0
Research Papers

Performance Prediction and Assessment of Energy Conservation Potential for a Light Pipe System in Indian Composite Climate of New Delhi

[+] Author and Article Information
K. N. Patil

SDM College of Engineering
and Technology Dharwad,
Karnataka 580002, India
e-mail: kalmeshnp@gmail.com

S. C. Kaushik

Centre for Energy Studies,
IIT Delhi,
Hawzkhas,
New Delhi 110016, India

S. N. Garg

Senior Scientific officer (Retd.)
Centre for Energy Studies,
IIT Delhi,
Hawzkhas,
New Delhi 110016, India

Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received April 26, 2017; final manuscript received February 12, 2018; published online June 18, 2018. Assoc. Editor: Jorge Gonzalez.

J. Sol. Energy Eng 140(5), 051012 (Jun 18, 2018) (9 pages) Paper No: SOL-17-1159; doi: 10.1115/1.4039656 History: Received April 26, 2017; Revised February 12, 2018

Light pipes are popularly used for transporting outdoor sunlight into deep spaces of the building, and hence, use of artificial lighting could be substantially reduced. Performance prediction of a light pipe is an essential step before its use in buildings, so that energy saving potential of the light pipe could be quantified. This paper deals with experimental validation of three existing semi-empirical models for light pipes with different aspect ratios, installed on a windowless test room, at IIT Delhi, New Delhi. Two new semi-empirical models based on the existing correlations are developed. The new model found to perform better with mean bias error (MBE) and root-mean-squared error (MSE) of 0.076 and 0.01, respectively. The better performing new model is used for the evaluation of hourly internal illuminance by the light pipe in a typical meteorological year (TMY) in New Delhi. From hourly internal illuminance in a typical meteorological year, the energy saving potential and CO2 mitigation potential of light pipe system for the test room are evaluated. Monthly average energy saving potentials of the light pipe-fluorescent tube light system are found to be 50% for continuous dimming control and 38% for three-step on–off control. Results show that the light pipe-fluorescent tube light system, with different lighting controls, could reduce CO2 emissions to 15–50%.

Copyright © 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Ministry of New and Renewable Energy, 2010, Green Rating for Integrated Habitat Assessment, GRIHA Manual, Government of India and The Energy and Resources Institute, New Delhi, India.
Shin, J. Y. , Yun, G. Y. , and Kim, J. T. , 2011, “ Evaluation of Daylighting Effectiveness and Energy Saving Potentials of Light-Pipe Systems in Buildings,” Indoor Built Environ., 21(1), pp. 129–136. [CrossRef]
Oakley, G. , Riffat, S. B. , and Shao, L. , 2000, “ Daylight Performance of Light Pipes,” Sol. Energy., 69(2), pp. 89–98. [CrossRef]
Mohelnikova, J. , 2008, “ Daylighting and Energy Savings With Tubular Light Guides,” WSEAS Trans. Environ. Develop., 4(3), pp. 200–209. https://www.researchgate.net/publication/237423037_Daylighting_and_Energy_Savings_with_Tubular_Light_Guides
Wu, Y. , 2008, “ Research and Development of Solar Light Pipes in China,” International Conference on Information Management. Innovation Management and Industrial Engineering, Taipei, Taiwan, Dec. 19–21, pp. 146–149.
Zastrow, A. , and Wittwer, V. , 1986, “ Daylighting With Mirror Light Pipes and With Fluorescent Planar Concentrators,” Proc. SPIE, 692, pp. 227–234.
Swift, P. D. , and Smith, G. B. , 1995, “ Cylindrical Mirror Light Pipes,” Sol. Energy Mater. Sol. Cells, 36(2), pp. 159–168. [CrossRef]
Carter, D. J. , 2002, “ The Measured and Predicted Performance of Passive Solar Light Pipe Systems,” Light Res. Technol., 34(1), pp. 39–52. [CrossRef]
Al-Marwaee, M. , and Carter, D. , 2006, “ Tubuler Guidance Systems for Daylight: Achieved and Predicted Installation Performances,” Appl. Energy., 83(7), pp. 774–788. [CrossRef]
Darula, S. , Kittler, R. , and Kocifaj, M. , 2010, “ Luminous Effectiveness of Tubular Light-Guides in Tropics,” Appl. Energy, 87(11), pp. 3460–3466. [CrossRef]
Taengchum, T. , Chirarattananon, S. , Exell, R. H. , and Chaiwiwatworakul, P. , 2014, “ Tracing of Daylight Through Circular Light Pipes With Anidolic Concentrators,” Sol. Energy, 110, pp. 818–829. [CrossRef]
Munaaim, M. A. C. , Al-Obaidi, K. M. , Ismail, M. R. , and Rahman, A. M. A. , 2014, “ Potential of Fiber Optic Day Lighting Systems in Tropical Malaysia,” Indoor Built Environ., 25(3), pp. 466–480. [CrossRef]
Al-Obaidi, K. M. , Ismail, M. , and Rahman, A. M. A. , 2014, “ Design and Performance of a Novel Innovative Roofing System for Tropical Landed Houses,” Energy Convers. Manage., 85, pp. 488–504. [CrossRef]
Jenkins, D. , and Muneer, T. , 2003, “ Modeling Light Pipe Performances—A Natural Solution,” Build. Environ., 38(7), pp. 965–972. [CrossRef]
Jenkins, D. , and Muneer, T. , 2004, “ Light Pipe Prediction Methods,” Appl. Energy, 79(1), pp. 77–86. [CrossRef]
Jenkins, D. , Zhang, X. , and Muneer, T. , 2005, “ Formulation of Semi Empirical Models for Predicting the Illuminance of Light Pipes,” Energy Convers. Manage., 46(13–14), pp. 2288–2300. [CrossRef]
Zhang, X. , and Muneer, T. , 2000, “ Mathematical Model for the Performance of Light Pipes,” Light Res. Technol., 32(3), p. 141. [CrossRef]
Zhang, X. , and Muneer, T. , 2002, “ A Design Guide for Performance Assessment of Solar Light Pipes,” Light Res. Technol., 34(2), pp. 149–169. [CrossRef]
Yun, G. Y. , Hwang, T. , and Kim Jeong, T. , 2010, “ Performance Prediction by Modeling of a Light-Pipe System Used Under the Climate Conditions of Korea,” Indoor Built Environ., 19(1), pp. 137–144. [CrossRef]
Duffie, J. A. , and Beckman, W. A. , 2006, Solar Engineering of Thermal Processes, Wiley, New York.
Koutsoyiannis, A. , 2003, Theory of Econometrics, 2nd ed., Palgrave, New York.
XLSTAT, 2014, “ XLSTAT Statistical Software Tool,” Addinsoft, CA, accessed Dec. 20, 2014, http://www.xlstat.com/en/download.html
Patil, K. N. , Garg, S. N. , and Kaushik, S. C. , 2013, “ Luminous Efficacy Model Validation and Computation of Solar Illuminance for Different Climates of India,” J. Renewable Sustainable Energy, 5(6), p. 063120. [CrossRef]
Ministry of Power and Indian Renewable Energy Development Agency. Govt of India, 2006, “ Bureau of Energy Efficiency Code, Lighting,” Bureau of Energy Efficiency, New Delhi, India.
Energy Design Resources, 2014, “ Sky Lighting Design Guidelines, Chapter 4, Day Lighting Controls,” Energy Design Resources, CA, accessed July 5, 2014, http://energydesignresources.com/media/19173822/skylighting-design-guidelines_final_2014-02-19.pdf
Government of India Ministry of Power Central Electricity Authority, 2014, “ CO2 Baseline Database for the Indian Power Sector, User Guide, Version 9.0,” Ministry of Power, Government of India, New Delhi, India, accessed Aug. 6, 2014, http://www.cea.nic.in/reports/planning/cdm _CO2/user_guide_ver9.pdf

Figures

Grahic Jump Location
Fig. 9

Predictive performance of Jenkins Muneer model

Grahic Jump Location
Fig. 10

Predictive performance of Shin et al. model

Grahic Jump Location
Fig. 8

Predictive performance of Zhang Muneer model

Grahic Jump Location
Fig. 7

Measurement points of internal illuminance on the floor of the test room

Grahic Jump Location
Fig. 6

Pyranometer and photo sensor to measure external irradiance and illuminance

Grahic Jump Location
Fig. 5

Light pipe specimen configuration

Grahic Jump Location
Fig. 3

Light pipe test room

Grahic Jump Location
Fig. 2

Dual diffuser: (a) outer diffuser plate and (b) inner diffuser plate

Grahic Jump Location
Fig. 1

Details of terms used in Jenkins and Muneer model

Grahic Jump Location
Fig. 11

Predictive performance of new model 1

Grahic Jump Location
Fig. 12

Predictive performance of a new model 2

Grahic Jump Location
Fig. 13

Distribution solar global illuminance at New Delhi station

Grahic Jump Location
Fig. 14

Cumulative frequency of internal illuminance under clear skies

Grahic Jump Location
Fig. 15

Cumulative frequency of internal illuminance under partly overcast sky

Grahic Jump Location
Fig. 16

Cumulative frequency of internal illuminance under overcast sky

Grahic Jump Location
Fig. 17

Monthly CO2 emissions of the light pipe-fluorescent lamp system for four lighting controls for test room

Grahic Jump Location
Fig. 18

Monthly energy conservation potential of the light pipe-fluorescent lamp system for four lighting controls for test room

Tables

Errata

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In