Terrestrial radiative cooling: Using the cold universe as a renewable and sustainable energy source

Science ◽  
2020 ◽  
Vol 370 (6518) ◽  
pp. 786-791
Author(s):  
Xiaobo Yin ◽  
Ronggui Yang ◽  
Gang Tan ◽  
Shanhui Fan
Keyword(s):  
Energy Source ◽  
Energy Efficient ◽  
Solid State Lighting ◽  
Radiative Cooling ◽  
Energy Landscapes ◽  
Photonic Materials ◽  
Energy Technologies ◽  
Recent Advancement ◽  
The Universe ◽  
Renewable And Sustainable Energy

Photonic materials designed at wavelength scales have enabled a range of emerging energy technologies, from solid-state lighting to efficient photovoltaics that have transformed global energy landscapes. Daytime passive radiative cooling materials shed heat from the ground to the cold universe by taking advantage of the terrestrial thermal radiation that is as large as the renewable solar energy. Newly developed photonic materials permit subambient cooling under direct sunshine, and their applications are expanding rapidly enabled by scalable manufacturing. We review here the recent advancement of daytime subambient radiative cooling materials, which allow energy-efficient cooling and are paving the way toward technologies that harvest the coldness from the universe as a new renewable energy source.

Much Ado about (Practically) Nothing

2010 ◽  
Author(s):  
David Fisher
Keyword(s):  
Energy Source ◽  
Atomic Nucleus ◽  
The Sun ◽  
Scientific Journals ◽  
Rare Gases ◽  
Important Work ◽  
The Earth ◽  
Wide Range ◽  
Life On Mars ◽  
The Universe

There are eight columns in the Periodic Table. The eighth column is comprised of the rare gases, so-called because they are the rarest elements on earth. They are also called the inert or noble gases because, like nobility, they do no work. They are colorless, odorless, invisible gases which do not react with anything, and were thought to be unimportant until the early 1960s. Starting in that era, David Fisher has spent roughly fifty years doing research on these gases, publishing nearly a hundred papers in the scientific journals, applying them to problems in geophysics and cosmochemistry, and learning how other scientists have utilized them to change our ideas about the universe, the sun, and our own planet. Much Ado about (Practically) Nothing will cover this spectrum of ideas, interspersed with the author's own work which will serve to introduce each gas and the important work others have done with them. The rare gases have participated in a wide range of scientific advances-even revolutions-but no book has ever recorded the entire story. Fisher will range from the intricacies of the atomic nucleus and the tiniest of elementary particles, the neutrino, to the energy source of the stars; from the age of the earth to its future energies; from life on Mars to cancer here on earth. A whole panoply that has never before been told as an entity.

scholarly journals Introducing GEOFIT: Cost-Effective Enhanced Geothermal Systems for Energy Efficient Building Retrofitting

Proceedings ◽  
2018 ◽  
Vol 2 (15) ◽  
pp. 557 ◽  
Author(s):  
Thomas Messervey ◽  
Marco Calderoni ◽  
Angel Font ◽  
Mikel Borras ◽  
Ray Sterling ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Cost Effective ◽  
Enhanced Geothermal Systems ◽  
Geothermal Systems ◽  
Low Carbon ◽  
Low Carbon Economy ◽  
Energy Technologies ◽  
Executive Agency ◽  
Energy Efficient Building ◽  
Carbon Economy

GEOFIT, “Deployment of novel GEOthermal systems, technologies and tools for energy efficient building retrofitting,” is a recently launched 4-year H2020 project funded by the Innovation and Networks Executive Agency (INEA) under the call topic LCE-17-2017: Easier to install and more efficient geothermal systems for retrofitting buildings. GEOFIT is a part of INEA’s Energy Portfolio Low Carbon Economy (LCE), Renewable Energy Technologies (RET) and brings together 24 partners from 10 European countries to work on the development of novel and smart shallow geothermal systems. This paper introduces the project.

Solid-State Lighting: An Approach to Energy-Efficient Illumination

2016 ◽  
pp. 693-751
Author(s):  
Mariano Perálvarez ◽  
Jorge Higuera ◽  
Wim Hertog ◽  
Óscar Motto ◽  
Josep Carreras
Keyword(s):  
Solid State ◽  
Energy Efficient ◽  
Solid State Lighting

Phosphorescent White OLEDs for Solid-state Lighting

2009 ◽  
Vol 1212 ◽  
Author(s):  
Sean Xia ◽  
Peter Levermore ◽  
Vadim Adamovich ◽  
Chun Lin ◽  
Raymond C. Kwong ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Energy Efficient ◽  
High Efficiency ◽  
Solid State Lighting ◽  
Energy Star ◽  
Lighting Industry ◽  
Partial Energy ◽  
White Oleds ◽  
Color Rendering

AbstractWhite OLEDs (WOLEDTMs) fabricated using energy efficient phosphorescent OLED (PHOLEDTM) technology open up exciting new ways to develop efficient white lighting. WOLEDs have the potential to transform the lighting industry. In this presentation, phosphorescent WOLEDs with high conductivity transport layers will be discussed. White light can be generated by partial energy transfer from blue to green and red. Single WOLED stacks are demonstrated that match the Energy Star® lighting color criteria for 2700K and 3000K with high efficiency (˜80 lm/W) and high color rendering indices (˜80). Both devices had operational lifetimes (LT70%) over 30,000 hours measured from an initial luminance of 1,000 cd/m2. Different techniques to improve optical outcoupling will also be discussed.

Cash for Coolers: Evaluating a Large-Scale Appliance Replacement Program in Mexico

2014 ◽  
Vol 6 (4) ◽  
pp. 207-238 ◽  
Author(s):  
Lucas W. Davis ◽  
Alan Fuchs ◽  
Paul Gertler
Keyword(s):  
Energy Efficient ◽  
Carbon Dioxide Emissions ◽  
Air Conditioning ◽  
Large Scale ◽  
Energy Use ◽  
Electricity Consumption ◽  
Program Cost ◽  
Air Conditioners ◽  
Household Level ◽  
The Universe

This paper evaluates a large-scale appliance replacement program in Mexico that from 2009 to 2012 helped 1.9 million households replace their old refrigerators and air conditioners with energy-efficient models. Using household-level billing records from  the universe of Mexican residential customers, we find that refrigerator replacement reduces electricity consumption by 8 percent, about one-quarter of what was predicted by ex ante analyses. Moreover, we find that air conditioning replacement actually increases electricity consumption. Overall, we find that the program is an expensive way to reduce externalities from energy use, reducing carbon dioxide emissions at a program cost of over $500 per ton. (JEL L68, L94, O12, O13, Q41, Q54)

scholarly journals Design and construction possibilities for photovoltaic integration in envelopes of new and existing buildings

Spatium ◽  
2007 ◽  
pp. 37-43
Author(s):  
Aleksandra Krstic
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Energy Efficient ◽  
Architectural Design ◽  
Integrated Systems ◽  
Existing Buildings ◽  
Solar Systems ◽  
Pv Systems ◽  
Energy Efficient Buildings ◽  
Design And Construction

Sun is the renewable energy source whose usage exerts influence on architectural design. Facade concepts of energy efficient buildings are developed producing new facade structures and components. Photovoltaic systems, as elements of active solar systems are discussed in the paper and particular attention is paid to building integrated systems, as they influence building appearance. Classification and analyzes of PV systems - materials, supporting systems, coatings and design principles are presented in the paper. The purpose of this paper is discussion on design and construction possibilities for PV integration in envelopes of new and existing buildings. Possibilities for structural variability of envelopes with PV integrated systems are described in the paper. .

scholarly journals Energy and Economic Comparison of Different Fuels in Cement Production

2021 ◽  
Author(s):  
Oluwafemi M. Fadayini ◽  
Clement Madu ◽  
Taiwo T. Oshin ◽  
Adekunle A. Obisanya ◽  
Gloria O. Ajiboye ◽  
...  
Keyword(s):  
Energy Source ◽  
Energy Efficient ◽  
Research Work ◽  
Specific Energy Consumption ◽  
Health Impact ◽  
Fuel Oil ◽  
Energy Consuming ◽  
Production Output ◽  
Cement Manufacturing ◽  
Impact Data

Cement clinkerisation is the major energy-consuming process in cement manufacturing due to the high-temperature requirement. In this paper, energy data including specific energy consumption, forms, and types of energy used at different units of cement manufacturing processes were analyzed and compared for effectiveness, availability, cost, environmental, and health impact. Data from three different cement industries in Nigeria labeled as A, B, and C were used for the analysis in this study. The results of this research work established that coal is the cheapest energy source but environmental issues exonerate it from being the choice energy source. LPFO and Natural gas give better production output while minimizing pollution and health issues. When benchmarked against each other, Factory B was found to be the most energy-efficient in terms of output and cost of production. Although coal is cheaper compared to fuel oil and supposed to contribute a share of fuel used in cement industries, the industries are moving towards the use of alternative and conventional fuels to reduce environmental pollution. It is therefore recommended that deliberate effort to achieve appreciable energy-efficient levels should be the priorities of the cement industries in Nigeria.

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