Infrastructure Engineering - Research Publications

Permanent URI for this collection

http://hdl.handle.net/11343/347

Filters

2013 7
Reset filters

Settings
Statistics
Citations
Start date: 2013 × End date: 2013 × Author: Aye, Lu ×

Search Results

Now showing 1 - 7 of 7
  • Item
    No Preview Available
    Solar chilled drinking water sourced from thin air: Modelling and simulation of a solar powered atmospheric water generator
    Aye, L ; George, BA ; Wu, D ; Piantadosi, J ; Anderssen, RS ; Boland, J (Modelling and Simulation Society of Australia and New Zealand, 2013-12-01)
    It is expected that there will be water scarcity in the future under the changing climate. Therefore investigations of innovative and environmentally friendly ways to produce portable water are very much essential. Atmospheric water generators (AWGs) apply vapour compression refrigeration to extract water vapour from the surrounding air. They produce drinking quality water and they require moist air and electricity. The required electricity may be produced by solar photovoltaic (PV) panels. By using solar energy the environmental impacts of an AWG associated with electricity consumption could be substantially reduced. The availability of solar energy and high humidity of air coincide with the drinking water demand. As of today the performance characteristics of stand-alone solar PV powered AWG is unknown. To address this knowledge gap a simulation model of such system has been developed. The model focuses on an individual phenomenon such as solar radiation availability, solar PV electricity output, battery storage, moisture content in the air and heat and mass transfer at the vapour compression refrigeration. The aim of this paper is to present the transient model developed and the simulation results. Kasaragod district in the state of Kerala, India is selected as the study area. Drinking water availability is a major issue in this district during the months from February to early June. Daily climate variables like temperature, maximum and minimum relative humidity, wind speed and global solar radiation on horizontal plane and wind speed were obtained from a meteorological station located in Kasaragod. A simulation model has been developed in TRNSYS with the following components: PV modules, Batteries, Regulator, Inverter and Atmospheric Water Generator. By using the model developed the capacity of the AWG, the number PV modules, the capacity of the battery bank required were determined for minimum daily water production of 15 L. The water extraction efficiency of the AWG investigated varies between 5.4% and 9.3% for Kasaragod. The cooling CCOPs of the AWG investigated are between 4 and 5, which is better than conventional air-to-air heat pump. Based on the analysis it was concluded that the monthly average daily efficiency is strongly correlated to the monthly average relative humidity of the ambient air. The monthly average daily efficiency is defined as average of all the daily average efficiency for a month. The validation of the simulation model with experiments to enable practical system design optimisations, and the development of control algorithms to obtain better performance by using the validated model are recommended for the future studies.
  • Item
    No Preview Available
    INVESTIGATING POTENTIAL COMFORT BENEFITS OF BIOLOGICALLY-INSPIRED BUILDING SKINS
    Webb, M ; Aye, L ; Green, R ; Wurtz, E (INT BUILDING PERFORMANCE SIMULATION ASSOC-IBPSA, 2013)
  • Item
    Thumbnail Image
    A Scenario Analysis Approach to Distributed Energy System Optimisation
    Christopher, PB ; Aye, L ; Ngo, T ; Mendis, P ; Piantadosi, J ; Anderssen, RS ; Boland, J (MODELLING & SIMULATION SOC AUSTRALIA & NEW ZEALAND INC, 2013)
  • Item
    No Preview Available
    Water-Energy-GHG emissions accounting for urban water supply: A case study on an urban redevelopment in Melbourne
    Arora, M ; Aye, L ; Malano, HM ; Ngo, TD (E.W. Publications, 2013-07-01)
    This paper presents a conceptual accounting framework to quantify the life cycle energy use and GHG emissions of alternative urban water supply strategies. The framework enables the comparative analysis of alternative strategies to design a fit-for-purpose water supply system that takes into account water supply, energy use and GHG emissions and has been tested on the Fisherman’s Bend development site in Melbourne Metropolitan region and results are presented. This study does not include the environmental and social benefits incurred from deploying multiple water sources, which must be considered before making strategic decision about implementation of alternative sources of water supply.
  • Item
    No Preview Available
    A field test to demonstrate the benefit of cool roof paints in a temperate climate
    JENSEN, C ; Hes, D ; Aye, L ; Schnabel, MA (The Architectural Science Association, 2013)
    This volume contains the refereed papers of the 47th International Architectural Science Association Conference 2013, held at the School of Architecture, The Chinese University of Hong Kong, China, They provide a snapshot of current cutting ...
  • Item
    Thumbnail Image
    Financial analysis of solar cooling systems in Australia
    Wu, D ; Aye, L ; Mendis, PA ; Ngo, TD (The University of Melbourne, 2013)
  • Item
    Thumbnail Image
    Heat Recovery from Sewers
    Aye, L (Taylor & Francis Ltd, 2013)