Abstract
This paper aims to validate the performance capabilities of a Pressure Reducing Turbine (PRT) with respect to initial predictions based on analytic calculations. The designed equipment was installed in a beverage facility, located in Brazil. The validation procedure consists of analyzing the data collected in several periods of PRT’s operation, accessed remotely via an online server. The analysis of empirical data identifies the behavior of two key variables: generated power and effective efficiency. However, the observed boundary conditions differed significantly from expected values, forcing the turbine to operate in off-design conditions. The turbine model was hence refined and used to predict the PRT’s performance in such conditions. Results showed satisfactory accuracy for both power and efficiency predictions.
Highlights
Brazil has many industry sites, with a wide range of specialties, such as soy processing, automobilist, food and drinks, among others
According to the International Energy Agency [4], the energy sector and industrial processes was responsible for the emission of 35 Gt of CO2 in 2020, while there is a lack of new energy efficiency policies
The high fluctuation in mass flow contributed to the operation of the Pressure Reducer Turbine (PRT) in off-design conditions
Summary
Brazil has many industry sites, with a wide range of specialties, such as soy processing, automobilist, food and drinks, among others. Considering that direct heating and process heat represent 77% of industry’s overall energy consumption [1], the opportunity for new solutions is evident Most of these plant sites have a steam generator designed to supply steam at a highpressure level, followed by pressure reducing valves (PRV), which adjust the pressure according to process needs. This device operates by applying a throttling section to the steam flow, promoting a pressure drop. The PRT consists of a compact turbo generator that controls the pressure reduction according to the process needs It has the added benefit of electricity generation, contributing to the whole plant’s energy efficiency, alongside with cost reduction regarding energy consumption.
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