Chemical Engineering @ChemengFiles.Com

Energy efficiency for industrial boilers is a highly boiler specific characteristic. No two boilers are alike. There are two identically designed, constructed side by side, stoker fired boilers in Indiana burning the same fuel that have very different performance characteristics. Like twin teenagers, they are not the same.

Consideration of energy efficiency for industrial boilers, more often than not, is simplified and categorized to a one-size-fits-all approach. Just as when considering teenagers, this does not work. While everyone would like to believe their teenager is gifted and talented and in the 80th percentile of the population, we know that is not necessarily the case.

We also know, as for boilers, the average teenager is not representative of a widely diversified population. If you think it is, ask any parent with teenagers or an industrial boiler operator. While the variables associated with energy efficiency are more limited than those associated with a teenager, they are in no way any less complicated.

Four factors are critical for assessing energy efficiency in the industrial powerhouse supplying energy to make products for the benefit of customers in a highly competitive international market place. These are:

1. fuel type,
2. combustion system limitations,
3. equipment design, and
4. steam system operation requirements.

Furthermore, the industrial facility’s complexity, location, and objective complicate them. It is important for the industrial company to remember, unlike the utility, energy is a smaller portion of the final product price. However, without energy there is no final product or service. Needless to say, without products or services there is no need for people to do the work.

The internal energy and the entropy components of the elastic restoring force in rubbers were determined for natural rubber up to an extension ratio of about 3.0. Four different experimental measurements were necessary to determine these components: (1) the force-temperature coefficient at constant temperature and length; (2) the force-pressure coefficient at constant temperature and length; (3) the thermal expansion coefficient at constant length; and (4) the isothermal compressibility at constant length. The force-temperature and the force-pressure coefficients were functions of strain whereas the expansion coefficients and the isothermal compressibilities were independent of strain. These measurements gave an internal energy contribution of 23% for natural rubber independent of the strain over the range of extensions studied.

Diamyd Medical has announced that Swiss Medical Products Agency has approved a study of diabetes vaccine Diamyd (R) in children CONALTID risk of developing type 1 diabetes.

"Immunize children against diabetes has been since the beginning of a long-term goals of Diamyd Medical, dijoElisabeth Lindner, director general and CEO of Diamyd Medical. "Type 1 diabetes is a chronic and very serious and would be nice if we could prevent it now. It would avoid a lot of anxiety, suffering and costs for children and their families, as well as for the rest of society."