Energy savings projects

For most of the remaining installations, data had been collected since 1993 in connection with voluntary agreements with energy-intensive industries and subsidies to industrial energy-saving projects. 

Assess the reference basis of an energy saving project, namely ... 

Asset Energy Saving Projects Annual Million savings from fuel gas savings Capital Cost (Million USD) Payback time (years) 15 Year NPV (Million USD) CO2 savings per annum (MT)... 

FIGURE 11.24. Energy-saving projects to remove the heater bottlenecks. 

The power recovery turbine was not selected in this revamp package as it was not required for feed expansion. However, it can be considered as a major energy-saving project in the future. 

It is important to understand true variable and fixed steam costs when determining the benefits of an energy-saving project Inaccurate steam costs could lead to wasted investment for energy projects and mislead energy operation improvements. 

What happens if the energy-saving project could reduce HP steam use by 40klb/h From which boiler should steam production be reduced and by how much How do you value the steam to be reduced These are the questions for you to answer. 

It is common that decisions for implementing beneficial improvement ideas are made with the evaluation based on the inside process battery limit (ISBL). It is not surprising to find, in some eases, that the implemented energy-saving projects deliver far less benefits and require mueh high capital compared to what are predicted from evaluation. The reason is that energy savings at the process level can only be realized at the site-wide balanees when the utility bills come at the end of the year. 

Therefore, it is critieal that improvement ideas must be assessed in-line with overall balances of steam, power, and fuel. In typical cases, energy-saving projects could affect steam marginal priees, and henee impact the net benefits that the energy... 

A method is discussed here, which is based on OSBL conditions. This method can have a profound influence on evaluating project economics and thus determining the project selection. Improper project evaluation could lead to bad investment decisions bad projects are selected and good projects are discarded, which, regrettably, is common in energy optimization evaluations. To avoid the bad investment decisions and determine the true benefits for energy-saving projects, the effects on incremental steam, power, boiler feed water (BFW), and fuel balances must be assessed. A practical example is provided the next to illustrate how this method is applied. 

There is a real story of fuel gas long, which was caused due to the implementation of several large energy-saving projects. The fuel gas long scenario was not predicted in advance as the plant had a poor fuel gas balance. The plant fuel gas balance underestimated the production of refinery fuel gas but overestimated fuel... 

Therefore, it is important for a plant to have a good fuel gas balance available for review of the impact of feed changes and energy-saving projects. 

When energy saving projects are treated, these have to go through four main phases ... 

I get to play with some cool equipment and have been involved in a variety of projeets including some equipment design work, health and safety, production efficiency and energy saving projects to ensure our company produces life-saving medicines in a responsible way that doesn t damage the environment. 

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