Bird Hospital Needs 100 Watt Incandescent Bulbs Or Good Substitute - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: January 13, 2014, 07:30:16 pm
content: Greetings EEVBees:--Please see link below for an article about how a bird hopital is asking for donations of 100 watt incandescent bulbs, to be used as heaters in boxes where recovering birds are kept.http://www.cbc.ca/news/canada/ottawa/incandescent-bulb-ban-leaves-bird-care-centre-with-dim-hope-1.2492890--Many animal keepers use a bulbs in a box in pet habitats so the animals can take shelter from the cold. These heat boxes often include a large easily refilable container of water to prolong the heating if power goes off and no one is around. Can anyone recommend a safe design using resistors or whatever to substitute for the now illegal bulbs."Does not squirrel crack nuts on bough of oak tree."Lao Fu 1410 1620Best RegardsClear Ether

author: Rerouter
author_rank: Super Contributor
timestamp: January 13, 2014, 07:56:25 pm
content: you could use one of the high wattage heatsinked resistors (there should be plenty in mains voltage rating) and size it so it doesn't get too hot, (roughly a 42 ohm for 100W of heat as apparently a incandescent globe is only 5% efficient so ~95W of heat for a 100W globe,if so this looks ideal as a replacementhttp://www.digikey.com.au/product-detail/en/L225J50RE/L225J50RE-ND/823564as its pissing away 100W it will be hot, and after mains is unplugged it will stay hot (not as long as the water jug, but a good 15 minutes) you would be looking at a surface temperature on the resistor in the ballpark of 140 degrees,This only leaves you with insulating the terminals on it to make the thing safe,

author: AG6QR
author_rank: Frequent Contributor
timestamp: January 13, 2014, 07:58:28 pm
content: Quote from: SgtRock on January 13, 2014, 07:30:16 pmAnything that draws 100W is a 100% efficient 100W heater for all practical purposes. I don't know if 50W incandescents are still available in their jurisdiction, but two 50W bulbs would put out as much heat as one 100W bulb.For 120V, a power resistor of approximately 144 ohms, rated at least 100W (with appropriate heat sink, if needed) would do the trick. Digi-Key shows a number of 150 ohm chassis mount resistors rated at 100 to 200 watts that should fit the bill, but they're all a lot more expensive than a light bulb ($11.30 to $46.58) .But then again, I just searched the web for "100W heater", and found this device, which screws into an edison bulb base. It's probably the simplest solution, considering that they're most likely already set up with infrastructure to handle those 100W bulbs.http://www.amazon.com/Exo-Terra-Ceramic-100-Watt-110-Volt/dp/B0002DIAXOStill a lot more expensive than a bulb, but it probably lasts longer.

author: c4757p
author_rank: Super Contributor
timestamp: January 13, 2014, 08:04:23 pm
content: Quote from: Rerouter on January 13, 2014, 07:56:25 pm42 ohms for 100W? Canada might be a bit odd at times, but they still don't have 65V mains!Quote from: AG6QR on January 13, 2014, 07:58:28 pmNot according to the reviews!

author: mariush
author_rank: Super Contributor
timestamp: January 13, 2014, 08:22:06 pm
content: There are 65-75w halogen lightbulbs which are considered equivalent with 100w lightbulbs.For example:http://www.amazon.com/Philips-409821-EcoVantage-100-Watt-Equivalent/dp/B0078MXJ38/ref=pd_sim_hi_3http://www.amazon.com/Philips-72-Watt-EcoVantage-Natural-Dimmable/dp/B001FA07UC/ref=sr_1_31?ie=UTF8&qid=1389644422&sr=8-31&keywords=halogen+lightbulbsNow I don't know if they heat more or less compared to 100w lightbulbs but they should be close enough.

author: NiHaoMike
author_rank: Super Contributor
timestamp: January 13, 2014, 08:28:48 pm
content: What about heating pads?

author: N2IXK
author_rank: Frequent Contributor
timestamp: January 13, 2014, 08:29:18 pm
content: How about "rough service" 100W bulbs? They weren't covered under the phaseout, and are still available...http://www.amazon.com/Bulbrite-100A-RS-Incandescent-Service/dp/B0030AYFEENo need for any kind of modifications, etc.Of course, if this was just another excuse to bitch about energy efficiency regs.....

author: pickle9000
author_rank: Super Contributor
timestamp: January 13, 2014, 08:33:15 pm
content: I would think the big issue is a base so they can screw into an existing unit.

author: N2IXK
author_rank: Frequent Contributor
timestamp: January 13, 2014, 08:35:53 pm
content: You can get a 100W heater with an Edison screw base, but they cost about $70:http://www.morelectricheating.com/default.aspx?page=item+detail&itemcode=CHROM253833&gclid=CPSHt5OA_LsCFSvl7AodXVcADgIf the bird rescue folks don't have anybody qualified to install a wire-in heating element in place of a simple bulb, buying these overpriced heaters might be cheaper than hiring somebody to install non-screw based ones.

author: Zad
author_rank: Super Contributor
timestamp: January 13, 2014, 09:59:20 pm
content: Yes, consumer legislation doesn't cover industrial uses of lamps here in the EU, no idea about the USA. I would consider using horticultural heater cable or pads.

author: GreyWoolfe
author_rank: Unknown
timestamp: January 13, 2014, 10:28:08 pm
content: SgtRock. check out this home depot linkhttp://www.homedepot.com/p/Philips-EcoVantage-72-Watt-100-Watt-A19-Soft-White-Dimmable-Halogen-Light-Bulb-4-Pack-426049/203637038?N=bmbuZ1z0xeui#It might be something you can use.

author: Len
author_rank: Frequent Contributor
timestamp: January 13, 2014, 10:31:07 pm
content: The bird centre now has enough light bulbs to keep the incubators running for years.http://www.cbc.ca/news/canada/ottawa/wild-bird-care-centre-aglow-after-light-bulb-donations-1.2494840

author: SgtRock
author_rank: Unknown
timestamp: January 13, 2014, 11:09:41 pm
content: Greetings EEVBees:Quote from: GreyWoolfe on January 13, 2014, 10:28:08 pm--That is just great. I remember hatching Bantam Chickens in a light bulb powered hatcher, great fun. Unfortunately now I live in town. But if you are in the country or on a large piece of land, you can get into the chicken business for, dare I say it, small potatoes. Thanks for all the good suggestions."When people thought the Earth was flat, they were wrong. When people thought the Earth was spherical they were wrong. But if you think that thinking the Earth is spherical is just as wrong as thinking the Earth is flat, then your view is wronger than both of them put together."Isaac Asimov 1920 - 1992

author: NiHaoMike
author_rank: Super Contributor
timestamp: January 14, 2014, 12:03:33 am
content: Another hack is to use 4 bulbs in place of 1, in a series-parallel arrangement. They'll produce almost the same heat (slightly more) but last near forever as they're running on half the rated voltage.

author: codeboy2k
author_rank: Super Contributor
timestamp: January 14, 2014, 06:53:38 am
content: I think those birds will be happy to have resistive heating instead of incandescent heating.. finally they can get some sleep !My current place is a condominium with a grand total of 3kW baseboard electric heating, but it's not enough.I have to keep the (incandescant) lights on and a gas fireplace to heat the place in the winter.It used to be that the HVAC installers would calculate the heat load of a house and remove some percentage of the needed heat capacity of the central heating system because they allowed for some percentage of space heating to come from the incandescent bulbs.. maybe 20% or so, I am just guessing. In a previous house I slowly replaced the burned out 60W and 100W incandescent bulbs with CFL and LED lighting and slowly my house was getting colder and colder; the central heater could not keep up with the space now.I am sure new home installations of HVAC systems don't do type of load calculation anymore anymore

author: Rerouter
author_rank: Super Contributor
timestamp: January 14, 2014, 08:11:41 am
content: Its a game of balancing, and i am equally confident short of 3 categories of room size they no longer calculate realistic load conditions,every meter cubed of air (~1kg) needs 1KW of heat to raise the temperature 1 degree (time unit is only for ideal enviroments with no leakage) and the material of any objects in the space will take more (wood takes 2.5KW per degree C per kg)your glass windows will radiate heat at approximately 0.8-1.2W per (meters squares * Celcius temperature difference squared) which mainly governs the equalization temperature for greater differences (temperature is squared)then you have the R-factors of your walls doors floor and roof which will all loose something,

author: G7PSK
author_rank: Super Contributor
timestamp: January 14, 2014, 09:11:00 am
content: Why cant they just use infra red bulbs, that is what is used in most hatcheries and animal hospitals etc. in the UK.http://www.thelightbulb.co.uk/product/General-Purpose-Lamps-Bulbs/Infrared-Heat/Infrared-Heat-Lamp-ESE27-Screw-Cap-Clear/c-60

author: Rerouter
author_rank: Super Contributor
timestamp: January 14, 2014, 09:17:14 am
content: my only warning is from what i have experienced with them, they have more fragile filaments than incandescent globes, so try to keep them where they wont be knocked while running or cooling down

author: Len
author_rank: Frequent Contributor
timestamp: January 14, 2014, 05:16:06 pm
content: Quote from: G7PSK on January 14, 2014, 09:11:00 amIt looks like those wouldn't fit in their incubators. Simpler to just ask people to donate left-over bulbs, now they have a "lifetime supply" of the correct type.I know, that's not a proper EEVBlog solution.