Objective
The main objective is to develop a vacuum steam jet ejector cooling system usin g only water as refrigerant and excessive heat from a biogas fired gas engine g enerating electricity. The RTD work will be targeted towards the agro- and food -industry. Refrigeration of milk was chosen to serve for verification and valid ation purposes. The RTD shall, however, be undertaken in a general technical co ntext in aiming improved outlets for heat related to decentralised CHP from bio gas. It relates to co-utilisation of a potential for biogas production and elec tricity generation where a reasonable heat utilisation normally is difficult. A RTD feasibility study, carried out for refrigeration of milk, has shown that t he vacuum steam jet ejector, compared to conventional cooling technology with c hemical refrigerants, can save substantial amounts of electricity, up to 32 kWh /tons milk. It can simultaneously promote extension of cost-competitive renewab le energy - under consideration of the given constraints. Production of one ton s of milk leaves organic waste residuals which by means of modern biogas techno logy presents an electricity potential of app. 250 kWh beyond the heat of which app. 10 -20% can run the vacuum steam jet ejector cooler. An important aspect from an environmental point of view is that chemical refrigerants can be avoide d. In the search for new long term refrigerants water has attracted the attenti on because it is environmentally harmless. Water as a refrigerant and the appli cation of modern technology to the processes hold future possibilities as such refrigerators has a potential of being very energy efficient. The main constrai nts in the application of water as refrigerant are that the process must be und er vacuum and the application temperature has to be above 0 C. The ejector prin ciple hold a potential of providing vacuum out of heated water without using el ectrical energy. The required temperature level above 0 C can be dealt with in milk refrigeration, where the temperature shall be lowered from 39 C to 4 C, bu t also in several other sectors within the food industry like slaughterhouses, breweries etc.. The vacuum steam jet ejector is definitely pre-competitive in e nabling a cooling temperature level 0 4 C. The ejector cooling principle itself is known to air conditioning in the temperature level 9 - 16 C. It has neither been applied in food refrigeration (esp. milk refrigeration) nor at the temper ature level 0 - 4 C. An innovative aspect from an industrial point of view is t hat the vacuum steam jet ejector has never been related to sustain biogas CHP o ut of waste residuals. The RTD shall make final design of the specific vacuum s team jet ejector and systematic laboratory tests enabling issuing of consolidat ed process guarantees from the SME producer to end users. The transnational cor e group of SME proposers consists of one prime proposer in possession of the te chnical concept subject to RTD and 5 potential end users. The group of 2 transn ational RTD performers consists of a multinational private engineering company as prime RTD performer, also nominated as coordinator, together with a SME priv ate research institution with thorough experience in the basic research concern ed.
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.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques.
- engineering and technologymechanical engineeringthermodynamic engineering
- engineering and technologyelectrical engineering, electronic engineering, information engineeringelectrical engineeringpower engineeringelectric power generationcombined heat and power
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Topic(s)
Call for proposal
Data not availableFunding Scheme
CRS - Cooperative research contractsCoordinator
8700 Horsens
Denmark