Do my homework for me

[olds]

I am going to add some outdoor lights. Which is more efficient?

Examples
Flood
Halogen

 

[Rubycon]

Is this is a trick question?

A halogen bulb has a quartz tube inside the envelope. It will produce whiter light with more efficacy. (higher lumen /watt)

The flood can be a halogen too.

 

[dug777]

From a wattage POV, who cares They're exactly the same

 

[olds]

Originally posted by: MS Dawn
Is this is a trick question?

A halogen bulb has a quartz tube inside the envelope. It will produce whiter light with more efficacy. (higher lumen /watt)

The flood can be a halogen too.

DOH!

 

[Rubycon]

From the examples you listed above the halogens will be generally more expensive to operate from a maintenance standpoint. The cheap boxes often leak and cause the double ended lamps to fail frequently. They will have a sharper cutoff producing more light in the middle vs. the more conventional PAR fixture.

Coverage is about the same - the double halogen has better control if you need to keep the light out of a neighbor's yard, for example.

As previously mentioned, the halogens will have a whiter light and produce a few more lumens per watt consumed.

 

[amish]

Originally posted by: MS Dawn
From the examples you listed above the halogens will be generally more expensive to operate from a maintenance standpoint. The cheap boxes often leak and cause the double ended lamps to fail frequently. They will have a sharper cutoff producing more light in the middle vs. the more conventional PAR fixture.

Coverage is about the same - the double halogen has better control if you need to keep the light out of a neighbor's yard, for example.

As previously mentioned, the halogens will have a whiter light and produce a few more lumens per watt consumed.

is there anything you don't know?

 

[olds]

Originally posted by: MS Dawn
From the examples you listed above the halogens will be generally more expensive to operate from a maintenance standpoint. The cheap boxes often leak and cause the double ended lamps to fail frequently. They will have a sharper cutoff producing more light in the middle vs. the more conventional PAR fixture.

Coverage is about the same - the double halogen has better control if you need to keep the light out of a neighbor's yard, for example.

As previously mentioned, the halogens will have a whiter light and produce a few more lumens per watt consumed.

Thanks. I don't have to worry about neighbors.

 

[Mark R]

The PAR 38 bulbs are more expensive, slightly less bright and have a slightly wider beam.

The halogen bulbs are cheaper, and have a longer life (assuming that the actual light fitting is of decent quality - This is a bit of an assumption as the cheap ones can overheat or stress the bulbs destroying them quickly). The halogen lights are more efficient, and have a narrower, more controllable beam.

What do you want these light for? 150 W x 2 is way too bright for 'security' lighting, especially when the lighting comes from one point on a wall. The result is a very bright pool of light close-up, and extremely dark predictable shadows away from the light. A number of security consultants believe that such bright lighting is actually detrimental to security.

For security purposes, installation of several lower power (e.g. 60 W) lamps at intervals within provides more even lighting and doesn't disrupt dark adapted vision to the same extent.

Alternatively, if you want outside lighting for work, etc. where the lighting will be on for a significant period of time - the installation of high-efficiency lighting e.g. high pressure sodium, is a far better alternative to either halogen or standard incandescent.

 

[olds]

Originally posted by: Mark R
The PAR 38 bulbs are more expensive, slightly less bright and have a slightly wider beam.

The halogen bulbs are cheaper, and have a longer life (assuming that the actual light fitting is of decent quality - This is a bit of an assumption as the cheap ones can overheat or stress the bulbs destroying them quickly). The halogen lights are more efficient, and have a narrower, more controllable beam.

What do you want these light for? 150 W x 2 is way too bright for 'security' lighting, especially when the lighting comes from one point on a wall. The result is a very bright pool of light close-up, and extremely dark predictable shadows away from the light. A number of security consultants believe that such bright lighting is actually detrimental to security.

For security purposes, installation of several lower power (e.g. 60 W) lamps at intervals within provides more even lighting and doesn't disrupt dark adapted vision to the same extent.

Alternatively, if you want outside lighting for work, etc. where the lighting will be on for a significant period of time - the installation of high-efficiency lighting e.g. high pressure sodium, is a far better alternative to either halogen or standard incandescent.

They are going on my well (pump) shed which is 75' from the house. I keep tools out there and park my trailers and rv out there. I need light so that I can drive through and park/load/unload items at night.
We live in the sticks so there are no street lights or neighbors.

http://pics.bbzzdd.com/users/oldsmoboat/pumphouse.JPG

 

[Jeff7]

Originally posted by: amish

Originally posted by: MS Dawn
From the examples you listed above the halogens will be generally more expensive to operate from a maintenance standpoint. The cheap boxes often leak and cause the double ended lamps to fail frequently. They will have a sharper cutoff producing more light in the middle vs. the more conventional PAR fixture.

Coverage is about the same - the double halogen has better control if you need to keep the light out of a neighbor's yard, for example.

As previously mentioned, the halogens will have a whiter light and produce a few more lumens per watt consumed.

is there anything you don't know?

Maybe the only things to read on cruise ships are maintenance or service manuals for various electrical appliances.

 

[amish]

Originally posted by: Jeff7

Originally posted by: amish

Originally posted by: MS Dawn
From the examples you listed above the halogens will be generally more expensive to operate from a maintenance standpoint. The cheap boxes often leak and cause the double ended lamps to fail frequently. They will have a sharper cutoff producing more light in the middle vs. the more conventional PAR fixture.

Coverage is about the same - the double halogen has better control if you need to keep the light out of a neighbor's yard, for example.

As previously mentioned, the halogens will have a whiter light and produce a few more lumens per watt consumed.

is there anything you don't know?

Maybe the only things to read on cruise ships are maintenance or service manuals for various electrical appliances.

could be. either way its amazing to me.

 

[Kaido]

Originally posted by: amish

Originally posted by: Jeff7

Originally posted by: amish

Originally posted by: MS Dawn
From the examples you listed above the halogens will be generally more expensive to operate from a maintenance standpoint. The cheap boxes often leak and cause the double ended lamps to fail frequently. They will have a sharper cutoff producing more light in the middle vs. the more conventional PAR fixture.

Coverage is about the same - the double halogen has better control if you need to keep the light out of a neighbor's yard, for example.

As previously mentioned, the halogens will have a whiter light and produce a few more lumens per watt consumed.

is there anything you don't know?

Maybe the only things to read on cruise ships are maintenance or service manuals for various electrical appliances.

could be. either way its amazing to me.

lol after reading her first post above I was going to say "is there anything you DON'T know?? :Q"

 

[Mark R]

Originally posted by: oldsmoboat
They are going on my well (pump) shed which is 75' from the house. I keep tools out there and park my trailers and rv out there. I need light so that I can drive through and park/load/unload items at night.
We live in the sticks so there are no street lights or neighbors.

http://pics.bbzzdd.com/users/oldsmoboat/pumphouse.JPG

Any of those lights will be more than adequate for convenience purposes. The motion sensors will turn them on and off, so if you're only using them for parking up and finding stuff - they are a good option.

If you're not going to be out working in the yard at night for hours on end, then there's no point in spending more for sodium or halide lamps. Incadescent lamps are spendy if left on all the time - in electricity and inconvenience when they need very regular replacement.

 

[Rubycon]

Originally posted by: Mark R

If you're not going to be out working in the yard at night for hours on end, then there's no point in spending more for sodium or halide lamps. Incadescent lamps are spendy if left on all the time - in electricity and inconvenience when they need very regular replacement.

True - HPS, MH (including the multi vapor types) and CFL are best suited for "dusk to dawn" use. Mercury vapor is being phased out due to its lower efficacy. Higher quality HID's such as Venture's 6000K daylight bulb (the 1.8kW version is used for professional areana/stadium lighting) have excellent color rendering and output and double tube versions are available for instant restrike in the event of momentary power failures. If you don't mind a little green the Iwasaki is a cheap substitute.

Incandescents are best suited for motion activated lights for residential areas and certainly are cheap enough. Just make sure the gaskets around the covers are intact to keep water out during heavy rains. The tiniest drop of water on the bulb will kill it especially if it's running when that happens. Pop! goes the weasel.

 

[NoShangriLa]

Does the application require instant on?
What colour temperature is needed?
What efficiency rating that you are aiming for?

Metal halides HID or the newer/better fluorescent is a good solution if energy consumption is a concern, and instant on isn't a requirement.

 

[olds]

I went with the "flood" style. The halogen type didn't have enough adjustment in it without the fixtures for each light hitting each other.
I went with out the motion detector as the deer would have it coming on all night.
Thanks for the input.

 

[neit]

What ever you choose, please help keep the dark skies of the sticks dark and try and reduce upward light pollution