,” Int. J. Refrig.
, 30
(8
), pp. 1401
–1407
.22.
Vakiloroaya
, V.
, Samali
, B.
, Fakhar
, A.
, and Pishghadam
, K.
, 2014
, “Thermo-Economic Optimization of Rooftop Unit's Evaporator Coil for Energy Efficiency and Thermal Comfort
,” Build. Simul.
, 7
(4
), pp. 345
–359
.23.
Mogaji
, T.
, 2015
, “Simulation and Comparison of the Performance of Refrigerant Fluids in Single Stage Vapour Compression Refrigeration System
,” Br. J. Appl. Sci. Technol.
, 8
(6
), pp. 583
–594
.24.
Moran
, M. J.
, and Shapiro
, H. N.
, 1992
, Fundamental of Engineering Thermodynamics
, 2nd ed., Wiley
, New York
.25.
Shapiro
, H.
, 1995
, “Semi-Empirical Method for Modeling a Reciprocating Compressor in Refrigeration Systems
,” ASHRAE Trans.
, 101
(2), pp. 367–382.26.
Stoecker
, W.
, 1971
, Proposed Procedures for Simulating the Performance of Components and Systems for Energy Calculations
, 2nd ed., ASHRAE
, Atlanta, GA
.27.
Incropera
, F. P.
, and DeWitt
, D. P.
, 1996
, Introduction to Heat Transfer
, Wiley
, New York
.28.
Chaddock
, J. B.
, and Noerager
, J. A.
, 1966
, “Evaporation of R-12 in a Horizontal Tube With Constant Wall Heat Flux
,” ASHRAE Trans.
, 72
, pp. 99–103.29.
Bourdouxhe
, J. P. H.
, Grodent
, M.
, and Lebrun
, J. J.
, 1995
, “A Toolkit for Primary HVAC System Energy Calculation [Computer Program]
,” American Society of Heating, Refrigerating and Air-Conditioning Engineers, Atlanta, GA.30.
Reichler
, M.
, 1999
, “Modeling of Rooftop Packaged Air Conditioning Equipment
,” Masters thesis
, University of Wisconsin-Madison, Madison, WI.https://minds.wisconsin.edu/bitstream/handle/1793/7672/Thesis.pdf?sequence=131.
Braun
, J.
, Klein
, S.
, and Mitchell
, J.
, 1989
, “Effectiveness Models for Cooling Towers and Cooling Coils
,” ASHRAE Trans.
, 95
(2
), pp. 164
–174
.32.
Traviss
, D.
, Rohsenow
, W.
, and Baron
, A.
, 1973
, “Forced-Convection Condensation Inside Tubes: A Heat Transfer Equation for Condenser Design
,” ASHRAE Trans
, 79
(1
), pp. 157
–165
.33.
Crane
, 1988
, Flow of Fluids Thorough Valves, Fittings, and Pipe
, Crane Company, Stamford, CT.34.
Geary
, D. F.
, 1975
, “Return Bend Pressure Drop in Refrigeration Systems
,” ASHRAE Trans.
, 81
(1
), pp. 250
–264
.35.
ASHRAE Handbook
, 1997
, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
, Atlanta, GA
.36.
Buckingham
, E.
, 1914
, “On Physically Similar Systems; Illustrations of the Use of Dimensional Equations
,” Phys. Rev.
, 4
(4
), p. 345
.37.
Kuehl
, S.
, and Goldschmidt
, V.
, 1990
, “Steady Flows of R-22 Through Capillary Tubes, Test Data
,” Winter Meeting, American Society of Heating
, Refrigerating and Air-Conditioning Engineers, Atlanta, GA, Feb. 10–14, pp. 719
–728
.38.
Ministry of Economy and Planning, Central Department of Statistics and Information
, 2004
, “Detailed Results Population and Housing Census 1425 H
,” Ministry of Economy and Planning, Riyadh, Saudi Arabia.39.
Ministry of Economy and Planning, Central Department of Statistics and Information
, 2010
, “Detailed Results Population and Housing Census 1435 H
,” Ministry of Economy and Planning, Riyadh, Saudi Arabia.40.
Mokheimer
, E. M.
, 2012
, “On the Need for Energy Labeling for Villa Air Conditioners in Saudi Arabia and Its Economic and Environmental Impact
,” Energy Environ.
, 23
(1
), pp. 51
–73
.41.
ENS
, 2017, “Coal Equivalent
,” European Nuclear Society, Brussels, Belgium, accessed June 1, 2017, https://www.euronuclear.org/info/encyclopedia/coalequivalent.htm42.
WNA
, 2016
, “Heat Values of Various Fuels
,” World Nuclear Association, London, accessed June 1, 2017, http://www.world-nuclear.org/information-library/facts-and-figures/heat-values-of-various-fuels.aspx43.
Hong
, B. D.
, and Slatick
, E. R.
, 1994
, “Carbon Dioxide Emission Factors for Coal
,” Energy Information Administration, Washington, DC, accessed June 1, 2017, https://www.eia.gov44.
Mokheimer
, E. M. A.
, and Eid
, A.
, 2011
, “Determinants of Consumers' Demand on Energy-Efficient Air Conditioners in Saudi Arabia
,” Energy Environ.
, 22
(6
), pp. 711
–722
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