Analysis of a water tank energy storage system for use in a warm water cooled data center

2016 ◽  
Author(s):  
Isaac Rose ◽  
Amy S. Fleischer
Keyword(s):  
Energy Storage ◽  
Data Center ◽  
Storage System ◽  
Energy Storage System ◽  
Warm Water ◽  
Water Tank

Data Center Energy Conservation by Heat Pipe Cold Energy Storage System

2010 ◽  
Author(s):  
Xiao Ping Wu ◽  
Masataka Mochizuki ◽  
Koichi Mashiko ◽  
Thang Nguyen ◽  
Tien Nguyen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Heat Pipe ◽  
Data Center ◽  
Heat Load ◽  
Data Centers ◽  
Storage Systems ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Storage Systems ◽  
Cold Energy

In this paper, design and economic analysis for applying a novel type of heat pipe into cold energy storage systems have been proposed and discussed. The heat pipe cold energy storage systems can be designed into several types that are ice storage, cold water storage and pre-cool heat exchanger. Those systems can be used for co-operating with conventional chiller system for cooling data centers. The heat load used for discussing in this paper is 8800 kW which represents a large scale data center. The methodology addressed in this paper can be also converted into the middle and small sizes of the data centers. This type of storage system will help to downsize the chiller and decrease its running time that would be able to save significant electricity cost and decrease green house gas emissions from the electricity generation. The proposed systems can be easily connected into the existing conventional systems without major design changes. The analysis in this paper is using Air Freezing Index AFI >= 400 °C-days/year for sizing the heat pipe modules. For the locations where AFI has different value the storage size will be varied accordingly. The paper also addressed a result that an optimum size of cold energy storage system that should be designed at a level to handle 60% of total yearly heat load of a data center.

Contribution of Heat Pipe to the Energy Conservation of Data Center and Cloud Computers

2011 ◽  
Author(s):  
Masataka Mochizuki ◽  
Thang Nguyen ◽  
Koichi Mashiko ◽  
Yuji Saito ◽  
Xiao Ping Wu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Heat Pipe ◽  
Data Center ◽  
Cold Water ◽  
Storage System ◽  
Water Storage ◽  
Energy Storage System ◽  
Yearly Average ◽  
Data Center Cooling ◽  
Cold Energy

With the current increase of the electrical power consumption of the data center imposed a great concern in the world about sustainable energy and global warming and it is therefore required innovative ideas to conserve the energy consumption. Authors propose the use of heat pipe which is a best known passive heat transfer device that is well suitable apply for energy saving system in the current data center cooling system. In this paper, a design and economics of the novel type of thermal control system for data center cooling using heat pipe based cold energy storage system has been proposed and discussed. The cold water storage system is explained and sized for data center with heat output capacity of 8,800 kW. Basically, the cold energy storage will help to downsize the chiller and decrease its runtime that will save electricity related cost and decrease green house gases emissions resulting from the electricity generation. The proposed cold energy storage system can be retrofit or connected in the existing data center facilities without major design changes. Water based cold energy storage system provides more compact size with short term storage (hours to days) and is potential for both small to large size data center with yearly average temperature below the cold storage water temperature (∼ 25 °C). The cold water storage system is sized on the basis of metrological conditions in North America, USA. As an outcome of the thermal and cost analysis, an optimum size of cold energy storage system should be designed to handle 60% of the yearly data center load. The proposed system can be easily integrated into the existing conventional systems without any significant infrastructure changes. Preliminary results obtained from the experimental system design to test the ice formation potential of the heat pipe based cold energy storage system has been shown good result and validated the proposed concept.

scholarly journals Dynamic Modelling of a Solar Water Pumping System with Energy Storage

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Shatadru Biswas ◽  
M. Tariq Iqbal
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Electric Energy ◽  
Dynamic Modelling ◽  
Energy Storage System ◽  
Water Tank ◽  
Alternative Source ◽  
Photovoltaic Array ◽  
Battery Bank ◽  
Large Water

This paper describes the dynamic modelling of a system used for extraction of groundwater for irrigation using an alternative source of energy. The system is designed based on data of an existing project in Lalmonirhat, Bangladesh. The system comprises a 38.4 kWp solar photovoltaic array, inverter, AC motor, and pump set, which can discharge a maximum of 1,930 m3 of water per day. MATLAB simulation is performed with two types of energy storage system: (i) electric energy using a battery bank and (ii) stored water in a large water tank. A large battery bank and a transformer are needed in the former one, which turns out as a costly solution. The latter one requires a boost converter and a large water tank to store around 2,000 m3 of water, which is also a costly solution. A combination of both systems yields an efficient and economical solution. The effectiveness of these three systems is compared with conventional diesel engine system.

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