Applicability of adsorption cooling/desalination systems driven by low-temperature waste heat

Stefański, Sebastian; Nowak, Wojciech; Sztekler, Karol; Kalawa, Wojciech; Siwek, Tomasz

doi:10.1088/1755-1315/214/1/012126

Cited by 7 publications

(6 citation statements)

References 34 publications

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“…The greater quantity of heat generated from combusting fuels will be effectively utilized to, inter alia, feed chillers and the cold produced will be used for example for air conditioning. This will contribute to a reduction in energy consumption for cooling purposes while at the same time reducing the amount of heat that remains unused in the process of generating electricity at conventional power plants, and consequently to savings in fossil fuels and improving the condition of the environment we live in [3][4][5].…”

Section: S1145mentioning

confidence: 99%

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Using adsorption chillers for utilising waste heat from power plants

et al. 2019

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Original scientific paper https://doi.org/10.2298/TSCI19S4143S At present, energy efficiency is a very important issue and it is power generation facilities, among others, that have to confront this challenge. The simultaneous production of electricity, heat and cooling, the so-called trigeneration, allows for substantial savings in the chemical energy of fuels. More efficient use of the primary energy contained in fuels translates into tangible earnings for power plants while reductions in the amounts of fuel burned, and of non-renewable resources in particular, certainly have a favorable impact on the natural environment. The main aim of the paper was to investigate the contribution of the use of adsorption chillers to improve the energy efficiency of a conventional power plant through the utilization of combined heat and power waste heat, involving the use of adsorption chillers. An adsorption chiller is an item of industrial equipment that is driven by low grade heat and intended to produce chilled water and desalinated water. Nowadays, adsorption chillers exhibit a low coefficient of performance. This type of plant is designed to increase the efficiency of the primary energy use. This objective as well as the conservation of non-renewable energy resources is becoming an increasingly important aspect of the operation of power generation facilities. As part of their project, the authors have modelled the cycle of a conventional heat power plant integrated with an adsorption chiller-based plant. Multi-variant simulation calculations were performed using IPSEpro simulation software.

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Section: S1145mentioning

confidence: 99%

“…Two-bed adsorption cooling-desalination system[5]; CWcooling water, HWhot water S1146 THERMAL SCIENCE: Year 2019, Vol. 23, Suppl.…”

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confidence: 99%

Using adsorption chillers for utilising waste heat from power plants

et al. 2019

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“…At the same time, this is a field of searching for new solutions that take into account the balance between good thermal conductivity and sufficiently high sorption capacity [8,14]. Sorption materials that can work with water are, e.g., silica gel, zeolite and activated alumina [15]. Some very important characteristics of the sorbents are the ability to adsorb a maximum amount of adsorbate per unit mass and a low specific heat [8,15].…”

Section: Introductionmentioning

confidence: 99%

“…Sorption materials that can work with water are, e.g., silica gel, zeolite and activated alumina [15]. Some very important characteristics of the sorbents are the ability to adsorb a maximum amount of adsorbate per unit mass and a low specific heat [8,15]. Particularly important from the point of view of the heat source and chiller operation is the bed regeneration temperature.…”

Section: Introductionmentioning

confidence: 99%

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Optimisation of Operation of Adsorption Chiller with Desalination Function

Sztekler

2021

Energies

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The demand for electricity is growing rapidly along with economic development and increasing population. At present, its production is mainly based on non-renewable sources, which has negative impacts on the environment and contributes to global warming. A large proportion of the produced electricity is consumed by refrigeration equipment. Climate change and the progress of civilisation are additionally increasing the demand for cooling, with increasing electricity consumption as a consequence. One of the options for obtaining eco-friendly cooling is the use of adsorption chillers. These devices are powered by low-temperature heat and their operation only requires a small amount of electrical energy. The source of low-temperature heat can be, e.g., waste heat generated in many industrial processes. Its use allows one to increase energy efficiency and achieve additional financial benefits. However, adsorption chillers are characterised by low coefficients of performance. This paper presents possibilities to improve their performance. It also presents the results of tests carried out on a three-bed adsorption chiller with desalination function. The aim of the investigation was to determine the effect of the cycle time on the coefficient of performance (COP) and specific cooling power (SCP). The working pair was silica gel and water. The results confirmed the effect of the duration of adsorption and desorption on the COP and SCP of the adsorption chiller. Increasing the duration of the cycle led to an increase in the COP.

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