Veri Merkezlerinde Serbest Soğutma ve Trijenerasyon Uygulamaları Anlatıldı (Seminar report: free cooling and trigeneration in data centres)

Overview

This document is the report of an online seminar held by the Turkish Society of HVAC and Sanitary Engineers (TTMD) on 26 January 2021, published in TTMD Dergisi No. 129 (January-March 2021, p. 16). The seminar covers free cooling and trigeneration for data centres in Turkey. The speakers are C. Mutlu Tunç, M. Zeki Yılmazoğlu and Sinan Soğancı. The report is short, but it is one of the few Turkish sources on the effect of climate change on data-centre free cooling by city.

The first talk presents work done with Boğaziçi University's climate-change centre: the data-centre free-cooling potential of Istanbul, Ankara, İzmir, Konya and Erzurum was quantified and compared across 30-year climate periods. Inland cities away from the sea have relatively higher free-cooling potential; Konya has the highest and it is increasing. Istanbul has the lowest potential of the cities studied and it is decreasing. The stated goal is to extend the analysis to all 81 provinces so data centres can forecast future energy use and choose site and cooling system.

The second talk covers the benefits of cogeneration and trigeneration, part-load behaviour, heat-to-power ratios and ambient-temperature derating. The report stresses that CHP and trigeneration plants are usually sized for base load with fixed outputs, while data-centre and building loads vary daily and hourly, so matching electrical and thermal output is key. As a limit, this is a seminar report; it contains no detailed data, method or numerical result tables.

Key points

1. Free-cooling potential was quantified for Istanbul, Ankara, İzmir, Konya and Erzurum and compared across 30-year climate periods.
2. Inland cities away from the sea have relatively higher free-cooling potential; Konya has the highest and it is increasing.
3. Istanbul has the lowest free-cooling potential of the cities studied and it is decreasing.
4. Stated goal: extend the analysis to all 81 provinces so data centres can forecast future energy use and choose site and cooling system.
5. CHP/trigeneration plants are usually sized for base load with fixed outputs, while data-centre and building loads vary, so matching electrical and thermal output is key.
6. The seminar was held online on 26 January 2021; the report is in TTMD Dergisi No. 129.

Using it in design

• In the site-selection tool, surface free-cooling hours by province for Turkish sites.
• Flag coastal Istanbul sites as lower-potential.
• Consider future-climate weather files rather than historical TMY only.
• When evaluating trigeneration, account for part-load behaviour and ambient-temperature derating.

Who should read it

Designers choosing data-centre sites and cooling systems in Turkey, HVAC engineers and energy planners.

Publication details

Authors

C. Mutlu Tunç; M. Zeki Yılmazoğlu; Sinan Soğancı

Publisher

Türk Tesisat Mühendisleri Derneği (TTMD) - TTMD Dergisi

Year

2021

Document number

TTMD Dergisi Sayı 129 (Ocak-Mart 2021), s. 16

Event

TTMD seminar (reported in TTMD Dergisi No. 129)

Document language

English

Source type

Industry body

Access

Free to read

Licence

Copyright retained; citation only — the publisher’s terms apply to the original document

Citation