Temperature stratification in hot water solar thermal storage tanks

Conference · Thu Jan 01 04:00:00 EST 1981 · AIAA Pap.; (United States)

OSTI ID:5168208

Koldhekar, S M

The overall efficiency of solar domestic hot water systems using liquid sensible heat storage can be enhanced by temperature stratification in the storage tank. An experimental apparatus was designed to study how the storage tank stratified for three different hot water load schedules, three solar inputs, three flow rates, and two inlet configurations. Criteria were developed to evaluate the effect of these variables on temperature stratification in the preheat tank. A hot water load schedule and the ratio of flow rates in the collector-heat exchanger and heat exchanger-storage loops were selected using these criteria. A novel hot water load schedule was designed which will provide the greatest degree of temperature stratification.

• Research Organization: ITT, Glendale, Calif, USA
• OSTI ID: 5168208
• Report Number(s): CONF-810106-
• Conference Information: Journal Name: AIAA Pap.; (United States) Journal Volume: 81-0368
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140907* -- Solar Thermal Utilization-- Water Heating
APPLIANCES
CONTAINERS
ENERGY STORAGE
EQUIPMENT
FLOW RATE
HEAT EXCHANGERS
HEAT STORAGE
HEATERS
SENSIBLE HEAT STORAGE
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR WATER HEATERS
STORAGE
STRATIFICATION
TANKS
TEMPERATURE GRADIENTS
WATER HEATERS