Results 71 to 80 of about 2,713,229 (200)

Design and Analysis of CO2 Refrigeration System for Indoor Ice Rink with Heat Recovery

Zhileng xuebao, 2022
The main energy requirements of indoor ice rinks are refrigeration and heat. If the refrigeration system can simultaneously meet the refrigeration and heating loads, the system efficiency can be significantly improved.
Yao Yao, Li Minxia, Dang Chaobin, Dong Liwei, Ma Yitai, Tian Hua, Wang Pai   +6 more
doaj  

Implications of Coupling in Quantum Thermodynamic Machines

, 2017
We study coupled quantum systems as the working media of thermodynamic machines. Under a suitable phase-space transformation, the coupled systems can be expressed as a composition of independent subsystems.
Banik, Manik, Ghosh, Sibasish, Thomas, George   +2 more
core   +2 more sources

Experimental Research on Direct Cooling Thermal Management System for Multi-Box Battery Packs

Zhileng xuebao
As the power density of lithium-ion batteries continues to increase and high-power fast-charging technologies emerge, the development of battery thermal management systems has become an important and challenging area of research.
Li Xinsheng, Jia Teng, Zhao Yao, Jiang Shan, Dai Yanjun   +4 more
doaj  

Nonlinear Aspects of Heat Pump Utilization

Acta Polytechnica, 2010
This work attempts to answer the question: How much can we believe that the coefficient of performance provided by the manufacturer is correct, when a heat pump is required to face the real load coming from changes of temperature?
R. Najman
doaj  

Novel Glue-Stabilized Sorbent Layers for Adsorption Chillers: Thermal and Sorption Characteristics

Energies
Adsorption chillers can produce chilled and desalinated water using low-grade heat, but their performance is limited by low coefficient of performance (COP) and large system mass.
Tomasz Bujok, Karol Sztekler, Wojciech Kalawa, Ewelina Radomska, Agata Mlonka-Mędrala, Łukasz Mika, Piotr Boruta   +6 more
doaj   +1 more source

Optimization Of Thermo-Electric Coolers Using Hybrid Genetic Algorithm And Simulated Annealing

Archives of Control Sciences, 2014
Thermo-electric Coolers (TECs) nowadays are applied in a wide range of thermal energy systems. This is due to their superior features where no refrigerant and dynamic parts are needed.
Khanh Doan V.K., Vasant Pandian, Elamvazuthi Irraivan, Dieu Vo N.   +3 more
doaj   +1 more source

ANALISIS KINERJA INTELLECTUAL CAPITAL PERUSAHAAN PUBLIK DI \ud INDONESIA [PDF]

, 2009
Intention of this research is to analyze performance of Intellectual Capital at company of measured public with method of Value Added Intellectual Coefficient (VAICTM). Later make ranking pursuant to Business Performance Indicator ( BPI).
Silo, Devi Mutiara Sari De
core  

A posteriori error estimation and adaptivity in stochastic Galerkin FEM for parametric elliptic PDEs: beyond the affine case [PDF]

, 2006
We consider a linear elliptic partial differential equation (PDE) with a generic uniformly bounded parametric coefficient. The solution to this PDE problem is approximated in the framework of stochastic Galerkin finite element methods.
Bespalov, Alex, Xu, Feng
core   +3 more sources

Experimental investigation of Ice plant using different concentrations of Nano lubricant with primary refrigerant R-134a

Journal of Applied Science and Engineering
In this study the performance analysis of ice plant is carried out experimentally for different concentration (0.2%, 0.3% and 0.4%) of TiO2 with (POE) lubricant using R-134a as a primary refrigerant in to the system.
V. C. Shewale, A. A. Kapse, S. P. Mogal
doaj   +1 more source

Estimating Standard Errors For The Parks Model: Can Jackknifing Help? [PDF]

Non-spherical errors, namely heteroscedasticity, serial correlation and cross-sectional correlation are commonly present within panel data sets. These can cause significant problems for econometric analyses.
Rachel S. Webb, W. Robert Reed
core