Why we use 50w led corn light replace 175W high pressure sodium lamp

The 50W LED corn light has a 6500lm output which is equivalent to 175W metal halide lamp, using up to 71% less energy and lasting up to six times longer than traditional MH lighting. Usually ROI is 8 to 10 months.
Parameters of the contrast of 50w led corn bulb with 175W high pressure sodium lamp

High Pressure Sodium Lamp
power
175W
50W
Power consumption
high
low
Color temperature
2000-2500K
3000-6500
CRI
20-25
> 80
Efficacy
AC220-AC230
AC85-265
Power efficiency
Low,70%
High,90%
Utilization rate of light source
low
high
life of the lamps and lanterns
3-5years
8-10years
service life of the light source
10000hrs
5000hrs
Luminous efficacy (Lm/W)
80lm/W
130lm/W
Protection grade
IP65
IP65
Environmental protection
 Polluting
No
 startup time
5-10  minutes
Start instantly
Consecutive start
No
Yes
Calorific value
high
low

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