Sustainable technologies to improve indoor air quality in a residential house – A case study in Waikato, New Zealand

AL-Rawi, Mohammad; Ikutegbe, Charles A.; Auckaili, Amar

doi:10.1016/j.enbuild.2021.111283

Cited by 12 publications

(20 citation statements)

References 24 publications

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“…One of the components of a healthy living space is effective climate control. In New Zealand, units are available to perform different tasks as shown in Table 1 [1] : heat, cool, dehumidify and purify, but they often involve a significant upfront cost to buy, especially those that do more than one task, and have high running costs. Moreover, systems that perform air purification are generally designed to remove only heavy particles from the air (such as dust).…”

Section: Hardware In Contextmentioning

confidence: 99%

“…This is because good insulation, air conditioning units, heaters and dehumidifiers are all expensive to purchase, as is the cost of operating. Housing provided by the New Zealand government also frequently suffer from poor IAQ, exacerbated by the fact that residents are unable to afford to heat them [1] .…”

Section: Hardware In Contextmentioning

confidence: 99%

“…Recently, several studies [1] , [7] , [8] , [9] , [10] examined experimentally and mathematically the use of Ultraviolet germicidal irradiation (UVGI) lights embedded within indoor climate control devices for the purpose of reducing the transmission of airborne infections. For example, [7] embedded UVGI in a building’s HVAC system and measured the resultant air quality.…”

Section: Hardware In Contextmentioning

confidence: 99%

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Prototyping a low-cost residential air quality device using ultraviolet germicidal irradiation (UVGI) light

AL-Rawi

Lazonby

Smith³

2022

HardwareX

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Many New Zealand residential dwellings suffer from dampness and fungi during the winter, which can cause respiratory health problems. This can be due to poor insulation and ventilation, and the situation worsens when residents cannot afford to heat the dwelling. The main aim of this paper is to modify an existing dehumidifier so that it can remove moisture, heat the living space and reduce fungi growth and bacteria. To achieve that, we installed ultraviolet germicidal lights (UVGI) in an existing dehumidifier with a total cost of USD $150.7 (NZD $213.76). The UVGI lights are known to be efficient in destroying the DNA of fungi and bacteria. The results show that the device reduced the fungi growth and did increase the room temperature because the dehumidifier captured two litres of water over 24 h of testing. The proposed device did achieve a reduction in particulate matters, from 0.9 lg=m 3 to 0.14 lg=m 3 and an acceptable range of relative humidity below 50%, which reduces the favourable conditions for fungi growth. Therefore, our proposed low-cost device does improve the indoor air quality (IAQ) in the living space.

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Section: Hardware In Contextmentioning

confidence: 99%

Section: Hardware In Contextmentioning

confidence: 99%

Section: Hardware In Contextmentioning

confidence: 99%

See 1 more Smart Citation

Prototyping a low-cost residential air quality device using ultraviolet germicidal irradiation (UVGI) light

AL-Rawi

Lazonby

Smith³

2022

HardwareX

Self Cite

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“…Technical analysis of the global energy consumption highlighted the excessive consumption of energy in the building sector [ 3 ], of which significant improvements could be made to the HVAC operations [ 4 ]. Through the process of conducting many research projects, as published in “ Thermal Energy Storage with Phase Change Materials ” [ 5 ], the authors examined the factors affecting the buildings of lightweight materials and diagnosed the important role played by the thermal mass of the building [ 6 , 7 ] and the lack of thermal mass present in lightweight building materials [ 8 ]. The authors of the same book [ 5 ] also answered the core question of how the thermal mass of new and existing buildings, particularly those made from lightweight materials, can be increased.…”

Section: Introductionmentioning

confidence: 99%

Combination of Passive and Active Solar Heating with Thermal Energy Storage

Thangam

Auckaili

2022

Molecules

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This study investigated the impact of individual and combination of different sources of heating (passive solar heating, electric oil-heater, and solar air heater) in a pilot-scale building containing phase change material (PCM) for a potential reduction in energy consumption while maintaining thermal comfort. Unlike most of the recent simulations and modelling studies, this impact was tested experimentally using two identical control and test huts located at the University of Auckland. The control hut was equipped with standard gypsum boards while the test hut had gypsum boards containing PCM (PureTemp 20, PT20). The study found that combining both active and passive solar heating with a temperature-controlled electric oil heater demonstrated the ability to provide significant energy savings and maintain thermal comfort in the test hut, most notably overnight. The suggested combination was tested over different weather conditions and with different temperature constraints to maintain thermal comfort and achieve energy savings ranging from 33% to 87.5%.

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“…The increasing amount of time spent indoors is a growing concern in modern society. As the time of exposure to indoor pollutants is much longer than that of outdoor pollutants, indoor air quality plays an essential role in ensuring public health [ 1 , 2 ]. Moreover, the quality of the indoor environment affects the comfort and productivity of the occupants [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Modelling Analysis of a Membrane-Based Fresh Air Processing System

Englart

Rajski

2022

Membranes

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The current standard of residential buildings is based on well-insulated and airtight construction as an effective way to reduce primary energy consumption. On the other hand, this intensifies the issue of the indoor air quality. In this paper, the applicability of a hybrid dehumidification/evaporative cooling system for the processing and supply of fresh air is evaluated. The proposed novel system employs cross-flow hollow-fiber membrane modules. To provide a better insight into this novel approach, the system’s performance is numerically investigated using a validated mathematical model. The proposed fresh air processing system provides supply air parameters in or close to the summer comfort range. The analyzed system is characterized by a high coefficient of performance (COP) of up to 33.2 at an outdoor air temperature in the range of 30 °C to 38 °C and a humidity ratio in the range of 8 g/kg to 14 g/kg. Moreover, a temperature difference of up to 9.7 °C can be obtained after the two-stage membrane processing and the mixing process.

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Sustainable technologies to improve indoor air quality in a residential house – A case study in Waikato, New Zealand

Cited by 12 publications

References 24 publications

Prototyping a low-cost residential air quality device using ultraviolet germicidal irradiation (UVGI) light

Prototyping a low-cost residential air quality device using ultraviolet germicidal irradiation (UVGI) light

Combination of Passive and Active Solar Heating with Thermal Energy Storage

Modelling Analysis of a Membrane-Based Fresh Air Processing System

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