VDI 4650 Blatt 2:2013-01
Current
The latest, up-to-date edition.
Simplified method for the calculation of the annual heating energy ratio and the annual gas utilisation efficiency of sorption heat pumps - Gas heat pumps for space heating and domestic hot water
Hardcopy , PDF
German - English
01-01-2013
Preliminary note
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, abbreviations, indices
5 Basis of calculation
6 Calculation of annual heating energy ratio
and annual gas utilization efficiency
7 Electrical power input in
standby mode
8 Uncertainties of measurement
9 Calculation examples
Annex A
Annex B - Simulation calculation for various heat pumps with
regard to length and return temperature profiles of
borehole heat exchangers
Annex C - Determination of evaporator inlet temperature
for heat pumps with solar collectors
Annex D - Overview tables of the tasks and activities of
manufacturers, testing laboratories and system
planners
Bibliography
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