Compared to a photovoltaic array, photovoltaic/thermal concentrator module can produce thermal power for various productions in downstream cycles addition electrical energy. In this study, the system combined production of electricity, heat and cooling based on has been evaluated. triple system, lithium bromide-water absorption chiller with capacity 5 kW was used. organic Rankine generation cyc...

This paper proposes the first application of a split-range control technique on concentrating solar collector to improve an absorption plant production. Solar plants have power availability in phase with cooling demand under design conditions. Thus, it is powerful technology context renewable energy and efficiency. These need systems cope irradiance intermittency, reject irradiation disturbance...

During extremely hot summer days, air conditioning systems are known as major electricity consumers in residential, commercial and industrial sectors. Moreover, high energy requirement of multiple-chiller plants may cause an interconnected power grid be faced with annual on-peak electrical demand, load-generation mismatch, voltage collapse and catastrophic wide area blackout. Therefore, this pa...

Shrinkage defect in an alloy steel casting for marine engine cylinder cover was estimated by numerical analysis with reference to casting variables such as riser and chiller. Retained melt modulus was employed as a prediction parameter in this study. Shrinkage defects were developed at the final solidification region. This is associated with hot spots, which could be controlled more effectively...

We present a data mining approach to model the cooling infrastructure in data centers, particularly the chiller ensemble. These infrastructures are poorly understood due to the lack of “first principles” models of chiller systems. At the same time, they abound in data due to instrumentation by modern sensor networks. We present a multi-level framework to transduce sensor streams into an actiona...

Absorption chillers require precise models for their control and optimization. The present work analyzes the behavior of a 10-kW absorption chiller by means four different methods that use external fluid temperatures to situate machine operating conditions, either through characteristic temperature difference or COPcarnot. studied are physical insight levels: semi-empirical method (the equation...

The majority of integrated energy systems (IES) for combined electricity, heat and refrigeration generation, or trigeneration, are based on gas engines. fuel efficiency engines strictly influenced by intake air temperatures. Practically in all IES the absorption lithium-bromide chillers (ACh) applied conversing removed from engine into form chilled water. peculiarity trigeneration food industri...