Objective
A MONOVALENT ABSORPTION HEAT PUMP OF 10 KW IS BEING DEVELOPED WHICH WILL DELIVER HEAT AT 70 DEGREES C. THIS IN ORDER TO BE USED WITH EXISTING RADIATORS IN AN EXISTING BUILDING. A FIRST WORKING FLUID PAIR WHICH WAS INVESTIGATED (METHANOL/MIXED BROMIDE) DID NOT OPERATE SATISFACTORILY DUE TO THE DECOMPOSITION OF METHANOL AT 190 DEGREES C. SINCE THEN EXTENSIVE SCREENING TESTS HAVE BEEN CARRIED OUT IN A SEARCH FOR NEW FLUID PAIRS. THIS INCLUDED WATER AS A REFRIGERANT IN COMBINATION WITH SALT. ALSO THE WORKING FLUIDS, METHALAMINE AND TRIFLUORETHANOL HAVE BEEN INVESTIGATED BUT THE LAST FLUID IS NOW CONSIDERED TO HAVE INACCEPTABLE HIGH TOXITY LEVELS. APART FROM TOXITY THE MAIN CRITERIA ARE TEMPERATURE LIFT AND PREVENTION OF CRYSTALLIZATION. PRELIMINARY RESULTS SHOW THAT SATER-SALT SOLUTIONS HAVE A POTENTIAL TO BE USED FOR A HIGH TEMPERATURE HEAT PUMP. SODIUM-HYDROXIDE APPREARS TO BE THE MOST ATTRACTIVE ABSORBENT BUT IS VERY CORROSIVE. SOLUTIONS FOR THIS CORRISIVITY HOWEVER MAY BE FOUND. INTERESTING SUGGESTIONS HAVE BEEN MADE TO AVOID CRYSTALLIZATION. TO SOLVE THE PROBLEM OF WATER FREEZING AT 0 DEGREE C, EITHER 20 % ETHYLENE GLYCOL OR 15 % CACL2 WAS ADDED. IN THIS WAY HEAT PUMPS CAN OPERATE WITH EVAPORATOR TEMPERATURES DOWN TO - 7 DEGREES C.
Fields of science (EuroSciVoc)
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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.
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.
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Coordinator
MK43 0AL BEDFORD
United Kingdom
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.