The Energy-Saving Analysis of District Heating System

2012 ◽  
Vol 193-194 ◽  
pp. 152-156
Author(s):  
Xian Liang Yang ◽  
Juan Juan Chen ◽  
Guo Hua Shi
Keyword(s):  
Power Consumption ◽  
Energy Saving ◽  
District Heating ◽  
Heating System ◽  
District Heating System ◽  
Quality Adjustment ◽  
Quantitative Ratio ◽  
Secondary Network ◽  
Quantity Adjustment ◽  
Adjustment Scheme

This paper introduces the adjustment curve equations of district heating system commonly used in secondary network. On this basis, adjustment curve equations of the adjustment that combines quantity adjustment and quality adjustment are proposed. Then taken a community in Zhangjiakou as an example, we compare the power consumption of the adjustment scheme proposed in the paper with that of quality adjustment and quality adjustment with different quantitative ratio in each period. The analysis shows that the adjustment scheme has much more potential in energy-saving.

The Analysis of Adjustment Modes of District Heating System

2014 ◽  
Vol 919-921 ◽  
pp. 1730-1734
Author(s):  
Song Ling Wang ◽  
Xian Liang Yang ◽  
Juan Juan Chen
Keyword(s):  
Power Consumption ◽  
Control Strategy ◽  
District Heating ◽  
Heating System ◽  
District Heating System ◽  
Heating Systems ◽  
Quality Adjustment ◽  
Quantitative Ratio ◽  
Secondary Network ◽  
Quantity Adjustment

In order to reduce the power consumption of circulating pump in secondary network., the adjustment that combines quantity adjustment and quality adjustment is proposed in the paper;and the control strategy and adjustment equations in different stages of this adjustment mode are present. Then taken a community in Zhangjiakou as an example, the adjustment curve of this mode in indirectconnected heating systems and direct-connected heating systems are obtained. Finally the power consumptions of the adjustment mode proposed in the paper with that of quality adjustment and quality adjustment with different quantitative ratio in each period are compared; the result indicates that the adjustment mode has more potential in energ-saving.

Energy-Saving Analysis about Control Strategy of District Heating System

2014 ◽  
Vol 672-674 ◽  
pp. 554-557
Author(s):  
Cai Xia Hao ◽  
Hai Ping Zhang ◽  
Chun Ping Lu
Keyword(s):  
Energy Saving ◽  
Control Strategy ◽  
District Heating ◽  
Heating System ◽  
Operating Mode ◽  
Variable Frequency ◽  
Operating Parameters ◽  
Cogeneration Plant ◽  
District Heating System ◽  
Operating Modes

Three operating modes of district heating system are introduced and the operating parameters are compared. To find out the most energy-saving one, an experiment is carried out in a cogeneration plant. An operating mode using variable frequency circulating pump for flow control at a constant supply and return water temperature difference is proposed. The conclusion shows that using variable frequency circulating pump is a more energy-saving method.

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