Results 1 to 6 of 6

Thread: Flood Bulb Heat Temperature Test

  1. #1
    Moderator Takacha's Avatar
    Join Date
    Mar 2017
    Location
    US
    Posts
    1,217
    Thanks
    0
    Thanked 2,058 Times in 1,113 Posts

    Flood Bulb Heat Temperature Test

    I tested on the Flood Bulb & see how much the temperature changes by the distance.

    Philips Indoor/outdoor PAR38 Flood Bulb. 70w ( equivalent of 90w ), Bright Light ( not spot light ), Dimmable. PAR38 = bulb surface 4.75inch in diameter.

    1500 lumens
    2800 kelvins

    The bulb was installed in a dome fixture with reflector

    Test room ambient temperature was 86F ( 30C )
    These are the pictures of the bulb & box
    Name:  1.jpg
Views: 10
Size:  90.7 KBName:  2.jpg
Views: 10
Size:  80.7 KB
    It's important to handle bulbs with oil/chemical free hand since oil residue will burn the bulb surface hotter & uneven. It may shorten the life of the bulb or cause breakage. I always wrap the bulb with clean paper towel when I handle them

    Temperature was measured on white paper

    Distance ( inch ) Temperature ( F ) Distance ( cm ) Temperature ( C )
    15 120 38 48.9
    20 113 50.8 45
    25 102 63.5 38.9
    30 100 76.2 37.8
    35 98.6 88.9 36.9
    40 96 101.6 35.6
    45 94 114.3 34.4
    50 91 127 32.8
    ------- ------- ------- -------
    70 88 177.8 31.1


    Here is some interesting table from an article about comparing variety of light bulbs.

    The test is little old & only measured at 12" ( 30.5cm ) but I thought it might be also useful.

    " Watts, Heat and Light: Measuring The Heat Output of Different Lamps " by Bob MacCargar, January 2006

    Make.... Watt Type of Bulb............................ Temp(F) at 12"........... Temp(F) of Light Fixture
    2 min 5 min 10 min 2 min 5 min 10 min
    ZooMed 150 Infra-red spot 149 159 171 77 80 82
    ZooMed 160 MV Flood 'Powersun' 96 106 115 85 95 102
    Westron 160 MV 'Megaray SB' 98 112 128 74 77 84
    ESU 150 Incandescent 'Nocturnal BL' 143 164 165 100 118 118
    ESU 150 Incandescent 'Brightlight' 191 209 218 75 77 79
    ZooMed 150 Flood 'Basking Lamp' 181 186 195 105 114 123
    ZooMed 100 MV Flood 'Powersun' 118 131 136 98 116 118
    T Rex 100 MV Spot 'Active UV Heat' 93 114 136 84 102 113
    ESU 100 Incandescent 'Nightlight' 134 150 152 78 80 83
    ESU 100 Incandescent 'Brightlight' 165 188 194 77 79 81
    ACE 100 Halogen Flood 205 226 226 77 82 86
    ZooMed 100 Ceramic Heat Emitter 101 127 140 75 99 104
    GE 100 Halogen Spot Lamp 158 257 271 75 82 87
    GE 100 Halogen Flood Lamp 128 178 187 74 86 88
    GE 75 Incandescent Spot 'Black Light' 92 101 103 89 96 97
    GE 60 Incandescent 'Black Light' 102 109 112 93 94 105
    GE 60 Incandescent Clear Glass 169 176 178 75 81 86
    Westron 60 Inline MV Flood Lamp 95 97 103 90 93 98
    Westron 60 Inline MV Spot Lamp 130 146 150
    Westron 60 Heat Emitter 98 112 130 77 79 80
    GE 50 Halogen Spot Lamp 185 193 196 76 85 88
    GE 50 Halogen Flood Lamp 123 138 141 74 78 81
    Last edited by dimzel; 30-09-17 at 10:48.
    Hello~ my name is Taka. I have a red iguana Charby

  2. The Following 4 Users Say Thank You to Takacha For This Useful Post:: coolmoon (30-09-17),dimzel (30-09-17),Johnny (30-09-17),Scarl (30-09-17)
  3. #2
    Moderator Takacha's Avatar
    Join Date
    Mar 2017
    Location
    US
    Posts
    1,217
    Thanks
    0
    Thanked 2,058 Times in 1,113 Posts
    I forgot to mention. I did this test with the bulb facing straight down but the bulb can be also used as outdoor security light so it's safe to be installed with angle.
    Hello~ my name is Taka. I have a red iguana Charby

  4. The Following 2 Users Say Thank You to Takacha For This Useful Post:: dimzel (30-09-17),Johnny (30-09-17)
  5. #3
    Moderator Johnny's Avatar
    Join Date
    Nov 2013
    Location
    Nigrita, Greece
    Posts
    13,720
    Thanks
    8,201
    Thanked 18,327 Times in 11,091 Posts
    That is great, thank you, Taka.

    Sent from my VFD 300 using Tapatalk
    Hello all my name is Mariana, mother to the green iguana Johnny

  6. The Following User Says Thank You to Johnny For This Useful Post: dimzel (30-09-17)
  7. #4
    Snr Moderator dimzel's Avatar
    Join Date
    Jun 2012
    Location
    Russia
    Posts
    43,579
    Thanks
    54,800
    Thanked 32,372 Times in 21,359 Posts
    Taka, thank you so much for your work!Name:  Хлопает.gif
Views: 12
Size:  3.1 KB
    Name:  Thank you.gif
Views: 12
Size:  80.8 KB
    Can you add a photo of the lamp and the packaging?
    My name is Irina. Sorry my mistakes in English.

  8. #5
    Administrator coolmoon's Avatar
    Join Date
    Apr 2014
    Location
    ogden, utah
    Posts
    16,550
    Thanks
    10,047
    Thanked 19,363 Times in 12,179 Posts
    Nice information and good testing you did. The other chart did unusual testing but gives good information.
    Saving the world, one reptile at a time. They make me want to be a better person. My name is Ann.

  9. The Following User Says Thank You to coolmoon For This Useful Post: dimzel (30-09-17)
  10. #6
    Moderator Takacha's Avatar
    Join Date
    Mar 2017
    Location
    US
    Posts
    1,217
    Thanks
    0
    Thanked 2,058 Times in 1,113 Posts
    Thank you guys

    I was also going to test the smaller bulb ( 53w same type & brand) but I forgot it was broken
    Last edited by dimzel; 30-09-17 at 10:49.
    Hello~ my name is Taka. I have a red iguana Charby

  11. The Following User Says Thank You to Takacha For This Useful Post: dimzel (30-09-17)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •