Computational fluid dynamics (CFD) modelling of air flow field, mean age of air and CO2 distributions inside a bedroom with different heights of conditioned air supply outlet

Applied Energy

Volumn 164, Issue , 2016, Pages 906-915

  Ning, Mao ^a,b   Mengjie, Song ^b,c   Mingyin, Chan ^b   Dongmei, Pan ^d   Shiming, Deng ^b  

^a CHINA UNIVERSITY OF PETROLEUM   (China)

^b HONG KONG POLYTECHNIC UNIVERSITY   (Hong Kong)

^c GUANGDONG UNIVERSITY OF TECHNOLOGY   (China)

^d SOUTH CHINA UNIVERSITY OF TECHNOLOGY   (China)

Author keywords

Air change efficiency; CFD method; CO2 concentration; Height of supply air outlet; Mean age of air; Sleeping environments

Indexed keywords

AIR CONDITIONING; CARBON DIOXIDE; COMPUTATIONAL FLUID DYNAMICS; FLOW FIELDS;

AIR CHANGES; CFD METHOD; HEIGHT OF SUPPLY AIR OUTLET; MEAN AGE OF AIR; SLEEPING ENVIRONMENTS;

AIR;

AIR CONDITIONING; AIRFLOW; CARBON DIOXIDE; COMPUTATIONAL FLUID DYNAMICS; CONCENTRATION (COMPOSITION); FLOW FIELD; VENTILATION;

EID: 84954386760     PISSN: 03062619     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.apenergy.2015.10.096     Document Type: Article

References (26)

1. Hedemark L.L., Kronenberg R.S. Ventilatory and heart rate responses to hypoxia and hypercapnia during sleep in adults. J Appl Physiol 1982, 53:307-312.
2. Zhou JQ. Numerical investigation of indoor CO2 concentration distribution in an apartment. In: SHB 2010-3rd International symposium on sustainable healthy buildings; Seoul, Korea; 27 May 2010.
3. Liu D., Zhao F.Y., Wang H.Q., Rank E. Turbulent transport of airborne pollutants in a residential room with a novel air conditioning unit. Int J Refrig 2012, 35:1455-1472.
4. Screbric J., Vukovic V., He G.Q., Yang X.D. CFD boundary conditions for contaminant dispersion heat transfer and airflow simulations around human occupants in indoor environments. Build Environ 2008, 43:294-303.
5. Lau J., Chen Q.Y. Floor-supply displacement ventilation for workshops. Build Environ 2007, 42:1718-1730.
6. Noh K.C., Jang J.S., Oh M.D. Thermal comfort and indoor air quality in the lecture room with 4-way cassette air-conditioner and mixing ventilation system. Build Environ 2007, 42:689-698.
7. Pan D.M., Chan M.Y., Deng S.M., Xia L., Xu X. Numerical studies on the microclimate around a sleeping person and the related thermal neutrality issues. Ergonomics 2011, 54:1088-1100.
8. Mao N., Pan D.M., Deng S.M., Chan M.Y. Thermal, ventilation and energy saving performance evaluations of a ductless bed-based task/ambient air conditioning (TAC) system. Energy Build 2013, 66:297-305.
9. Mao N., Pan D.M., Chan M.Y., Deng S.M. Performance evaluation of an air conditioning system with different heights of supply outlet applied to a sleeping environment. Energy Build 2014, 77:281-291.
10. ANSYS FLUENT User's Guide. Southpointe: ANSYS, Inc.; 2010.
11. Menter F.R. Two-equation eddy-viscosity turbulence models for engineering applications. AIAA J 1994, 32:1598-1605.
12. Hu C., Kurabuchi T., Ohba M. Numerical study of cross-ventilation using two-equation rans turbulent models. Int J Vent 2005, 4:123-132.
13. Stamou A., Katsiris I. Verification of a CFD model for indoor airflow and heat transfer. Build Environ 2006, 41:1171-1181.
14. Raithby G.D., Chui E.H. A finite-volume method for predicting a radiant heat transfer in enclosures with participating media. J Heat Transfer 1990, 112:415-423.
15. Chanteloup V., Mirade P.S. Computational fluid dynamics (CFD) modelling of local mean age of air distribution in forced-ventilation food plants. J Food Eng 2009, 90-103.
16. Gan G. Effective depth of fresh air distribution in rooms with single-sided natural ventilation. Energy Build 2000, 31:65-73.
17. Bartak M., Beausoleil-Morrison I., Clarke J.A., Denev J., Drkal F., Lain M., et al. Integrating CFD and building simulation. Build Environ 2002, 37:865-871.
18. Hu S.C., Chuah Y.K. Deterministic simulation and assessment of air recirculation performance of unidirectional-flow clean rooms that incorporate age of air concept. Build Environ 2003, 38:563-570.
19. Zhai Z., Zhang Z., Zhang W., Chen Q. Evaluation of various turbulence models in predicting airflow and turbulence in enclosed environments by CFD: Part-1: summary of prevalent turbulence models. HVAC&R Res 2007, 13:853-870.
20. Chen Q., Srebric J. A procedure for verification, validation and reporting of indoor environment CFD analyses. HVAC&R Res 2002, 8:201-216.
21. Sørensen D.N. Radiation between segments of the seated human body. ROOMVENT 2002, 1:317-320.
22. Kobayashi N., Chen Q. Floor-supply displacement ventilation in a small office. Indoor Built Environ 2003, 12:281-292.
23. Srebric J., Chen Q. Simplified numerical models for complex air supply diffusers. HVAC&R Res 2002, 8:277-294.
24. Mundt E., Mathisen H.M., Nielsen P.V., Moser A. Ventilation effectiveness 2004, Rehva, Forssa.
25. Etheridge D., Sandberg M. Building ventilation theory measurements 1996, John Wiley & Sons, Baffins Lane.
26. ANSI/ASHRAE 129-1997 (RA 2002), Measuring air change effectiveness. Atlanta: ASHRAE; 2002.