Hello everybody! Does the high temperature of natural gas affect the gas turbine steps? Какой должна быть температура природного газа перед газовой турбиной?

 

What does that mean ??

 

It probably means: Does natural gas temperature affect the combustion mode transfer temperature setpoints? OR Does it affect the ability to transfer combustion modes without any problems?

To which you will probably reply, "You don't know enough; study more."

The gobble-dee-gook is probably Cyrillic/Russian; Google Translate detects it automatically as such and translates it as: "What should be the temperature of natural gas ahead of a gas turbine?"

The question needs more information--but we rarely get that these days.... So sad. Most everyone thinks every GE-design heavy duty gas turbine is like every other GE-design heavy duty gas turbine and every problem can be solved because every problem is so simple because every turbine is like every other turbine.

This isn't fun any more. Is it?

 

[QUOTE = "CSA, сообщение: 202313, участник: 189"]
Это, вероятно, означает: влияет ли температура природного газа на заданные значения температуры перехода в режим горения? ИЛИ Влияет ли это на возможность без проблем передавать режимы горения?

На что вы, вероятно, ответите: «Вы недостаточно знаете; изучите больше».

Gobble-dee-gook, вероятно, кириллица / русский язык; Google Translate автоматически определяет его как таковой и переводит как: «Какой должна быть температура природного газа перед газовой турбиной?»

Для этого вопроса нужна дополнительная информация, но в наши дни мы ее редко получаем .... Так грустно. Практически все думают, что каждая сверхмощная газовая турбина GE, разработанная GE, подобна любой другой сверхмощной газовой турбине GE, и каждая проблема может быть решена, потому что каждая проблема настолько проста, потому что каждая турбина похожа на любую другую турбину.

Это больше не весело. Это?
[/ QUOTE]

[QUOTE = "CSA, сообщение: 202313, участник: 189"]
Это, вероятно, означает: влияет ли температура природного газа на заданные значения температуры перехода в режим горения? ИЛИ Влияет ли это на возможность без проблем передавать режимы горения?

На что вы, вероятно, ответите: «Вы недостаточно знаете; изучите больше».

Gobble-dee-gook, вероятно, кириллица / русский язык; Google Translate автоматически определяет его как таковой и переводит как: «Какой должна быть температура природного газа перед газовой турбиной?»

Для этого вопроса нужна дополнительная информация, но в наши дни мы ее редко получаем .... Так грустно. Практически все думают, что каждая сверхмощная газовая турбина GE, разработанная GE, подобна любой другой сверхмощной газовой турбине GE, и каждая проблема может быть решена, потому что каждая проблема настолько проста, потому что каждая турбина похожа на любую другую турбину.

Это больше не весело. Это?
[/ QUOTE]
Если вы это знаете, каждая газовая турбина имеет предел температуры природного газа до и во время работы.Why is it impossible to start up and during operation to start up a high temperature for ignition of natural gas? what affects and what will deteriorate if the temperature is more than t> 70 ° C

 

1) Fuel Gas Supply Temp. should be, according to GE, 40 Deg. C above the the Dew Point Temp. You will need to ask your gas supplier if you don't have the Dew Point.
2) What controls combustion mode transfer is TTRF (Calculated Ref. Firing Temp. versus various setpoints . I don't think gas temp. should have any relevance.
What is your gas temp. and what was it before ?
There is a lot of knowledge out here on Control.com but the mode of the forum has changed a lot. This was a free of charge friendly forum where experienced guys tried to help with members problems when they had time., nobody makes money out of this. A member of the forum CSA who was very experienced has just left because he was tired of being abused.
I've added a few maybe helpful documents, have a read and let me know if you need more help

 

Thanks for answering me and for the info.After the natural gas compressor, the temperature after the cooling one is 68 ÷ 70 ° C degrees. Is it normal? If high t-70 ÷ 100 ° c will affect the first stage of the turbine a bit( wheelspase)?

 

Your talking about fuel temp. affecting combustion temp. If you are at Base load combustion temp. is going to be 1050 - 1250 Deg C. Can you explain. Did you get your Gas Dew Point, I've seen fuel gas at 70 Deg. many times

 

Our country is very hot and the temperature of natural gas during the day is high t-70 ° c to t-90 ° с.The cooler does not cool well due to the heat and the air temperature affects the load. Does the natural gas temperature also affect first the turbine steps and then the load?

 

I don't think that you understand how a gas turbine works. The gas fuel is only as it says, fuel. The gas turbine produces compressed air, it then passes this air to a combuster with fuel and heats up the air so it expands and then accelerates the air over a turbine to produce horsepower. The gas temperature has no impact on this

 

Thank you very much. I am from Georgia

 

I am British but I live in Philippines so I am used to hot. Today it will be 34-36 Deg.C

 

я очень рад .God bless you and be healthy

 

Hi,My friend can one question about the turbine and gas compartment?

 

sure,, what is your question

 

And due to the rain and the wind, the air flow sensors fluctuate greatly, which leads to the unit shutdown. To avoid this situation, what should be done?

 

I'm sorry, I don't have drawings, I couldn't even guess

 

Ok.no problem

 

And due to the rain and the wind, the air flow sensors fluctuate greatly, which leads to the unit shutdown. To avoid this situation, what should be done?

Hello

Here some quotes from 6FA manual:
Weather Louvers
The louvers provide weather protection from injection of rain. Due to the change in direction of
the air flow, liquid droplets gather on the louver and are separated from the air.

How about your Weather louvers at your site ?? are they operating properly according to OEM specification?

Otherwise please clarify the situation:

-Sensor physically erected/mounted,
-Are you saying that sensors measurements is disturbed by "rain and wind weather"

With more precise informations , more precise can be our remote assistance/support...

Controls Guy25.

 

Hello everybody! Does the high temperature of natural gas affect the gas turbine steps? Какой должна быть температура природного газа перед газовой турбиной?

Merabiko8

Here some quotes from OEM manual, that can highlight some points that you are looking for, on GE HDGT Fuel Temperatures specifications/relationships:
As The need for higher efficiency gas turbines
increases, a growing number of combined cycle
power plants are incorporating performance gas
fuel heating as a means of improving overall plant
efficiency. This heating, typically increasing fuel
temperatures in the range of 365°F, improves gas
turbine efficiency by reducing the amount of fuel
needed to achieve desired firing temperatures. For
fuel heating to be a viable method of performance
enhancement, waste heat, in the form of HRSG
steam or feedwater, is utilized as the heating
medium. It is not economical to utilize gas fired,
oil fired or electric heaters for performance gas
fuel heating.
Proper design and operation of the Gas Fuel
Heating System is critical in insuring reliable
operation of the gas turbine. Improper selection of
components, controls configuration and/or overall
system layout could result in hardware damage,
impact plant availability and create hazardous
conditions for plant personnel. This paper
addresses the critical design criteria that should be
addressed during the design and construction of
these systems.
Also included in this paper is a “Typical” GE
Gas Fuel Heating System. This system has been
developed taking into consideration the system
requirements defined within.......
The Gas Fuel Heating System shall be designed
to produce the desired gas fuel temperature at the
interface with the gas turbine equipment.
Guaranteed performance is based on the design
GER 4189
3
fuel temperature at the inlet to the gas turbine gas
fuel module (FG1). The Gas Fuel Heating and
Supply Systems shall compensate for radiant and
conductive heat losses through the system.
Compensation shall include but not be limited to
elevated heater outlet temperatures, use of piping
and equipment insulation and minimization of
piping length from heater outlet to turbine inlet.
The Gas Fuel Heating System shall be designed
to support specified gas fuel temperature setpoints
required by the gas turbine. These setpoints
include high and low temperature alarms, gas
turbine controls permissives and gas turbine
controls functions. These setpoints are derived by
GE Gas Turbine Engineering and are based on
operability requirements and/or design limitations
of components within the gas turbine gas fuel
system.
During specified cold and hot gas fuel turbine
operating modes, the Gas Fuel Heating System
shall attain and maintain the fuel at a temperature
that corresponds to a Modified Wobbe Index
within (5% of the target value. The Modified
Wobbe Index is a calculated measurement of
volumetric energy content of fuel and is directly
related to the fuel temperature and lower heating
value (LHV). The Modified Wobbe Index is......

You want to learn ....We can teach you !!!!

I am sure that you will be glad to read that lines..

Controls Guy25.

 

Hi.As I understood from you, it is very important where the Sensor is.Yes?