Calculation of gas supply to steam energy storage tank

How do you calculate steam consumption in a flow type application?

The mean steam consumption of a flow type application like a process heat exchanger or heating calorifier can be determined from Equation 2.6.6, as shown in Equation 2.6.7. But as the mean heat transfer is, itself, calculated from the mass flow, the specific heat, and the temperature rise, it is easier to use Equation 2.6.7.

How to calculate the steam required for own use?

To calculate the steam required for own use, the following precise data must be available: make-up water demand, type of water treatment, chemical mode of operation of the boiler, condensate return with condensate temperatures, and if necessary, fuel preheating.

How is steam consumption determined?

Steam consumption may be determined by direct measurement, using flowmetering equipment. This will provide relatively accurate data on the steam consumption for an existing plant. However, for a plant which is still at the design stage, or is not up and running, this method is of little use.

How do you calculate the cost of generating steam?

Calculating the cost of generating steam is relatively easy. The total variable cost of raising steam, CG, is the sum of all these individual contributions, expressed as dollars per thousand pounds ($/Klb) of steam generated: Fuel cost is usually the dominant component, accounting for as much as 90% of the total. It is given by:

How is steam output calculated?

To determine the actual steam output required, one must consider the mode of operation of the overall steam boiler system. The heat-up steam quantity for the feed water vessel is decisive for the internal steam consumption.

How much heat energy can be transferred by steam?

A benefit with steam is the large amount of heat energy that can be transferred. The energy released when steam condenses to water is in the range 2000 - 2250 kJ/kg (depending on the pressure) - compared to water with 80 - 120 kJ/kg (with temperature difference 20 - 30 oC).