Ian Ridley

Ian Ridley
City University of Hong Kong | CityU · School of Energy and Environment

BSc ,MSc, PhD

About

108
Publications
25,480
Reads
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4,125
Citations
Citations since 2016
12 Research Items
2538 Citations
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
Additional affiliations
February 2012 - July 2015
RMIT University
Position
  • Vice Chancellor's Senior Research Fellow
February 2012 - July 2015
RMIT University
Position
  • Vice Chancellor'sSenior Research Fellow
May 2006 - January 2012
University College London
Position
  • Professor (Associate)

Publications

Publications (108)
Article
Full-text available
Health and equity present obligations and currently under-realised opportunities in low carbon transitions. Energy efficiency improvements of homes may benefit health and access to affordable energy, yet better knowledge about contextual mechanisms and household practices is needed for the development of effective programs. This paper presents a mi...
Article
Full-text available
Drawing on evidence from a mixed methods retrofit intervention trial of the homes of low-income, older and frail people in Victoria, Australia, this study explored practices of heating and keeping warm in terms of equity and health. In most homes, heating restrictions led to inadequate indoor temperatures. Adaptation practices increased householder...
Article
Full-text available
A large proportion of particulate air pollution exposure in urban areas occurs due to the penetration of outdoor pollution into the residential indoor environment. Theoretical considerations suggest that quantifying health effects due to changes to indoor particulate concentrations derived from outdoor sources requires the adjustment of exposure-re...
Article
Assessment of outdoor thermal comfort requirements is of primary importance in development of sustainable outdoor environments including urban precincts. The full understanding of thermally comfortable conditions outdoors requires investigating other factors that are beyond the thermophysiological aspect of thermal comfort including those contextua...
Article
Thermochromic vanadium dioxide thin films were deposited from the electric field assisted atmospheric pressure chemical vapour deposition reaction of vanadyl acetylacetonate and 2%O2/98%N2 at temperatures between 350 and 530 °C on to fluorine doped tin oxide coated glass substrates. A potential difference was applied between the top plate and subst...
Article
Purpose Assessment of outdoor thermal perception in urban spaces is of particular importance due to its financial, social and ecological consequences. Thermal perception includes four elements: thermal sensation votes (TSV), thermal preference ( T pref ), overall thermal comfort ( T c ) and thermal acceptability ( T accept ). Thermal acceptability...
Technical Report
Full-text available
The outcomes of our 3 year evaluation into sustainable housing and low income households for the Department of Health and Human Services
Article
Full-text available
Due to increasing pressure to reduce the energy demand in buildings, thermochromic thin film based glazing has become a recognized potential solution due to the intrinsic ability to modulate the solar heat gain of a window as a function of the materials temperature. These “intelligent” glazings have been investigated for several years, and it has b...
Article
Assessment of outdoor thermal comfort provides a valuable insight into the performance outdoor built environments. During the last four decades the number of the thermal comfort studies focused on the impact of microclimate parameters on human health and wellbeing has increased. Meanwhile, advances in the thermal comfort studies have expanded to in...
Article
Increasing reliance on air-conditioning to improve summertime comfort in dwellings results in higher energy bills, peak electricity demand and environmental issues. In pursuit of social equity, society needs to develop ways of improving cooling that are less reliant on air-conditioning. Designing homes to emphasize adaptive thermal comfort can redu...
Chapter
Full-text available
The importance of universities goes beyond teaching and undertaking research. Universities can shape cities due to the significant number of buildings they occupy, large amounts of resources they consume and the high number of staff and students attending them. With many universities teaching subjects relating to sustainable planning, design, manag...
Conference Paper
Full-text available
Universities are under pressure to ‘walk the talk’ in relation to sustainability. They are expected to not just teach students about sustainable built environments, but to also put this into practice for university assets. This paper presents the challenges, opportunities and lessons learned from the process of building a best practice green buildi...
Conference Paper
Full-text available
This paper assesses the levels of comfort within outdoor educational urban precincts in Melbourne. Three urban spaces, in relatively close proximity to each other were investigated in two different seasons: spring 2014 and summer 2015. In total, 368 and 413 comfort responses were collected in the spring and summer seasons, respectively. The prelimi...
Conference Paper
Universities are under pressure to ‘walk the talk’ in relation to sustainability. They are expected to not just teach students about sustainable built environments, but to also put this into practice for university assets. This paper presents the challenges, opportunities and lessons learned from the process of building a best practice green buildi...
Conference Paper
Full-text available
Indoor temperatures are key mediators of housing related health outcomes. In Australia, policy makers have implied improved thermal comfort and better health through more stringent residential energy efficiency, yet empirical evidence is scarce. This study used temperature measurements in the living rooms of 108 detached houses in Melbourne, Victor...
Article
Better understanding is needed of building thermal performance as a mediator between climate and health outcomes. There is concern that current dwelling energy conservation strategies that focus on keeping warm in winter may lead to overheating and heat stress in summer or an increased use of cooling energy. Drawing on public health methodologies t...
Conference Paper
Full-text available
The impact of climate change and adaptation pose huge challenges to the built environment. Educational institutions in particular, are faced with not just management of their built assets, but also future proofing their assets from a climate change and adaptation perspective as well as a learning and teaching perspective. While there are recent exa...
Article
Glazing based on thermochromic thin films has been noted to potentially reduce the energy demand in buildings by modulating the solar heat gain depending on the coating temperature. Such “intelligent” glazing has been researched for a number of years with little attention paid to the thermochromic transition details such as the transition width and...
Conference Paper
The requirement to transition to a more sustainable housing future is well recognised from both the context of reducing environmental impacts and providing more affordable and equitable housing provision. There is increasing research around the technical performance of buildings which improve environmental performance and research which explores va...
Article
This paper is Part 1 of a realist review that tries to explain the impacts of residential energy efficiency interventions (REEIs) on householder health. According to recent systematic reviews residential energy efficiency interventions may benefit health. It is argued that home energy improvement are complex interventions and that a better understa...
Article
Full-text available
This paper assesses the levels of comfort within outdoor educational urban precincts in Melbourne. Three urban spaces, in relatively close proximity to each other were investigated in two different seasons: spring 2014 and summer 2015. In total, 368 and 413 comfort responses were collected in the spring and summer seasons, respectively. The prelimi...
Article
The performance, monitored over 2 years, of side by side detached Welsh Passive houses are presented. The houses which differ in terms of glazed area, the use of thermal stores, area of installed PV and occupant behaviour provide a valuable insight into different strategies to achieve low and near zero low carbon performance in social housing. Dwel...
Conference Paper
Full-text available
This paper presents the key findings of a review commissioned by the Department of Education and Early Childhood Development (DEECD) in Victoria, Australia, that explores thermal comfort, indoor air quality and ventilation requirements for Preparatory to Year 12 (P-12) educational facilities. The objectives of the review are to identify and compare...
Article
Thermochromic glazing theoretically has the potential to lead to a large reduction in energy demand in modern buildings by allowing the transmission of visible light for day lighting whilst reducing unwanted solar gain during the cooling season, but allowing useful solar gain in the heating season. In this study building simulation is used to exami...
Article
Full-text available
It is important to limit dwelling infiltration to reduce energy demand and help meet national climate change commitments while concurrently providing sufficient ventilation to deliver adequate indoor air quality. DOMVENT3D is a model of infiltration and exfiltration that assumes a linear pressure distribution over any number of uniformly porous fac...
Conference Paper
Full-text available
In the UK, transient models of heat, air and moisture transport (HAMT) are common tools used by building practitioners to better understand moisture movement within building elements and construction systems. Enforced by BS 5250:2011, hygrothermal simulations are also used for condensation risk analysis and to estimate the likelihood of mould growt...
Article
Full-text available
To investigate the effect of reducing home ventilation as part of household energy efficiency measures on deaths from radon related lung cancer. Modelling study. England. Home energy efficiency interventions, motivated in part by targets for reducing greenhouse gases, which entail reduction in uncontrolled ventilation in keeping with good practice...
Article
Thermochromic vanadium dioxide thin films were deposited via aerosol assisted chemical vapour deposition from a precursor solution of vanadyl acetylacetonate in ethanol at 525 °C on to fluorine doped tin oxide coated glass substrates. A potential difference was applied between the top plate and substrate during the deposition to generate an electri...
Article
Full-text available
The optimal ventilation rate in a dwelling is a trade-off between the requirement to minimize ventilation heat losses to help meet national greenhouse gas emission targets and the need to minimize adverse health impacts arising from exposure to cold temperatures and pollutants from indoor and outdoor origin. This paper presents approaches for explo...
Article
Full-text available
The monitored performance of the first new London dwelling certified to the Passive House standard is presented. The first detailed analysis of the energy consumption of the heating, ventilation and domestic hot water systems are given. The annual space heating demand of the 2 bedroom, 101 m2 dwelling was 12.1 kWh/m2, achieving the 15 kWh/m2 Passiv...
Article
Full-text available
The importance of reducing adventitious infiltration in order to save energy is highlighted by the relevant building standards of many countries. This operational infiltration is often inferred via the measurement of the air leakage rate at a pressure differential of 50 Pascals. Some building codes, such as the UK’s Standard Assessment Procedure, a...
Article
With a changing climate, London is expected to experience more frequent periods of intense rainfall and tidal surges, leading to an increase in the risk of flooding. This paper describes the simulation of the drying of flooded building archetypes representative of the London building stock using the EnergyPlus-based hygrothermal tool ‘University Co...
Article
Full-text available
Thermochromic glazing theoretically has the potential to lead to a large reduction in energy demand in modern buildings by allowing the transmission of visible light for day lighting whilst reducing unwanted solar gain during the cooling season, but allowing useful solar gain in the heating season. In this study building simulation is used to exami...
Article
Full-text available
Simulations using CONTAM (a validated multi-zone indoor air quality (IAQ) model) are employed to predict indoor exposure to PM2.5 in London dwellings in both the present day housing stock and the same stock following energy efficient refurbishments to meet greenhouse gas emissions reduction targets for 2050. We modelled interventions that would con...
Article
Full-text available
This paper presents a methodology to monitor the performance of buildings in a Zero Carbon City from the occupant perspective. Masdar City in Abu Dhabi is hailed as the World's pioneering Zero Carbon Zero Waste city. The initial phase of construction is complete and the first students have moved into the residential quarters of the Masdar Institute...
Conference Paper
Full-text available
Climate change mitigation and adaptation policies in the built environment can reduce greenhouse gas emissions and also bring ancillary public health benefits by reducing coldrelated mortality and indoor air pollution. However, increased airtightness of dwellings may have some negative effects on health related to thermal stress and chemical and bi...
Article
Following the Japanese Cool Biz campaign which advocated relaxed dress codes and cooling set-points of 28 degrees C in air-conditioned public buildings, other countries have introduced similar policies, with temperature limits varying in different countries. In the UK the British Council for Offices suggested that the summer cooling set-points of U...
Conference Paper
Full-text available
Previous small scale modelling has been substantially extended to include multiple geometries more accurately representing the Greater London Area (GLA) domestic stock and quantifying personal exposure to PM2.5 being experienced currently and following the application of energy efficiency measures needed to meet 2050 CO2 reduction targets. Results...
Article
Thermochromic fluorine doped thin films of vanadium dioxide were deposited from the aerosol assisted chemical vapour deposition reaction of vanadyl acetylacetonate, ethanol and trifluoroacetic acid on glass substrates. The films were characterised with scanning electron microscopy, variable temperature Raman spectroscopy and variable temperature UV...
Article
Full-text available
This article discusses the capabilities and the application of an innovative combined hygrothermal and population model to assess the impact of building design and occupant behaviour on house dust mite populations in a mattress. The combined model is the first of its kind able to predict the impact of hourly transient hygrothermal conditions within...
Article
Full-text available
Thin films of thermochromic vanadium dioxide have been the subject of intensive research in recent years year due to their postulated use as "intelligent" window coatings. The usefulness of such technology depends on a semi-conducting to metal transition with an associated change in infra-red optical properties. This exact nature of this transition...
Article
With a changing climate and increased urbanisation, the occurrence and the impact of flooding is expected to increase significantly. Floods can bring pathogens into homes and cause lingering damp and microbial growth in buildings, with the level of growth and persistence dependent on the volume and chemical and biological content of the flood water...
Article
Full-text available
Energy used in dwellings is an important target for actions aimed at averting climate change. It is increasingly recognised that these actions may also have near-term effects on health arising from changes to the indoor environment. As part of a major study of such health effects, we modelled hypothetical household energy interventions for the UK o...
Article
Full-text available
The urban heat island (UHI) is a well-known effect of urbanisation and is particularly important in world megacities. Overheating in such cities is expected to be exacerbated in the future as a result of further urban growth and climate change. Demonstrating and quantifying the impact of individual design interventions on the UHI is currently diffi...
Article
Theoretically thermochromic glazing has the potential to reduce energy consumption in buildings by allowing visible light for day lighting, reducing unwanted solar gain during the cooling season, whilst allowing useful solar gain in the heating season. In this study building simulation is used to predict the savings made by novel thermochromic glaz...
Article
Theoretically thermochromic glazing has the potential to reduce energy consumption in buildings by allowing visible light for day lighting, reducing unwanted solar gain during the cooling season, while allowing useful solar gain in the heating season. In this study building simulation is used to predict the savings made by novel thermochromic glazi...
Article
A hybrid atmospheric pressure and aerosol-assisted chemical vapour deposition strategy is presented as a facile route for the production of vanadium dioxide nano-composite thin films. The effect of the inclusion of gold nanoparticles and the use of a surfactant molecule, tetraoctylammonium bromide, is discussed. The films were fully characterised u...
Article
Energy used in dwellings is an important target for actions to avert climate change. Properly designed and implemented, such actions could have major co-benefits for public health. To investigate, we examined the effect of hypothetical strategies to improve energy efficiency in UK housing stock and to introduce 150 million low-emission household co...
Article
Previous studies have found that classrooms are often inadequately ventilated, with the resultant increased risk of negative impacts on the pupils. This paper describes a series of field measurements that investigated the indoor air quality, thermal comfort and acoustic performance of nine recently built secondary schools in England. The most signi...
Article
Full-text available
This study investigates the effect of England's Warm Front energy efficient refurbishment scheme on winter thermal comfort in low-income dwellings. The analysis is based on an extensive survey of some 2500 dwellings selected from five major urban areas in England over the winters of 2001/02 and 2002/03. The surveys were carried out either before or...
Article
Full-text available
The importance of maintaining adequate indoor air quality in schools is recognised as a contributing factor to pupils' learning performance. This paper describes a series of field measurements that investigating the ventilation rates in four recently built secondary schools in England. All schools were assessed for compliance with the recently adop...
Article
This study addresses the anthropogenic heat emissions from buildings in London, i.e. the total energy delivered to buildings, all of which will ultimately end up as heat energy. The study was undertaken in an attempt to understand the significance of these emissions with regards to the impact on the local climate in London. In order to place the em...
Poster
Full-text available
The research on new “energy materials” is a very interesting field of study in the direction of energy saving control in the building construction sector. Lots of studies have been carrying on to develop new enhanced glazing, new synthesis and analysing procedures but simulating their real behaviour is often very difficult and expensive. The easies...
Conference Paper
Full-text available
The research on new “energy materials” is a very interesting field of study in the direction of energy saving control in the building construction sector. Lots of studies have been carrying on to develop new enhanced glazing, new synthesis and analysing procedures but simulating their real behaviour is often very difficult and expensive. The easies...
Article
There is now widespread acceptance that mould growth in buildings should be avoided as it may lead to adverse health effects. Consequently, it is critically important to have appropriate guidelines that address this issue. As well as reviewing the existing literature with regard to the state of the art of relevant mould-related research, this chapt...
Article
This paper addresses the tension between the need to improve the energy efficiency of buildings and the requirement to ensure that in doing so, a healthy indoor environment is not compromised. We assess the potential impact on health from one very specific technology - window replacement - related to the delivery of the required reduction of CO2 em...
Article
Full-text available
Life histories of "wild" house dust mites, Dermatophagoides pteronyssinus (Trouessart) (Acari: Pyroglyphidae), were compared with laboratory cultures by using a diet consisting of skin and dust or a laboratory diet consisting of dried liver and yeast. Under constant conditions of 25 degrees C and 75% RH, fecundity and rate of reproduction were high...
Article
The possible benefits of automatic ventilation control of trickle ventilators in dwellings are investigated. Such ventilators could offer an improvement in performance over fixed ventilators, due to their ability to adjust to environmental conditions without occupant interaction, thus improving energy efficiency and providing adequate indoor air qu...
Article
Full-text available
A generalised model of the life cycle of a house dust mite, which can be tailored to any particular species of domestic mite, is presented. The model takes into account the effects of hygrothermal conditions on each life cycle phase. It is used in a computer simulation program, called POPMITE, which, by incorporating a population age structure, is...
Article
Full-text available
SUMMARY Within the UK, the importance of providing adequate ventilation in schools has been recognised in a recently adopted document (Building Bulletin 101), which defines the set of performance criteria in relation to ventilation rates and indoor air quality in new school buildings. This paper describes a series of field measurements that investi...
Article
Full-text available
This paper describes a series of field measurements investigating the ventilation rates and indoor air quality in four newly built secondary schools in England. In these schools - each with a different ventilation strategy - measurements and calculations were performed to determine the variation in ventilation rates during the school day. All the s...
Article
Full-text available
The aim of this study is to examine the effect of a major domestic energy efficiency refurbishment programme on domestic space heating fuel consumption. The case study dwellings were monitored either before or after (or both) the introduction of energy efficiency retrofit measures such as cavity wall insulation, loft insulation, draught stripping a...
Article
Full-text available
Accurate assessment of both surface and interstitial condensation risk is important not only to reduce the damaging effect of moisture within the structure of buildings, but also to provide a healthy environment free from mould growth. The current British Standard (BS EN ISO 13788: 2002) contains an assessment procedure based on the assumption of a...
Article
Full-text available
This paper examines the extent to which variation in heating-season, indoor relative humidity (RH) and mould occurrence in English households is explained by dwelling and household characteristics. It is based on analysis of data from a national study of England's Home Energy Efficiency scheme (Warm Front) which provides grants for energy efficienc...