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The Analysis for Hydraulic Status of Central Heating Network in the Condition of Heat Metering

Author: LiangBo
Tutor: ZhangZiPing
School: Hebei University of Engineering
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Heat metering Heat pipe network Hydraulic conditions Operation Regulation
CLC: TU995
Type: Master's thesis
Year: 2011
Downloads: 45
Quote: 0
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Abstract


Metering heating is a major aspect of our central heating energy saving measures . Quantify the heat in the form of goods , users take the heat , how much heat directly affect their pay fee , allows users to take heat on demand , and avoid the waste of heat ; metering heating can improve the thermal comfort of the user , the user can according to their own the demand , self- regulating temperature control device ; metering heating compared with form of nonstochiometry heating efficiency of 20 to 30 % , from the environmental point of view , to reduce the burning of coal and reduce the pollution of the atmosphere . Metering heating system started soon , learn from the experience of many foreign metering heating , there are still some problems in the transformation of the original form of central heating . Original interior heating pipe network forms NA , heat measurement , heat , fee calculation and collection method , the user to adjust the hydraulic imbalance caused by changes in the characteristics of the pipe network and cycle power matching . This article describes the heating pipe network in the form of heat measured in several ways and applies to the measurement of the heating system ; elaborated pipe network hydraulic imbalance and several adjustment device features and applications ; pipeline network for measuring heating before and after reconstruction hydraulic conditions , the experimental simulation of the form of the original heating and metering heating form of pipe network characteristics ; draw pressure diagram of the different hydraulic conditions , reaction transformation before and after the adjustment device , and to make adjustments a reasonable adjustment device and run strategy ; selected according to the requirements of the pipe network before and after reconstruction regulation to change the past cycle power plants led variable flow regulation and implementation of client - driven , cycle power plant auxiliary variable flow regulation means . Only satisfy the needs of the user to take heat , but also to avoid the adjacent user interference , cycle power plants can make adjustments to adapt to the variability of the pipe network characteristics to adapt to the transformation of heat metering , stable central heating pipe network hydraulic conditions .

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CLC: > Industrial Technology > Building Science > Municipal Engineering > Urban central heating
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