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

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2772 ◽  
Author(s):  
Suzana Domjan ◽  
Lenart Petek ◽  
Ciril Arkar ◽  
Sašo Medved
Keyword(s):  
Energy Efficiency ◽  
Solar Radiation ◽  
Parametric Models ◽  
Energy Utilization ◽  
Electricity Production ◽  
Climate Conditions ◽  
Building Integrated Photovoltaics ◽  
Solar Energy Utilization ◽  
Pv Cell ◽  
Glazed Facade

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.

scholarly journals New Developments of Solar Energy Utilization in the Aspect of EU Directives

2017 ◽  
Vol 21 (2) ◽  
pp. 15-24 ◽  
Author(s):  
Jan Barwicki ◽  
Maciej Kuboń ◽  
Andrzej Marczuk
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Fossil Fuels ◽  
Energy Resource ◽  
Energy Utilization ◽  
New Production ◽  
New Developments ◽  
Solar Systems ◽  
Solar Energy Harvesting ◽  
Solar Energy Utilization

AbstractPhotovoltaic systems are very efficient concerning proper utilization of solar radiation. However, the nanotechnology solution can replace the photovoltaic by the use of new production technology to lower the price of solar cells to one tenth. Sun provides nearly unlimited energy resource, but existing solar energy harvesting technologies are quite expensive and cannot compete with fossil fuels. The central part of Poland, which represents about 50 percent of the area, gives solar radiation at the level of 1000 kWh·m−2/year. Other new developments, which can help improve existing efficiency of solar systems are: diatoms utilization, artificial photosynthesis, nanoleaves and rotation solar towers.

Optical Waveguide System for Solar Energy Utilization in Space

Solar Energy ◽  
2002 ◽  
Author(s):  
T. Nakamura ◽  
J. A. Case ◽  
C. L. Senior ◽  
D. A. Jack ◽  
J. L. Cuello
Keyword(s):  
Material Processing ◽  
Solar Radiation ◽  
Solar Energy ◽  
Transmission Line ◽  
Optical Waveguide ◽  
Energy Utilization ◽  
Physical Sciences ◽  
Lunar Material ◽  
Solar Energy Utilization ◽  
Waveguide System

In the past 10 years, Physical Sciences Inc. has been developing the Optical Waveguide (OW) System for solar energy utilization. In this system, solar radiation is collected by the concentrator which transfers the concentrated solar radiation to the OW transmission line. The OW transmission line transports the solar radiation to the location of solar energy utilization. Applications of this system include: material processing and plant lighting in space as well as power generation. In this paper we present a review of our work conducted during the last 10 years on the lunar material processing and space-based plant growing.

scholarly journals Surface Diffuse Solar Radiation Determined by Reanalysis and Satellite over East Asia: Evaluation and Comparison

2020 ◽  
Vol 12 (9) ◽  
pp. 1387
Author(s):  
Hou Jiang ◽  
Yaping Yang ◽  
Hongzhi Wang ◽  
Yongqing Bai ◽  
Yan Bai
Keyword(s):  
Solar Radiation ◽  
East Asia ◽  
Regional Scale ◽  
Energy Utilization ◽  
Mean Bias Error ◽  
Bias Error ◽  
China Meteorological Administration ◽  
Diffuse Solar Radiation ◽  
Weather Forecasts ◽  
Solar Energy Utilization

Recently, surface diffuse solar radiation (Rdif) has been attracting a growing interest in view of its function in improving plant productivity, thus promoting global carbon uptake, and its impacts on solar energy utilization. To date, very few radiation products provide estimates of Rdif, and systematic validation and evaluation are even more scare. In this study, Rdif estimates from Reanalysis Fifth Generation (ERA5) of European Center for Medium-Range Weather Forecasts and satellite-based retrieval (called JiEA) are evaluated over East Asia using ground measurements at 39 stations from World Radiation Data Center (WRDC) and China Meteorological Administration (CMA). The results show that JiEA agrees well with measurements, while ERA5 underestimates Rdif significantly. Both datasets perform better at monthly mean scale than at daily mean and hourly scale. The mean bias error and root-mean-square error of daily mean estimates are −1.21 W/m2 and 20.06 W/m2 for JiEA and −17.18 W/m2 and 32.42 W/m2 for ERA5, respectively. Regardless of over- or underestimation, correlations of estimated time series of ERA5 and JiEA show high similarity. JiEA reveals a slight decreasing trend at regional scale, but ERA5 shows no significant trend, and neither of them reproduces temporal variability of ground measurements. Data accuracy of ERA5 is more robust than JiEA in time but less in space. Latitudinal dependency is noted for ERA5 while not for JiEA. In addition, spatial distributions of Rdif from ERA5 and JiEA show pronounced discrepancy. Neglect of adjacency effects caused by horizontal photon transport is the main cause for Rdif underestimation of ERA5. Spatial analysis calls for improvements to the representation of clouds, aerosols and water vapor for reproducing fine spatial distribution and seasonal variations of Rdif.

scholarly journals Preliminary studies on global solar radiation in Mbalmayo, Cameroon

2009 ◽  
Vol 13 (4) ◽  
pp. 207-211 ◽  
Author(s):  
Louis Akpabio ◽  
Akpan Udoimuk ◽  
Sunday Etuk
Keyword(s):  
Solar Radiation ◽  
Meteorological Parameters ◽  
Meteorological Data ◽  
Global Solar Radiation ◽  
Energy Utilization ◽  
International Institute ◽  
Monthly Data ◽  
Solar Energy Utilization ◽  
Range Of Variation ◽  
Radiation Measurements

This paper presents preliminary studies on the global solar radiation in a horizontal surface along with the prevailing meteorological conditions measured during the period 1999-2001 in Mbalmayo, Cameroon. Hourly, daily, and mean monthly values of global solar radiation and meteorological data were obtained from the International Institute of Tropical Agriculture automatic weather station of Mbalmayo. The data were processed as daily, hourly, sum of 10-day data for 8.00/12.00/16.00/20.00 hours, decadal hourly, decadal daily, and mean monthly data. The highest measured daily, decadal hourly, decadal daily, and mean monthly data for global solar radiation in Mbalmayo was found to be 29.7, 2.76, 21.8, and 20.1 MJm2, respectively. The highest hourly global solar radiation value up to 182.44 MJm2 was observed between March 21-31, 1999. Apart from the global solar radiation measurements, the main observed meteorological parameters were, soil temperature, temperature, wind speed, precipitation, and relative humidity. The results show that there exist seasonal tendencies in the variation of global solar radiation. The range of variation of these radiations and the distribution puts Mbalmayo has a high potential for solar energy utilization.

Sign in / Sign up

Export Citation Format

Share Document