Emulation of semi-active flow control for evaporator superheat regulation Academic Article

abstract

• 2015 Elsevier Ltd. All rights reserved. This paper considers superheat control of a vapor compression cooling cycle. Earlier research presented a hybrid expansion valve (HEV) that combines fast-acting mechanical pressure control with a slower electronic controller to regulate superheat, providing significant improvements in superheat control over standard valves. This paper shows that these improvements can be recreated with a simpler implementation of purely electronic control and a single expansion valve actuator. Simulations explore the actuator requirements, and experiments using a commercially available thermally-actuated MEMS valve show that the control architecture is suitable for both single and multiple evaporator systems, provided the actuator is fast enough.

authors

• Rasmussen, Bryan

published proceedings

• APPLIED THERMAL ENGINEERING

author list (cited authors)

• Elliott, M., & Rasmussen, B. P.

citation count

• 3

complete list of authors

• Elliott, Matthew||Rasmussen, Bryan P

publication date

• January 2015

publisher

• Elsevier  Publisher

published in

• Applied Thermal Engineering  Journal

keywords

• Actuators
• Architectures
• Automatic Control
• Performance Analysis
• Valves

Digital Object Identifier (DOI)

• 10.1016/j.applthermaleng.2015.05.066

start page

• 51

end page

• 61

volume

• 89

URL

• http://dx.doi.org/10.1016/j.applthermaleng.2015.05.066