Photon Upconversion in Lanthanide-Activated Inorganic Luminescent Materials

2018 ◽  
pp. 86-116 ◽  
Author(s):  
Anurag Pandey ◽  
Surya Prakash Tiwari ◽  
Viresh Dutta ◽  
Vinod Kumar
Keyword(s):  
Energy Conservation ◽  
Energy Efficient ◽  
Material Selection ◽  
Chemical Durability ◽  
High Signal ◽  
Luminescent Materials ◽  
Lighting Technology ◽  
Novel Synthesis ◽  
Upconversion Mechanism ◽  
Upconversion Process

The growing demand for energy-efficient materials needs advancement in existing approaches. Photon upconversion is an effective way to overcome this issue. Novel upconverting materials show their potential in the advancement of energy conservation and lighting technology. In this contest, lanthanide-activated inorganic luminescent materials play a key role. The unique features of these materials like non-toxic nature, narrow multicolour emissions, long luminescence lifetime, high signal/noise ratio, and good chemical durability make them more promising. In this chapter, an overview of photon upconversion process in various lanthanide doped/codoped materials is given. Introductory idea about upconversion mechanism, criteria of material selection, novel synthesis roots, reports on upconversion-emitting materials, and emergent applications of these materials are presented.

scholarly journals Low enthalpy geothermal energy: borehole heat exchangers (BHE). Geological and geothermal supervision during active construction in support of the energy certification of buildings - ESBE certification plan

2012 ◽  
Author(s):  
Lorenzo Cadrobbi ◽  
Fioroni Daniele ◽  
Alessandro Bozzoli
Keyword(s):  
Energy Conservation ◽  
Heat Exchangers ◽  
Energy Efficient ◽  
Geothermal Energy ◽  
Energy Requirements ◽  
Effective Coverage ◽  
Correct Execution ◽  
Environmental Technologies ◽  
Borehole Heat Exchangers ◽  
Ongoing Monitoring

This article draws on the experience matured while working with low-enthalpy geothermic installations both in the design and executive phase as well as ongoing monitoring, within the scope of energy conservation as it relates to building and construction. The goal is to illustrate the feasibility of adopting the ESBE certification protocol (Certification of Energy Efficient Low-Enthalpy Probes) aimed at optimizing the harnessing of local geothermic resources to satisfy the energy requirements of a building, measured against the initial investment. It is often the case, in fact, that during the course of a construction project for a given low-enthalpy installation, we verify incompa tibilities with the local geologic and geothermic models, which, if inadequate during construction, can compromise the proper functioning of the installation and its subsequent operation. To this end, the ESBE method, which adheres to the governing environmental regulations, and which takes its cue from technical statutes within the sector, permits us to validate via verification, simulations and tests, the geothermic field probes used in construction in an objective and standardized manner, thereby joining and supporting the most recent protocols for energy certification of buildings (LEED 2010, CASACLIMA 2011, UE 20120/31 Directive). ESBE certification operates through a dedicated Certifying Entity represented by the REET unit (Renewable Energies and Environmental Technologies) of FBK (Bruno Kessler Foundation) of Trento. The results obtained by applying the ESBE method to two concrete cases, relative to two complex geothermic systems, demonstrate how this protocol is able to guarantee, beyond the correct execution in the field of geothermic probes, an effective coverage of the energy requirements of the building during construction adopting the best optimization measures for the probes in keeping with the local geological and geothermic model.

scholarly journals Custom, spray coated receive coils for magnetic resonance imaging

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
A. M. Zamarayeva ◽  
K. Gopalan ◽  
J. R. Corea ◽  
M. Z. Liu ◽  
K. Pang ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Silver Nanoparticle ◽  
Material Selection ◽  
Spray Deposition ◽  
Dielectric Materials ◽  
Patient Specific ◽  
High Signal ◽  
Resonance Imaging ◽  
3D Printed

AbstractWe have developed a process for fabricating patient specific Magnetic Resonance Imaging (MRI) Radio-frequency (RF) receive coil arrays using additive manufacturing. Our process involves spray deposition of silver nanoparticle inks and dielectric materials onto 3D printed substrates to form high-quality resonant circuits. In this paper, we describe the material selection and characterization, process optimization, and design and testing of a prototype 4-channel neck array for carotid imaging. We show that sprayed polystyrene can form a low loss dielectric layer in a parallel plate capacitor. We also demonstrate that by using sprayed silver nanoparticle ink as conductive traces, our devices are still dominated by sample noise, rather than material losses. These results are critical for maintaining high Signal-to-Noise-Ratio (SNR) in clinical settings. Finally, our prototype patient specific coil array exhibits higher SNR (5 × in the periphery, 1.4 × in the center) than a commercially available array designed to fit the majority of subjects when tested on our custom neck phantom. 3D printed substrates ensure an optimum fit to complex body parts, improve diagnostic image quality, and enable reproducible placement on subjects.

Opportunities and Challenges in Perovskite LEDs Commercialization

2021 ◽  
Author(s):  
Kai Zhang ◽  
Ningning Zhu ◽  
Mingming Zhang ◽  
Lei Wang ◽  
Jun Xing
Keyword(s):  
Energy Saving ◽  
Energy Efficient ◽  
Light Emitting Diode ◽  
Environment Friendly ◽  
Light Emitting ◽  
Lighting Technology

Recently, the light-emitting diode (LED) has been considered as an energy-saving and environment-friendly lighting technology，which is ten times more energy efficient than conventional incandescent lights. As an emerging photoelectric material,...

scholarly journals Optimization of Energy Efficient Advance Leach Protocol

2021 ◽  
Vol 9 (5) ◽  
pp. 07-16
Author(s):  
Sandeep Kaur ◽  
Dr. Rajeev Bedi ◽  
Mohit Marwaha
Keyword(s):  
Wireless Sensor Networks ◽  
Energy Conservation ◽  
Network Lifetime ◽  
Energy Efficient ◽  
Sensor Node ◽  
Cluster Head ◽  
Base Station ◽  
Wireless Sensor ◽  
Cluster Head Selection ◽  
Leach Protocol

In WSNs, the only source to save life for the node is the battery consumption. During communication with other area nodes or sensing activities consumes a lot of power energy in processing the data and transmitting the collected/selected data to the sink. In wireless sensor networks, energy conservation is directly to the network lifetime and energy plays an important role in the cluster head selection. A new threshold has been formulated for cluster head selection, which is based on remaining energy of the sensor node and the distance from the base station. Proposed approach selects the cluster head nearer to base station having maximum remaining energy than any other sensor node in multi-hop communication. The multi hop approach minimizing the inter cluster communication without effecting the data reliability.

scholarly journals ENERGY‐EFFICIENT ASSET MANAGEMENT FOR PROFESSIONAL LANDLORDS

2008 ◽  
Vol 12 (1) ◽  
pp. 19-34 ◽  
Author(s):  
Jan-Willem Smid ◽  
Nico Nieboer
Keyword(s):  
Energy Conservation ◽  
Asset Management ◽  
Energy Efficient ◽  
Co2 Reduction ◽  
Energy Performance ◽  
Building Stock ◽  
Energy Performance Of Buildings ◽  
New Construction ◽  
A Minor ◽  
Minor Extent

CO2 reduction by means of energy conservation is an important topic in many governmental environmental policies. As new construction accounts for a fraction of the total building stock, the energy performance of existing dwellings is of great importance. Professional landlords can play a major role in energy conservation, but there are indications that the large energy conservation potential in their housing existing stock is only exploited to a minor extent. This paper presents a method to implement the topic energy conservation in the asset management of professional landlords, in order to establish an integration of energy conservation in their maintenance and renovation practice. This method is described in relation to the asset management of Dutch social housing landlords, but may also be useful for other professional landlords. The method takes advantage of the European EPBD (Energy Performance of Buildings Directive). Santrauka CO2 mažinimas taupant energija ‐ svarbi tema dažnoje valstybineje aplinkos apsaugos politikoje. Kadangi naujos statybos sudaro tik maža visu pastatu ištekliu dali, jau pastatytu bûstu energinis naudingumas labai svarbus. Profesionaliu nuomotoju vaidmuo taupant energija gali būti svarbus, tačiau yra ženklu, kad didžiulis ju turimu jau pastatytu būstu energijos taupymo potencialas išnaudojamas nedaug. Šiame darbe pristatomas metodas, kaip energijos taupymo tema itraukti i profesionaliu nuomotoju turto valdyma, kad energijos taupymas taptu ju priežiūros ir renovacijos praktikos dalis. Metodo aprašymas remiasi Olandijos socialinio būsto savininku turto valdymo praktika, bet jis gali būti naudingas ir kitiems profesionaliems nuomotojams. Metodas pagristas Europos EPBD (Direktyva del pastatu energetinio naudingumo).

Application of Green Lighting Technology in Highway Service – A Case Study of Mt. Lushan West Sea Tourism Highway Service

2014 ◽  
Vol 548-549 ◽  
pp. 1815-1819 ◽  
Author(s):  
Xiao Chun Qin ◽  
She Gang Shao ◽  
Yi Shen
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Savings ◽  
Light Guide ◽  
Operating Costs ◽  
Natural Light ◽  
Lighting Technology ◽  
Lighting Systems ◽  
Service Application

Green lighting technology has the advantages of energy efficiency, friendly environment, safety and comfort. Based on the introduction of green lighting technology, taken the Mt. Lushan West Sea tourist highway service as the case study, we analyzed light guide illumination, the optimum use of natural light and energy efficient lighting respectively from the aspects of technical characteristics and the specific highway service application. We finally made the economic analysis in the energy savings of green lights in the highway service, and the result showed that through the use of green lighting systems Mt. Lushan West Sea tourist highway service could save electricity and reduce operating costs 134,700 Yuan per year.

Research on Application and Extension of CL System Based on the Low-Carbon Energy Efficient Building Materials

2012 ◽  
Vol 512-515 ◽  
pp. 2895-2898
Author(s):  
Dong Li Wang ◽  
Tong Li ◽  
Gui Fang Yang
Keyword(s):  
Energy Conservation ◽  
Energy Efficient ◽  
Building Materials ◽  
Low Carbon ◽  
Research On Application ◽  
Low Carbon Energy ◽  
Investigation And Study ◽  
Energy Efficient Building

Qinhuangdao and national other places are the same, the construction energy conservation situation is stern, develops the construction to conserve energy imminently vigorously. Displays the area superiority, promotes the CL structure, to fundamentally does well the construction energy conservation work, to promote the Qinhuangdao urbanization advancement to be imperative. This article through the investigation and study to the Qinhuangdao CL structure Production enterprise, introduced that the energy conservation characteristic of the CL structure, founded the the question which existed in the promotion of the CL structure, searched after the countermeasure exploration speeds up the CL structure promotion work.

scholarly journals Energy Conservation and Efficiency by Energy Efficient Motor in India

2019 ◽  
Vol 9 (1) ◽  
pp. 3917-3926
Keyword(s):  
Energy Consumption ◽  
Energy Conservation ◽  
Greenhouse Gas ◽  
Energy Efficient ◽  
Energy Demand ◽  
Industrial Sector ◽  
Primary Energy ◽  
Primary Energy Consumption ◽  
Ghg Emission ◽  
The Government

Electricity demand in India is increasing at a rapid pace because of growth in Economy, urbanization, infrastructure development and the living standard of people. According to the United Nation’s world population prospects (2017), India’s population is 1.34 billion which will go grow further and surpass China by 2025[1]. According to the IMF, the Indian economy is expected to grow by 7.5% in FY19-20 and 7.7% in FY20-21[2]. Increased population and growth in GDP are associated with increased energy demand. India’s primary energy consumption was 754 Mtoe in 2017 and expected to reach 1928 Mtoe in 2040[3]. Major energy demand is from the Industrial sector which was 51% of total primary energy consumption in 2017 and expected to reach 990 Mtoe, by 2040 [3]. Rising energy demand and dependence on coal-based energy generation capacity, leading to the emission of Green House Gases (GHG). Most of India’s Greenhouse gas emissions are from energy sector having 68.7% contribution in overall greenhouse gas emission. Agriculture, Industrial process land-use change and forestry (LUCF), and waste, contributed 6.0%, 3.8% and 1.9% respectively in overall GHG emission in 2014. [4]. Reducing the GHG emission in India is a major challenge in front of the Government as the Government has to maintain sustainable growth with the contribution in mitigating the effect of climate change. Govt. has pledged to Paris Agreement for the reduction in emission intensity of GDP by 33-35% by 2030 below 2005 level [5]. In the reduction of GHG emission, energy efficiency's contribution is estimated at approx. 51% [6]. The industrial sector can contribute most in reducing GHG emission and contributes to nationally determined contribution. Industry consumes 40%-45% of total energy consumption and motor-driven system consumes 70% [7] of total Industrial energy. Most of the energy in Industries are consumed to run the motor for various purposes and consumes a major chunk of energy which can be reduced to a significant level by replacing the standard motor with energy efficient motor. 90% of the motor in Indian industries are IE1 or below IE1 standard [8] and required replacement. By installing the energy efficient motor, the industry can save huge energy, cost and reduce CO2 emission. Observing the opportunity for energy saving by energy efficient motor, this paper aims to analyze how energy efficient motor is capable of reducing energy consumption, and how it can contribute to energy conservation. Methodology adopted in this paper is secondary research, that answers to questions like; why Industry need energy efficient motor, how energy efficient motor can save energy and increases efficiency, cost-benefit analysis of installing energy efficient motor, barriers to the installation of energy efficient motor and solution to those barriers in migration from the standard motor to energy efficient motor in India.

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