## Calculating of proapne losses in refrigerant cycle

## Calculating of proapne losses in refrigerant cycle

(OP)

Dear all. I have a question. Would you please help me?

In our propane storage tank (T=-44 C, P=4 mbarg), sometimes CH4 enters so it build up in condenser of propane chilling system and flaring is done by operator in order to reduce pressure of chilling compressor discharge.

How can I calculate amount of flaring? Is it possible?

Frankly I don't have any idea!

In our propane storage tank (T=-44 C, P=4 mbarg), sometimes CH4 enters so it build up in condenser of propane chilling system and flaring is done by operator in order to reduce pressure of chilling compressor discharge.

How can I calculate amount of flaring? Is it possible?

Frankly I don't have any idea!

## RE: Calculating of proapne losses in refrigerant cycle

## RE: Calculating of proapne losses in refrigerant cycle

I could not follow you.

I just want to know amount of flaring, don't need CH4 concentration.

The quesrion is: how could I predict or calculate it (knowing CH4 introduced in main tank)

## RE: Calculating of proapne losses in refrigerant cycle

## RE: Calculating of proapne losses in refrigerant cycle

## RE: Calculating of proapne losses in refrigerant cycle

## RE: Calculating of proapne losses in refrigerant cycle

- pressure before flaring
- pressure after flaring
- time of flaring

Characterize the pipe and fittings from the chilling compressor discharge to the flare into a fluid flow problem, then solve for flow.Good Luck,

Latexman

## RE: Calculating of proapne losses in refrigerant cycle

Good idea. But the pressure control system is automatic. So the pressure of the vessel wouldn't change.

PV valve open until the vessel pressure does not increase.

## RE: Calculating of proapne losses in refrigerant cycle

Log the data until you see a consistent frequency, then you can have a consistent loss.

This frequency will be consistent with how long it takes the incoming CH4 concentration to build up to the CH4 concentration in the condenser that causes high chilling compressor discharge pressure. To improve the consistency, specify to the operators the exact chilling compressor discharge pressure, not a range, you want them to start flaring. And, if it makes sense, it may not, specify to the operators the exact chilling compressor discharge pressure, not a range, you want them to stop flaring.

Good Luck,

Latexman