Techno-economic analysis of the thermal energy saving options for high-voltage direct current interconnectors

Giampieri, Alessandro; Ma, Zhiwei; Ling‐Chin, Janie; Smallbone, Andrew; Khan, Ilyas; Hemphill, Stephen; Roskilly, Anthony Paul

doi:10.1016/j.apenergy.2019.04.003

Cited by 14 publications

(7 citation statements)

References 42 publications

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“… The capital cost of the liquid desiccant technology was based on the equation for the specific cost depending on the air volume supply air developed in Ref. [ 128 ], while the annual operating cost was assumed as 5% of the capital cost [ 128 ]. …”

Section: Potential Scrubbing Technology: Liquid Desiccantmentioning

confidence: 99%

An overview of solutions for airborne viral transmission reduction related to HVAC systems including liquid desiccant air-scrubbing

Giampieri

Ling‐Chin

et al. 2022

Energy

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Section: Potential Scrubbing Technology: Liquid Desiccantmentioning

confidence: 99%

An overview of solutions for airborne viral transmission reduction related to HVAC systems including liquid desiccant air-scrubbing

Giampieri

Ling‐Chin

et al. 2022

Energy

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“…• The capital cost of the liquid desiccant technology was based on the equation for the specific cost depending on the air volume supply air developed in [208], while the annual operating cost was estimated as 5% of the capital cost [208].…”

Section: Case Studymentioning

confidence: 99%

An overview of solutions for airborne viral transmission reduction related to HVAC systems including liquid desiccant air-scrubbing

Giampieri¹,

Ling‐Chin²,

Ma³

et al. 2021

Preprint

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The world is facing on-going challenges due to the spread of the coronavirus SARS-CoV-2, which is affecting the health of people worldwide and the economy of countries. Social distancing, lockdown and quarantine measures have been implemented globally to limit the spread of the virus with a profound impact on people’s lives. These are interventions which are not considered to be permanent and reproducible in the long-term. As more evidence is growing around the airborne transmission routes of the virus, as previously identified for other viruses such as tuberculosis, measles, influenza and coronaviruses, the role of heating, ventilation and air-conditioning (HVAC) systems in buildings, enclosed spaces and public transport in limiting the transmission of airborne pathogens has become a topic of significant relevance. Although the HVAC strategies recommended by professional engineering associations are capable of minimising the transmission of airborne pathogens, they are also responsible for an increase in energy consumption and possibly in a reduction of thermal comfort for occupants. The objective of the study is to review the role of HVAC in airborne viral transmission, to estimate the energy penalty associated with the implementation of the main HVAC strategies for transmission reduction and understand the potential of liquid desiccant technology as an air scrubber. That is capable to a) energy-efficiently control temperature and humidity in buildings, enclosed spaces and public transport; b) increase the indoor air quality by offering the conditions of temperature and humidity less favourable to the growth, proliferation and infectivity of microorganisms; and c) inactivate pathogens. The main factors involved in the process of the inactivation of viruses or pathogens by liquid desiccant solutions are also described together with possible modifications to the solutions to increase their heat and mass transfer and sanitising characteristics. The study is ended by an economic evaluation of the potential energy benefits resulting from the use of liquid desiccant technology. It is concluded that the technology could be particularly favourable in those buildings where humidity control and/or moisture removal is required or in buildings where viruses are more likely to be present, such as in healthcare facilities/operating rooms, or in the event of an airborne viral outbreak.

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“…Rapid growing demand for electric power and continuous effort of miniaturization of high‐voltage direct current (HVDC) devices drive heat flux to the megawatt range . In a high power transmission system, devices such as HVDC converters that transform alternating current (AC) to direct current (DC) and vice versa via controllable electric switches, high power dissipation can be up to 9.72 kW, which is nearly 30% of the total HVDC power loss .…”

Section: Introductionmentioning

confidence: 99%

High performance cooling of a HVDC converter using a fatty acid ester‐based phase change dispersion in a heat sink with double‐layer oblique‐crossed ribs

Fischer

Qiao³

et al. 2020

Int J Energy Res

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The paper concerns with a high performance cooling method for a HVDC converter using fatty acid ester-based phase change dispersion (PCD) in a heat sink with double-layer oblique-crossed ribs. Thermo-physical properties of PCDs were first characterized under both solid and liquid states, and the cooling performance of the heat exchanger was then experimentally examined, by heating two copper blocks clamped closely to the aluminium heating surfaces. A threedimensional Euler-Euler multiphase approach was further performed to evaluate the thermal performance under different operating conditions including heating power, flowrate and PCD concentration. The results showed that the

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Techno-economic analysis of the thermal energy saving options for high-voltage direct current interconnectors

Cited by 14 publications

References 42 publications

An overview of solutions for airborne viral transmission reduction related to HVAC systems including liquid desiccant air-scrubbing

An overview of solutions for airborne viral transmission reduction related to HVAC systems including liquid desiccant air-scrubbing

An overview of solutions for airborne viral transmission reduction related to HVAC systems including liquid desiccant air-scrubbing

High performance cooling of a HVDC converter using a fatty acid ester‐based phase change dispersion in a heat sink with double‐layer oblique‐crossed ribs

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