Objective
To study experimentally and theoretically tubular heat exchangers in which phase change occurs. The objective is to improve the distribution of vapour-liquid mixtures at the entrance and between tubular heat exchanger sections.
An experimental and theoretical study has been made of tubular heat exchangers in which phase change occurs. The efficiency of heat exchangers in which phase change occurs, depends strongly on the distribution of the vapour liquid mixture. This is the case in evaporators and condensers with phase change in the tubes. In view of the large number of applications of such heat exchangers (such as in industrial processes, refrigerators, heat pumps), improvements could lead to large energy savings.
The programme consists of experimental studies and the development of a model, based on the Computational Fluid Dynamics TRIO Code, which simulates 2 phase (vapour liquid) flow and which was evaluated with data resulting from experimental work.
Heat exchangers with air water mixtures were studied on the TRIO Code was validated to include vapour liquid mixtures. A 2-phase heat exchanger was also developed for applications in refrigeration. This will be installed for testing in a 250 kW refrigerator, with R22 as the working fluid. In this experimental set up sensors which measure the mass flow of the vapour liquid mixture will be used.
Measurements have been made of maldistribution in shell and tube heat exchangers using a 2-phase probe developed during the project. Data show that improvements could be made to the design of these heat exchangers, leading to better performance (eg increased evaporation duty and reduced pressure drop).
The efficiency of heat exchangers in which phase change occurs, depends strongly on the distribution of the vapour-liquid mixture. This is the case in evaporators and condensers with phase change in the tubes. In view of the large number of applications of such heat exchangers (such as in industrial processes, refrigerators, heat pumps), improvements could lead to large energy savings.
The programme consists of experimental studies and the development of a model, based on the Computational Fluid Dynamics TRIO Code, which simulates two phase (vapour-liquid) flow and which was evaluated with data resulting from experimental work.
Heat exchangers with air-water mixtures were studied by GRETh which were also carried out the validation of its TRIO Code to include vapour-liquid mixtures. CIAT developed a two-phase heat exchanger for applications in refrigeration. This will be installed for testing in a CIAT 250 kW refrigerator, with R22 as the working fluid (HWU). In this experimental set up sensors, which measure the mass flow of the vapour-liquid mixture (developed by CENERTEC), will be used.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology mechanical engineering thermodynamic engineering
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering sensors
- natural sciences physical sciences classical mechanics fluid mechanics fluid dynamics computational fluid dynamics
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Programme(s)
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
38041 Grenoble
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.