Installation manual

8
Heat source system
System for the extraction of heat from a heat source and the
conveyance of the heat transfer medium between the heat
source and the heat pump including all auxiliary equipment.
Heat transfer medium
Liquid or gaseous medium (e.g. water, brine or air) with which
heat is conveyed.
Panel heating
Panel heating has water flowing through it and functions like a
large radiator. It has the same advantages as underfloor heating.
As a rule, a temperature of 25 °C to 28 °C is sufficient for the
heat transfer which is mainly supplied to the rooms in the form of
radiant heat.
Bibliography
RWE Energie Bau-Handbuch (12. Ausgabe), VWEW VLG U.
Wirtschaftsgesellschaft, ISBN 3-87200-700-9, Frankfurt 1998
Dubbel Taschenbuch für den Maschinenbau (20. Auflage),
SPRINGER VERLAG GMBH & CO KG, ISBN 3540677771,
Berlin 2001
Breidert, Hans-Joachim; Schittenhelm, Dietmar: Formeln,
Tabellen und Diagramme für die Kälteanlagentechnik A.
MUELLER JUR.VLG.C.F., ISBN 3788076496, Heidelberg 1999
DIN Deutsches Institut für Normung e.V., Beuth Verlag GmbH,
Berlin.
VDI-Richtlinien – Gesellschaft technische Gebäudeausrüstung,
Beuth Verlag GmbH, Berlin.
Symbols
Greek alphabet
Size Symbol Unit Additional units (definition)
Mass Mkg
Density ρ
kg/m
3
Time t
s
h
1 h = 3,600 s
Volume flow
m
3
/s
Mass flow kg/s
Force F N
1 N = 1 kg m/s
2
Pressure p
N/m
2
; Pa
1 Pa = 1 N/m
2
1 bar = 10
5
Pa
Energy, work, heat (quantity) E, Q
A
kWh
1 J = 1 Nm = 1 Ws = 1 kg m
2
/s
2
1 kWh = 3600 kJ = 3.6 MJ
Enthalpy HA
(Heat) output
Heat flow
P,
W
kW
1 W = 1 J/s = 1 Nm/s
Temperature T
K
°C
Absolute temperature, temperature difference
Temperature in °Celsius
Sound power
Sound pressure
L
WA
L
PA
dB(re 1pW)
dB(re 20μPa)
Sound pressure level, sound power level
Efficiency η -
COP, coefficient of performance ε (COP) - Output figures
Performance factor ß For example, annual performance factor
Specific heat content c J/(kg K)
9
0
4
α Α alpha ι Ι iota ρ Ρ rho
β Β beta κ Κ kappa σ Σ sigma
γ Γ gamma λ Χ lambda τ Τ tau
δ Δ delta μ Μ mu υ Υ ypsilon
ε Ε epsilon ν Ν nu ϕ Α phi
ζ Ζ zeta ξ Ξ xi χ Χ chi
η Η eta ο Ε omicron ψ Ψ psi
Α θ theta π Π pi ω Ω omega