Energy Saving Evaluation of the Ventilated BIPV Walls

Lai, Chi Ming; Lin, Yi

doi:10.3390/en4060948

Cited by 10 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In previous studies, 21,22 we numerically demonstrated the significant variation in the performance of ventilated BIPV walls with various wall thicknesses (i.e. different flow channel widths).…”

Section: Introductionmentioning

confidence: 88%

“…Thus, a ventilated BIPV can be designed using designs for a solar chimney 14,15 and double-skin [16][17][18] structure, and the thermal buoyancy force and a natural ventilation mode can be used to achieve natural ventilation and heat dispersion in the BIPV, resulting in excellent external wall insulation. [19][20][21][22][23][24] Peng et al 23 designed a ventilated BIPV as a wall surface and used numerical heat transfer models to analyse the thermal performance. Han et al, 20 Peng et al, 24 and Gaillard et al 19 designed ventilated BIPVs as see-through windows and conducted field tests to evaluate the thermal performance.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental and numerical studies on the thermal performance of ventilated BIPV curtain walls

Lai

Hokoi

2015

Indoor and Built Environment

Self Cite

View full text Add to dashboard Cite

In this study, we integrated a photovoltaic (PV) system, a double-skin structure and a thermal flow mechanism to design ventilated building-integrated photovoltaic (BIPV) curtain walls that can autogenously control an environment using buoyant force. Full-scale experiments and computational fluid dynamics (CFD) simulations were conducted to investigate the flow pattern characteristics for the channel airflow and the thermal performance of the ventilated BIPV curtain walls under various heating conditions, wall thicknesses and types of openings. Channel flows for different channel widths under the same wall heating exhibited different flow patterns and therefore variations in thermal performance. The developed ventilated BIPV curtain walls effectively removed their solar heat gain while maintaining adequate wall thermal performance.

show abstract

Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Experimental and numerical studies on the thermal performance of ventilated BIPV curtain walls

Lai

Hokoi

2015

Indoor and Built Environment

Self Cite

View full text Add to dashboard Cite

show abstract

“…Similarly, transmission heat losses of the envelope building structure can be decreased if the air gap, designed inside the building structures, is ventilated by outdoor air, and then transferred into the buildings as preheated air. In [18] building ventilated opaque BIPV was studied at a steady state outdoor temperature, solar irradiation, and wind velocity. Indoor heat gains were investigated using computational fluid dynamics (CFD) techniques and compared to static heat losses expressed by thermal transmittance U of the building envelope structure.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Energy Efficiency of Multi-Functional BIPV Glazed Façade Structure during Heating Season

et al. 2020

View full text Add to dashboard Cite

Building integrated photovoltaics (BIPV) is technology that can significantly increase the share of renewable energy in final energy supply and are one of essential technologies for the nearly zero-energy buildings (nZEB), new build and refurbished. In the article (a) an experimental semitransparent BIPV glazed façade structure with 60% of PV cell coverage is shown; (b) energy efficiency indicators were developed based on identified impact parameters using experimental data; and (c) multi-parametric models of electricity generation, preheating of air for space ventilation, and dynamic thermal insulation features that enable prediction of solar energy utilization in different climate conditions are shown. The modeled efficiency of electricity production of BIPV was in the range between 8% and 9.5% at daily solar radiation above 1500 Wh/day, while low impact of outdoor air temperature and ventilation air flow rate on PV cell cooling was noticed. Between 35% and 75% of daily solar radiation can be utilized by preheating the air for space ventilation, and 4.5% to 7.5% of daily solar radiation can be utilized in the form of heat gains through opaque envelope walls.

show abstract

“…Generally, BIPV components without rear ventilated PV modules have a lower efficiency than conventional PV modules [26,28] due to higher cell temperatures [29]. Shadowing effects of BIPV by unsuitable building or facade geometries, building parts, surrounding buildings and vegetation have negative impacts on the efficiency and conflict with an optimal planning of BIPV installations.…”

Section: Building Integrated Photovoltaics From a Technical And Formamentioning

confidence: 99%

Integration of Photovoltaics in Buildings—Support Policies Addressing Technical and Formal Aspects

Schuetze

2013

Energies

View full text Add to dashboard Cite

Abstract:The integration of photovoltaic (PV) generators in the envelope of a building by means of building-integrated photovoltaics (BIPV) offers an immense potential, both in market development and the production of renewable electric energy that is close to the point of electricity consumption. In Germany, for example, by integrating photovoltaics in buildings up to 50% of the electricity demand can be covered. The political support of BIPV would contribute to the development and installation of BIPV components and therefore also promote the development of new business areas for industries dealing with components used in building envelopes and photovoltaic generators. BIPV can be separated into three different integration types: "technical", "formal" and "technical & formal". Political instruments for the support of PV-installations, particularly BIPV are discussed in this paper using Germany and France as examples. Due to successful financial support policies, PV became the most powerful electricity production technology in Germany. In France, the unique financial support of BIPV is resulting in an exemplary development and growth of certified BIPV components available on the market and, from a technical, aesthetic architectural and legal certainty point of view, facilitating the easy and widespread integration of photovoltaic generators in buildings.

show abstract

Energy Saving Evaluation of the Ventilated BIPV Walls

Cited by 10 publications

References 10 publications

Experimental and numerical studies on the thermal performance of ventilated BIPV curtain walls

Experimental and numerical studies on the thermal performance of ventilated BIPV curtain walls

Experimental Study on Energy Efficiency of Multi-Functional BIPV Glazed Façade Structure during Heating Season

Integration of Photovoltaics in Buildings—Support Policies Addressing Technical and Formal Aspects

Contact Info

Product

Resources

About