Posts

42)71st Republic Day 2020 highlights| Beating retreat ceremony from Attari-Wagah border on Republic Day

India Republic Day -- India celebrates it is 71st Republic Day right now. On this day in 1950the Constitution of India came into force. The Republic Day paradewhich is considered as the main attraction of the days celebrationwas held along Rajpath. It was a 90-minute function. Brazilian President Jair Bolsonaro was the chief guest on the parade. Before the parade begunPrime Minister Narendra Modi paid tribute at the Countrywide War Memorial and Us president Ram Nath Kovind unfurled the national flag as well as General Manoj Mukund NaravaneChief of the Army PersonnelAdmiral Karambir SinghFundamental of the Naval StaffMarshal Rakesh Kumar Singh BhadauriaChief of the Air Personnel. 5 41 PM WIRD PM Narendra Modi finds Rashtrapati Bhawan for At home reception hosted by means of President Ram Nath Kovind. 5 12 pm WIRD Beating retreat ceremony at Attari-Wagah border on Republic Day. 4 36 evening IST Air India Redirects 30000 National Flags To Passengers On Republic Day The national
Post a Comment
Read more

Renewable energy

None World electricity generation by source in 2017. Total generation was 26 PWh. Renewable energy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, including carbon neutral sources like sunlight, wind, rain, tides, waves, and geothermal heat. The term often also encompasses biomass as well, whose carbon neutral status is under debate. Renewable energy often provides energy in four important areas: electricity generation, air and water heating/cooling, transportation, and rural (off-grid) energy services. Based on REN21's 2017 report, renewables contributed 19.3% to humans' global energy consumption and 24.5% to their generation of electricity in 2015 and 2016, respectively. This energy consumption is divided as 8.9% coming from traditional biomass, 4.2% as heat energy (modern biomass, geothermal and solar heat), 3.9% from hydroelectricity and the remaining 2.2% is electricity from wind, solar, geothermal, and other
Post a Comment
Read more

Overview

Image
Renewable energy flows involve natural phenomena such as sunlight, wind, tides, plant growth, and geothermal heat, as the International Energy Agency explains: Renewable energy is derived from natural processes that are replenished constantly. In its various forms, it derives directly from the sun, or from heat generated deep within the earth. Included in the definition is electricity and heat generated from solar, wind, ocean, hydropower, biomass, geothermal resources, and biofuels and hydrogen derived from renewable resources. Renewable energy resources and significant opportunities for energy efficiency exist over wide geographical areas, in contrast to other energy sources, which are concentrated in a limited number of countries. Rapid deployment of renewable energy and energy efficiency, and technological diversification of energy sources, would result in significant energy security and economic benefits. It would also reduce environmental pollution such as air pollution caused by
Post a Comment
Read more

History

Image
Prior to the development of coal in the mid 19th century, nearly all energy used was renewable. Almost without a doubt the oldest known use of renewable energy, in the form of traditional biomass to fuel fires, dates from more than a million years ago. Use of biomass for fire did not become commonplace until many hundreds of thousands of years later. Probably the second oldest usage of renewable energy is harnessing the wind in order to drive ships over water. This practice can be traced back some 7000 years, to ships in the Persian Gulf and on the Nile. From hot springs, geothermal energy has been used for bathing since Paleolithic times and for space heating since ancient Roman times. Moving into the time of recorded history, the primary sources of traditional renewable energy were human labor, animal power, water power, wind, in grain crushing windmills, and firewood, a traditional biomass. In the 1860s and 1870s there were already fears that civilization would run out of fossil fue
Post a Comment
Read more

Mainstream technologies

Image
Wind power At the end of 2019, worldwide installed wind power capacity was 623 GW. Air flow can be used to run wind turbines. Modern utility-scale wind turbines range from around 600 kW to 9 MW of rated power. The power available from the wind is a function of the cube of the wind speed, so as wind speed increases, power output increases up to the maximum output for the particular turbine. Areas where winds are stronger and more constant, such as offshore and high-altitude sites, are preferred locations for wind farms. Typically, full load hours of wind turbines vary between 16 and 57 percent annually, but might be higher in particularly favorable offshore sites. Wind-generated electricity met nearly 4% of global electricity demand in 2015, with nearly 63 GW of new wind power capacity installed. Wind energy was the leading source of new capacity in Europe, the US and Canada, and the second largest in China. In Denmark, wind energy met more than 40% of its electricity demand while Irela
Post a Comment
Read more

Integration into the energy system

Image
Renewable energy production from some sources such as wind and solar is more variable and more geographically spread than technology based on fossil fuels and nuclear. While integrating it into the wider energy system is feasible, it does lead to some additional challenges. In order for the energy system to remain stable, a set of measurements can be taken. Implementation of energy storage, using a wide variety of renewable energy technologies, and implementing a smart grid in which energy is automatically used at the moment it is produced can reduce risks and costs of renewable energy implementation. In some locations, individual households can opt to purchase renewable energy through a consumer green energy program. Electrical energy storage Electrical energy storage is a collection of methods used to store electrical energy. Electrical energy is stored during times when production (especially from intermittent sources such as wind power, tidal power, solar power) exceeds consumption
Post a Comment
Read more

Market and industry trends

Image
Renewable power has been more effective in creating jobs than coal or oil in the United States. In 2016, employment in the sector increased 6 percent in the United States, causing employment in the non-renewable energy sector to decrease 18 percent. Worldwide, renewables employ about 8.1 million as of 2016. Growth of renewables From the end of 2004, worldwide renewable energy capacity grew at rates of 10–60% annually for many technologies. In 2015 global investment in renewables rose 5% to $285.9 billion, breaking the previous record of $278.5 billion in 2011. 2015 was also the first year that saw renewables, excluding large hydro, account for the majority of all new power capacity (134 GW, making up 54% of the total). citation needed Of the renewables total, wind accounted for 72 GW and solar photovoltaics 56 GW; both record-breaking numbers and sharply up from 2014 figures (49 GW and 45 GW respectively). In financial terms, solar made up 56% of total new investment and wind accounte
Post a Comment
Read more