RSS SubjectsBlogs about "Efficiency"


Higher Efficiency Gasoline Engine
2012-05-23 17:00:00
One of the most tangible ways to help solve the looming energy crisis is to focus on reducing consumption. Delphi, a major automotive parts supplier, has been conducting research aimed at just that - reducing fuel consumption via more efficient engines. (Delphi's test engine. Credit: Technolo
Boeing's Engine Fan Upgrade Maximizes Efficiency
2012-05-23 15:26:00
From Design News:: Boeing continues to tweak the design of its 737 Max to add fuel efficiency to the next-generation jetliner with a change in the size of fan on the plane's CFM LEAP-1B engine. Read the whole article
Researchers Tout Efficiency Breakthrough with New 'inexact' Chip
2012-05-19 21:42:00
From Engadget: Accuracy is generally an important consideration in computer chips, but a team of researchers led by Rice University are touting a new "inexact" chip (dubbed PCMOS) that they say could lead to as much as a fifteen-fold increase in efficiency. Read the whole article
Natural Gas vs. Gasoline: Reduced Efficiency?
2012-05-14 17:51:00
Hello folks! Well, it's been a while since I pestered anyone here, so I though it was about time once again ;o) As most will know, the mantra which is recited in any simple SI engine NG conversion is that "efficiency is reduced" during the switchover. So, here comes the question: If you burn 100KB
Better Fuel Efficiency Through a Better Oil Pump
2012-05-10 19:34:00
From As the market and government regulations push automakers to improve emissions and fuel consumption, they are evaluating all opportunities in the engine system to reduce losses. The oil pump is one important component that consumes engine power as it protects engine compone
Effect Of Generator Frequency On Generator Efficiency And Voltage Output
2012-05-09 12:23:00
What is the effect of generator frequency on generator efficiency and voltage output. Generator is synchronous type and frequency has decreased to 49 Hz from 50 Hz. Does it has any impact on generation ????
How Can I Calculate the Efficiency of My HVAC System?
2012-05-05 12:51:00
How can i calculate the efficiency of my HVAC system (2 x 72 Tons, In each set of system we have 6 scroll compressor, and for running this HVAC we have 2 condenser pumps motor (10HP) & 2 chiller condenser pump motor (7.5HP) and one cooling tower fan motor 7.5 HP)? Kindly give us your best guide
How Using Dummy Load When Testing Can Affect Efficiency Of VR
2012-04-25 14:33:00
Dear forum, Please share your knowledge or experience, how using a dummy load when doing a test (SAT) to a VR (voltage regulator) can affect to its efficiency, and how much the difference in result (average) compare to when it is tested using actual load. We are using a VR which in its data sheet
Fuel for Furnace + Efficiency Increase
2012-04-24 04:10:00
Currently I am using Furnace Oil ( Heavy fuel oil -10,000 kcal/kg) for heating the oven. it has got 2 disadvantages : 1. the viscosity is more and so the throughput is more and thus more consumption 2. clogging of the nozzles and thus this required frequent maintenance. can some1 suggest me alter
Save Over 40% on a Sunforce 39810 80-Watt High-Efficiency Polycrystalline S
2012-04-16 09:00:00
List Price: $699.99Deal Price: $399.95You Save: $300.04 (43%)The Sunforce 39810 80-Watt High-Efficiency Polycrystalline Solar Panel Module provides the power you need, while helping you save money and protect the environment. This panel is ideal for homes, cabins, remote power, back-up power, and 12-Volt battery charging. This panel comes with compatible wiring, accessories and a voltage tester to help you start producing up to 80 Watts of clean, free power in all weather conditions.Expires May 2, 2012
Efficiency of Solar Reflector/Generator
2012-04-02 03:38:00
I am considering converting an old 10 ft diameter solid dish into a reflector, with the focal point converging on a NH3 turbine.The surface area is 78 square feet.Any idea what the solar energy is per square foot at 36 degrees north? I am guessing around 2000 BTU's per day/ft..What kind of efficienc
Find Efficiency of Motor
2012-03-23 11:28:00
Water is pumped out of a well 10m deep by means of a pump rated at 10KW.Find the efficiency of the motor of 4200 kg of water is pumped out every minute.given g=10 m/s squqre
Efficiency Calculation by ASME PTC 4 method
2012-02-29 04:25:00
How we can calculate efficiency by ASME PTC- 4 method
Efficiency Calculation
2012-02-28 04:23:00
dear all goodmorning why intermediate press. turbine have much efficiency compair to high, low pressure turbine
Gas Compression & Combustion Efficiency
2012-02-23 15:00:00
Esteemed CR4'ers, I like to understand physical phenomena in an intuitive way, to truly get the underlying explanation of why things happen the way they do. Here's one I haven't quite figured out yet: Why does a higher compression ratio in an engine produce better efficiency? In other terms, if I
Motor Efficiency
2012-02-20 12:41:00
i am doing evaluation on induction motor (without drive) efficiency base don application processes.i need experts ideas on how to evaluate especially based on application process. so far i have found terminal voltage control is the way to improve efficiency.
Bumpy Nanoparticles Improve the Efficiency of Thin-film Solar Cells
2012-02-19 14:44:00
From Gizmag Emerging Technology Magazine: Researchers from Australia's Swinburne University of Technology have announced the development of the world's most efficient broadband nanoplasmonic solar cells. The scientists improved the performance of existing thin-film cells by incorporating
Transformer - Maximum Efficiency
2012-02-19 12:06:00
is it possible for a transformer to get maximum efficiency when working under more than the rated load with the same power factor...?
Efficiency of Induction Motor
2012-02-11 06:10:00
Which parameters can vary at induction motor terminal to increase its efficiency.
Free Energy Efficiency Kit for Sempra energy customers
2012-01-30 21:45:00 This Freè? Stuff ?Tìmès . ©om feed should only be read in feed readers, on the ¥¥©Freestuff Timesemail list, or the ??FST Google Gadget.?©? Any other use is copyright infringe ? ment and should be reported.?© ©¥??
Heat Pump Efficiency in Minneapolis, MN
2012-01-26 16:18:00
All the time I have people asking me about heat pumps. I usually discourage them in my region as not being cost effective (my clientele are rarely in the top 10% of earners). I believe most of the hype comes from the merchants and the government agencies who are too often swayed without really stud
VFD & Energy Saving-3: Efficiency of a VFD
2012-01-19 19:19:00
Dear all,I have a confusion related to the efficiency of a Frequency drive (ABB ACS 800).The manufacturer says that its efficiency is 98 % but the approach I am using to find the efficiency is as System Description: 6.3 KV comes from the Grid 1. Transformer (Convert 6.3 KV to 690 V and this volta
Adiabatic Efficiency of Pneumatic Compressors
2012-01-12 11:32:00
What is adiabatic efficiency of pneumatic compressors? How to measure it?
Efficiency Curve of Centrifugal Pumps for Different Specific Gravity Liquid
2012-01-11 06:49:00
For same flow conditions, is efficiency curve od centrifugal pump varies with specifica gravity? Since Centrifugal pumps are constant head machines, the Capacity-Flow curve would be same for different Specific Gravity liquids. Waht about efficiency curve. Will it be same for different liquids of di
29% Off a Sunforce 80-Watt High-Efficiency Polycrystalline Solar Panel
2012-01-09 09:00:00
List Price: $699.99Deal Price: $499.95You Save: $200.04 (29%)The Sunforce 39810 80-Watt High-Efficiency Polycrystalline Solar Panel Module provides the power you need, while helping you save money and protect the environment. This panel is ideal for homes, cabins, remote power, back-up power, and 12-Volt battery charging. This panel comes with compatible wiring, accessories and a voltage tester to help you start producing up to 80 watts of clean, free power in all weather conditions.Expires Jan 25, 2012
Combined Cycle Efficiency (or heat rate) According to Ambient Temperature
2012-01-04 06:25:00
If possible, I hope to know the reason why the efficiency(or heat rate) of Combined cycle gas turbine power plant is the highest(or lowest in the heat rate) in ISO temperature 59 F, 15℃ and why it becomes lower(or higher in the heat rate) at higher temperature. I would very much more appreciat
Free Cybersecurity, Storage Efficiency, and Exadata For Dummies Books
2011-12-29 13:33:00 -Agency name required for all 3 Free Stuff Times . C om feed should only be reâd in feed readers, on the ©Freètuff Times ©e mail list, or the © FST Google Gadget. Any other| use| is |©opyright infringement and should be reported.©©©
Scientists Create First Solar Cell With Over 100% Quantum Efficiency
2011-12-19 16:49:00
From Engadget: Researchers over at the National Renewable Energy Lab have reportedly made the first solar cell with an external quantum efficiency over 100 percent. Quantum efficiency relates to the number of electrons-per-second flowing in a solar cell circuit, divided by the number of
Efficiency and Performance of an AC Unit
2011-12-19 13:54:00
Dear All As a requirement for choosing an effient airconditioning type/ model I usually review the COP and EER along with the electrical requirement of the unit. Obviously nowadays we are dealing with inverter types, however I would like to ask you what further parameters one should note in order t
Reactive Lighting Brings Safety, Efficiency, And The WOW Factor To Your Sta
2011-12-06 20:45:00
Traditional staircase lighting fails to impress functionally.  Even when lit with a fancy chandelier from an arched ceiling, which basement and attic stairs seldom deserve, the light cast may not be the safest.  But the Web's famous gadget hacker from Manitoba, Canada, Alan Parekh, has developed a complete kit for safe, energy-efficient, and versatile LED stair lighting that can express your individual style as well.
Efficiency of Steam Turbine With and Without Extractions?
2011-12-04 07:23:00
I want to know the effects of extraction on efficiency of steam turbine. How much will be the difference in efficiency of steam turbine if we run the turbine with extractions and without extractions?
Recovery Efficiency of AC Recovery Machine
2011-11-16 14:50:00
Does any one know the method of how to measure the recovery efficieny of AC Recovery machine that is used to recovery and recharge refrigerant gas (R134 A) from the car ac system. Regards Vijay
Reciprocating vs Centrifugal Compressor Efficiency
2011-11-16 05:14:00
i'm looking for the comparison between reciprocating and centrifugal compressor efficiencies. The efficiency which i got from specification sheets is for reciprocating is volumetric efficiency and for centrifugal compressor is adiabatic and polytropic. I want to know about overall efficiency of bo
Free Energy Efficiency Kit for Duke Energy customers
2011-11-16 02:03:00 -it includes: a Compact fluorescent lightbulb, Low flow showerhead, Night light, Faucet aerators, Water flow meter bag, Glow ring toy, hot water gauge card, teflon tape, and a booklet -OH, NC, and SC only ¥This Freè? Stuff ?Tìmès . ©om feed should only be read in feed readers, on the ¥¥©Freestuff Timesemail list, or ...
Solar Efficiency Mapping for Roofs
2011-10-27 19:58:00
= Solar Efficiency Mapping for Roofs = (Image Credit: University of Gothenburg) Solar cells are being more commonly utilized in both commercial and industrial structures as a means to reduce energy costs. However, not all buildings in a site are created equal in terms of solar panel suitabil
13th Based on energy efficiency.
2011-07-01 10:41:00
19th Put the Fun in the list. But take a look at the latest technologies and ideas to develop. Want to make a dramatic statement about architecture? Children's pool, a slide and a few children. The draft pool is accessible for the entire look and try what you can do really ... Further information is good for read:7th Do you know what you want. Interview several candidates and refer to the philosophy of their building. In temperate climates, where there are never too hot... These are products based on water-based solvents or products. Think about what best meets your needs. Surfaces must be free of pollution, contamination, foreign material, biological, salt, plaster, etc.... adapt in this way, based on the pool Toronto. Adapt in this way, based on the pool Toronto. He has also created a beautiful landscape around the pool and...
What is a Gasoline Engine Driven Generator's Average Efficiency?
2011-01-20 23:49:00
what is the average efficiency of a modern 4 cycle gasoline engine driven generator. For example a 10KW rated gen-set. If I were to put 1 BTU equivalent of gasoline into the tank, waste 60%-80% of that through mechanical and heat loss in the engine, and then spin the generator with the remaining, wh
European OEMs in the Dark About New Motor Efficiency Laws
2011-01-19 14:30:00
Up to a third of Europe's OEMs are in danger of being left behind when looming regulation takes effect. According to The Manufacturer, nearly a third of OEMs are unaware that legislation mandating minimum motor efficiency levels will go into effect all throughout the EU starting in June 2011.
Analysis: EPA’s proposed fuel efficiency notification change leaves much
2010-09-10 03:40:00
The US EPA needs to reassess its proposed changes to fuel-efficiency stickers.
Facebook tips for more efficiency and ?fun?
2010-08-09 12:54:00
Since there are more than 500 million users at Facebook, that social network is the place to be meet most your friends. The last years the whole Internet is becoming more social and most new or existing services are providing social features which connect them to social sites like Facebook or Twitter. This article is ...
Notebook and other small devices? power supply efficiency
2010-04-15 15:53:00
Green IT is a big topic, that’s why more and more computer power supplies get a 80 PLUS label for showing off their superior efficiency. But if you every decide to run a Intel Atom based PC, use a PicoPSU, just power your notebook or charge your phone, you won’t really find out how efficient the power ...
Lamborghini?s future to include less weight, more efficiency, no force indu
2010-03-30 11:10:00
Times are changing pretty fast for a lot of carmakers, and tougher standards and regulations require more research into less exciting areas than some car fans might like. Lamborghini is no exception, as the flamboyant Italian supercar manufacturer has started taking measures to reduce its CO2 emissions and to cut back on weight. Now, being asked ...Post published on Rpmgo.comLamborghini’s future to include less weight, more efficiency, no force induction and no manualsRelated posts:Lamborghini will decrease weight rather than increase power in its future models The horse power race has been going on for...Lamborghini wants to develop a material stronger than carbon fiber Nowadays, carbon fiber is one of the best materials...Volvo C30 Efficiency takes only 4.5 l/100 km Volvo announced that it will be introducing a series...
Portland Eco-Districts, OLED Lighting, Efficiency First, + Sustainable Path
2009-09-19 11:00:00
The green case for city living.  Sustainable cities are the solution. A major price drop for solar panels. Panels of OLED lights fascinate designers. Interest in sustainable buidling grows. Portland establishes eco-districts to reduce GHGs. New green buildings put efficiency and environment first. The two different paths toward sustainability. Off-the-grid and self-reliant new homesteaders. The business of sustainability. Congratulations to Ben and Aaron for each winning a copy of the Earth DVD in our recent contest.  Also, follow @jetsongreen on Twitter for more news, links, and commentary.
New Gasoline-Diesel Mixture to Raise Efficiency and Lower Emissions without
2009-09-17 03:59:00
Both gasoline engines and diesel engines have their advantages over the other when it comes to certain applications.  However, they both also suffer from drawbacks that some people find too difficult to live with.  This may all change though, as a new gasoline-diesel mixture is being researched and tested that promises to bring the best of both worlds into the hands of the consumer.
Carbon Nanotubes Used to Build a Near-Ideal Efficiency Solar Cell
2009-09-15 16:16:00
From Gizmag Emerging Technology Magazine: Today's photovoltaic technology, while certainly promising, offers very poor efficiency because of inherent issues in its working mechanism. Using carbon nanotubes, however, Cornell University researchers now hope to lead the way to the nex
Prius 6-Door Limo Goes To Great Lengths For Hybrid Efficiency
2009-09-07 02:00:00
Coming after the innovative yet outrageous Prius Hearse, the Prius Limo stretches the concept of hybrid efficiency to new heights... or should we say, lengths.
Increasing the Efficiency of an Old Boiler
2009-09-04 15:38:00
Problem: I have a boiler that I use to circulate an antifreeze mixture through tubing that is in the concrete of my car wash bay floors. This boiler is 20+ years old and not nearly as efficient as it could be. During the harsh winter months here in Michigan, I see an increase of around $2500/month i
Tetris players found to have greater brain efficiency, thicker cortex and b
2009-09-02 23:05:00
From Engadget: You just knew all that Tetris playing you did as a kid yesterday was good for you, huh? A new study published by the big thinkers at Mind Research Network has found that "practicing Tetris" can actually improve brain efficiency and lead to a thicker cortex in other a
From speed comes efficiency?
2009-08-26 23:06:00
The annual Isle of Man TT Has spawned a new class This year, the Manx government added a futuristic new event to the June race schedule. The TTXGP, for "Tourist Trophy eXtreme Grand Prix," was billed as the first zero-emissions motorcycle race. All of us here know that there is no such
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