Based on the model-free adaptive control (MFAC) theory, temperature tracking problem of single-effect LiBr/H2O absorption chiller is explored. Due to complex nonlinearity and strong coupling characteristics refrigeration system, strategy designed for its control. Nevertheless, traditional has a slow speed poor denoising ability. In order improve effect, output error rate added objective functio...

Energy hub systems integrate various energy sources and interconnect different carriers in order to enhance the flexibility of system. In this paper, a cooperative framework is proposed which network hubs collaborate together share their resources reduce costs. Each has several including CHP, boiler, renewable sources, electrical chiller, absorption chiller. Moreover, storages are considered fo...

Due to finding solutions reduce energy consumption and improve the electricity production efficiency in power cycles, using waste heat of cycles combined generation systems can be a useful approach. Also, by wasted cooling heating demands met. Therefore, this study presents energy, exergy, economic, environmental evaluations new configuration cooling, heating, (CCHP) or tri-generation system wi...

Aiming at the issues of unreasonable cooperation schemes and inappropriate setting parameters refrigeration system with multi-chiller plants, this paper presents a cooperative optimization method to improve energy performance composed water-cooled chillers air-cooled heat pumps. The process includes scheme parameter optimization. To content dynamic cooling load, working sequence pumps variable ...

Chiller plants are the most energy consuming system during summer season in residential, commercial and hospital buildings. The highly variable cooling demand of buildings connected to a hybrid chiller plant included absorption vapor compression chillers achieve higher efficiencies is one important issues. Cooling load sharing strategies apply water flow have significant impact on consumption c...

In this study, enhancements of thermal conductivities of ethylene glycol, water, and synthetic engine oil in the presence of copper (Cu), copper oxide (CuO), and multi-walled carbon nanotube (MWNT) are investigated using both physical mixing method (two-step method) and chemical reduction method (one-step method). The chemical reduction method is, however, used only for nanofluid containing Cu ...