Josh Hays Mechanical Engineering Master's Thesis Defense
- Friday, April 12, 2019 at 10:00am
- Roberts Hall, room 218 - view map
Energy Modeling Development and Calibration For a Mini-District Energy Loop Assessment Comprised of a set of Campus Buildings
District energy loops are comprised of a network of buildings connected in a water-source loop with utilization of heat pumps to allow for buildings to share thermal energy. To assess the feasibility of creating a district energy loop, the heat sharing capabilities of the proposed interconnected buildings needs to be analyzed. This paper develops a method to assess a mini-district energy loop from historical utility data. Energy modeling was used to create a simple building model from building construction specifications and given inputs from the Facility Engineers on Montana State University’s campus.
With the energy model developed, the historical utility data was compared to the hourly heat demand and electricity consumption for the building on an outdoor temperature basis. Calibration techniques for heat demand were comprised of increasing or decreasing the outdoor air consumption and the base heat demand. Electricity consumption was calibrated by altering the equipment plug load in the laboratory spaces.
The simulated data was validated with monitored data for the hourly heat demand for a high-energy use laboratory building on MSU’s campus. This simple energy model was reconfigured to represent another high-energy use laboratory building at MSU by altering building envelope dimensions, and then re-applying calibration techniques to generate hourly heating and cooling data. Converting the model to be heat-pump compatible allowed for internal thermal energy sharing within the building to occur. Hourly heat demand and hourly heat availability were defined for external thermal energy sharing for a high-energy use laboratory building. After which, heat sources, heat sinks, and thermal energy storage tanks were assessed for determining the feasibility of a district energy loop.
- Department of Mechanical & Industrial Engineering