Control system analysis for off-peak auxiliary heating of passive solar systems
Abstract
A computer simulation method is presented for the design of an electrical auxiliary energy system for passive solar heated structures. The system consists of electrical mats buried in the ground underneath the structure. Energy is stored in the ground during utility off-peak hours and released passively to the heated enclosure. An optimal control strategy is used to determine the system design parameters of depth of mat placement and minimum instaled electrical heating capacity. The optimal control applies combinations of fixed duration energy pulses to the heater, which minimize the room temperature error-squared for each day, assuming advance knowledge of the day's weather. Various realizable control schemes are investigated in an attempt to find a system that approaches the performance of the optimal control system.
- Authors:
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 5625298
- Report Number(s):
- LA-UR-80-246; CONF-800101-7
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Conference
- Resource Relation:
- Conference: Systems simulation and economics analysis conference, San Diego, CA, USA, 23 Jan 1980
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; AUXILIARY HEATING; CONTROL SYSTEMS; OFF-PEAK ENERGY STORAGE; PASSIVE SOLAR HEATING SYSTEMS; COMPUTERIZED SIMULATION; ELECTRIC HEATING; OFF-PEAK POWER; PERFORMANCE; SENSIBLE HEAT STORAGE; SOILS; ELECTRIC POWER; ENERGY STORAGE; EQUIPMENT; HEAT STORAGE; HEATING; HEATING SYSTEMS; POWER; SIMULATION; SOLAR EQUIPMENT; SOLAR HEATING SYSTEMS; SPACE HEATING; STORAGE; 140901* - Solar Thermal Utilization- Space Heating & Cooling
Citation Formats
Murray, H S, Melsa, J L, and Balcomb, J D. Control system analysis for off-peak auxiliary heating of passive solar systems. United States: N. p., 1980.
Web.
Murray, H S, Melsa, J L, & Balcomb, J D. Control system analysis for off-peak auxiliary heating of passive solar systems. United States.
Murray, H S, Melsa, J L, and Balcomb, J D. 1980.
"Control system analysis for off-peak auxiliary heating of passive solar systems". United States. https://www.osti.gov/servlets/purl/5625298.
@article{osti_5625298,
title = {Control system analysis for off-peak auxiliary heating of passive solar systems},
author = {Murray, H S and Melsa, J L and Balcomb, J D},
abstractNote = {A computer simulation method is presented for the design of an electrical auxiliary energy system for passive solar heated structures. The system consists of electrical mats buried in the ground underneath the structure. Energy is stored in the ground during utility off-peak hours and released passively to the heated enclosure. An optimal control strategy is used to determine the system design parameters of depth of mat placement and minimum instaled electrical heating capacity. The optimal control applies combinations of fixed duration energy pulses to the heater, which minimize the room temperature error-squared for each day, assuming advance knowledge of the day's weather. Various realizable control schemes are investigated in an attempt to find a system that approaches the performance of the optimal control system.},
doi = {},
url = {https://www.osti.gov/biblio/5625298},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1980},
month = {Tue Jan 01 00:00:00 EST 1980}
}