Systems approach to walk-off problems for dish-type solar thermal power systems

Conference · Mon Aug 01 00:00:00 EDT 1983 · Proc., Intersoc. Energy Convers. Eng. Conf.; (United States)

OSTI ID:5401685

Jaffe, L D; Levin, R R; Moynihan, P I; Nesmith, B J; Owen, W A; Roschke, E J; Starkey, D J; Thustesen, T O

''Walk-off'' in a dish-type solar thermal power system is a failure situation in which the concentrator remains fixed while the spot of concentrated sunlight slowly moves across the face of the receiver. the intense local heating may damage the receiver and nearby equipment. Passive protection has advantages in minimizing damage, but in a fully passive design the receiver must be able to withstand full solar input with no forced fluid circulation during the walk-off. An active walk-off emergency subsystem may include an emergency detrack or defocus mechanism or sun-blocking device, emergency power, sensors and logic to detect the emergency and initiate protective action, and cooling or passive protection of emergency and non-emergency components. Each of these elements is discussed and evaluated in the paper.

• Research Organization: Jet Propulsion Laboratory, California Institute of Technology
• OSTI ID: 5401685
• Report Number(s): CONF-830812-
• Journal Information: Proc., Intersoc. Energy Convers. Eng. Conf.; (United States), Vol. 1; Conference: 18. intersociety energy conversion engineering conference, Orlando, FL, USA, 21 Aug 1983
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
SOLAR THERMAL POWER PLANTS
FAILURE MODE ANALYSIS
COOLING
DAMAGE
EQUIPMENT PROTECTION DEVICES
HEATING
PARABOLIC DISH COLLECTORS
CONCENTRATING COLLECTORS
EQUIPMENT
PARABOLIC COLLECTORS
POWER PLANTS
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR POWER PLANTS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
THERMAL POWER PLANTS
140703* - Solar Thermal Power Systems- Distributed Collector