Cold/Hot Pool Solutions for DC(Cold/Hot Aisle Containment)

Heat radiation increases

How to solve the problem of equipments' heat radiation for the coming era of large blade server and cloud computing?

200021, 2U Servers2kw heat amount

200242, 1U Servers6kw heat amount

20066 Blade Centers24kw heat amount

2016 ?

Challenges faced by traditional IT room--hot hot hot

1,Short-distance recycling causes insufficient cooling2,Long-distance blowing causes insufficient incoming air for racks3,Long-distance of air returning causes mixing of cold and hot air currents, to reduce efficiency of CRAC

Challenged faced by traditional IT rooms: hot hot hotIn traditional IT rooms: cold current isn't well isolated from hot atmosphere, therefore enough cold current is needed, after mixing with hot atmosphere, to cool down IT equipments, whereas colder current means higher power consumptionASHRAE(American Society of Heating, Refrigerating and Air-Conditioning Engineers) tells: one more higher degree of flowing current can save 4% of refregeration consumption

Tradtional model of upside flow Traditional model of beneath flow

Solutions of cold pool (cold aisle containment)

Cold pool adopted to isolate CRAC's blowing air, to avoid mixture of blowing air and enviroment air / emission air of servers, to supply more effective cooling air to support more density of equipment installation. Meanwhile much reduce quantity of CRAC and power consumption, hence to achieve cost reduction and energy saving / emssion reduction

Solution of enclosed-type hot passage(hot aisle containment)

Similar manner, hot pool adopted to isolate returning air of CRAC, to avoid the mixture of the returning air and blowing air for servers

Traditional way of air blowing VS cold poolTotal IT load=1200KW100 racks: 12KW/rackTotal air current=138,000 CFM

Could raise tempreture of the blowing air by 13 , ℃much reduce power consumption

Stimulated diagram of refrigeration effect comparison in IT room

Avarage tempreture of IT rooms can be made around 23.6 , after setup of ℃cold pool system

Intelligent airflow control--for more efficiency in rack cooling

• Direct rack air conditioning goes in a new direction---Horizontal

• To deal with: fluctuating server rack loads, space restrictions, lack of a raised floor,existing server technology, etc.

• Ⅰ , , , Ⅱ Ⅲ Ⅳ

Ⅰ ,Horizontal Air Conduction:

Ⅱ,Cold air reaches the rack via the shortest route

Ⅲ

Ⅳ

Shanghai Z&G Intelligent Technology Co., Ltd

• Henry Soong : 86 152 2157 6493

• www.zgitech.com

• henry.soong@zgitech.com

• Tel: 86-21-5438 8778; Fax: 86-21-5428 2153