two pipe direct return system

Analyses three projects that the differential pressure controllers are used in two-pipe heating systems with household heat metering,recommends some selective principles of three projects,points out that gravity head may not be considered when hydraulic calculation is operated in the design condition,and two-pipe heating systems with household heat metering should be the direct-return system.

对压差控制阀在分户计量双管供暖系统中的三个应用方案进行了分析 ,给出了各方案的选择原则 ,并指出分户计量双管供暖系统在设计工况下进行水力计算时 ,自然作用压头可以不予考虑 ,户内和户外系统应采用异程式。

Combining with the demonstration project on solar heating of Tibet Science and Technology Hall in Lhasa City,the design of solar collector,heat transfer medium on the side of collector,thermal storage mode,thermal storage water tank,radiating equipment and control system in the direct heating system with solar energy is studied.

结合拉萨市西藏科技厅太阳能供暖示范工程,对太阳能直接供暖系统中太阳能集热器、集热器侧传热介质、蓄热方式、蓄热水箱、散热设备、控制系统的设计进行了研究。

Based on the characteristics of one-pipe-series-loop heating system,the individual metering charge using heat-time meter for one-pipe-series-loop heating system is presented.

针对垂直单管式供暖系统的特点,提出采用热时表实现垂直单管式供暖系统分户计量收费。