Numerical Modelling of an Indoor Space Conditioned with Low Exergy Cooling Technologies in the Tropics

Conference paper


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.
AuthorsMahmoudi Saber, E., Mast, M, Tham, KW and Leibundgut, H
TypeConference paper
Abstract

The basic principle of low exergy building systems is the minimization of excess temperature gradients across building systems so that the quality of the energy supplied to the building better matches with the actual demand of the building. Several low exergy technologies which were developed at ETH, Switzerland were implemented in a small research laboratory (BubbleZERO) in Singapore to evaluate the performance of these systems for the tropics. In this paper, the indoor space conditioned by these technologies is analysed by computational fluid dynamics (CFD). Different sources of heat, water vapour and carbon dioxide have been modelled with suitable boundary conditions and emission sources., The CFD results have been verified with different numerical settings and the impact of different turbulence models and mesh densities on the accuracy of the CFD results has been studied. The results have shown that SST k-ω and Reynolds Stress turbulence models have close predictions while the standard k-ε model underestimate the temperature values. In addition, indoor air quality concerns like cold feet or excessive temperature difference for occupants in the space are investigated by checking the thermal stratification in the space.

Year2014
PublisherLondon South Bank University
Accepted author manuscript
License
CC BY 4.0
File Access Level
Open
Publication dates
Print07 Jul 2014
Publication process dates
Deposited06 Dec 2017
Accepted04 Mar 2014
Permalink -

https://openresearch.lsbu.ac.uk/item/877zv

  • 0
    total views
  • 4
    total downloads
  • 0
    views this month
  • 1
    downloads this month

Related outputs

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