Modeling a Boiler System for Efficient Space Heating
This workshop outlines the modeling of a boiler system for efficient space heating, including system configurations, control logic, and nominal conditions. Learn how to design a heating system for specific load requirements and temperature conditions to optimize energy usage and indoor comfort.
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Presentation Transcript
Modelica Training Workshop 6 Wangda Zuo, Michael Wetter Simulation Research Group Energy and Environmental Technologies Division Lawrence Berkeley National Laboratory, USA 5/29/2012
Outline Modeling a Boiler with Heat Load 2
System Configurations The heating system shall be designed to provide 20 kW, which is the load needed at -10 C outdoor temperature. From 8:00 to 18:00, there is an internal heat gain of 4kW, which should not be accounted for when sizing the system. The room volume is 180m3. To approximate the thermal storage effect of furniture and building constructions, the heat capacity of the room should be increased by a factor of three. Nominal conditions can be computed from the above conditions. They will be given in this study. 4
Control Logic The space heating shall be switched on if the outdoor temperature is below 16 C and the room temperature is below 20 C. It shall be switched off if either the outdoor temperature is above 17 C or the room temperature is above 21 C. 5
