Local entropy generation analysis of a rotary magnetic heat pump regenerator

Conference · Sun Apr 01 04:00:00 EDT 1990

OSTI ID:6293901

Drost, M K; White, M D

The rotary magnetic heat pump has attractive thermodynamic performance but it is strongly influenced by the effectiveness of the regenerator. This study uses local entropy generation analysis to evaluate the regenerator design and to suggest design improvements. The results show that performance of the proposed design is dominated by heat transfer related entropy generation. This suggests that enhancement concepts that improve heat transfer should be considered, even if the enhancement causes a significant increase in viscous losses (pressure drop). One enhancement technique, the use of flow disrupters, was evaluated and the results showed that flow disrupters can significantly reduce thermodynamic losses.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6293901
• Report Number(s): PNL-SA-17787; CONF-901194--8; ON: DE91005520
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
ENERGY TRANSFER
ENTROPY
HEAT PUMPS
HEAT TRANSFER
PARAMETRIC ANALYSIS
PHYSICAL PROPERTIES
REGENERATION
THERMAL ANALYSIS
THERMODYNAMIC PROPERTIES