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Controllable Cycle Investigation of Direct Fired Absorption Head Pump for Residential Heating Systems.

Mardorf, L. (1994) Controllable Cycle Investigation of Direct Fired Absorption Head Pump for Residential Heating Systems. In: "The International Absorption Heat Pump Conference 1994; January 19 - 21, 1994; New Orleans; Lousiana/USA; Pap. no. B 25.

Full text not available from this repository.

Abstract

A prototype of a monovalent air-to-water absorption heat pump is developed with a heating capacity rating of 25 kW for residential heating systems. The ambient air supplies the external enrgy, and the driving energy comes from a two-stage adjustable oil burner. As the temperature of the outside air rises, residential heating requirements drop, but the output heat of the heat pump remains constant. Therefore heat pumps have to turn on and off in fixed- cycles. The intermittent losses caused by the fixed-cycle operation of conventional absorption heat pumps have been avoided by a new, patented operating method. This makes this absorption heat pump particularly suitable for use in residential heating systems. Based on this system we developed a procedure that makes a controllable cycle possible for a sorption heat pump, which is suited to actual heating requirements without fixed-cycles. The significant improvement is the possibility of year-round operation in heat pump modem whereby ambient heat can be fed to the evaporator even when the outside air temperatures are below - 3 C and the sorption heat pump can operate at his optimal COP. This will be achieved by the control of the concentration of the ammonia-water solution and by theadjustment of an infinetely variable burner.

Item URL in elib:https://elib.dlr.de/24785/
Document Type:Conference or Workshop Item (Paper)
Additional Information: institution=The American Society of Mechanical Engineers, LIDO-Berichtsjahr=1993, pages=7,
Title:Controllable Cycle Investigation of Direct Fired Absorption Head Pump for Residential Heating Systems.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mardorf, L.UNSPECIFIEDUNSPECIFIED
Date:1994
Journal or Publication Title:"The International Absorption Heat Pump Conference 1994; January 19 - 21, 1994; New Orleans; Lousiana/USA; Pap. no. B 25
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:absorption heat pump, direct fired, ammonia, controllable cycle, residential heating system
HGF - Research field:UNSPECIFIED
HGF - Program:other
HGF - Program Themes:E - no assignment
DLR - Research area:UNSPECIFIED
DLR - Program:E - no assignment
DLR - Research theme (Project):UNSPECIFIED
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Institut für Chemische Antriebe und Verfahrenstechnik
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 05:34

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