Possibility of using adsorption refrigeration unit in district heating network

Grzebielec, Andrzej; Rusowicz, А.; Jaworski, Maciej; Laskowski, Rafał

doi:10.1515/aoter-2015-0019

Cited by 15 publications

(7 citation statements)

References 9 publications

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“…In order to increase the energy efficiency of the power plant, a proportion of the heat generated in the cogeneration process will be used to generate coolant through the use of adsorption chillers for this purpose. A potential place that is the source of supply heat for the chiller is the return flow of district water, which is characterised by a relatively low temperature albeit sufficient for the adsorption cooling unit, T z = 57 °C and by a high water mass-flow rate, ṁ = 999 kg/s [13][14][15].…”

Section: Adsorption Chillersmentioning

confidence: 99%

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: Adsorption Chillersmentioning

confidence: 99%

Using adsorption chillers for utilising waste heat from power plants

et al. 2019

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“…In light of the above, the use of adsorption chiller can only be economically viable when it is supplied with renewable energy or waste heat. Otherwise, taking the obtained results and the current prices of electricity and district heating in Poland into account, it can be stated that the competitiveness of adsorption chillers to their compressor counterparts would require the coefficient of performance of at least 1.52 (Grzebielec et al 2015). Another challenge associated with the operation of these refrigeration devices is the discontinuity of their operation, i.e.…”

Section: Advantages and Technical Barriers Related To The Use Of Adsomentioning

confidence: 99%

The use of adsorption chillers for waste heat recovery

Kuchmacz¹,

Bieniek²,

Mika³

2019

Polityka Energetyczna – Energy Policy Journal

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The purpose of this article was to discuss the use of adsorption chillers for waste heat recovery. The introduction discusses the need to undertake broader measures for the effective management of waste heat in the industry and discusses the benefits and technical problems related to heat recovery in industrial plants. In addition, heat sources for adsorption chillers and their application examples were described. The principle of operation of adsorption chillers is explained in the next chapter. Heat sources for adsorption chillers are indicated and their application examples are described. The above considerations have allowed the benefits and technical obstacles related to the use of adsorption chillers to be highlighted. The currently used adsorbents and adsorbates are discussed later in the article. The main part of the paper discusses the use of adsorption chillers for waste heat management in the glassworks. The calculations assumed the natural gas demand of 20.1 million m 3 per year and the electricity demand of 20,000 MWh/year. As a result of conducted calculations, a 231 kW adsorption chiller, ensuring the annual cold production of 2,021 MWh, was selected. The economic analysis of the proposed solution has shown that the investment in the adsorption chiller supplied with waste heat from the heat recovery system will bring significant economic benefits 90 after 10 years from its implementation, even with total investment costs of PLN 1,900,000. However, it was noted that in order to obtain satisfactory economic results the production must meet the demand while the cost of building a heat recovery system shall not exceed PLN 1 million.

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“…The LDF model is a compromise between solution accuracy and calculation efficiency, and is adequate in most adsorption applications [10][11][12][13][14][15]. The boundary conditions for the HTF are: Adsorption:…”

Section: Mathematical Model Of Adsorption Heat Pumpmentioning

confidence: 99%

Modeling the Performance of Water-Zeolite 13X Adsorption Heat Pump

Kowalska

Ambrożek

2017

Archives of Thermodynamics

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The dynamic performance of cylindrical double-tube adsorption heat pump is numerically analysed using a non-equilibrium model, which takes into account both heat and mass transfer processes. The model includes conservation equations for: heat transfer in heating/cooling fluids, heat transfer in the metal tube, and heat and mass transfer in the adsorbent. The mathematical model is numerically solved using the method of lines. Numerical simulations are performed for the system water-zeolite 13X, chosen as the working pair. The effect of the evaporator and condenser temperatures on the adsorption and desorption kinetics is examined. The results of the numerical investigation show that both of these parameters have a significant effect on the adsorption heat pump performance. Based on computer simulation results, the values of the coefficients of performance for heating and cooling are calculated. The results show that adsorption heat pumps have relatively low efficiency compared to other heat pumps. The value of the coefficient of performance for heating is higher than for cooling Keywords: Desorption; Adsorption; Mathematical simulation; Heat pump; Coefficient of performance Nomenclature A -adsorption potential, J/mol E0 -characteristic energy of the adsorbent, J/mol COP -coefficient of performance COP h -coefficient of performance for heating * Corresponding Author.

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Possibility of using adsorption refrigeration unit in district heating network

Cited by 15 publications

References 9 publications

Using adsorption chillers for utilising waste heat from power plants

Using adsorption chillers for utilising waste heat from power plants

The use of adsorption chillers for waste heat recovery

Modeling the Performance of Water-Zeolite 13X Adsorption Heat Pump

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