Results 41 to 50 of about 6,892 (227)

Optimum operating pressure ratios for scroll compressors.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1989
A scroll compressor has a built-in volume ratio, and ideally it should be operated under a built-in pressure ratio condition that is a function of the built-in volume ratio. but in actual operation, the compressor shows its maximum efficiency at a pressure ratio that differs from the built-in pressure ratio.
Yanagisawa, T., Cheng, M. D., Fukuta, M., Shimizu, T.   +3 more
openaire   +3 more sources

From barriers to benefits: A personalized sleep intervention enhances sleep duration and emotional health in chronic short sleepers

British Journal of Psychology, EarlyView.
Abstract This pilot study evaluated a personalized sleep intervention incorporating motivational interviewing techniques to address sleep barriers, along with tailored sleep hygiene and extension for chronic short sleepers. Eleven university students completed a 14‐day sequential intervention (baseline, sleep hygiene and a combined phase adding 90‐min ...
Wei Wang, Ho Yin Derek Ma, Ming Ming Chiu, Shu Fai Cheung, C. Harry Hui, Mark Lawrence Wong, Janet Hui‐wen Hsiao, Rong Wei Sun, Yeuk Ching Lam, Akira Basa Okabe, Chin Ho Chan, Esther Yuet Ying Lau   +11 more
wiley   +1 more source

Durability of domestic scroll compressor systems [PDF]

WIT Transactions on Engineering Sciences, 2009
A thorough surface examination of the main components of a scroll compressor after part uses was conducted. This was performed in order to identify the possible tribo-mechanical effects (abrasion, cavitation, erosion etc) which occur on the substrate of these components. Three dimensional interferometer surface scanning and scanning electron microscopy
I. Tzanakis, M. Hadfield, Z. Khan
openaire   +1 more source

Variable cycle gas turbine engines [PDF]

, 1977
A technique, method, and apparatus were designed for varying the bypass ratio and modulating the flow of a gas turbine engine in order to achieve improved mixed mission performance.
Foster, T., Johnson, J. E.
core   +1 more source

Patents and Supra‐Competitive Prices: Evidence From Consumer Products

Journal of Empirical Legal Studies, EarlyView.
ABSTRACT A patent system is a central tool in innovation policy. The prospect of monopolistic pricing supposedly encourages firms to innovate. However, there is scant empirical evidence supporting the existence of higher markups for patent‐protected products.
Gaétan de Rassenfosse, Ling Zhou
wiley   +1 more source

Experimental Study on Performance of Heat Pump Cycle of Quasi Two-stage Compression for Electric Vehicle Air-conditioning with Scroll Compressor

Zhileng xuebao, 2018
To solve the problem of heating in electric vehicle air-conditioning systems and suppressing the high discharge temperature of the compressor in winter, a quasi-two-stage compression heat pump system for electric vehicles has been designed using flash ...
Tang Jingchun, Li Chenkai, Ye Bin, Meng Xiaolei   +3 more
doaj  

Key Technologies and Application of Electric Scroll Compressors: A Review

Energies
The electric scroll compressor is driven by a built-in electric motor that rotates the scroll disk. It is known for its simple structure, adjustability, and high efficiency, making it highly promising for various applications.
Yubo Zhang, Bin Peng, Pengcheng Zhang, Jian Sun, Zhixiang Liao   +4 more
doaj   +1 more source

Geometrical Model and Optimization of Scroll Compressor Based on Involute of Circle with Variable Radii

Shanghai Jiaotong Daxue xuebao, 2023
Considering the problems that quantitative analysis and optimization of the geometrical model of scroll compressor created from involute of circle with variable radii are incomplete, the changing trend of the working chamber volume from the beginning of ...
PENG Bin, LIU Huixin, TAO Yaohui
doaj   +1 more source

Performance evaluation and optimal design of supermarket refrigeration systems with supermarket model "SuperSim", Part I: Model description and validation [PDF]

, 2011
This is the post-print version of the final paper published in International Journal of Refrigeration. The published article is available from the link below.
Arias, Arias, Chan, EnergyPlus, Fischer, Ge, Ge, Howell, Howell, S.A. Tassou, Tassou, Tassou, Walker, Walker, Y.T. Ge   +14 more
core   +1 more source

From the Unconscious to the Algorithm: Platform Mediation, Psychic Economy, and Psychoanalytic Practice

International Journal of Applied Psychoanalytic Studies, Volume 23, Issue 2, June 2026.
ABSTRACT This article offers a theoretical analysis, grounded in a critical narrative review within the Freudian‐Lacanian tradition, of how platform algorithms shape contemporary forms of subjectivity and raise new questions for psychoanalytic practice.
Mariana Salles Kehl, Heloisa Caldas
wiley   +1 more source