INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Parking Area Lighting - Replacements for Metal halide Bulb

Parking Area Lighting - Replacements for Metal halide Bulb

(OP)
I have some existing parking lot 250 watt and 400 watt metal Halide fixtures. They are Lithonia Polestars. The latest searches I do seem to indicate that there are LED equivalent bulbs, but they are expensive $200- $300. Has anyone tried to do this and had any issues with overheating. The Polestar fixture appears to be a sealed fixture type.

RE: Parking Area Lighting - Replacements for Metal halide Bulb

(OP)
Some further info. This is the bulb I am looking at.

http://www.ledglobalsupply.com/led-commercial-bulb...

I'm thinking this lamp requires airflow around it and may not be suitable with a sealed parking area fixture.

RE: Parking Area Lighting - Replacements for Metal halide Bulb

The description of a cooling fan within the bulb suggests unsuitability within sealed fixtures. I did not think that LED got that hot. Let us what you found out and the action taken. I would definitly discuss the situation with the supplier.

RE: Parking Area Lighting - Replacements for Metal halide Bulb

LED sources certainly get hot. Have a look at the elaborate heatsinking arrangements on the larger designs. Often the designer integrates the fins into the housing.

RE: Parking Area Lighting - Replacements for Metal halide Bulb

It may be OK, but it's something that you would need to discuss with the manufacturer. The link cited does not provide sufficient information about operating temperature and environmental constraints. If the fixtures are large enough, and the walls are good thermal conductors, there may be sufficient circulation to transfer heat to the fixture's walls and then to the outside. One might hope that the manufacturer recognized this as a possible operation scenario and designed his system for this type of application. Or not...

TTFN
FAQ731-376: Eng-Tips.com Forum Policies

Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers

Of course I can. I can do anything. I can do absolutely anything. I'm an expert!

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close