Ventilation effectiveness and contaminant distribution in an occupied space conditioned with low exergy ventilation technologies in the tropics

Conference paper

Mahmoudi Saber, E., Mast, M, Tham, KW and Leibundgut, H (2015). Ventilation effectiveness and contaminant distribution in an occupied space conditioned with low exergy ventilation technologies in the tropics. Healthy Buildings 2015 Europe. Eindhoven, Netherlands 18 - 20 May 2015 London South Bank University.
AuthorsMahmoudi Saber, E., Mast, M, Tham, KW and Leibundgut, H
TypeConference paper
Abstract

Low exergy concept can be implemented in air conditioning system of the tropical buildings through a reduction of the difference between operational temperature of cooling system and indoor space whilst meeting thermal comfort requirements. Decentralized dedicated outdoor air system (DDOAS) coupled with radiant cooling system (RCS) are low exergy designs which can potentially reduce exergy destruction in cooling system of buildings while providing adequate air quality for occupants. In this study, ventilation effectiveness of a DDOAS-RCS design with floor supply – ceiling exhaust (FS-CE) and radiant ceiling panel has been investigated in an experimental setup located in Singapore. Air change efficiency (ACE) and contaminant removal effectiveness (CRE) of the designed system have been determined using tracer gas step down test under various ventilation rates. The results showed that ACE of DDOAS-RCS design with FS-CE distribution is close to that of mixing strategy and there is no significant difference for five considered ventilation rates in the range of 0.44-0.92 lit/s/m2. It was also found that each change in occupancy for the space with 70 m3 volume at ventilation rate of 0.62 lit/s/m2 takes about two hours to reach a steady state CO2 concentration and this change happens gradually throughout the space.

Year2015
PublisherLondon South Bank University
Accepted author manuscript
License
File Access Level
Open
Publication dates
Print18 May 2015
Publication process dates
Deposited06 Dec 2017
Accepted18 May 2015
Permalink -

https://openresearch.lsbu.ac.uk/item/876v7

Download files

Accepted author manuscript
Saber et al. 2015.pdf
License: CC BY 4.0
File access level: Open

  • 138
    total views
  • 101
    total downloads
  • 2
    views this month
  • 0
    downloads this month

Export as

Related outputs

Review of Intelligent Control Systems for Natural Ventilation as Passive Cooling Strategy for UK Buildings and Similar Climatic Conditions
Mahmoudi Saber, E., Chaer, I., Gillich, A. and Ekpeti, B. (2021). Review of Intelligent Control Systems for Natural Ventilation as Passive Cooling Strategy for UK Buildings and Similar Climatic Conditions. Energies. 14 (15), p. e4388. https://doi.org/10.3390/en14154388
Reducing carbon footprint and cooling demandin arid climates using an integrated hybrid ventilation and photovoltaic approach
Mahmoudi, S. E. and Elnabaw, M. H. (2021). Reducing carbon footprint and cooling demandin arid climates using an integrated hybrid ventilation and photovoltaic approach. Environment, Development and Sustainability. https://doi.org/10.1007/s10668-021-01571-1
Performance prediction and evaluation on the first balanced energy networks (BEN) part I: BEN and building internal factors
Wang, Y, Gillich, A, Liu, D, Mahmoudi Saber, E., Yebiyo, M, Kang, R, Ford, A and Hewitt, M (2021). Performance prediction and evaluation on the first balanced energy networks (BEN) part I: BEN and building internal factors. Energy. 221, pp. 119797-119797. https://doi.org/10.1016/j.energy.2021.119797
Model predictive control of non-domestic heating using genetic programming dynamic models
Mahmoudi Saber, E. (2020). Model predictive control of non-domestic heating using genetic programming dynamic models. Applied Soft Computing . 97 (B), pp. 106695-106695. https://doi.org/10.1016/j.asoc.2020.106695
GPML: an XML-based standard for the interchange of genetic programming trees
Esmail Saber (2019). GPML: an XML-based standard for the interchange of genetic programming trees. Genetic Programming and Evolvable Machines . 11. https://doi.org/10.1007/s10710-019-09370-4
Limits and uncertainty for energy efficiency in the UK housing stock
Gillich, A., Mahmoudi Saber, E. and Mohareb, E. (2019). Limits and uncertainty for energy efficiency in the UK housing stock. Energy Policy. 133. https://doi.org/10.1016/j.enpol.2019.110889
Performance evaluation of damper control settings for operation of multiple-zone variable air volume reheat system in different building applications and climate types
Mahmoudi Saber, E. (2017). Performance evaluation of damper control settings for operation of multiple-zone variable air volume reheat system in different building applications and climate types. Building Simulation. 10 (5), pp. 687-696. https://doi.org/10.1007/s12273-017-0353-4
Adaptable cooling coil performance during part loads in the tropics - A computational evaluation
Sekhar, C, Anand, P, Schiavon, S, Tham, KW, Cheong, D and Mahmoudi Saber, E. (2017). Adaptable cooling coil performance during part loads in the tropics - A computational evaluation. Energy and Buildings. 159, pp. 148-163. https://doi.org/10.1016/j.enbuild.2017.10.086
A review of high temperature cooling systems in tropical buildings
Mahmoudi Saber, E., Tham, KW and Leibundgut, H (2016). A review of high temperature cooling systems in tropical buildings. Building and Environment. 96, pp. 237-249. https://doi.org/10.1016/j.buildenv.2015.11.029
Performance evaluation of low exergy systems depicting decentralized dedicated outdoor air system coupled with radiant cooling in the tropics
Mahmoudi Saber, E. (2016). Performance evaluation of low exergy systems depicting decentralized dedicated outdoor air system coupled with radiant cooling in the tropics. PhD Thesis National University of Singapore Department of Building
HARNESSING DAYLIGHTING AND SOLAR GAINS AS SUSTAINABLE ARCHITECTURAL DESIGNMETHODSIN MIXED-USE DEVELOPMENTS IN LAGOS, NIGERIA.
Mahmoudi Saber, E., Chaer, I. and Ekpeti, B. (2015). HARNESSING DAYLIGHTING AND SOLAR GAINS AS SUSTAINABLE ARCHITECTURAL DESIGNMETHODSIN MIXED-USE DEVELOPMENTS IN LAGOS, NIGERIA. CIBSE Technical Symposium. London 16 - 17 Apr 2015 CIBSE.
PV (photovoltaics) performance evaluation and simulation-based energy yield prediction for tropical buildings
Mahmoudi Saber, E., Lee, SE, Manthapuri, S, Yi, W and Deb, C (2014). PV (photovoltaics) performance evaluation and simulation-based energy yield prediction for tropical buildings. Energy. 71, pp. 588-595. https://doi.org/10.1016/j.energy.2014.04.115
Numerical Modelling of an Indoor Space Conditioned with Low Exergy Cooling Technologies in the Tropics
Mahmoudi Saber, E., Mast, M, Tham, KW and Leibundgut, H (2014). Numerical Modelling of an Indoor Space Conditioned with Low Exergy Cooling Technologies in the Tropics. 13th International Conference on Indoor Air Quality and Climate. Hong Kong 07 - 12 Jul 2014 London South Bank University.
Thermal comfort and IAQ analysis of a decentralized DOAS system coupled with radiant cooling for the tropics
Mahmoudi Saber, E., Iyengar, R, Mast, M, Meggers, F, Tham, KW and Leibundgut, H (2014). Thermal comfort and IAQ analysis of a decentralized DOAS system coupled with radiant cooling for the tropics. Building and Environment. 82, pp. 361-370. https://doi.org/10.1016/j.buildenv.2014.09.001
Stuck in a stack—Temperature measurements of the microclimate around split type condensing units in a high rise building in Singapore
Bruelisauer, M, Meggers, F, Mahmoudi Saber, E., Li, C and Leibundgut, H (2013). Stuck in a stack—Temperature measurements of the microclimate around split type condensing units in a high rise building in Singapore. Energy and Buildings. 71, pp. 28-37. https://doi.org/10.1016/j.enbuild.2013.11.056