A review of data center cooling technology, operating conditions and the corresponding low-grade waste heat recovery opportunities (pdf download available)

The depletion of the world0s limited reservoirs of fossil fuels, the worldwide impact of global warming and the high cost of energy are among the primary issues driving a renewed interest in the capture and reuse of waste energy. Data recovery ubuntu A major source of waste energy is being created by data centers through the increasing demand for cloud based connectivity and performance. Database diagram tool In fact, recent

gures show that data centers are responsible for more than 2% of the US total electricity usage. Database field types Almost half of this power is used for cooling the electronics, creating a signi

culty associated with recovering and reusing this stream of waste heat is that the heat is of low quality.

Data recovery best buy In this paper, the most promising methods and technologies for recovering data center low-grade waste heat in an effective and economically reasonable way are identi

ed and discussed. Raid 5 data recovery A number of currently available and developmental low-grade waste heat recovery techniques including district/plant/water heating, absorption cooling, direct power generation (piezoelectric and thermoelectric), indirect power generation (steam and organic Rankine cycle), biomass co-location, and desalination/clean water are reviewed along with their operational requirements in order to assess the suitability and effective- ness of each technology for data center applications. Database administrator salary nyc Based on a comparison between data centers0 operational thermodynamic conditions and the operational requirements of the discussed waste heat recovery techniques, absorption cooling and organic Rankine cycle are found to be among the most promising technologies for data center waste heat reuse.

[Show abstract] [Hide abstract] ABSTRACT: One of the main concerns in designing and operating data centers is the significant energy consumption of the cooling systems. Database p Over the past years, developing and applying more energy efficient cooling strategies to reduce the environmental footprint and the total cost of ownership of data centers has drawn considerable attention. Cloud 9 database Cooling systems with air-side economizer cycle provide one of the most efficient methods. Data recovery on ssd Their effectiveness in terms of energy and exergy, and the environmental and economical impact have been analyzed quantitatively in this research. Database query tools Since the effectiveness highly depends on the local climate conditions, the analysis has been carried out for 23 locations across Australia. Database 2000 First, a detailed cooling load of the data center has been estimated by considering the workload and heat generation characteristics of the running IT equipment. Database business rules Then, a comprehensive energy, exergy, environment and economic model of nine different air-side economizer cycles has been developed. Iphone 5 data recovery Finally, the effectiveness and profitability of each economizer cycle has been compared to a conventional cooling system by evaluating the annual and monthly saving potential at each location. Database implementation The air-side economizers can yield maximum savings of 84%, 80%, 75% and 85% in the annual cooling energy consumption, exergy destruction, emission and cooling costs, respectively. Raid 1 data recovery software The power usage effectiveness (PUE) of the data centers can be also reduced from an average of 1.42 to 1.22. Seagate data recovery These savings and efficiency enhancements are highly correlated with the type and geographic location of the air-side economizers. Database report In general, the saving potential increases as we move further south in Australia, due to more favorable climate conditions.

[Show abstract] [Hide abstract] ABSTRACT: Alternative renewable energy sources are immensely important in view of the increase in worldwide energy needs and environmental effects. Data recovery specialist The thermoelectric (TE) technology is being seen as the perfect solution for both issues due to its ability to convert heat directly into electricity without CO2 emission. Data recovery iphone 6 However, the application of TE materials for commercial devices is still limited due to their low conversion efficiency of ~10–15%. Database building Currently the improvement of TE efficiency is challenging due to the relationship among physical properties, i.e., electrical conductivity, thermal conductivity and Seebeck coefficient which often counter each other and are restricted by the carrier concentrations. Data recovery top 10 Fortunately, nanostructures have been shown to be able to disconnect the link among these physical properties to enhance the conversion efficiency of materials. Database hosting Thus, the purpose of this review paper is to present the different nanostructured approaches for enhancing the TE properties of materials. Data recovery best The various techniques have been widely used to synthesize the bulk nanostructure and low dimensional systems were also described. Data recovery program A discussion on potential heat resources for the TE conversion, as well as the recent progress in TE is provided in terms of material, process and technology. 7 data recovery 94fbr Nanostructured skutterudites, half – Heusler, oxides and Si-Ge binary system were focused in this review paper due to the fact that the TE materials are among the best candidates for high-temperature applications. Database languages We also included our estimation in output electrical power of thermoelectric generation (TEG) for these type TE materials. Database ranking Besides that, some innovations for the development of TE materials were mentioned. Data recovery youtube In addition, we also discussed the estimation of the TE cost to shed some light on commercializing considerations. 911 database We concluded that the high cost of the heat exchanger and ceramic substrate system components proved to be barriers in reducing the cost of TEG.