Promising control alternatives for solar water heating systems

Journal Article · Thu Aug 01 04:00:00 EDT 1985 · J. Sol. Energy Eng.; (United States)

DOI:https://doi.org/10.1115/1.3267681· OSTI ID:5061186

Wuestling, M D; Duffle, J A; Klein, S A

Although the performance of solar domestic hot water (SDHW) systems has been well studied, there are several promising control alternatives that have not been thoroughly investigated. Reduced constant collector fluid flow rates, variable collector flow rates, and variable volume storage are several alternative strategies. This paper presents the results of an analytical study using the TRNSYS simulation program in which the thermal performance of SDHW systems utilizing alternative control strategies are compared while operating under realistic conditions in several different climates of the United States. The effects on system performance of time of year, collector area and quality, preheat storage tank volume and energy losses, occurrence of mixing the preheat storage tank, controller temperature deadbands, auxiliary set temperature, total daily usage, and load distribution are investigated.

• Research Organization: Solar Energy Laboratory, University of Wisconsin-Madison, Madison, WI
• OSTI ID: 5061186
• Journal Information: J. Sol. Energy Eng.; (United States), Journal Name: J. Sol. Energy Eng.; (United States) Vol. 107:3; ISSN JSEED
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140907* -- Solar Thermal Utilization-- Water Heating
141000 -- Solar Collectors & Concentrators
APPLIANCES
COMPUTER CODES
COMPUTERIZED SIMULATION
CONTROL
EQUIPMENT
FLOW RATE
FLUID FLOW
HEATERS
HEATING
PERFORMANCE
SIMULATION
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR HEATING
SOLAR WATER HEATERS
SOLAR WATER HEATING
T CODES
TEMPERATURE CONTROL
WATER HEATERS
WATER HEATING