Optimization of data center performance for reduction in power and cooling costs is crucial to the growth of IT services both in enterprise and consumer sector. Significant work has been conducted in the past to understand the thermodynamic variables and parameters that influence the environmental conditions of the rooms vis-a-vis the computer room air conditioning (CRAC) units, racks and serve...

Energy consumption in the buildings is responsible for 26% of Australia’s greenhouse gas emissions where cooling typically accounts for over 50% of the total building energy use. The aim of this study was to investigate the potential for reducing the cooling systems’ environmental footprint with applications of alternative renewable energy source. Three types of cooling systems, water cooled, a...

Several projects involving high-level thermal management — such as eliminating “hot spots” or reducing cooling costs through intelligent workload placement — require ambient air temperature readings at a fine granularity. Unfortunately, current thermal instrumentation methods involve installing a set of expensive hardware sensors. Modern motherboards include multiple on-board sensors, but the v...

Radiant systems have been proven to be an energy-efficient and resource-effective heating cooling solution for buildings. A key feature of a thermally active building system (TABS), one type radiant system, is its ability activate control the thermal mass structure. The advantage this peak load shifting effect by mass, which leads energy saving compared conventional e.g., all-air system. This c...

A new numerical model has been developed for the simulation of pate-fin-tube type of cooling and dehumidifying coils widely used in the air conditioning industry. The model discretizes the coil into nodes along the coolant path and carries out repetitive marches from the coolant inlet to its outlet while simultaneously updating the values of the air stream properties for obtaining quick converg...

The cooling efficiency of natural draft dry cooling system (NDDCS) are vulnerable to ambient winds, so the implementation of measures against the wind effects is of great importance. This work presents the combined air leading strategies to recover the flow and heat transfer performances of NDDCS. Following the energy balance among the exhaust steam, circulating water, and cooling air, numerica...

In hot summers, air conditioning (AC) and mechanical ventilation (such as fans) are used cooling modes that strongly influence the resultant indoor environment, like thermal comfort quality in shops of a Nanning arcade street (qilou). The circulation mode greatly affects environment level freshness. approaches for effectively improving developed qilou with air-conditioner humid region southern ...

• Experimental demonstration of two stage desalination and cooling • Use of chilled water for condensation of humid air • Simulation of experimental results • Comparative study on conventional condensation and improved condensation • Improved design of proposed integrated plant a b s t r a c t a r t i c l e i n f o Humidification–dehumidification (HDH) desalination is a simple and cost effectiv...

This paper presents the experimental as well as the simulated performance studies on the transcritical CO2 heat pumps for simultaneous water cooling and heating; effects of water mass flow rates and water inlet temperatures of both evaporator and gas cooler on the cooling and heating capacities, system COP and water outlets temperatures are investigated. Study shows that both the water mass flo...

Abstract The performance and life cycle of Li-ion batteries are governed by the maximum temperature uniformity distribution in battery pack, an efficient thermal management system is highly desired to keep operating pack within safe limits. Air cooling has received extensive attention area management. However, intensification air-cooling modules essential while keeping simplicity design satisfy...