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CHRISTOPHER WOOD's Outputs (28)

Enhancing the detection performance of a vision-based window opening detector (2022)
Journal Article
Tien, P. W., Wei, S., Calautit, J., Darkwa, J., & Wood, C. (2022). Enhancing the detection performance of a vision-based window opening detector. Cleaner Energy Systems, 3, Article 100038. https://doi.org/10.1016/j.cles.2022.100038

In favourable climates and building types, employing natural ventilation can lead to significant energy savings and health benefits. However, in cold climates or conditions, the use of natural ventilation could result in significant heat loss and, co... Read More about Enhancing the detection performance of a vision-based window opening detector.

The impact of wind upon the pulse technique measured airtightness of a detached dwelling (2022)
Journal Article
Hsu, Y. S., Zheng, X., Kraniotis, D., Gillott, M., Lee, S. K., & Wood, C. J. (2022). The impact of wind upon the pulse technique measured airtightness of a detached dwelling. Building and Environment, 215, Article 108955. https://doi.org/10.1016/j.buildenv.2022.108955

The novel Pulse technique measures the building airtightness in a dynamic approach, involving a low-pressure pressurisation process, typically in 1–10Pa. It is known that the wind effect is one of the main sources of uncertainty for airtightness test... Read More about The impact of wind upon the pulse technique measured airtightness of a detached dwelling.

Real-time monitoring of occupancy activities and window opening within buildings using an integrated deep learning-based approach for reducing energy demand (2021)
Journal Article
Tien, P. W., Wei, S., Calautit, J. K., Darkwa, J., & Wood, C. (2022). Real-time monitoring of occupancy activities and window opening within buildings using an integrated deep learning-based approach for reducing energy demand. Applied Energy, 308, Article 118336. https://doi.org/10.1016/j.apenergy.2021.118336

Occupancy behaviour in buildings can impact the energy performance and operation of heating, ventilation and air-conditioning (HVAC) systems. HVAC, which uses conventional control strategies or “fixed” setpoint schedules, could not adjust to the cond... Read More about Real-time monitoring of occupancy activities and window opening within buildings using an integrated deep learning-based approach for reducing energy demand.

A deep learning approach towards the detection and recognition of opening of windows for effective management of building ventilation heat losses and reducing space heating demand (2021)
Journal Article
Tien, P. W., Wei, S., Liu, T., Calautit, J., Darkwa, J., & Wood, C. (2021). A deep learning approach towards the detection and recognition of opening of windows for effective management of building ventilation heat losses and reducing space heating demand. Renewable Energy, 177, 603-625. https://doi.org/10.1016/j.renene.2021.05.155

Building ventilation accounts for up to 30% of the heat loss in commercial buildings and 25% in industrial buildings. To effectively aid the reduction of energy consumption in the building sector, the development of demand-driven control systems for... Read More about A deep learning approach towards the detection and recognition of opening of windows for effective management of building ventilation heat losses and reducing space heating demand.

Evaluation of the indoor pressure distribution during building airtightness tests using the pulse and blower door methods (2021)
Journal Article
Hsu, Y.-S., Zheng, X., Cooper, E., Gillott, M., & Wood, C. J. (2021). Evaluation of the indoor pressure distribution during building airtightness tests using the pulse and blower door methods. Building and Environment, 195, Article 107742. https://doi.org/10.1016/j.buildenv.2021.107742

Building airtightness is a critical aspect for energy-efficient buildings as the energy performance of a building can be significantly reduced by poor airtightness. The Pulse technique has been regarded as a promising technology, measuring building a... Read More about Evaluation of the indoor pressure distribution during building airtightness tests using the pulse and blower door methods.

Field testing of the QUB method for assessing the thermal performance of dwellings: In situ measurements of the heat transfer coefficient of a circa 1950s detached house in UK (2020)
Journal Article
Sougkakis, V., Meulemans, J., Wood, C., Gillott, M., & Cox, T. (2021). Field testing of the QUB method for assessing the thermal performance of dwellings: In situ measurements of the heat transfer coefficient of a circa 1950s detached house in UK. Energy and Buildings, 230, Article 110540. https://doi.org/10.1016/j.enbuild.2020.110540

In this paper the findings from a long-term field study of the thermal performance of a circa 1950s dwelling are presented and discussed. The study aimed at evaluating the robustness of the QUB method in the field under UK climatic conditions. A seri... Read More about Field testing of the QUB method for assessing the thermal performance of dwellings: In situ measurements of the heat transfer coefficient of a circa 1950s detached house in UK.

Quantifying airtightness in Brazilian residential buildings with focus on its contribution to thermal comfort (2020)
Journal Article
Rodrigues, L., Tubelo, R., Vega Pasos, A., Gonçalves, J. C. S., Wood, C., & Gillott, M. (2020). Quantifying airtightness in Brazilian residential buildings with focus on its contribution to thermal comfort. Building Research and Information, https://doi.org/10.1080/09613218.2020.1825064

© 2020 Informa UK Limited, trading as Taylor & Francis Group. Airtightness refers to the amount of air leakage through a building’s envelope. This uncontrolled exchange of air between inside and outside, either infiltration or exfiltration, may lea... Read More about Quantifying airtightness in Brazilian residential buildings with focus on its contribution to thermal comfort.

Estimation of the infiltration rate of UK homes with the divide-by-20 rule and its comparison with site measurements (2020)
Journal Article
Vega Pasos, A., Zheng, X., Smith, L., & Wood, C. (2020). Estimation of the infiltration rate of UK homes with the divide-by-20 rule and its comparison with site measurements. Building and Environment, 185, Article 107275. https://doi.org/10.1016/j.buildenv.2020.107275

Buildings are responsible for 40% of the global energy usage to which infiltration-caused heat losses are responsible for 30%. Air infiltration is the unintended flow of air through leakage paths and fundamentally determined by the airtightness of a... Read More about Estimation of the infiltration rate of UK homes with the divide-by-20 rule and its comparison with site measurements.

On the power law and quadratic forms for representing the leakage-pressure relationship- Case studies of sheltered chambers (2020)
Journal Article
Zheng, X., & Wood, C. (2020). On the power law and quadratic forms for representing the leakage-pressure relationship- Case studies of sheltered chambers. Energy and Buildings, 226, Article 110380. https://doi.org/10.1016/j.enbuild.2020.110380

The leakage characteristics of a building can be described by a leakage-pressure relationship, which sometimes is referred to as flow-pressure relationship. This relationship provides the leakage rate through the building envelope when it is subject... Read More about On the power law and quadratic forms for representing the leakage-pressure relationship- Case studies of sheltered chambers.

A practical review of alternatives to the steady pressurisation method for determining building airtightness (2020)
Journal Article
Zheng, X., Cooper, E., Gillott, M., Vega Pasos, A., & Wood, C. (2020). A practical review of alternatives to the steady pressurisation method for determining building airtightness. Renewable and Sustainable Energy Reviews, 132, Article 110049

As an important indicator of construction quality and envelope integrity of buildings, airtightness is responsible for a considerable amount of energy losses associated with infiltration. It is crucial to understand building airtightness during const... Read More about A practical review of alternatives to the steady pressurisation method for determining building airtightness.

Airtightness measurement of an outdoor chamber using the Pulse and blower door methods under various wind and leakage scenarios (2020)
Journal Article
Zheng, X., Mazzon, J., Wallis, I., & Wood, C. J. (2020). Airtightness measurement of an outdoor chamber using the Pulse and blower door methods under various wind and leakage scenarios. Building and Environment, 179, Article 106950. https://doi.org/10.1016/j.buildenv.2020.106950

As a continued investigation following the previous testing of a house-sized chamber in a sheltered environment, this paper introduces an experimental study of airtightness measurement of an outdoor chamber using both the novel Pulse technique and th... Read More about Airtightness measurement of an outdoor chamber using the Pulse and blower door methods under various wind and leakage scenarios.

Experimental insights into the airtightness measurement of a house-sized chamber in a sheltered environment using blower door and pulse methods (2019)
Journal Article
Zheng, X., Cooper, E., Mazzon, J., Wallis, I., & Wood, C. (2019). Experimental insights into the airtightness measurement of a house-sized chamber in a sheltered environment using blower door and pulse methods. Building and Environment, 162, Article 106269. https://doi.org/10.1016/j.buildenv.2019.106269

This paper introduces a comparison study of measuring the airtightness of a house-sized test chamber using the novel pulse technique and a low range blower door method in a sheltered environment. Eight different testing plates were prepared and appli... Read More about Experimental insights into the airtightness measurement of a house-sized chamber in a sheltered environment using blower door and pulse methods.

Development of a 1000 W organic Rankine cycle micro-turbine-generator using polymeric structural materials and its performance test with compressed air (2019)
Journal Article
Hernandez-Carrillo, I., Wood, C., & Liu, H. (2019). Development of a 1000 W organic Rankine cycle micro-turbine-generator using polymeric structural materials and its performance test with compressed air. Energy Conversion and Management, 190, 105-120. https://doi.org/10.1016/j.enconman.2019.03.092

This paper presents the experimental advances on the implementation of structural polymeric materials in a micro-turbine-generator for an organic Rankine cycle (ORC) and through testing provides an insight of its performance. The aim is to create awa... Read More about Development of a 1000 W organic Rankine cycle micro-turbine-generator using polymeric structural materials and its performance test with compressed air.

An extended pressure range comparison of the blower door and novel pulse method for measuring the airtightness of two outdoor chambers with different levels of airtightness (2018)
Presentation / Conference Contribution
Wood, C., Zheng, X., Vega Pasos, A., Hsu, Y.-S., & Smith, L. (2018). An extended pressure range comparison of the blower door and novel pulse method for measuring the airtightness of two outdoor chambers with different levels of airtightness. In Proceedings of 39th AIVC - 7th TightVent & 5th venticool Conference, Antibes Juan-Les-Pins, France, 18-19 September 2018 (915-925)

The steady pressurisation method measures the building leakage in a range of high pressures, typically 10-60 Pa. It is implemented by creating a steady pressure difference across the building envelope and measuring the corresponding airflow exchange... Read More about An extended pressure range comparison of the blower door and novel pulse method for measuring the airtightness of two outdoor chambers with different levels of airtightness.

Experimental study of enclosure airtightness of an outdoor chamber using the pulse technique and blower door method under various leakage and wind conditions (2018)
Presentation / Conference Contribution
Zheng, X., Mazzon, J., Wallis, I., & Wood, C. J. (2018). Experimental study of enclosure airtightness of an outdoor chamber using the pulse technique and blower door method under various leakage and wind conditions. In N/A (352-362)

This paper introduces an experimental study of enclosure airtightness testing of an outdoor chamber using both the pulse technique and the blower door method. This investigation is a 2nd stage comparison study following the previous testing of a hous... Read More about Experimental study of enclosure airtightness of an outdoor chamber using the pulse technique and blower door method under various leakage and wind conditions.

Quantifying uncertainty in thermophysical properties of walls by means of Bayesian inversion (2018)
Journal Article
De Simon, L., Iglesias, M., Jones, B., & Wood, C. (2018). Quantifying uncertainty in thermophysical properties of walls by means of Bayesian inversion. Energy and Buildings, 177, 220-245. https://doi.org/10.1016/j.enbuild.2018.06.045

We introduce a computational framework to statistically infer thermophysical properties of any given wall from in-situ measurements of air temperature and surface heat fluxes. The proposed framework uses these measurements, within a Bayesian calibrat... Read More about Quantifying uncertainty in thermophysical properties of walls by means of Bayesian inversion.

Bayesian inferences of the thermal properties of a wall using temperature and heat flux measurements (2017)
Journal Article
Iglesias, M., Sawlan, Z., Scavino, M., Tempone, R., & Wood, C. J. (2018). Bayesian inferences of the thermal properties of a wall using temperature and heat flux measurements. International Journal of Heat and Mass Transfer, 116, https://doi.org/10.1016/j.ijheatmasstransfer.2017.09.022

The assessment of the thermal properties of walls is essential for accurate building energy simulations that are needed to make effective energy-saving policies. These properties are usually investigated through in-situ measurements of temperature an... Read More about Bayesian inferences of the thermal properties of a wall using temperature and heat flux measurements.

A comparison study of the blower door and novel pulse technique on measuring enclosure airtightness in a controlled environment (2017)
Presentation / Conference Contribution
Zheng, X., Cooper, E., Mazzon, J., Wallis, I., & Wood, C. J. (2017). A comparison study of the blower door and novel pulse technique on measuring enclosure airtightness in a controlled environment.

This paper introduces a comparison study of measuring the airtightness of a house sized test chamber using the novel pulse technique and the standard blower door method in a controlled environment. Eight different testing plates have been applied to... Read More about A comparison study of the blower door and novel pulse technique on measuring enclosure airtightness in a controlled environment.

Field trialling of a pulse airtightness tester in a range of UK homes (2016)
Journal Article
Cooper, E., Zheng, X., Wood, C., Gillott, M. C., Tetlow, D., Riffat, S., & Simon, L. D. (2019). Field trialling of a pulse airtightness tester in a range of UK homes. International Journal of Ventilation, 18(1), 1-18. https://doi.org/10.1080/14733315.2016.1252155

A new low pressure ‘quasi-steady’ pulse technique for determining the airtightness of buildings has been developed further and compared with the standard blower-door technique for field-testing a range of typical UK homes. The reported low pressure a... Read More about Field trialling of a pulse airtightness tester in a range of UK homes.

Ni Mg Mixed Metal Oxides for p-Type Dye-Sensitized Solar Cells (2015)
Journal Article
Zannotti, M., Wood, C. J., Summers, G. H., Stevens, L. A., Hall, M. R., Snape, C. E., …Gibson, E. A. (2015). Ni Mg Mixed Metal Oxides for p-Type Dye-Sensitized Solar Cells. ACS Applied Materials and Interfaces, 7(44), 24556-24565. https://doi.org/10.1021/acsami.5b06170

Mg Ni mixed metal oxide photocathodes have been prepared by a mixed NiCl2/MgCl2 sol-gel process. The MgO/NiO electrodes have been extensively characterized using physical and electrochemical methods. Dye-sensitized solar cells have been prepared from... Read More about Ni Mg Mixed Metal Oxides for p-Type Dye-Sensitized Solar Cells.

Experimental study on the measurement of building infiltration and air leakage rate (at 4 and 50 Pa) by means of tracer gas methods, blower door and the novel pulse technique in a detached UK home
Presentation / Conference Contribution
Vega Pasos, A., Zheng, X., Sougkakis, V., Gillott, M., Meulemans, J., Samin, O., Alzetto, F., Smith, L., Jackson, S., & Wood, C. J. (2018, September). Experimental study on the measurement of building infiltration and air leakage rate (at 4 and 50 Pa) by means of tracer gas methods, blower door and the novel pulse technique in a detached UK home. Presented at 39th AIVC - 7th TightVent & 5th venticool Conference, Antibes Juan-Les-Pins, France

Air infiltration contributes to a heat loss typically representing up to one third of the heating demand of a building. The building airtightness, also quantified as air leakage, is the fundamental building property that impacts infiltration. The ste... Read More about Experimental study on the measurement of building infiltration and air leakage rate (at 4 and 50 Pa) by means of tracer gas methods, blower door and the novel pulse technique in a detached UK home.

Experimental studies of a pulse pressurisation technique for measuring building airtightness
Presentation / Conference Contribution
Zheng, X., Cooper, E., Zu, Y., Gillott, M., Tetlow, D., Riffat, S., & Wood, C. (2018, August). Experimental studies of a pulse pressurisation technique for measuring building airtightness. Presented at 17th International Conference on Sustainable Energy Technology (SET 2018), Wuhan, China

A pulse pressurisation technique is developed and utilised for determining building leakage at low pressure, based on a 'quasi-steady pulse' concept. The underlying principle of the technique is to subject the building envelope to a known volume chan... Read More about Experimental studies of a pulse pressurisation technique for measuring building airtightness.

Experimental investigation of the impact of environmental conditions on the measurement of building infiltration, and its correlation with airtightness
Presentation / Conference Contribution
Vega Pasos, A., Zheng, X., Sougkakis, V., Gillott, M., Meulemans, J., Samin, O., Alzetto, F., Smith, L., Jackson, S., & Wood, C. J. (2018, September). Experimental investigation of the impact of environmental conditions on the measurement of building infiltration, and its correlation with airtightness. Presented at 39th AIVC - 7th TightVent & 5th venticool Conference, Juan-Les-Pins, France

The air infiltration of a building, which fundamentally depends on its airtightness, can be a significant contributor to its heat loss. It can also be affected by other factors such as external terrain, leakage distribution, sheltering factor and env... Read More about Experimental investigation of the impact of environmental conditions on the measurement of building infiltration, and its correlation with airtightness.

QUB/e: Validation of a transient method for determining whole building thermal performance and building element U-values in situ under actual operating conditions
Presentation / Conference Contribution
Sougkakis, V., Wood, C., Meulemans, J., Gillot, M., & Cox, T. (2018, August). QUB/e: Validation of a transient method for determining whole building thermal performance and building element U-values in situ under actual operating conditions. Presented at 17th International Conference on Sustainable Energy Technologies – SET 2018, Wuhan, China

Growing evidence in recent years has suggested that a difference exists between the design and the as-built thermal performance of UK dwellings. This difference commonly known as the ‘performance gap’ may have serious implications on the UK governmen... Read More about QUB/e: Validation of a transient method for determining whole building thermal performance and building element U-values in situ under actual operating conditions.

Refined assessment and comparison of airtightness measurement of an indoor chamber using the blower door and Pulse methods
Presentation / Conference Contribution
ZHENG, X., Smith, L., Moring, A., & Wood, C. (2019, October). Refined assessment and comparison of airtightness measurement of an indoor chamber using the blower door and Pulse methods. Presented at 40th AIVC - 8th TightVent - 6th venticool Conference, Ghent, Belgium

Previous studies have compared the airtightness measurement of test enclosures utilising both the novel Pulse technique and the conventional blower door method. Discrepancies between results of the two test methods were observed and it was concluded... Read More about Refined assessment and comparison of airtightness measurement of an indoor chamber using the blower door and Pulse methods.