scholarly journals Simulation of heat recovery from data centers using heat pumps

2021 ◽  
Author(s):  
Mohammad Sharfuddin ◽  
Lars Erik Øi
Keyword(s):  
Heat Recovery ◽  
Data Centers ◽  
Heat Pumps

Saving Primary Energy Consumption Through Exergy Analysis of Combine Distillation and Power Plant

2012 ◽  
Vol 9 (2) ◽  
pp. 65
Author(s):  
Alhassan Salami Tijani ◽  
Nazri Mohammed ◽  
Werner Witt
Keyword(s):  
Energy Consumption ◽  
Power Plant ◽  
Heat Pump ◽  
Heat Recovery ◽  
Energy Savings ◽  
Primary Energy ◽  
Heat Pumps ◽  
Saturated Steam ◽  
Distillation Unit ◽  
Primary Energy Consumption

Industrial heat pumps are heat-recovery systems that allow the temperature ofwaste-heat stream to be increased to a higher, more efficient temperature. Consequently, heat pumps can improve energy efficiency in industrial processes as well as energy savings when conventional passive-heat recovery is not possible. In this paper, possible ways of saving energy in the chemical industry are considered, the objective is to reduce the primary energy (such as coal) consumption of power plant. Particularly the thermodynamic analyses ofintegrating backpressure turbine ofa power plant with distillation units have been considered. Some practical examples such as conventional distillation unit and heat pump are used as a means of reducing primary energy consumption with tangible indications of energy savings. The heat pump distillation is operated via electrical power from the power plant. The exergy efficiency ofthe primary fuel is calculated for different operating range ofthe heat pump distillation. This is then compared with a conventional distillation unit that depends on saturated steam from a power plant as the source of energy. The results obtained show that heat pump distillation is an economic way to save energy if the temperaturedifference between the overhead and the bottom is small. Based on the result, the energy saved by the application of a heat pump distillation is improved compared to conventional distillation unit.

scholarly journals Heat Pump Bridge Analysis Using the Modified Energy Transfer Diagram

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 137
Author(s):  
Florian Schlosser ◽  
Heinrich Wiebe ◽  
Timothy G. Walmsley ◽  
Martin J. Atkins ◽  
Michael R. W. Walmsley ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Heat Pump ◽  
Heat Recovery ◽  
Heat Pumps ◽  
Coefficient Of Performance ◽  
Combined Application ◽  
Recovery Potential ◽  
Composite Curve ◽  
And Performance ◽  
The Individual

Heat pumps are the key technology to decarbonise thermal processes by upgrading industrial surplus heat using renewable electricity. Existing insight-based integration methods refer to the idealised Grand Composite Curve requiring the full exploitation of heat recovery potential but leave the question of how to deal with technical or economic limitations unanswered. In this work, a novel Heat Pump Bridge Analysis (HPBA) is introduced for practically targeting technical and economic heat pump potential by applying Coefficient of Performance curves into the Modified Energy Transfer Diagram (METD). Removing cross-Pinch violations and operating heat exchangers at minimum approach temperatures by combined application of Bridge Analysis increases the heat recovery rate and reduce the temperature lift to be pumped at the same time. The insight-based METD allows the individual matching of heat surpluses and deficits of individual streams with the capabilities and performance of different market-available heat pump concepts. For an illustrative example, the presented modifications based on HPBA increase the economically viable share of the technical heat pump potential from 61% to 79%.

Hybrid geothermal heat pumps for cooling telecommunications data centers

2019 ◽  
Vol 188-189 ◽  
pp. 120-128 ◽  
Author(s):  
David P. Zurmuhl ◽  
Maciej Z. Lukawski ◽  
Gloria A. Aguirre ◽  
William R. Law ◽  
George P. Schnaars ◽  
...  
Keyword(s):  
Data Centers ◽  
Heat Pumps ◽  
Geothermal Heat

scholarly journals Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump

2017 ◽  
Vol 25 ◽  
pp. 128-135 ◽  
Author(s):  
Pavlo Saik
Keyword(s):  
Heat Recovery ◽  
Coal Gasification ◽  
Waste Heat ◽  
Renewable Energy Sources ◽  
Heat Removal ◽  
Heat Pumps ◽  
Technological Scheme ◽  
Underground Coal Gasification ◽  
Waste Dump ◽  
Waste Dumps

The aim of this paper is to study the methods and develop technological scheme for thermal energy removal from coal mine rock waste dumps. The prospects of renewable energy sources development in Ukraine are analyzed. A number of available ways for using the sources of waste heat of mining enterprises, namely: outlet ventilation flow, mine water and other rock waste dumps, are investigated. The technological scheme of heat recovery from rock waste dump using heat pumps, which are component segments of the heat pump geosystem on the basis of borehole underground coal gasification, is developed.

scholarly journals Improved measurements for better decision on heat recovery solutions with heat pumps

2012 ◽  
Vol 35 (6) ◽  
pp. 1558-1569 ◽  
Author(s):  
Natasa Djuric ◽  
Vojislav Novakovic ◽  
Frode Frydenlund
Keyword(s):  
Heat Recovery ◽  
Heat Pumps
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