[av_layerslider id=’23’ av_uid=’av-28fiia’] [av_section min_height=” min_height_px=’500px’ padding=’default’ shadow=’no-border-styling’ bottom_border=’no-border-styling’ bottom_border_diagonal_color=’#333333′ bottom_border_diagonal_direction=’scroll’ bottom_border_style=’scroll’ margin=” custom_margin=’0px’ scroll_down=” custom_arrow_bg=” id=” color=’main_color’ background=’bg_color’ custom_bg=” background_gradient_color1=” background_gradient_color2=” background_gradient_direction=’vertical’ src=” attach=’scroll’ position=’top left’ repeat=’no-repeat’ video=” video_ratio=’16:9′ video_mobile_disabled=” overlay_enable=” overlay_opacity=’0.5′ overlay_color=” overlay_pattern=” overlay_custom_pattern=” av-desktop-hide=” av-medium-hide=” av-small-hide=” av-mini-hide=” av_element_hidden_in_editor=’0′ av_uid=’av-6811wi’] [av_three_fifth first min_height=’av-equal-height-column’ vertical_alignment=’av-align-middle’ space=” margin=’0px’ margin_sync=’true’ row_boxshadow_color=” row_boxshadow_width=’10’ link=” linktarget=” link_hover=” padding=’0px’ padding_sync=’true’ highlight_size=’1.1′ border=” border_color=” radius=’0px’ radius_sync=’true’ column_boxshadow_color=” column_boxshadow_width=’10’ background=’bg_color’ background_color=” background_gradient_color1=” background_gradient_color2=” background_gradient_direction=’vertical’ src=” attachment=” attachment_size=” background_position=’top left’ background_repeat=’no-repeat’ animation=” mobile_breaking=” mobile_display=” av_uid=’av-sqrnhu’ custom_class=”] [av_textblock size=” font_color=” color=” av-medium-font-size=” av-small-font-size=” av-mini-font-size=” av_uid=’av-khvpa1we’ custom_class=” admin_preview_bg=”]

Chilled water system

In a chilled water system the components of the refrigeration cycle are relocated from the computer room’s air conditioning systems to a device called a water chiller. Chiller’s function is to produce chilled water (water refrigerated to about 8-15°C [46-59°F]). Chilled water is pumped in pipes from the chiller to the CRAH units located in the IT environment.
Computer room air handlers are similar to computer room air conditioners in appearance but work differently. Air handlers cool the air by removing warm air from the computer room through chilled water coils filled with circulating chilled water. Heat removed from the IT environment flows out with the (now warmer) chilled water exiting the CRAH and returning to the chiller. The chiller then removes the heat from the warmer chilled water and transfers it to another stream of circulating water called condenser water which flows through a device known as a cooling tower.
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Air-cooled system

<p “>This combination is generally known as an air-cooled CRAC DX system. The “DX” designation stands for direct expansion. Any system that uses refrigerant and an evaporator coil can be called a DX system.
Air-cooled CRAC units are widely used in IT environments of all sizes. In an air-cooled 2-piece system, half the components of the refrigeration cycle are in the CRAC and the other half are outdoors in the air-cooled condenser. Refrigerant circulates between the indoor and outdoor components in pipes called refrigerant lines. Heat from the IT environment is “pumped” to the outdoor environment using this circulating flow of refrigerant. In this type of system the compressor resides in the CRAC unit. However, the compressor may alternatively reside in the condenser and the correct term for the condenser is condensing unit, and the overall system is known as a split system.
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Free Cooling System

There are two main free cooling options for a data center or server room.

  •  Integral free cooling or economizer coil on computer room air handlers or DX air conditioners, or a centralized cooling tower and heat exchanger that works alongside the chiller. Integral economizer coils are ideal for sites with limited space and can offer high energy efficiency levels.
  • Independent free cooler using direct and/or in-direct evaporative cooling that has a higher efficiency of heat exchange rate. The independent free cooler is sized to maximize efficiency, enabling higher heat rejection capacity using larger coil face areas for the transfer of thermal energy. Independent free coolers have shown energy savings of up to 70 percent versus mechanical refrigeration. The cost savings associated with this method are due to the compressor’s inactivity, since the fans and pumps are still operational.
[/av_textblock] [/av_three_fifth][av_two_fifth min_height=” vertical_alignment=” space=” custom_margin=” margin=’0px’ row_boxshadow=” row_boxshadow_color=” row_boxshadow_width=’10’ link=” linktarget=” link_hover=” padding=’0px’ highlight=” highlight_size=” border=” border_color=” radius=’0px’ column_boxshadow=” column_boxshadow_color=” column_boxshadow_width=’10’ background=’bg_color’ background_color=” background_gradient_color1=” background_gradient_color2=” background_gradient_direction=’vertical’ src=” background_position=’top left’ background_repeat=’no-repeat’ animation=” mobile_breaking=” mobile_display=” av_uid=’av-2i83eq’] [av_image src=’https://arpco.co/wp-content/uploads/2015/11/free-cooling.png’ attachment=’7367′ attachment_size=’full’ align=’center’ styling=” hover=” link=” target=” caption=” font_size=” appearance=” overlay_opacity=’0.4′ overlay_color=’#000000′ overlay_text_color=’#ffffff’ copyright=” animation=’no-animation’ av_uid=’av-khvpj3xw’ custom_class=” admin_preview_bg=”][/av_image] [/av_two_fifth][/av_section][av_section min_height=” min_height_px=’500px’ padding=’default’ shadow=’no-border-styling’ bottom_border=’no-border-styling’ bottom_border_diagonal_color=’#333333′ bottom_border_diagonal_direction=” bottom_border_style=” custom_margin=’0px’ custom_margin_sync=’true’ custom_arrow_bg=” id=” color=’main_color’ background=’bg_color’ custom_bg=’#fafafa’ background_gradient_color1=” background_gradient_color2=” background_gradient_direction=’vertical’ src=” attachment=” attachment_size=” attach=’scroll’ position=’top left’ repeat=’no-repeat’ video=” video_ratio=’16:9′ overlay_opacity=’0.5′ overlay_color=” overlay_pattern=” overlay_custom_pattern=” av_element_hidden_in_editor=’0′ av_uid=’av-37f5qa’ custom_class=”] [av_one_full first min_height=’av-equal-height-column’ vertical_alignment=’av-align-middle’ space=” margin=’0px’ margin_sync=’true’ row_boxshadow_color=” row_boxshadow_width=’10’ link=” linktarget=” link_hover=” padding=’0px’ padding_sync=’true’ highlight_size=’1.1′ border=” border_color=” radius=’0px’ radius_sync=’true’ column_boxshadow_color=” column_boxshadow_width=’10’ background=’bg_color’ background_color=” background_gradient_color1=” background_gradient_color2=” background_gradient_direction=’vertical’ src=” attachment=” attachment_size=” background_position=’top left’ background_repeat=’no-repeat’ animation=” mobile_breaking=” mobile_display=” av_uid=’av-grkoc2′ custom_class=”] [av_heading heading=’Data Center Cooling Overview’ tag=’h2′ link_apply=” link=’manually,http://’ link_target=” style=’blockquote modern-quote modern-centered’ size=” subheading_active=” subheading_size=’15’ margin=” padding=’10’ color=” custom_font=” custom_class=” admin_preview_bg=” av-desktop-hide=” av-medium-hide=” av-small-hide=” av-mini-hide=” av-medium-font-size-title=” av-small-font-size-title=” av-mini-font-size-title=” av-medium-font-size=” av-small-font-size=” av-mini-font-size=” av_uid=’av-24qu9u’][/av_heading] [av_toggle_container initial=’0′ mode=’accordion’ sort=” av_uid=’av-emrbv6′] [av_toggle title=’Cooling Capacity Factor (CCF)’ tags=” av_uid=’av-c5t636′]

Average computer rooms today have cooling capacity that is four times of the IT heat load. Using Data collected from 45 sites reviewed by Upsite Technologies, shows how you can calculate, benchmark, interpret, and benefit from a simple and practical metric called the Cooling Capacity Factor.

Advantages of learning CCF and fixing AFM problems include:

•  Improve PUE & reduce energy costs

•  Increase IT load without adding more cooling units

•  Delay capital expenditures

What is the Cooling Capacity Factor (CCF)?
CCF is a metric Upsite used to determine the cooling effectiveness of a data center. It measures the cooling output related to the IT load, providing an accurate demo of cooling infrastructure efficiency.

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Without boundaries, the air paths mix, will result in both economic and ecological consequences. The design is widely regarded as the first step in improving airflow management, which aligns data center cabinets into alternating rows, endures in critical facilities throughout the world.
The importance of design arrangement:
•  Bypass air or conditioned air that does not reach computer equipment, escaping through cable cut-outs, holes under cabinets, misplaced perforated tiles or holes in the computer room perimeter walls, limits the precise delivery of cold air at the server intake.
•  Hot air recirculation, where waste heat enters the cold aisle, ensures that the cooling infrastructure must throw colder air at the equipment to offset this mixing.
•  Hot air contamination prohibits the air handlers from receiving the warmest possible exhaust air, rendering their operation less efficient.
•  Hot spots may persist as a result of all of the above.

[/av_toggle] [av_toggle title=’Air-Sealing ‘ tags=” av_uid=’av-9p4nj6′][/av_toggle] [av_toggle title=’In Room Data Center Cooling’ tags=” av_uid=’av-7zxajm’][/av_toggle] [av_toggle title=’In Row Data Center Cooling’ tags=” av_uid=’av-55xyc2′][/av_toggle] [av_toggle title=’In Rack Data Center Cooling’ tags=” av_uid=’av-3p9qg2′][/av_toggle] [av_toggle title=’Data Center Temperature and Humidity Guidelines’ tags=” av_uid=’av-1wyx42′]
  • Low-end temperature 64.4°F (18°C)
  • High-end temperature 80.6°F (27°C)
  • Low-end moisture 40% relative humidity and 41.9°F (5.5°C) dew point
  • High-end moisture 60% relative humidity and 59°F (15°C) dew point
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