Metals with Low Coefficient of Thermal Expansion
2009-09-14 16:18:00 I'm conducting an experiment that involves optics and need to select a substrate, metal perhaps, that will be machined to a precise reflective surface (visible spectrum). I would like something that can be machined on a CNC Lathe, takes a good surface finish and, most important, does not ha
Proper Insultation for Solar Thermal Manifold
2009-09-11 17:56:00 Hello All, This is only my second time addressing this forum folks after having been a clinging wallflower for a couple of years. Well, hopefully someone here will be able to answer a question that I have concerned with the proper selection of insulation materials for use i
Best Insultation for Solar Thermal Manifold
2009-09-11 17:56:00 Hello All, This is only my second time addressing this forum folks after having been a clinging wallflower for a couple of years. Well, hopefully someone here will be able to answer a question that I have concerned with the proper selection of insulation materials f
Where I can get the Price list of the Thermal power plant Equipments?
2009-08-29 12:29:00 I am doing a project for CWA, in which 1000 MW coal based thermal plant equipments cost is required. And to install a 1000 MW plant how can the turbine, boiler,transformer,etc. ratings are decided?
Minnesota Organic Farmer Uses Thermal Banking to Increase Farm Output, Sust
2009-08-07 13:00:00 Reporting from the field: These past few days we’ve been spending time in Oak Center, Minnesota (located about 25 miles north of Rochester), with a really great organic farmer, Steven Schwen, of Earthen Path Organic Farm. Challenged by the cold Midwest winters, Steven pondered how to warm up his planting beds. What evolved was a ...
What is the Best Thermal Lightweight Insulating Concrete or Grout Mix Desig
2009-08-04 00:49:00 What I am looking for is the most available thermal lightweight insulating concrete or grout mixture typically available in the U.S. This concrete or grout mixture will be used soon in the fire testing of a wall assembly that measures only 2-inches (50mm) thick. The wall test panel assembly will mea
Differential Thermal Expansion of Fixed Tube Sheet Exchanger
2009-08-03 19:35:00 I have rectangular fixed tube sheet heat exchanger to design. I have operating temperature on tube sides and shell sides as 180 & 160 degree centigrade . Operating medium on tube side is steam & acquous lithium bromide on shell side. The design pressures on tube side & shell side are
Thermal Expansion Valves and Pressure Control Instead of Temperature Contro
2009-07-29 10:23:00 Hi friends I have two questions: 1. Why would they use a thermal expansion valve at the outlet of a heat exchanger, on the side of the fluid which has gained heat? Where are TXVs usually used at? 2. Where do they usually use pressure control instead of temperature contro i
Radial Thermal Expansion Calculation
2009-07-21 09:44:00 Hello All, For one of our cost Reduction project, i am trying to replace the Treading by Interfernce Fit solution. The Body is Aluminum (A360.0) & the Shaft is SS 316 Tube. For the Requisite torque i have identified the Interference value by doing some manual Calculations. Now i am looking
Brother P-Touch PT-1280 Thermal Label Printer $16.99 at Buy.com - TechBarga
2009-07-15 17:30:00 Brother P-Touch PT-1280 Thermal Label Printer $16.99 at Buy.com Published by TechBargains.com at 10:30 AM - Wed, Jul 15 Compare your Deal
Thermal insulation
2009-06-14 15:21:00 Hi all, currently we are using calcium silicate for insulating steam pipes.Please suggest me the efficient insulating material than calcium silicate so as to reduce insulation thickness Steam temp: 350 deg
Thermal Expansion of Stainless Steel Foil
2009-05-28 18:56:00 Is there any reason why the thermal expansion coefficient of a stainless steel foil (50 μm thick) would be any different, than for the same stainless steel in bulkier form, i.e. 11GA (.1196") SS sheet metal? Would tension (between two spools of the material) have any effect on expansio
Thermal / Acoustic Insulation
2009-05-20 09:48:00 At present we are using rockwool / fibre insulation to provide the necessary thermal protection in our waste heat recovery units but this requires a thickness of around 150mm to reduce the temp from 550 DegC to 60 DegC. We are looking for alternatives that will greatly reduce this thickness but it
Solar thermal power plant
2009-05-16 15:01:00 Hello We would like to build solar thermal power plant of 250 MW size. Can some one plz. tell me reagarding any consultancy firms or Consultants in India which is havin Experitse into this. Or In Any other countries. Abhishek landge
radiator thermal valve in cars
2009-05-09 20:37:00 hello every body i wannn make a revere engineering for apart (radiator thrmal valve in cars) but i don't know how to start, any suggestion???
Thermal Requirements - IEC 60065 and EN 60950-1
2009-05-06 16:25:00 Subject:Thermal Requirements per IEC 60065 and EN 60950-1 Does any body have a general idea about test procedure for thermal characteristics testing in accordance with section 7.0 of IEC 60065 and section 4.5 of EN 60950-1?
Thermal Requirements per IEC 60065 and EN 60950-1
2009-05-04 17:36:00 Does any body have a general idea about test procedure for thermal characteristics testing in accordance with section 7.0 of IEC 60065 and section 4.5 of EN 60950-1?
What's the maximum bearable thermal limit for hot surfaces for human f
2009-04-29 17:58:00 Dear Readers, Subject: What's the maximum bearable thermal limit for hot surfaces for human fingers/body? Does any body know the temperature limit for the external touchable hot surfaces of enclosure allowed by IEC60065 and IEC60950 standards for consumer electrical and electronics devices
Thermal Bridging of Metal Connectors on Sandwich Panel
2009-04-20 14:14:00 I am using "Truss Type Diagonal Ties" on my Sandwich Wall Panel to connect the external layer to the internal layer. The system is simple and fine but there is a question on thermal bridging by the Building Official. There is no issue on the structural calculation but on the "u" value effect that th
Thermal Simulation Software and Refractories
2009-04-15 08:24:00 I am looking for a simulation software to study the variations in temperatures and effects of materials on the refarctories in different zones of a furnace or kiln under defined conditions.
Thermal contact conuctance(TCC) measurement set up
2009-04-12 09:35:00 Hi. I am into the mechanical design of electronic packages for space use. Presently we use empirical TCC values for thermal design purpose. I am planning to find out the exact TCC values for different variables like materials, surface finish, bolting conditions, different filler materials etc.,. Can
Contact Thermal Resistance
2009-03-04 10:41:00 Hi, Does anybody have or know a source for a correct, quantitative, information about thermal resistance (or conductivity) of a contact zone between 2 plane surfaces as function of roughness and applied pressure? In made some estimations but I lack empirical data to validate the es
thermal Insulation
2009-02-25 11:49:00 According to the ASTM std -C591,the temprature limits of the polyisocyanurate (PIR) is '-180°C to 150°C' and why is not suitable above ambient temprature insulation (hot insulation)?
Thermal Break Shear Test
2009-01-22 20:48:00 Any one dealing with fenestration, I have a requirement to implement a shear test on parts used in Thermalbrake fenestration i.e. 2 peices of plastic swedged in between 2 extruded aluminum frames used in manufacturing a windows. The holding force of the plastic to aluminum is 400 lbs. After
Thermal Processing Vs. Solvent-Based Processing
2009-01-18 14:08:00 Labels & Labelling magazine recently gave two life cycle analysis reports, looking at the same products, but showing, oddly enough, different results. The study by the Flint Group found that solvent-based processing is more environmentally friendly than thermal processing. In DuPont's study, it
Generating Electricity from Thermal Energy
2009-01-02 10:28:00 I have a design and imminent product for a home solar energy center, with concentrating solar thermal collectors collecting heat at about 250C and a low-cost thermal storage device, at a cost that can go below 1c/kWh. Details will be ready within two weeks. Now I need a turbine to genera
density correction between draft fans inlet and outlet flow in thermal powe
2008-12-29 05:56:00 is there any softwares or write up for density correction between draft fans inlet and outlet flow in thermal power plants.
Software for Thermal Power Plants
2008-12-29 05:56:00 is there any softwares or write up for density correction between draft fans inlet and outlet flow in thermal power plants.
Experience Sharing "Thermal Sensitivity on Turbo Generator"
2008-12-21 20:16:00 Dear Friends On September 2008, I just finished rewound of GE 237 MVA / 15 kV / 3000 RPM Generator. Vibration after rewound rotor is normal, and site balancing correction was performed to reduce the vibration, normal standard after rotor has been finished rewound its must be overspeed to m
Thermal Sensitivity and Turbo Generator
2008-12-21 20:16:00 Dear Friends On September 2008, I just finished rewound of GE 237 MVA / 15 kV / 3000 RPM Generator. Vibration after rewound rotor is normal, and site balancing correction was performed to reduce the vibration, normal standard after rotor has been finished rewound its must be oversp
Thermal Conductivity of Soil
2008-12-17 14:49:00 Soil Thermal conductivity is very important to know when designing a system. I am doing my first ( about 10 tons) and have a question. I see the rule of thumb of one hole per ton at about 200-300ft or a horizontal installation of 400+ foot trench. How do you find the conductivity? Our Agronomist
Thermal Engineering
2008-11-27 10:05:00 Why is pressure justified as an intensive property? Isn't pressure related to the mass?
Thermal Power Plant Components
2008-11-26 08:38:00 What is the function of the gland steam condenser in a steam turbine power plant?
The Build Your Own Thermal Camera for Under $50 Challenge
2008-11-19 14:00:00 This project is a little different than some of my others in that I haven't built this yet, but it's an idea that I think would work - and I will lay out the steps of how to do it. My hope is that I can utilize the talent we have here on CR4 to do this as a group project and get this done long befor
How to calculate effective thermal resistivity??????
2008-11-16 13:19:00 Dear All, I just want to know the method of calculation of effective thermal resistivity which is needed for me to calculate the cable ampacity. I have the software called "Winder" which i'm currently used to calculate Effective TR. But, i just want to know the formulas generally used
Thermal Therapy
2008-11-07 10:00:00 We will stop at nothing to achieve head turning styles. We tug and pull, blow dry, straighten and curl, burning hair?s essential moisture away. Because of our busy life styles, we opt for using the highest heat our tools are capable of to get the job done. To help reverse the heat wave of torture ...
Shunting a thermal overload relay?
2008-10-30 03:01:00 I looked around the web and need your help-- I have a compressor motor that trips its overloads every morning(I just started and have been told this). They reset the O/L relay and it runs the rest of the day just fine, this has been going on for years!. I haven't been into the MCC yet to visit
Thermal Conductivity and Retention
2008-10-14 22:30:00 I suspect I'll require a gel type substance to create a thermal storage encapsulated by concrete. I'm needing to store heat collected during the spring / summer / fall plus what maybe had in winter to provide a thermal mass then extract the stored heat for domestic hot water and radiant heating
thermal imaging camera
2008-10-12 10:22:00 i m working under the project i.e"using thermal imaging camera to detect explosives"i need some guidience on it , if anyone have a idea on it reply soon.?
US Army Goes Solar: 500 MW Solar Thermal Power Plant to be Built at Fort Ir
2008-10-08 17:19:00 From TreeHugger: Most people probably don't think of the US Army as being on the forefront of the green movement, and while some military vehicles do guzzle gas more quickly than a new recruit learns to say 'sir, yes, sir', the Army is taking steps to reduce its energy usage. In fa
LED thermal problems
2008-09-30 18:28:00 The Microman I need some input on LED Thermal problems and a way to reduce it so the package can be reduced? Also a way to make them easier to retro fit into the present sockets.
Solar Thermal vs. Solar Photovoltaic: Sensible vs. Sexy?
2008-09-25 21:13:00 I made a "compound" parabolic solar cooker for about 30 dollars inclucing the cooking pot. I tested it a few weeks and was disappointed to discover that it only dilivered about 200 watts of heat into the food. (It has almost a meter of collector area) Then I compared it with my 80 dollar 15 watt
3 Phase thermal over load relay is use for single phase ac induction motor.
2008-09-21 14:42:00 I am using a 3phase thermal overload Relay for single phase motor protection this is right selection aither this is not proper selection which type proction use for single phase motor.
Calculating Thermal Expansion for Power Cables
2008-09-18 20:42:00 Did anybody actually calculate thermal expansion for EHV Power cable? Could you refer to any particular book/website?
Thermal efficiency calculation for box type Heater using fuel oil
2008-09-09 14:09:00 I want to know the calculation of thermal efficiency for Fired box type heater which uses fuel oil as the fuel. Is it similar to the thermal efficiency calculation used for fuel gas. What is the basic difference between them? Thanks a lot in advance.
Unit conversion of "Thermal Conductivity" & "Specific He
2008-09-08 11:46:00 Hi kind souls out there, i am facing some difficulty figuring out how to do the unit conversion of 1) Thermal Conductivity of a mat'l from "Watt / meter-degCelsius" to Watt / meter-Kelvin" 2) Specific Heat Capacity from "Joules / gram-degCelsius" to "Joules / kilogram-Kelvin" The difficulty
THERMAL SENSITIVITY ON TURBO ROTOR GENERATOR
2008-09-06 18:11:00 Dear All Could you advise me how to test and calculate the thermal vector due to thermal effect vibration on the turbo generator 3000 RPM, 237.5 MVA, Based on GE paper, I just test for this generator with 2 test step. Step 1. Make a constant field current with vary MW load Step 2
structural+thermal analysis for crucible
2008-09-02 13:10:00 how to analyse a refractory cylinder filled with 30000kg of molten metal. this cylinderical crucible is supported by 14 coloumns(shunts) each having 5 bolts(total 70bolts). i want to know the calculation for refractory expansion and the forces acting on all bolts
Thermal Spray Coatings Workshop
2008-08-18 07:41:00 File : pdf, 7.3 MB, 118 pages TOC WORKSHOP SUMMARY Purpose WORKSHOP AGENDA PRESENTATIONS Introductory Presentations Workshop Presentations DISCUSSION CONCLUSIONS ATTENDANCE LIST Industry Academia PRESENTATION SLIDES NIST Ceramic Coatings Program Process Diagnostics - Diagnostic and Control Sensors for Spray Systems - Holography of droplets and particles - Need for Diagnostics, Sensors and Modeling in Thermal Spray - Diagnostics, Sensing, and Modeling for Plasma Spray Spectroscopy Measurements - EMISSION SPECTRA Thermal Imaging - Temperature Monitoring is Critical to Process ...
some info of jeu thermal uses and underground temp
2008-08-17 21:32:00 some info of jeu thermal uses and underground temp with meters or feet deep on earth i need a power plant working by jeu thermal enrgy with all details of that power plant and it's plas on earht or contry plz at my eamil rrrr_59@hotmail.com |
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