Title :
Effect of thermostat time constant on temperature control and energy consumption
Author :
Wen, Jin ; Smith, Theodore F.
Author_Institution :
Dept. of Mech. Eng., Iowa Univ., Iowa City, IA, USA
Abstract :
The objective of this study is to compare the temperature control, occupant comfort, and energy usage for four thermostats with different time constants installed on a wall in a real building zone equipped with a commercial variable air volume (VAV) unit with hydronic reheat coil and a direct digital control (DDC) system. This study was performed using experiments on a VAV system controlled by thermostats with different time constants. The experimental results verify that a sluggish thermostat causes higher energy consumption, less occupant comfort, and a lack of temperature control
Keywords :
HVAC; environmental engineering; power consumption; temperature control; thermostats; HVAC systems; building zone; commercial variable air volume unit; direct digital control system; energy consumption; hydronic reheat coil; occupant comfort; temperature control; thermostat time constant; Cities and towns; Delay; Energy consumption; Mathematical model; Mechanical engineering; Sensor phenomena and characterization; Temperature control; Temperature sensors; Thermal sensors; Thermostats;
Conference_Titel :
Sensors for Industry, 2001. Proceedings of the First ISA/IEEE Conference
Conference_Location :
Rosemont, IL
Print_ISBN :
0-7803-6659-X
DOI :
10.1109/SFICON.2001.968539
