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The Combined Heat and Power Technology - Literature review Example

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The goal of this review "The Combined Heat and Power Technology" is to shed light on the function of Combined Heat and Power (CHP) systems. Furthermore, the review will outline the benefits of applying the CHP systems as an alternative to the traditional centralized power systems…
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The Combined Heat and Power Technology
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Download file to see previous pages The heat that is generally wasted in conventional power generation is recovered as useful energy. This energy is in turn used for satisfying an existing thermal demand such as heating and cooling of the building and water supply. Through this process, it is possible to avoid the losses that would otherwise be incurred from a separate generation of power (See figure).
According to Casten (1998), conventional centralized power systems average less than 33% delivered efficiency for electricity in the U.S. whereas CHP systems can deliver energy with efficiencies exceeding 90%1. Additionally, it also helps to significantly reduce emissions per delivered MWh. If we look into the cost and benefits of CHP systems it can be said that these systems can provide cost savings for industrial and commercial users and substantial emissions reductions. Some of the popular examples of CHP systems are diesel engines, natural gas engines, steam turbines, gas turbines, micro-turbines, and fuel cells. This is a technology that is popular in most parts of the world and most of the CHP technologies are commercially available for heat and power applications (ONSITE SYCOM, 1999). The efficiency of a CHP system depends on the basic technology used to generate the electricity and thermal energy, the system design, and the amount of utilizable thermal energy. Therefore, each CHP system will have its own efficiency and a site-specific efficiency once installed. The following are the six most commonly installed CHP systems that tend to offer in general good standard ranges of achievable efficiency:
CHP systems are known for three general categories of benefits i.e. environmental, economic, and transmission and distribution. Though these systems are popular in most parts of the world, several barriers, such as utility interconnection costs and related issues, environmental regulations in certain states and technology costs have kept these technologies from wide use.  ...Download file to see next pagesRead More
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