Experimental comparison of condensers and evaporators for use in both bottom-mount and side-by-side refrigerator/freezer units

2006 ◽  
Vol 220 (2) ◽  
pp. 215-222
Author(s):  
L M Chamra ◽  
P J Mago ◽  
G J Zdaniuk
Keyword(s):  
Sine Wave ◽  
Performance Characteristics ◽  
Experimental Comparison ◽  
Fin Spacing

The performance characteristics of several evaporators and condensers with different geometries for use in both bottom-mount and side-by-side refrigerator/freezer units are discussed and compared. This comparison was performed on the basis of the units' material, the type of fins, the fin spacing, and the overall length of the tubes. The condenser that showed the best performance for the bottom-mount and side-by-side refrigerator/freezer applications was made with copper-rifled tubes with sine-wave aluminium fins. Similarly, the evaporator that showed the best performance for the bottom-mount and side-by-side refrigerator/freezer units was made with copper-rifled tubes with plain aluminium fins.

Simulation and Analysis of Microspines Interlocking Behavior on Rocky Surfaces: An In-Depth Study of the Isolated Spine

2020 ◽  
Vol 12 (6) ◽  
Author(s):  
Saverio Iacoponi ◽  
Marcello Calisti ◽  
Cecilia Laschi
Keyword(s):  
Analytic Functions ◽  
Extreme Environments ◽  
Performance Characteristics ◽  
Experimental Comparison ◽  
Rock Interaction ◽  
New Model ◽  
Field Robotics ◽  
Depth Study ◽  
Spine Model ◽  
Single Spine

Abstract Microspine grippers address a large variety of possible applications, especially in field robotics and manipulation in extreme environments. Predicting and modeling the gripper behavior remains a major challenge to this day. One of the most complex aspects of these predictions is how to model the spine to rock interaction of the spine tip with the local asperity. This paper proposes a single spine model, in order to fill the gap of knowledge in this specific field. A new model for the anchoring resistance of a single spine is proposed and discussed. The model is then applied to a simulation campaign. With the aid of simulations and analytic functions, we correlated performance characteristics of a spine with a set of quantitative, macroscopic variables related to the spine, the substrate and its usage. Eventually, this paper presents some experimental comparison tests and discusses traversal phenomena observed during the tests.

Effects of sine wave contexts on compensation for coarticulation

2009 ◽  
Author(s):  
Navin Viswanathan ◽  
James S. Magnuson ◽  
Carol A. Fowler
Keyword(s):  
Sine Wave
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