Low grade thermal energy sources and uses from the process industry in the UK

Ammar, Yasmine; Joyce, Sharon; Norman, Rosemary; Wang, Yaodong; Roskilly, Anthony Paul

doi:10.1016/j.apenergy.2011.06.003

Cited by 278 publications

(107 citation statements)

References 89 publications

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“…The importance of a holistic view is raised in Ammar et al [10] and hence, there is a need for system studies within the field of excess heat use. The overall aim of this paper is to perform an energy systems analysis in order to recognize implications of future heat recovery (e.g.…”

Section: Aim and Implementationmentioning

confidence: 99%

“…[11] Persson and Werner [16] studies recovered excess heat in the DH system in the EU27 to reduce primary energy demand and identify a great potential for increased excess heat use if applying best member state practices. Ammar et al [10] discusses low-grade heat recovery and the authors bring forward the importance of a holistic view to increase the number of opportunities to reduce the environmental impact by heat recovery.…”

Section: Introductionmentioning

confidence: 99%

“…[7] A number of district heating (DH) systems in Sweden accept industrial excess heat as a part of their fuel mix and in 2011 excess heat accounted for 7.2% of the heat deliveries in the Swedish DH networks [8; 9]. Several research studies investigate excess heat recovery (both thermal applications and heat driven electricity generation) and heat storage technologies [10][11][12][13][14][15][16][17][18]. Johansson and Söderström [13] compare and evaluate heat driven electricity generation technologies for recovery of low-temperature industrial excess heat based on heat source temperature, efficiency, capacity, economy and potential electricity production.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Industrial excess heat use: Systems analysis and CO2 emissions reduction

Viklund¹,

Karlsson²

2015

Applied Energy

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The adopted energy efficiency directive stresses the use of excess heat as a way to reach the EU target of primary energy use. Use of industrial excess heat may result in decreased energy demand, CO2 emissions reduction, and economic gains. In this study, an energy systems analysis is performed with the aim of investigating how excess heat should be used, and the impact on CO2 emissions. The manner in which the heat is recovered will affect the system. The influence of excess heat recovery and the trade-off between heat recovery for heating or cooling applications and electricity production has been investigated using the energy systems modeling tool reMIND. The model has been optimized by minimizing the system cost. The results show that it is favorable to recover the available excess heat in all the investigated energy market scenarios, and that heat driven electricity production is not a part of the optimal solution. The trade-off between use of recovered excess heat in the heating or cooling system depends on the energy market prices and the type of heat production. The introduction of excess heat reduces the CO2 emissions in the system for all the studied energy market scenarios.

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Section: Aim and Implementationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Industrial excess heat use: Systems analysis and CO2 emissions reduction

Viklund¹,

Karlsson²

2015

Applied Energy

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“…A number of industrial applications require low temperature cooling (below zero) like medical use (Aslam et al 2009) and food industry (Ammar et al 2012). Commercially available low temperature adsorption systems use chemical sorption technique with ammonia as the refrigerant and various salts as adsorbents (Fan et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Investigation of activated carbon/ethanol for low temperature adsorption cooling

Elsayed

Al-Dadah

Mahmoud

et al. 2018

International Journal of Green Energy

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Commercially available adsorption cooling systems use water/silica gel, water/zeolite and ammonia/ chloride salts working pairs. The water based pairs are limited to work above 0 °C due to the water high freezing temperature, while ammonia has the disadvantage of being toxic.Ethanol is a promising refrigerant due to its low freezing point (161 K), non-toxicity, zero ozone depletion and low global warming potential. Activated carbon (AC) is a porous material with high degree of porosity (500-3000 m 2 /g) that has been used in wide range of applications. Using Dynamic Vapour Sorption (DVS) test facility, this work characterizes the ethanol adsorption of eleven commercially available activated carbon materials for cooling at low temperature of -15 o C. DVS adsorption results show that Maxsorb has the best performance in terms of ethanol uptake and adsorption kinetics compared to the other tested materials. The Maxsorb/ethanol adsorption process has been numerically modeled using computational fluid dynamics (CFD) and simulation results are validated using the DVS experimental measurements. The validated CFD simulation of the adsorption process is used to predict the effects of adsorbent layer A c c e p t e d M a n u s c r i p t 2 thickness and packing density on cycle uptake for evaporating temperature of -15 o C. Simulation results show that as the thickness of the Maxsorb adsorbent layer increases, its uptake decreases.As for the packing density, the amount of ethanol adsorbed per plate increases with the packing density reaching maximum at 750 kg/m 3 . This work shows the potential of using Maxsorb/ethanol in producing low temperature cooling down to -15 o C with specific cooling energy reaching 400kJ/kg.

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“…A few studies have been conducted using exergy analysis to examine either a humidification -dehumidification (HDH) desalination [4,5,6,7] or reverse osmosis (RO) desalination [8,9,10,11,12,13] technology for water production. Further, a recent study considering energy analysis and design of a novel desalination system using combined HDH and RO was conducted by Narayan et al [2].…”

Section: Introductionmentioning

confidence: 99%

Exergy analysis of a high-temperature-steam-driven, varied-pressure, humidification–dehumidification system coupled with reverse osmosis

2013

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In this study, exergy analysis of a novel desalination system is presented and discussed. The water desalination is carried out using combined humidification-dehumidification and reverse osmosis technologies. Six system performance parameters are examined: overall exergetic efficiency, equivalent electricity consumption, specific exergy destruction, specific exergy lost, and total true specific exergy lost, as well as the exergy destruction ratios of the main components. The total true specific exergy lost is a new parameter presented in this study. It is a function of summation of total the exergy destruction rate and loss per total mass flow rate of the total pure water produced. This parameter is found to be a useful parameter to assess the exergetic performance of the system considered. By contrast, use of overall exergetic efficiency as an assessment tool can result in misleading conclusions for such a desalination system and, hence, is not recommended. Furthermore, this study reveals that the highest exergy destruction occurs in the thermal vapor compressor, which accounts for 50% of the total exergy destruction of the system considered. This study, in addition, demonstrates that the specific exergy destruction of the dehumidifier and TVC are the parameters that most strongly affect the performance of the system.

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Low grade thermal energy sources and uses from the process industry in the UK

Cited by 278 publications

References 89 publications

Industrial excess heat use: Systems analysis and CO2 emissions reduction

Industrial excess heat use: Systems analysis and CO2 emissions reduction

Investigation of activated carbon/ethanol for low temperature adsorption cooling

Exergy analysis of a high-temperature-steam-driven, varied-pressure, humidification–dehumidification system coupled with reverse osmosis

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