Thermal Output Characteristics
This IPB is superseded by IPB 4125
The following information may be used when calculating air conditioning
requirements.
| Apricot System Unit |
Power (Watts) |
Thermal Ouput |
|
see Note below |
(BTU/Hr) |
| LANstation |
40 |
136 |
| LS Pro |
40 |
136 |
| XEN-LS |
150 |
512 |
| XEN-LS II |
150 |
512 |
| Qi 486 |
150 |
512 |
| FTe |
233 |
795 |
| FTs |
465 |
1586 |
|
| Monitors |
Power (Watts) |
Thermal Output |
|
see Note below |
(BTU/Hr) |
| 14" VGA Paper White |
70 |
239 |
| 14" VGA Col (.39 pitch) |
100 |
341 |
| 14" VGA Col (.31 pitch) |
100 |
341 |
| 14" VGA Dual Sync |
140 |
478 |
| 14" Multi Sync MPR II |
210 |
717 |
| 17" Multi Sync MPR II |
280 |
955 |
These values are based on the following formula:-
1 Watt = 1 Joule/Sec = 3600 Joules/Hour
since 1 BTU = 1055 Joules, then 1 Watt = 3.412 BTUs/Hour
In addition, we assume 70% conversion rate from PSU output to thermal
output. This cancels out any losses in the PSU, and the thermal output can be calculated
directly from the power supply output.
Note:
The power dissipation quoted is for maximum output power, not input
power. Switch mode power supply units are 70% efficient. Add 30% to produce the total
maximum power consumption. See IPB 4091. |
