Using data centres for combined heating and cooling: An investigation for London

Davies, G.; Maidment, Graeme; Tozer, Robert

doi:10.1016/j.applthermaleng.2015.09.111

Cited by 108 publications

(67 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ellsworth and Iyengar have found that water-cooled systems can in fact increase processor performance by 33% compared to the air-cooled systems [35]. Waste heat could also be captured in the chilled supply water where the temperature is only 10-20°C [15].…”

Section: Solutions For Waste Heat Recovery and Utilizationmentioning

confidence: 99%

“…The best locations for capturing waste heat have been discussed in [10] and [15]. In air-cooled servers the best locations are at the return air flow to the CRAC/CRAH.…”

Section: Solutions For Waste Heat Recovery and Utilizationmentioning

confidence: 99%

“…In order to make the most out of the low quality heat, can be used to transform low-grade heat to higher temperatures. HPs in DCs typically have COP values around 2-7, depending on the number of cycles and at which temperature waste heat is upgraded [15]. In principle, an alternative heat source for HP could be solar heat stored in the bedrock, from boreholes.…”

Section: Solutions For Waste Heat Recovery and Utilizationmentioning

confidence: 99%

“…Davies et al [15] studied the possibilities of DH networks in London and the potential for waste heat utilization. The possible savings of waste heat reuse in a DH were calculated assuming that the waste heat would replace natural gas based heat production.…”

Section: Literature Reviewmentioning

confidence: 99%

See 3 more Smart Citations

Future views on waste heat utilization – Case of data centers in Northern Europe

Wahlroos

Pärssinen

Rinne

et al. 2018

Renewable and Sustainable Energy Reviews

133

View full text Add to dashboard Cite

overview of upcoming data center projects where waste heat is utilized is presented. Especially in Finland data center operators are planning to reuse waste heat in district heating. However, business models between the district heating network operator and data center operator are often not transparent. The implications of economics and emissions on waste heat utilization in district heating were analyzed through life cycle assessment. Currently the biggest barriers for utilizing waste heat are the low quality of waste heat (e.g. low temperature or unstable source of heat) and high investment costs. A systematic 8-step change process was suggested to ensure success in changing the priority of waste heat utilization in the data center and district heating market. Relevant energy efficiency metrics were introduced to support rational decision-making in the reuse of waste heat. Economic calculations showed that the investment payback time is under the estimated lifetime of the heat pump equipment, when waste heat was utilized in district heating. However, the environmental impact of waste heat utilization depends on the fuel, which waste heat replaces.

show abstract

Section: Solutions For Waste Heat Recovery and Utilizationmentioning

confidence: 99%

“…The best locations for capturing waste heat have been discussed in [10] and [15]. In air-cooled servers the best locations are at the return air flow to the CRAC/CRAH.…”

Section: Solutions For Waste Heat Recovery and Utilizationmentioning

confidence: 99%

Section: Solutions For Waste Heat Recovery and Utilizationmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

See 2 more Smart Citations

Future views on waste heat utilization – Case of data centers in Northern Europe

Wahlroos

Pärssinen

Rinne

et al. 2018

Renewable and Sustainable Energy Reviews

133

View full text Add to dashboard Cite

show abstract

“…Urban waste heat stems from commercial processes or from structured operations that are undertaken daily. For example, heat can be recovered from data centres and sewage water [4][5][6][7][8][9][10]. The main challenge of urban waste heat recovery is that the heat is normally low-enthalpy (around 20-40 • C).…”

Section: Introductionmentioning

confidence: 99%

Contracts, Business Models and Barriers to Investing in Low Temperature District Heating Projects

2019

View full text Add to dashboard Cite

Approximately 1.2 EJ of energy are potentially available for recovery each year from urban heat sources in the EU. This corresponds to more than 10 percent of the EU's total energy demand for heat and hot water. There are, however, a number of challenges to be met before urban waste heat recovery can be performed on a wide scale. This paper focuses on the non-technical issues related to urban waste heat recovery and is written on the basis of opinions gathered from stakeholders in the field. Three non-technical issues are focused upon. First, a number of important barriers to wide scale urban waste recovery are identified, and where applicable, recommendations are made regarding how to overcome these barriers. Second, important issues and challenges regarding contract design are identified and discussed. Key elements of heat supply contracts between the district heating company and the owner of the waste heat are described. Finally, the impact on business models of properties specific to urban waste heat recovery are discussed. Data were collected from two separate sources, both related to the ReUseHeat Horizon 2020 project, which addresses the application of urban waste heat recovery in existing district heating networks. First, a number of interviews with stakeholders were carried out. Second, information was collected from demonstrator sites involved in the ReUseHeat project. It was concluded that, for urban waste heat recovery to be taken up on a wide scale, there is still a large amount of work to do to overcome these major issues. This paper is novel in that key non-technical issues of urban waste heat recovery are discussed from the perspective of a large sample of actual stakeholders and practitioners in the field.

show abstract

Untersuchung überlagerter Effekte von Druckverlust und Totvolumen durch Rekuperation am isobaren Expansionsmotor

Mügge

Kronberg

Glushenkov

et al. 2023

Chemie Ingenieur Technik

View full text Add to dashboard Cite

Die Wirtschaftlichkeit von Wärmemotoren wird maßgeblich durch die Rückführung von Wärme in Rekuperatoren beeinflusst. Beim isobaren Expansionsmotor vom Bush‐Typ, einem Wärmemotor, der bereits mit Wärmequellen ab 60 °C betrieben werden kann, steigt der thermische Wirkungsgrad durch den Einsatz von Rekuperatoren signifikant. Gleichzeitig wirken sich das Fluidvolumen des Wärmeübertragers sowie der beim Betrieb auftretende Druckverlust negativ auf den thermischen Wirkungsrad aus. In dieser Arbeit wird der Zusammenhang von Totvolumen, Druckverlust und Wärmerückgewinnung untersucht und Empfehlungen für den Betrieb von Rekuperatoren am isobaren Expansionsmotor gegeben.

show abstract

Using data centres for combined heating and cooling: An investigation for London

Cited by 108 publications

References 11 publications

Future views on waste heat utilization – Case of data centers in Northern Europe

Future views on waste heat utilization – Case of data centers in Northern Europe

Contracts, Business Models and Barriers to Investing in Low Temperature District Heating Projects

Untersuchung überlagerter Effekte von Druckverlust und Totvolumen durch Rekuperation am isobaren Expansionsmotor

Contact Info

Product

Resources

About