What is boiler shock? - It's a type of heat stress that can lead to damage and serious structural failure of the unit

摘要

The terms "boiler shock" and "thermal shock" describe a type of heat-stress in greenhouse boilers that can lead to damage and serious structural failure of the boiler vessel. Boiler shock, in essence, is caused when cold water is pumped back into a hot boiler. You may be facing problems with boiler shock when you are trying to get more hot water from a heat plant than what it was built to deliver. If you have ever made preserves, such as jams or pickles, you may have seen the effect of thermal shockin your own kitchen. Before you can fill homemade jam into glass jars, they need to be heated to the same temperature as the boiling jam. If you try to fill hot jam into a cold jar, the glass will very likely crack into hundreds of shards. Likewise, if you heat up your jars too much, and you let your jam cool down too much before filling, you'll end up with the same mess of spilled jam and shredded glass on your kitchen counter.