Solar desiccant cooling is widely considered as an attractive replacement for conventional vapor compression air conditioning systems because of its environmental friendliness and energy efficiency advantages. The system performance of solar desiccant cooling strongly depends on the input parameters associated with the system components, such as the solar collector, storage tank and backup heat...

Although water-cooled chillers are more energy efficient than air-cooled chillers, a majority of chilled water systems use air-cooled chillers. In cold weather climates, air-cooled chillers are capable of functioning in low ambient temperatures with few operational concerns, where as water-cooled chiller systems must be equipped to prevent cooling tower freezing. The integrated chiller system a...

1D3D and 2D2D cyclones were tested at Amarillo, Texas, to evaluate the effect of air density on cyclone performance. Both airflow rate and cyclone inlet velocity change with the change in air density. Two sets of inlet design velocities determined by the different air densities were used for the tests: one set based on the actual airflow, and the other set based on standard airflow. Experimenta...

Increasing the turbine inlet temperature can increase the gas turbine cycle efficiency. In order to increase the turbine inlet temperature significantly, an advanced cooling system has to be essentially developed. Injection of mist to the coolant fluid is considered a promising technique to protect the hot components such as combustor liners, combustor transition pieces, and turbine vanes and b...

Abstract The objective of this study was to search the effects inlet air compressor pressure and evaporative cooling four different cogeneration plants that are absorption (ab), basic (bsc), heating (airh), fuel (airfh) systems by using first law second thermodynamics, exergy analysis methods. For analysis, a program is written author in FORTRAN programming language. Decreasing atmospheric or i...

In this paper,&#10 the application of evaporative cooling for refrigeration cycle to reduce power consumption in hot climates is emphasized. Experimental and analytical investigations were performed in order to specify the effect of evaporative cooling condenser instead of the commonly used air cooling condenser in window-air-conditioners. Evaporative condenser can reject more heat, thereby pre...

This paper presents experimental results of an inherently safe liquid cooling system. A test rig is operated at Hamburg University of Technology in order to prove the concept and gather first data for electronics cooling in modern civil aircraft. The cooling system uses a dielectric working fluid for the natural circulation in a looped thermosyphon operating in both oneand two-phase mode. First...

The stagnation of Dennard scaling along with the move towards heterogeneous 2.5D and 3D ICs is increasing thermal design power (TDP) envelopes general-purpose CPUs. With conventional cooling approaches such as air-cooling cold plates, it challenging to meet these increased requirements. Moreover, requirements necessitate larger management overheads in datacenter settings. All trends point need ...

An experimental investigation of the local film cooling effectiveness and heat transfer coefficient downstream of a row of elongated holes in a simulated axial turbine blade tip is presented. Film cooling is needed to protect the turbine blade tip region from high heat transfer rates, especially when cooling by convection is insufficient to keep the temperature distribution of the blade within ...

The thermal management of a proton exchange membrane fuel cell (PEMFC) is crucial for vehicles. This paper presents new simulation model the water-cooled PEMFC stacks automotive vehicles and cooling systems. system considers both stack compressed air through intercooler. Theoretical analysis was carried out to calculate heat dissipation requirements system. case study results show that more tha...