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How is steam consumption calculated?
How do you calculate steam consumption in a flow type application?
How to calculate steam consumption during warm-up?
What is steam consumption?
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.
- Steam Consumption of Plant Items
Although some heat is absorbed by the product, the net...
- Measurement of Steam Consumption
The drum is first weighed with a sufficient quantity of cold...
- Steam Consumption of Plant Items
- What Is Steam Consumption in A pipe?
- Steam Consumption in Steam Mains
- What Is Warm-Up Load ?
- What Is Process Plant Running load?
- How to Warm-Up A System?
Steam consumed and steam utilized at the application point are not the same. Typically, steam generated in a steam boilerexceeds the amount needed at the point of use. The difference in steam consumption and steam utilization is due to: 1. Steam condensation when it travels on its way to point of use mainly due to exposed surfaces. 2. Leakages (if ...
Steam consumption within the pipe system needs to be judiciously monitored and controlled. The rate of condensation of the steam in the steam piping network depends upon the type of load (i.e. warm-up load or running load). The rate of condensation of steam needs to be taken into account for sizing the steam traps, and also in finalizing the boiler...
During the plant start-up after a long time or from cold, then the steam is required to heat the system uniformly to bring the system close to the normal working temperature of the system. The ‘warm-up load’ is the steam load which is associated with the steam consumption during the start-up of the plant. This can be either from the cold shut down,...
Process plant running load is the steam load which is related to the normal (full load) continuous load of the plant. The rate of condensation of steam during the full load running a load of the plant is minimum.
Uniform and slow system warm-up can be achieved by a small by-pass valve in parallel to the main line isolation valve. The time required to warm up the pipe network decides the warm-up (bypass) valve size. This valve can be a manual or automatic type depending on the user/client. Avoid using the main valve for warm-up as it is designed for full flo...
Calculation of consumption. When determining the necessary steam output of a steam boiler system, all steam consumers in the steam network must ideally be recorded in a table with their minimum and maximum output and then the output of all consumers must be added up.
Although some heat is absorbed by the product, the net result is that the steam consumption is much the same whether the plant is working or standing idle, although fluctuations will occur during opening and closing. Steam consumption can sometimes be estimated using the basic heat transfer Equation 2.5.3:
The drum is first weighed with a sufficient quantity of cold water. Steam is then supplied to the plant, and any condensate is discharged below the water level in the container to condense any flash steam. By noting the increase in weight over time, the mean steam consumption can be determined.
Understanding how much cost steam is also a powerful motivator to look for energy savings (look for leaky steam traps, install steam turbines to recover energy...). The present page presents a shortcut method to estimate the cost of steam produced in a factory.
Methods of Estimating Steam Consumption Author: Spirax-Sarco Limited Subject: How to calculate steam requirements for flow and non-flow applications. Including warm-up, heat losses and running loads Created Date: 2/24/2005 11:20:34 AM
