燃气采暖热水炉用膨胀水箱预充压力及选型分析

膨胀水箱预充压力的大小对膨胀水箱选型及采暖系统稳定性至关重要。而市场上部分燃气采暖热水炉使用的膨胀水箱选型及预充压力不尽相同。本文旨在通过对膨胀水箱的理论及实例分析，来说明膨胀水箱预充压力不当所导致的问题，以及如何正确选择膨胀水箱型号，以免膨胀水箱型号选择过大造成资源浪费；或膨胀水箱选型过小，造成安全阀泄水。

Analyze on precharge pressure and type of expansion vessel for the gas boiler

Expansion vessel precharge pressure is very important to expansion vessel type choosing and heating system stability. Gas boiler partial expansion type and precharge pressure is various in the market, this writing mean to analysis the theory and living example, pointing out the result caused by inappropriate expansion vessel precharge pressure and tell how to choose right type of expansion vessel to avoid resource wasting by too big expansion vessel and safe valve leaking by too small expansion vessel.