Forecasting the energy-saving benefits of variable-speed pumps

• Autorzy: Fu Y. , Cai Y. , Wu K.
• Języki publikacji: EN

Abstrakty

EN

By calculating the energy-saving benefits of a variable-speed pump, the relation between back pressure and energy-saving benefits is analyzed. Based on the energy-saving benefit calculation for four different pump types using a non-dimensional method, it is shown that when the non-dimensional back pressure, h, and the non-dimensional flow, Q, are equal, then the corresponding non-dimensional energy-saving benefit [omega] of variable-speed control are quite close each to other, thereby advancing a forecasting method of energy-saving benefits of variable-speed control. When the method is used to forecast the energy-saving benefits of pumps whose specific speed is between 15 and 190 and the flow - between 5 and 200 m3/h (subject to the condition h<; 0.9, Q> 0.5), the error will not exceed 6.55% and thus the method proves to be of reference value for the evaluation of the variable-speed energy-saving benefits of other pumps.

Słowa kluczowe

EN

pump; back pressure; variable-speed energy-saving; forecasting

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2006
• Tom: Vol. 10, No 1
• Strony: 27--33
• Opis fizyczny: Bibliogr. 2 poz., 2 rys., 3 tab.

Twórcy

autor

Fu Y.

autor

Cai Y.

autor

Wu K.

• Wuhan University of Science and Technology, Wuhan 430070, China,

Bibliografia

• [1] Fu Y, Wu K and Cai Y 2005 World Pumps 461 34
• [2] Bernier M A and Bourrel B 1999 ASHRAE J. 12 37