Searched for: subject:"heat%5C+pumps"
(1 - 16 of 16)
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Wang, M. (author)
Improving efficiencies of thermal energy conversion systems is an important way to slow down global warming and mitigate climate change. Vapor absorption heat pump and refrigeration cycles are highly efficient ways of heating and cooling. These thermally activated systems also provide opportunities for the integration with a wide spectrum of low...
doctoral thesis 2019
document
de Lange, M.F. (author), Kapteijn, F. (author), Moultos, O. (author), Vlugt, T.J.H. (author)
A computational screening of 2930 experimentally synthesized metal-organic frameworks (MOFs) is carried out to find the best-performing structures for adsorption-driven cooling (AC) applications with methanol and ethanol as working fluids. The screening methodology consists of four subsequent screening steps for each adsorbate. At the end of...
journal article 2018
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Gudjonsdottir, V. (author), Infante Ferreira, C.A. (author), Rexwinkel, G. (author), Kiss, AA (author)
Upgrading waste heat by compression resorption heat pumps (CRHP) has the potential to make a strong impact in industry. The efficiency of CRHP can be further improved by using alternative working fluids. In this work, the addition of carbon dioxide to aqueous ammonia solutions for application in CRHP is investigated. The previously published...
journal article 2017
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Pineda Quijano, Diego (author), Infante Ferreira, C.A. (author), Duivenvoorden, Wil (author), Mieog, Juriaan (author), van der Noortgaete, Tom (author), van Velpen, Bart (author)
The recovery of cold energy during the regasification of Liquefied Natural Gas (LNG) has gained attention in recent years due to the fast growth of the LNG trade market and the increasing importance that governments are giving to energy efficiency and sustainability. Near 200 kWh/ton of LNG are potentially recoverable during the regasification...
conference paper 2017
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Shi, Liang (author), Gudjonsdottir, V. (author), Infante Ferreira, C.A. (author), Rexwinkel, Glenn (author), Kiss, Anton A. (author)
Compression resorption heat pumps (CRHP) are a promising option to upgrade waste heat from industry. Alternative working fluids can further improve the efficiency of CRHP. The ternary mixture NH3-CO2-H2O has been identified as a promising working fluid for CRHP and has the potential to further enhance the coefficient of performance (COP) of the...
conference paper 2017
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Shi, Liang (author), Infante Ferreira, C.A. (author), Gerritsen, Jan (author), Kalkman, Hendrine (author)
CO2 is a promising refrigerant compared to traditional HFCs due to its insignificant global warming potential and nonthreatening to the ozone layer. It has been used as refrigerant in industrial and commercial refrigeration in recent years. With high compactness and the ability to recover heat, CO2 booster systems have been widely installed in...
conference paper 2017
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Pineda Quijano, Diego (author), van der Pal, Michel (author), Infante Ferreira, C.A. (author), Boer, de, Robert (author), Vollenbroek, Jasper (author)
The last step in the production of milk powder is drying, an energy intensive process that demands 30% to 40% of the total energy input of a typical plant. It takes place in Spray Dryers (SD), where concentrated milk is sprayed and placed in direct contact with hot and dry air that cools down and gains humidity as water is evaporated from milk....
conference paper 2017
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Wang, M. (author), Infante Ferreira, C.A. (author)
/ILs pairs are...
journal article 2017
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Wang, M. (author), Infante Ferreira, C.A. (author)
Ionic liquids (ILs), as novel absorbents, draw considerable attention for their potential roles in replacing H2O or LiBr aqueous solutions in conventional NH3/H2O or H2O/LiBr absorption chiller or heat pump cycles. In this paper, NH3/IL working pairs are proposed for implementation in parallel double effect heat pump systems. To investigate...
conference paper 2017
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Kabra, Abhishek (author), Becker, T.M. (author), Wang, M. (author), Infante Ferreira, C.A. (author), Vlugt, T.J.H. (author)
Force Field based Monte Carlo (MC) simulations are conducted to predict the performance of an absorption heat pump cycle involving NH3/ionic liquid (IL) (refrigerant/absorbent) as working pair. To investigate the thermodynamic performance of the cycle, various properties such as the enthalpy of absorption, heat capacity, and solubility of...
conference paper 2017
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de Santoli, Livio (author), Lo Basso, Gianluigi (author), Nastasi, B. (author)
This paper deals with the potential role of new hybrid CHP systems application providing both electricity and heat which are compatible with the building architectural and landscape limitations. In detail, three different plant layout options for high temperature heat production along with the electricity generation were investigated and...
conference paper 2017
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Wang, M. (author), Infante Ferreira, C.A. (author)
This paper describes a properties-optimization work for the working fluids in NH3 / ionic liquid (ILs) based single-effect absorption heat pumps. The optimum parameters of the IL can be used as criteria in screening task-specified ILs, which play the role of absorbents, in absorption heat pumps. First, a 8-parameter thermodynamic model to...
conference paper 2016
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De Lange, M.F. (author)
A novel class of materials, i.e. Metal-Organic Frameworks (MOFs), has successfully been developed that is extremely suited for application in heat pumps and chillers. They have a superior performance over commercial sorbents and may potentially contribute to considerable energy savings worldwide. Globally about 33 % of the energy consumption is...
doctoral thesis 2015
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Van de Bor, D.M. (author)
In this thesis the technical and economic performance of compression-resorption heat pumps has been investigated. The main objective of this thesis was to improve the performance and reduce the investment costs of compression-resorption heat pumps applied in process industry. A model that is able to capture the performance of most heat pumps...
doctoral thesis 2014
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Falcao, P.W. (author), Mesbah, A. (author), Suherman, M.V. (author), Wennekes, S. (author)
This study was aimed to evaluate the feasibility of using a waste heat stream from DSM for a District Heating System. A conceptual design was carried out with emphasis on the unit for upgrading the residual waste heat. Having reviewed heat pump technology, mechanical heat pump was found to be the best option for recovering the heat from the...
report 2005
document
Van de Graaf, A. (author)
The high-efficiency central heating boiler is about to reach the limits of its potential, so innovative insulation and other energy efficiency solutions are required, even though energy consumption in the Netherlands per household has dropped by 70% since 1986. Now that houses and offices are being fitted with increasingly efficient winter coats...
journal article 2005
Searched for: subject:"heat%5C+pumps"
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