Impact of Cold Water Temperature Variation on the Energy Efficiency of a Water Supply Pump System with Variable Demand

Boris Zvezdov Kostov

doi:10.15866/ireme.v12i7.14953

Impact of Cold Water Temperature Variation on the Energy Efficiency of a Water Supply Pump System with Variable Demand

Boris Zvezdov Kostov^(1*)

^(*) Corresponding author

Authors' affiliations

DOI: https://doi.org/10.15866/ireme.v12i7.14953

Abstract

This paper presents a theoretical investigation of the impact of two variable factors, temperature and water demand, on the energy consumption of a given pump system used for industrial and household needs. The aim is to provide more detailed information that can be used to better design and exploit of such systems. In addition, an innovative method for the quantitative evaluation of the difference in energy efficiency using energy consumption as a criteria of effectiveness has been given.An analysis of the results, achieved with this method confirm the accuracy of the results found for systems consisting of polyethylene pipes, which are commonly used in these systems, rather than the steel pipes. Because of the lack of any previous research, it is important to note that the influence of the water temperature change on the effectiveness of the frequency method of flow rate regulation, has also been investigated. The results indicate that in some cases this effect is significant (the worst of the effect is about 5 %) and cannot be neglected
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Keywords

Pump Systems; Energy Efficiency; Frequency Method of Flow Rate Regulation

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References

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