Performance evaluation of a modified R290 dual-evaporator refrigeration cycle using two-phase ejector as expansion device

Energy ◽  
2020 ◽  
Vol 212 ◽  
pp. 118614 ◽  
Author(s):  
Yu Gao ◽  
Guogeng He ◽  
Dehua Cai ◽  
Mingjing Fan
Keyword(s):  
Performance Evaluation ◽  
Refrigeration Cycle ◽  
Two Phase

Supersonic two-phase flow of CO2 through converging–diverging nozzles for the ejector refrigeration cycle

2009 ◽  
Vol 32 (6) ◽  
pp. 1195-1202 ◽  
Author(s):  
Masafumi Nakagawa ◽  
Menandro Serrano Berana ◽  
Akinori Kishine
Keyword(s):  
Two Phase Flow ◽  
Refrigeration Cycle ◽  
Phase Flow ◽  
Two Phase

scholarly journals Experimental study on the behavior of the two phase flow shock waves occurring in the ejector refrigeration cycle

2016 ◽  
Vol 3 (6) ◽  
pp. 16-00255-16-00255 ◽  
Author(s):  
Haruyuki NISHIJIMA ◽  
Kyohei TSUCHII ◽  
Masafumi NAKAGAWA
Keyword(s):  
Experimental Study ◽  
Shock Waves ◽  
Two Phase Flow ◽  
Refrigeration Cycle ◽  
Phase Flow ◽  
Two Phase

scholarly journals DEVELOPMENT OF PERFORMANCE EVALUATION INDICATORS FOR SOCIAL ENTERPRISES: THE USE OF DELPHI TECHNIQUE

2021 ◽  
Vol 22 (6) ◽  
pp. 1396-1415
Author(s):  
Petra Taušl Procházková ◽  
Marta Nosková ◽  
Kristýna Machová ◽  
Veronika Velíšková
Keyword(s):  
Performance Evaluation ◽  
Delphi Technique ◽  
Social Enterprises ◽  
Bottom Line ◽  
Two Phase ◽  
Empirical Examination ◽  
Practical Usefulness ◽  
Local Areas ◽  
Need To Evaluate ◽  
Points Of View

Social enterprises have become a natural part of the economy. Their importance is significantly increasing, as well as the need to evaluate their performance. There are different points of view on the indicators and methods used to evaluate their performance and they often lack simplicity and are costly and time consuming. Thus, this study aims to identify and discuss performance evaluation indicators for social enterprises with particular focus on identifying a set of indicators that might be applied without placing high demands on each social enterprise. A two-phase approach was adopted and applied in the Czech social entrepreneurship environment. First, the Delphi technique was used to get a set of indicators for each of the areas of the triple bottom line principles. Consequently, an empirical examination of these indicators using a set of social enterprises was conducted. Final results were determined using Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). As a result, a set of twelve indicators that cover social, economic, environmental and local areas are proposed. These indicators reflect the opinions of experts in the field as well as their practical usefulness, which is discussed at the end of the paper.

Sign in / Sign up

Export Citation Format

Share Document