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How do you measure steam consumption?
How is steam consumption determined?
How accurate is steam consumption?
How to calculate steam consumption during warm-up?
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.
- Measurement of Steam Consumption
The use of a steam flowmeter may be used to directly measure...
- Steam Consumption of Plant Items
Determine the heat output: Heat output = Water flowrate x...
- Measurement of Steam Consumption
- 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...
The use of a steam flowmeter may be used to directly measure the steam usage of an operational item of plant. This may be used to monitor the results of energy saving schemes and to compare the efficiency of one item of plant with another.
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.
Determine the heat output: Heat output = Water flowrate x specific heat of water x temperature change. Heat output = 4 l/s x 4.19 kJ/kg °C x (82 - 71 °C) Heat output = 184 kW. An alternative method of estimating the load on a heating calorifier is to consider the building being heated.
Being able to track the cost of steam is necessary to make sure that the factory remains profitable. 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...).
This document provides information on different methods for estimating steam consumption, including calculation, measurement, and using thermal ratings.
