Maximum window-to-wall ratio of a thermally autonomous building as a function of envelope U -value and ambient temperature amplitude

Ma, Peizheng; Wang, Lin–Shu; Guo, Nianhua

doi:10.1016/j.apenergy.2015.01.103

Cited by 66 publications

(26 citation statements)

References 13 publications

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“…The potential benefits of glazing systems on energy balance are still debated, above all from the near-zero energy buildings perspective [10,11]. The glazing systems should be designed as components that gain more energy than they lose in winter and just the opposite in summer in order to positively contribute to the energy balance of a building.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Performance of a Ventilated Window Coupled with a Heat Recovery Unit through the Co-Heating Test

et al. 2016

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Abstract:The aim of the article is to describe the results of an experimental campaign based on the assessment of a heat recovery unit coupled with a dynamic window. Two fully monitored and calibrated outdoor test cells are used, in order to evaluate the energy performance and the related thermal comfort. The former presents a traditional window with double-glazing, aluminum frame and indoor blind and a centrifugal extractor for the air circulation. The latter is equipped with a dynamic window with ventilated and blinded double-glazing provided with a heat exchanger. The connection of the dynamic window and heat recovery unit provides different actions: heat recovery; heat transfer reduction; pre-heating before the exchanger. Different operating configurations allowed the trends of the dynamic system to be assessed in different seasons in terms of energy saving, thermal comfort behavior and energy efficiency. The results showed an overall lower consumption of the innovative system, both in winter and summer, with 20% and 15% energy saving, respectively. In general, the dynamic system provided the best comfort conditions, even if it involves a worse behavior than expected, in the summer season.

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Section: Introductionmentioning

confidence: 99%

Assessment of the Performance of a Ventilated Window Coupled with a Heat Recovery Unit through the Co-Heating Test

et al. 2016

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“…(5)-(7) and in particular (5) will not be higher than the measurement of heat flux, or at least not higher than the uncertainty described by Li. The latest investigation studies [41] also show a considerable impact of the thermal conductivity envelope and temperature amplitudes on thermal resistance U. The research studies described in the present paper also demonstrate the influence of temperature changes on the estimation of thermal transmittance.…”

Section: Analysis Of Results and Discussionmentioning

confidence: 52%

Estimation of thermal transmittance based on temperature measurements with the application of perturbation numbers

et al. 2017

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Fast estimation of thermal transmittance based on temperature measurements is uncertain, and the obtained results can be burdened with a large error. Nevertheless, such attempts should be undertaken merely due to the fact that a precise measurement by means of heat flux measurements is not always possible in field conditions (resentment of the residents during the measurements carried out inside their living quarters), and the calculation methods do not allow for the nonlinearity of thermal insulation, heat bridges or other fragments of building envelope of diversified thermal conductivity. The present paper offers the estimation of thermal transmittance and internal surface resistance with the use of temperature measurements (in particular with the use of thermovision). The proposed method has been verified through tests carried out on a laboratory test stand built in the open space, subjected to the influence of real meteorological conditions. The present elaboration involves the estimation of thermal transmittance by means of temperature measurements. Basing on the mentioned estimation, the authors present correction coefficients which have impact on the estimation accuracy. Furthermore, in the final part of the paper, various types of disturbance were allowed for using perturbation numbers, and the introduced by the authors Bcredibility area of thermal transmittance estimation^was determined.

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“…The south windows are main way to gain solar energy for the passive solar house, so the area of south windows are very significant for improving the indoor thermal environment. In the test building, the area of south windows to wall is nearly 0.3 which is lower than specification regulated data of 0.5 [12]. The larger area ratio of south window to wall the more solar energy can be collected, but too large area ratio of south window to wall can cause indoor overheat in summer.…”

Section: Improvement Measures Of Indoor Thermal Environmentmentioning

confidence: 84%

Investigation of Indoor Thermal Environment for Rural Passive Solar House in Zhongwei of Ningxia Area

Sang

Chen²,

Yan³

et al. 2015

Proceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering

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Abstract:In order to probe into and solve the problems of rural residential heating by using solar energy in winter, the indoor and outdoor thermal environmental parameters of a passive solar heating house are tested and indoor thermal environment is analyzed and evaluated using the operating temperature in this paper. Results show that the local rich solar energy resources are suitable for the development of passive solar houses and through the rural architecture with the sunlight directly and the transition temperature region reasonable setting can effectively improve the thermal environment quality in the main rooms of existing rural house. But the quality of the indoor thermal environment in winter of existing rural buildings is not ideal. With low indoor temperature and large temperature fluctuations, so that it is necessary to strengthen the heat collection and heat storage design of architectures.

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Maximum window-to-wall ratio of a thermally autonomous building as a function of envelope U -value and ambient temperature amplitude

Cited by 66 publications

References 13 publications

Assessment of the Performance of a Ventilated Window Coupled with a Heat Recovery Unit through the Co-Heating Test

Assessment of the Performance of a Ventilated Window Coupled with a Heat Recovery Unit through the Co-Heating Test

Estimation of thermal transmittance based on temperature measurements with the application of perturbation numbers

Investigation of Indoor Thermal Environment for Rural Passive Solar House in Zhongwei of Ningxia Area

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