Application and Economic Analysis of Water Jet Pump in New District Heating System

The problem of hydraulic imbalance among buildings and building heat users in the traditional heating industry is an important reason for the thermal imbalance of the heating system and leads to a serious waste of energy and resources. In the urban heating network, the thermal loss caused by thermal...

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Bibliographic Details
Published in:Procedia engineering 2017, Vol.205, p.996-1003
Main Authors: Peng, Yin, Wenju, Hu, Deying, Li, Xiaoyu, Li, Xiping, Zeng
Format: Article
Language:English
Subjects:
Emission reduction
Energy saving
Heating system
Hydraulic imbalance
Jet pump
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Summary:The problem of hydraulic imbalance among buildings and building heat users in the traditional heating industry is an important reason for the thermal imbalance of the heating system and leads to a serious waste of energy and resources. In the urban heating network, the thermal loss caused by thermal imbalance accounts for about 25% of the energy consumption of the heating, the conventional solution of increasing secondary network circulating water flow is not only limited adjustment effect, and greatly increases the power consumption of circulating water pump, which has a tremendous potential for energy saving. In view of the existing heating network problems, this article introduces the thermodynamic working principle, working characteristics and restriction conditions of working efficiency of the jet pump. And the specific application of the jet pump in the actual project is analyzed in detail, and the operation energy consumption of the injection pump system and the original heating system is compared and analyzed. Statistics show that average power saving rate can reach 20.24%, and average heat saving rate is up to 12.52% or more. which reflects the jet pump technology has great potential of energy saving in the city central heating system.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2017.10.158