Carbon counter electrode mesoscopic ambient processed & characterised perovskite for adaptive BIPV fenestration

Aritra Ghosh,Shubhranshu Bhandari,Senthilarasu Sundaram,Tapas K Mallick

doi:10.1016/j.renene.2019.07.119

Aritra Ghosh, Shubhranshu Bhandari + Show 2 more

Open Access

https://doi.org/10.1016/j.renene.2019.07.119

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Journal: Renewable Energy	Publication Date: Jul 26, 2019
Citations: 41	License type: cc-by

Affiliation: University of Exeter

Abstract

In this work, carbon counter electrode perovskite was developed at the laboratory environment and building integrated photovoltaic (BIPV) window application using this material was investigated. At 1 sun (1000 W/m2) continuous incident solar radiation from an indoor simulator, this particular type of perovskite had 8.13% efficiency. Average solar and visible transmittance of this perovskite BIPV window was 30% and 20% respectively. Solar heat gain for different incident angle was evaluated for this perovskite glazing. For the University of Exeter, Penryn (50.16° N, 5.10° W) UK location, solar heat gain coefficient (SHGC) or solar factor (SF) varied from 0.14 to 0.33 at the highest and lowest incident angle respectively. Overall heat transfer coefficient (U-value) of 5.6 W/m2K was realized for this glazing while calculation was performed by window performance analysis programme, WINDOW 6.0. Daylight glare control potential of this glazing was investigated using subjective rating methods and comfortable daylight penetrated through glazing in a typical cloudy condition. Colour properties of this material showed that 20% visible transmittance is threshold limit, and below this value colour or visual comfort using this glazing is not achievable.

Highlights

The building sector accounts for 40% of total energy consumption while emits one-third of the world's global greenhouse gases
Experiment was performed under simulated AM 1.5 solar irradiation at an intensity of 100 mWcmÀ2 measured at room temperature
U-value of this glazing without frame was 5.61 W/m2K. As this device was fully sandwiched and no air gap or any other space was provided between two glass panes, high U-value was achieved. This result was very similar to suspended particle device glazing which showed 5.9 W/m2K U-value when the experiment was performed at an outdoor condition in a temperate climate using test cell [34]

Summary

Introduction

The building sector accounts for 40% of total energy consumption while emits one-third of the world's global greenhouse gases. Traditional transparent single- and double-glazed windows enhance the building energy consumption being the weakest part of a building envelope whilst it brings external sunlight and fresh air into the indoor space. To maintain view and energy loss reduction using a single unit window, semi-transparent and highly insulating are the precondition. BAPV types are the addition of a PV technology into a building, which does not disturb the existing building structure [3] and has no impact on building heat loss or heat gain. BIPV systems are an integral part of a building which replaces the traditional building envelope (e.g. wall, roof, and window). Semi-transparent or transparent type BIPV windows are aesthetic in nature, allow daylight, control solar heat gain, and generates electricity [4]

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