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Dynamisk modell för uppvärmningsprocess av fastigheter

Georgallis, Ioannis LU and Petrus, Bogdan Mihai LU (2021) In CODEN:LUTEDX/TEIE EIEL05 20201
Industrial Electrical Engineering and Automation
Abstract
This thesis focuses on how properties of a heating process can be used to determine a control law for a controller in a HVAC system. A test environment has been set up with a ventilation system and a heat source. The test environment is controlled by a PLC. The process transfer function has been modeled based upon Newton's cooling law. The time constant for the open-loop system has been estimated based on data collected of temperature measurements of the test environment during a step response. Two tests took place with 2.8- and 4.2-times faster response time for closed-loop system than for the open-loop system. The system is regulated by a PI controller. The regulator's gain factor and integration time are calculated using pole placement... (More)
This thesis focuses on how properties of a heating process can be used to determine a control law for a controller in a HVAC system. A test environment has been set up with a ventilation system and a heat source. The test environment is controlled by a PLC. The process transfer function has been modeled based upon Newton's cooling law. The time constant for the open-loop system has been estimated based on data collected of temperature measurements of the test environment during a step response. Two tests took place with 2.8- and 4.2-times faster response time for closed-loop system than for the open-loop system. The system is regulated by a PI controller. The regulator's gain factor and integration time are calculated using pole placement based on the process model. (Less)
Abstract (Swedish)
Detta examensarbete fokuserar på hur uppvärmningsprocessegenskaper kan användas för att bestämma en styrlag till en regulator inom fastighetsautomation. En testmiljö har satts upp med ventilationssystem och värmekälla. Testmiljön styrs av en PLC. Systemets överföringsfunktion har beräknats ifrån Newtons avsvalningslag. Tidskonstanten för det öppna systemet har beräknats utgående utifrån temperaturmätningar i testmiljö under ett stegsvar. Två test med reglering har utförts i ett rum där tidskonstanten har varit 2,8 respektive 4,2 gånger snabbare än för rummet utan reglering. Systemets reglering sker med en PI-regulator. Regulatorns förstärkning och integrationstid beräknas med polplacering utgående från den framtagna processmodellen.
Please use this url to cite or link to this publication:
author
Georgallis, Ioannis LU and Petrus, Bogdan Mihai LU
supervisor
organization
alternative title
Dynamic model for heating process of buildings
course
EIEL05 20201
year
type
M2 - Bachelor Degree
subject
keywords
Undercentral, kaskadreglering, tidskonstant, PLC, dynamisk modell, Laplacetransform, PI-regulator.
publication/series
CODEN:LUTEDX/TEIE
report number
3095
language
Swedish
id
9041977
date added to LUP
2025-02-05 17:19:55
date last changed
2025-02-05 17:19:55
@misc{9041977,
  abstract     = {{This thesis focuses on how properties of a heating process can be used to determine a control law for a controller in a HVAC system. A test environment has been set up with a ventilation system and a heat source. The test environment is controlled by a PLC. The process transfer function has been modeled based upon Newton's cooling law. The time constant for the open-loop system has been estimated based on data collected of temperature measurements of the test environment during a step response. Two tests took place with 2.8- and 4.2-times faster response time for closed-loop system than for the open-loop system. The system is regulated by a PI controller. The regulator's gain factor and integration time are calculated using pole placement based on the process model.}},
  author       = {{Georgallis, Ioannis and Petrus, Bogdan Mihai}},
  language     = {{swe}},
  note         = {{Student Paper}},
  series       = {{CODEN:LUTEDX/TEIE}},
  title        = {{Dynamisk modell för uppvärmningsprocess av fastigheter}},
  year         = {{2021}},
}