Search Results - "Groll, E.A."

Vapor Compression Refrigeration System for Space Exploration by Chhajed, Rahul, Gomes, Alberto R, Phalak, Sanket, Shannigrahi, Subrata, Pathak, Sanjesh Kumar, Naik, Abhay, Caskey, Stephen L., Skipworth, Anthony, Brendel, Leon P. M., Groll, E.A.

“…Food preservation is going to be a key need for long term human space flight and vapor compression cooling technology is considered to be a leading enabler to…”
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Energy efficiency analysis of air cycle heat pump dryers by Braun, J.E., Bansal, P.K., Groll, E.A.

“…In this paper, the feasibility of an air heat pump (reversed Brayton) cycle for tumbler clothes dryers is investigated. The goal is to increase the energy…”
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Experimental Investigation of a Miniature-Scale Refrigeration System for Electronics Cooling by Trutassanawin, S., Groll, E.A., Garimella, S.V., Cremaschi, L.

“…A miniature-scale refrigeration system suitable for electronics cooling applications was developed and experimentally investigated. A detailed review of the…”
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Characterizing the performance of a single-screw expander in a small-scale organic Rankine cycle for waste heat recovery by Ziviani, D., Gusev, S., Lecompte, S., Groll, E.A., Braun, J.E., Horton, W.T., van den Broek, M., De Paepe, M.

“…•The performance of an open-drive single-screw expander is presented.•A total of 102 steady-state points with R245fa and SES336 have been collected.•The…”
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Optimizing the performance of small-scale organic Rankine cycle that utilizes a single-screw expander by Ziviani, D., Gusev, S., Lecompte, S., Groll, E.A., Braun, J.E., Horton, W.T., van den Broek, M., De Paepe, M.

“…•A total of 102 steady-state points with R245fa and SES336 have been collected.•R245fa led to 10% higher power output despite lower expander isentropic…”
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A cost-based method for comparing alternative refrigerants applied to R-22 systems by DOUGLAS, J. D, BRAUN, J. E, GROLL, E. A, TREE, D. R

“…This paper describes the development and application of a general purpose method for comparing alternative refrigerants. The method utilizes a single…”
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Compressed-liquid energy storage with an adsorption-based vapor accumulator for solar-driven vapor compression systems in residential cooling by Mira-Hernández, C., Weibel, J.A., Groll, E.A., Garimella, S.V.

“…•A cycle-integrated energy storage strategy for vapor compression refrigeration is proposed.•The storage subsystem is comprised of a liquid tank and an…”
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New correlation to predict the heat transfer coefficient during in-tube cooling of turbulent supercritical CO2 by PITLA, Srinivas S, GROLL, Eckhard A, RAMADHYANI, Satish

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Piston-cylinder work producing expansion device in a transcritical carbon dioxide cycle. Part I: experimental investigation by Baek, J.S., Groll, E.A., Lawless, P.B.

“…Carbon dioxide is receiving strong consideration as an alternative refrigerant substituting hydroclorofluorocarbons (HCFCs) and chlorofluorocarbons (CFCs) due…”
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Efficiencies of transcritical CO2 cycles with and without an expansion turbine by ROBINSON, D. M, GROLL, E. A

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Piston-cylinder work producing expansion device in a transcritical carbon dioxide cycle. Part II: theoretical model by Baek, J.S., Groll, E.A., Lawless, P.B.

“…A simulation model for a piston-cylinder type expansion device in which the linear motion of the piston is converted to the rotational motion of a crank via a…”
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A void fraction model for annular flow in horizontal tubes by Harms, Todd M., Li, Daqing, Groll, Eckhard A., Braun, James E.

“…An important feature of detailed system simulation models for unitary air conditioners is the calculation of charge inventory. Void fraction determination in…”
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Improving the energy efficiency of conventional tumbler clothes drying systems by Bansal, P. K., Braun, J. E., Groll, E. A.

“…This paper discusses the drying processes of four different designs of household clothes tumbler dryer using electric power input. The relative advantages and…”
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Experiences with Multi-National, Multi-Semester Design Team Projects by Groll, E.A., Krousgrill, C.M., Meckl, P.H., Hirleman, E.D.

“…This paper describes the experiences gained by the instructors of the first three multinational, multisemester design team project classes of the Global…”
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A cost-based method for comparing alternative refrigerants applied to R-22 systems: Remplacement du R22: méthode de comparaison des frigorigènes candidats by Douglas, J.D., Braun, J.E., Groll, E.A., Tree, D.R.

“…This paper describes the development and application of a general purpose method for comparing alternative refrigerants. The method utilizes a single…”
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