CONSUMPTION_RATE_TYPE

INSTALLATIONS / [...] / ENERGY_USAGE_MODEL / CONSUMPTION_RATE_TYPE

Required	Child of	Children/Options
No	ENERGY_USAGE_MODEL	None

Description

important

You must have good control of the input rates - which are stream day rates and which are calendar day rates - and specify CALENDAR_DAY as input if necessary.

When REGULARITY is used,the consumption rate type may be specified for DIRECT ENERGY USAGE MODEL(LOAD or FUELRATE) by setting CONSUMPTION_RATE_TYPE to either CALENDAR_DAY or STREAM_DAY.

The default behaviour, is that these will be interpreted as STREAM_DAY if not set explicitly. This will result in fuel rates being multiplied by regularity to obtain (average) calendar day fuel rates, while the loads will be kept stream day when passed to the generator set calculation.

note

CALENDAR_DAY: The average rate over a period after adjusting for operating conditions that keeps the average throughput below the maximum achievable throughput for a single day, known as stream day.

STREAM_DAY: The actual rate at a given moment. When multiplied with a REGULARITY factor you get the calendar day rate which needs to be used when evaluating the economics of a process unit.

$$stream\ day\ rate = \frac{calendar\ day\ rate}{regularity}$$

Format

CONSUMPTION_RATE_TYPE: <consumption_rate_type>

Where <consumption_rate_type> can either be CALENDAR_DAY or STREAM_DAY.

Example

Specifying consumption rate type for fixed/direct consumers:

LOAD: 10
CONSUMPTION_RATE_TYPE: CALENDAR_DAY
...
FUELRATE: 10000
CONSUMPTION_RATE_TYPE: STREAM_DAY

Given CALENDAR_DAY input the rate will be converted to STREAM_DAY when evaluating, and any fuel rate in output will be converted back again to CALENDAR_DAY rate equivalent in the results.

Given STREAM_DAY input, and a REGULARITY factor of 0.5 (50%), the interpretation is that the process unit will run at full capacity half of the time. The resulting fuel rate reported for a fuel consumer will be halved compared to 1 (100%) regularity.