Nuclear energy can be used as the primary energy source in centralized hydrogen production through high-temperature thermochemical processes, water electrolysis, or high-temperature steam electrolysis. Energy efficiency is important in providing hydrogen economically and in a climate friendly manner. High operating temperatures are needed for more efficient thermochemical and electrochemical hy...

The pre-chilling of rabbit carcasses in an immersion tank directly interferes with microbial control. Therefore, this study was developed to examine the influence different pre-chill water temperatures (4, 7, and 10 °C) on microbiological quality carcasses. Samples ice from pre-chiller were collected; mesophilic aerobic heterotrophic microorganisms (MES), enterobacteria (EC), coagulase-positive...

Vapor compression systems continuously leak a small fraction of their refrigerant charge to the environment, whether during operation or servicing. As a result of the slow leak rate occurring during operation, the refrigerant charge decreases until the system is serviced and recharged. This charge degradation, after a certain limit, begins to have a detrimental effect on system capacity, energy...

Communication games are crucial tools for investigating the limitations of physical theories. The communication complexity (CC) problem is a typical example, which several distributed parties attempt to jointly calculate given function with limited classical communications. In this work, we present method construct CC problems from Bell tests in graph-theoretic way. Starting an experimental com...

The topic of this doctoral thesis is energy efficient electronic cooling using hot water as coolant. The aim of the work is to provide a viable solution to reduce the energy spent for cooling supercomputers and allow energy reuse for secondary applications. A transition from air cooling to single phase liquid (water) cooling is proposed to master the challenge of ever increasing heat dissipatio...

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...