A dynamic model of hollow ventilated interior wall integrated with solar air collector

Zhou, Jiri; Yu, Tao; Wu, Hao; Lei, Bo; Zheng, Jiacheng; Ji, Wenhui

doi:10.1016/j.applthermaleng.2020.115380

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…Based on the building standards in Lhasa (cold regions), some heat transfer coefficients of the building constructions given in the model are listed in Table 1 [11]. Furthermore, the SHGC (Solar Heat Gain Coefficient) of glass walls in the model is 0.72 [12].…”

Section: Studied Buildingmentioning

confidence: 99%

Research on the influence of uneven solar radiation distribution on the radiant floor heating system in railway stations on Tibetan Plateau

Zheng

Lei

et al. 2021

E3S Web Conf.

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In cold regions, radiant floor heating systems are commonly used in public buildings due to better thermal comfort and lower energy consumption. However, in transportation buildings with many transparent envelopes such as railway stations on Tibetan Plateau, the strong solar radiation entering into the station may cause local overheating, which has a great effect on the radiant floor heating system. In this paper, a railway station on Tibetan Plateau is simulated to investigate the influence of uneven solar radiation distribution on the radiant floor heating system. Results show that due to the strong solar radiation, the floor surface temperature and indoor operative temperature in some parts of the waiting hall can reach up to 30 °C and 26 °C, respectively. The temperature difference of the floor surface can even exceed 5 °C occasionally during the heating period. According to the results, it can be found that the method of reducing the heating in the area with strong solar radiation and making full use of solar radiation for heating is an effective way to improve the indoor thermal comfort and reduce the heating energy consumption of heating system.

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Section: Studied Buildingmentioning

confidence: 99%

Research on the influence of uneven solar radiation distribution on the radiant floor heating system in railway stations on Tibetan Plateau

Zheng

Lei

et al. 2021

E3S Web Conf.

Self Cite

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“…The effective efficiency can reach 67.83%, when the air velocity in the collectors is 1.14 m/s. Zhou et al (2020) designed a GTC and hollow ventilated interior wall coupling system suitable for residential buildings on Tibetan Plateau, and the coupling system could provide thermal energy for residential buildings at nighttime. Zhang et al (2016) applied the GTC to rural areas of northeast China, and the results showed that the GTC can effectively improve the indoor thermal comfort and reduce indoor environmental pollution in cold areas.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on the performance of a novel triangular solar air collector with tilted transparent cover plate

et al. 2021

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Research on the thermal performance of SAC-HVIW system under the influence of solar transmission and local radiant heater

Zhou

Lei

et al. 2021

J. Phys.: Conf. Ser.

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Solar air collector (SAC ) combining with hollow ventilated interior wall (HVIW ) system is a new type of energy-saving and environmentally friendly heating system. In engineering applications, it will be affected by solar transmission and local radiant heat sources (external heat gain), but these factors have not been considered in previous studies. In this paper, the series connection of HVIW simplified heat exchange unit model is used to improve the original thermal network of the SAC-HVIW building, and experimental verification is carried out. Results show that the temperature deviation of the air cavity and the wall surface calculated by the model are all within 10%, which can be used for the external heat gain calculation of HVIW. Then, in order to research the influence of the intensity of external heat gain and the position of action on the thermal process of HVIW, seven cases of simulation calculation were designed. Results show that when the external heat gain is the same but the acting position is different, it has little effect on the minimum and fluctuation of the indoor air temperature (all within 0.1°C). However, the change of external heat gain has obvious influence on the minimum temperature. When the external heat gain of cases are 136W and 900W, the corresponding minimum temperature are about 0.5°C and 3.5°C higher than the cases of 82W, respectively.

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A dynamic model of hollow ventilated interior wall integrated with solar air collector

Cited by 5 publications

References 34 publications

Research on the influence of uneven solar radiation distribution on the radiant floor heating system in railway stations on Tibetan Plateau

Research on the influence of uneven solar radiation distribution on the radiant floor heating system in railway stations on Tibetan Plateau

A comparative study on the performance of a novel triangular solar air collector with tilted transparent cover plate

Research on the thermal performance of SAC-HVIW system under the influence of solar transmission and local radiant heater

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