Results 51 to 60 of about 211,478 (216)

Dynamic Response Characteristics Analysis and Energy, Exergy, and Economic (3E) Evaluation of Dual Loop Organic Rankine Cycle (DORC) for CNG Engine Waste Heat Recovery

Energies, 2021
Frequent fluctuations of CNG engine operating conditions make the waste heat source have uncertain, nonlinear, and strong coupling characteristics. These characteristics are not conducive to the efficient recovery of the DORC system.
Baofeng Yao, Xu Ping, Hongguang Zhang
doaj   +1 more source

Performance Study on a Single-Screw Expander for a Small-Scale Pressure Recovery System

Energies, 2016
A single-screw expander with 195 mm diameter is developed to recover pressure energy in letdown stations. An experiment system is established using compressed air as a working fluid instead of natural gas.
Guoqiang Li, Yuting Wu, Yeqiang Zhang, Ruiping Zhi, Jingfu Wang, Chongfang Ma   +5 more
doaj   +1 more source

Review of convective heat transfer enhancement with nanofluids

International Journal of Heat and Mass Transfer, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kakac, Sadik, Pramuanjaroenkij, Anchasa
openaire   +3 more sources

Parameter study of laminar flow and heat transfer in an interrupted microchannel heat sink with ribs

, 2021
The enhanced heat transfer mechanism and parameter optimization of an interrupted microchannel heat sink with rectangular ribs (IMCHS-R) was numerically studied for Reynolds number ranging from 100 to 900, using ANSYS Fluent.
Shuai, Yong,, Wang, Wei, Tan, Yufei, Shuai, Yong, Sundén, Bengt, Wang, Wei,, Su, Wentao,, Su, Wentao, Tan, Yufei,, Li, Bingxi, Sundén, Bengt,, Lund University., Li, Bingxi,   +12 more
core   +1 more source

Preparation and Thermal Model of Tetradecane/Expanded Graphite and A Spiral Wavy Plate Cold Storage Tank

Energies, 2022
A cold storage unit can store the cold energy off-peak and release it for building cooling on-peak, which can reduce the electricity load of air conditioning systems.
Hongguang Zhang, Tanghan Wu, Lei Tang, Ziye Ling, Zhengguo Zhang, Xiaoming Fang   +5 more
doaj   +1 more source

Performance comparison of liquid, vapor, and liquid–vapor injection of single-screw compressor for an air-source heat pump

AIP Advances
Refrigerant injection techniques are usually proposed to improve the performance and reliability of compressors when a single-screw compressor applied to an air-source heat pump works at low temperatures in winter.
Qiangyu Wen, Ruiping Zhi, Yuting Wu, Biao Lei, Yanjun Du   +4 more
doaj   +1 more source

Performance Analysis and Rapid Optimization of Vehicle ORC Systems Based on Numerical Simulation and Machine Learning

Energies
The organic Rankine cycle (ORC) system is an important technology for recovering energy from the waste heat of internal combustion engines, which is of significant importance for the improvement of fuel utilization. This study analyses the performance of
Xin Wang, Xia Chen, Chengda Xing, Xu Ping, Hongguang Zhang, Fubin Yang   +5 more
doaj   +1 more source

Electromagnetic enhancement of turbulent heat transfer

Physical Review E, 2008
We performed large eddy simulations (LES) of the turbulent natural convection of an electrically conductive fluid (water with 7% Na2SO4 electrolyte solution) in a moderate (4:4:1) aspect ratio enclosure heated from below and cooled from above and subjected to external nonuniformly distributed electromagnetic fields.
openaire   +4 more sources

Slide Valves for Single-Screw Expanders Working Under Varied Operating Conditions

Energies, 2016
This paper fully describes the working principle of slide valves in single-screw expanders (SSEs). A geometric analysis of suction and volume ratio slide valves is presented to determine the relations between volume ratio, suction closure volume ...
Yuting Wu, Ruiping Zhi, Biao Lei, Wei Wang, Jingfu Wang, Guoqiang Li, Huan Wang, Chongfang Ma   +7 more
doaj   +1 more source

Economic Analysis of Organic Rankine Cycle Using R123 and R245fa as Working Fluids and a Demonstration Project Report

Applied Sciences, 2019
The organic Rankine cycle (ORC) is a popular technology used in waste heat recovery and low-grade heat utilization, which are two important measures to solve the problems brought by the energy crisis.
Xinxin Zhang, Min Cao, Xiaoyu Yang, Hang Guo, Jingfu Wang   +4 more
doaj   +1 more source