scholarly journals Estimation of energy efficiency in solar photovoltaic panels considering environmental variables

2018 ◽  
Vol 437 ◽  
pp. 012008 ◽  
Author(s):  
R Martinez ◽  
E Forero
Keyword(s):  
Energy Efficiency ◽  
Environmental Variables ◽  
Solar Photovoltaic ◽  
Photovoltaic Panels

Solar Sacrifice: How an Arizona Church Lost Money by Going Solar—and Solutions for When Energy Incentives Fail to Serve the Needs of Nonprofits

2018 ◽  
Vol 2 (1) ◽  
pp. 1-8 ◽  
Author(s):  
David Krantz
Keyword(s):  
Energy Consumption ◽  
Oral History ◽  
Policy Design ◽  
Religious Institutions ◽  
Solar Photovoltaic ◽  
The Sun ◽  
Photovoltaic Panels ◽  
Key Stakeholders ◽  
Oral History Interviews

By policy design, consumers are supposed to save money when they invest in solar energy. This paper presents a case study of what happens when a church goes solar and the finances go wrong. Following the installation of solar-photovoltaic panels, the Arizona church—in the Valley of the Sun, among the sunniest places in the country—decreased its energy consumption, but its electric bills went up. Through oral-history interviews of key stakeholders, the author investigates what happened, and what could be done to prevent other religious institutions and nonprofits from experiencing the church’s fate.

scholarly journals Photovoltaic greenhouses: evaluation of shading effect and its influence on agricultural performances

2014 ◽  
Vol 45 (4) ◽  
pp. 168 ◽  
Author(s):  
Sergio Castellano
Keyword(s):  
Energy Efficiency ◽  
Rural Areas ◽  
Threshold Value ◽  
Plant Production ◽  
Photovoltaic Systems ◽  
Scientific Evaluation ◽  
Shading Effect ◽  
Photovoltaic Panels ◽  
Pv Modules ◽  
San Rafael

During the last years, European government remuneration polices promoted the realisation of photovoltaic systems integrated with the structures instead of on ground photovoltaic (PV) plants. In this context, in rural areas, greenhouses covered with PV modules have been developed. In order to interdict the building of greenhouses with an amount of opaque panels on covering not coherent with the plant production, local laws assigned a threshold value, usually between 25% and 50%, of the projection on the soil of the roof. These ranges seem not to be based on scientific evaluation about the agricultural performances required to the building but only on empirical assessments. Purpose of this paper is to contribute to better understand the effect of different configurations of PV panels on the covering of a monospan duo-pitched roof greenhouse in terms of shading effect and energy efficiency during different periods of the year. At this aim, daylighting and insolation analysis were performed by means of the software Autodesk<sup>®</sup> Ecotect<sup>®</sup> Analysis (Autodesk, Inc., San Rafael, CA, USA) on greenhouse model with different covering ratio of polycrystalline photovoltaic panels on the roof.

scholarly journals Photovoltaic systems – types of installations, materials, monitoring and modeling - review

2020 ◽  
pp. 40-49 ◽  
Author(s):  
Angelika Anduła ◽  
Dariusz Heim
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Residential Buildings ◽  
Future Research ◽  
Photovoltaic Systems ◽  
Zero Energy ◽  
Thermal Systems ◽  
Photovoltaic Panels ◽  
Common Solution

Photovoltaic systems have become a common solution for, both small residential buildings as well as large service buildings. When buildings are being designed, it is important to focus on the aspect of the object’s energy efficiency as lowering the energy consumption of a given facility is crucial. The article discusses the use of photovoltaic panels such as so-called BAPV (Building Applied Photovoltaics) and BIPV (Building Installed Photovoltaics) installations as well as photovoltaic thermal systems (PV/T), which generate both electricity and heat. The role of PV installation in so-called zero energy buildings and proposals for future research and solutions are also discussed.

scholarly journals Cost Optimization of a Zero-Emission Office Building

Buildings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 222
Author(s):  
Nicola Lolli ◽  
Anne Gunnarshaug Lien ◽  
Øystein Rønneseth
Keyword(s):  
Energy Efficiency ◽  
Time Horizon ◽  
Net Present Value ◽  
Electricity Price ◽  
Office Building ◽  
Photovoltaic Panels ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
Zero Emission ◽  
Business As Usual

The cost-effectiveness of energy efficiency measures meant to achieve a zero-emission office building is investigated and compared to business as usual energy efficiency measures. The laboratory for zero emission buildings, the ZEB Lab, located in Trondheim, Norway, is an office building designed and built to compensate its lifecycle emissions with the use of a large array of building-integrated photovoltaic panels, pursuing a zero-emissions ambition level. Three design alternatives are investigated by downgrading the building insulation level to the values recommended by the currently enforced Norwegian building code, the byggteknisk forskrift TEK17. A sensitivity analysis of the variation of the installed area of the photovoltaic panels is performed to evaluate if smaller areas give better cost performances. Net present values are calculated by using three scenarios of future increase of electricity price for a time horizon of 20 years. Results show that business as usual solutions give higher net present values. Optimized areas of the photovoltaic panels further increase the net present values of the business as usual solutions in the highest electricity price scenario. The zero-emission ambition level shows a higher net present value than that of the business as usual solutions for a time horizon of at least 36 years.

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