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Dr XIAOFENG ZHENG's Outputs (8)

Numerical Study on Thermal Storage-Discharge Process of Envelopes in Building Heating Systems With Different Terminals (2024)
Presentation / Conference Contribution
Xu, B., Zhang, H., Dou, Y., Zheng, X., & Yan, Y. (2024, August). Numerical Study on Thermal Storage-Discharge Process of Envelopes in Building Heating Systems With Different Terminals. Presented at ASME 2024 7th International Conference on Micro/Nanoscale Heat and Mass Transfer, Nottingham, UK

Building clusters and district heating systems have large thermal inertia, which can serve as thermal storage units and regard as important flexible resource. In this study, an integrated spatial discrete model for simulating the thermal performance... Read More about Numerical Study on Thermal Storage-Discharge Process of Envelopes in Building Heating Systems With Different Terminals.

Refined assessment and comparison of airtightness measurement of an indoor chamber using the blower door and Pulse methods (2019)
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.

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, September). 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. Presented at 39th AIVC - 7th TightVent & 5th venticool Conference

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, September). Experimental study of enclosure airtightness of an outdoor chamber using the pulse technique and blower door method under various leakage and wind conditions. Presented at 39th AIVC - 7th TightVent & 5th venticool Conference

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.

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 (2018)
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 (2018)
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 (2018)
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.

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. A comparison study of the blower door and novel pulse technique on measuring enclosure airtightness in a controlled environment. Presented at 38th AIVC - 6th TightVent & 4th venticool Conference, 2017 (AIVC 2017)

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.