Home
  Available Modules
 
Index
Basics
Equipment
Applications
Glossary
 
   
  Equipment
 

Gas Technologies: Hot Water

Platens and molds can be heated by running hot water through them. This water is heated between 70-200°F from an outside source such as a boiler or water heater either electrically or using natural gas.

Common Processes:
Molding, Other

Boilers (both steam and hot water designs) are designed to burn various fuels and transfer the released heat to water and steam (in steam boilers) and to water (in water boilers). Codes and standards address the allowable heat transfer rates based on the internal heating surface area. All boilers are classified based on working pressure, fuel used, size and shape and other factors. These factors impact initial cost, performance and space requirements. All systems allow for connecting to a piping system, delivering the heated steam or water to the point of use, and returning cooled fluids to the boiler. Natural gas-fired boilers are commonly applied in either low- or high-pressure designs; and, in general, operating economics favor the natural gas choice when larger volumes of steam or hot water are required.

Hot water boilers are generally applied for low-pressure use (less than 15 psig steam and up to 160 psig hot water) and are commonly available in sizes from 35,000 to over 100,000 btu/hour.

The Boiler module more fully addresses steam and hot water boiler classifications, fuel choices and overall operating economics.