ASHRAE Journal - November 2019 - 30

TECHNICAL FEATURE

Cornell University studied the environmental impact
before, during, and after the lake source cooling project
as well as the influence of two other nearby waste water
treatment plants. The reports are issued annually, since
the project inception, and show that the weather and
tributaries had the most impact on the temperature,
phosphorus, fluorescence and other measured items.

Also, the studies clearly exhibited that the waste water
treatment plants had larger attributed impacts to the
lake than the lake source cooling project.
Although when the project was designed and
constructed the goal wasn't to match the absolute
highest need for computing availability, the university
did want to provide a highly reliable system for the
university. In 1999, computer
systems required weeks to perform
complex calculations; the Cornell
cooling system provided redundant
chilled water pumps to ensure that
cooling water would be circulated
continuously to prevent the
computer systems from shutting
down due to lack of chilled water.
Redundant components are still a
mainstay for today's systems and
the large chilled water piping can
provide thermal energy storage for a
considerable amount of time.

Ocean Cooled Data Center

®

30

ASHRAE JOURNAL

ashrae.org

N O V E M B E R 2 0 19

A former paper plant in Hamina,
Finland, originally built in 1954 was
purchased by Google in 2009 and
converted into a data center.8 The
original building used a seawater
tunnel 1,476 ft (450 m) long for
cooling and this was reused for the
data center. The location is on the
Gulf of Finland where the water
temperatures are consistently cold
at 33.8°F (1.0°C) to 37.4°F (3.0°C);
the tunnel is far enough below
the surface to avoid any issues of
freezing. The first phase of the
project was completed in September
2011 and since it has been touted as
one of their most energy-efficient
data centers.
In addition to the data center
being able to use a low temperature,
the discharge back to the Gulf
of Finland is tempered with the
seawater to discharge into the gulf


http://www.berner.com

ASHRAE Journal - November 2019

Table of Contents for the Digital Edition of ASHRAE Journal - November 2019

Contents
ASHRAE Journal - November 2019 - Intro
ASHRAE Journal - November 2019 - Cover1
ASHRAE Journal - November 2019 - Cover2
ASHRAE Journal - November 2019 - 1
ASHRAE Journal - November 2019 - Contents
ASHRAE Journal - November 2019 - 3
ASHRAE Journal - November 2019 - 4
ASHRAE Journal - November 2019 - 5
ASHRAE Journal - November 2019 - 6
ASHRAE Journal - November 2019 - 7
ASHRAE Journal - November 2019 - 8
ASHRAE Journal - November 2019 - 9
ASHRAE Journal - November 2019 - 10
ASHRAE Journal - November 2019 - 11
ASHRAE Journal - November 2019 - 12
ASHRAE Journal - November 2019 - 13
ASHRAE Journal - November 2019 - 14
ASHRAE Journal - November 2019 - 15
ASHRAE Journal - November 2019 - 16
ASHRAE Journal - November 2019 - 17
ASHRAE Journal - November 2019 - 18
ASHRAE Journal - November 2019 - 19
ASHRAE Journal - November 2019 - 20
ASHRAE Journal - November 2019 - 21
ASHRAE Journal - November 2019 - 22
ASHRAE Journal - November 2019 - 23
ASHRAE Journal - November 2019 - 24
ASHRAE Journal - November 2019 - 25
ASHRAE Journal - November 2019 - 26
ASHRAE Journal - November 2019 - 27
ASHRAE Journal - November 2019 - 28
ASHRAE Journal - November 2019 - 29
ASHRAE Journal - November 2019 - 30
ASHRAE Journal - November 2019 - 31
ASHRAE Journal - November 2019 - 32
ASHRAE Journal - November 2019 - 33
ASHRAE Journal - November 2019 - 34
ASHRAE Journal - November 2019 - 35
ASHRAE Journal - November 2019 - 36
ASHRAE Journal - November 2019 - 37
ASHRAE Journal - November 2019 - 38
ASHRAE Journal - November 2019 - 39
ASHRAE Journal - November 2019 - 40
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ASHRAE Journal - November 2019 - 45
ASHRAE Journal - November 2019 - 46
ASHRAE Journal - November 2019 - 47
ASHRAE Journal - November 2019 - 48
ASHRAE Journal - November 2019 - 49
ASHRAE Journal - November 2019 - 50
ASHRAE Journal - November 2019 - 51
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ASHRAE Journal - November 2019 - 53
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ASHRAE Journal - November 2019 - 60
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ASHRAE Journal - November 2019 - Cover3
ASHRAE Journal - November 2019 - Cover4
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