TY - RPRT
T1 - Mixing during draw-off in small SDHW systems.
T2 - Proposal for maximum accetable mixing.
AU - Andersen, Elsa
AU - Furbo, Simon
PY - 1998
Y1 - 1998
N2 - The aim of the project is to determine a maximum acceptable mixing
rate during hot water tappings, so called draw-offs. Based on a
pervious proposal for a maximum acceptable decrease of thermal
performance due to mixing during draw-off, investigations are
carried out in order to determine the mixing rate corresponding to
the maximum acceptable decrease of thermal performance. However,
the thermal performance is depending on several different factors
such as solar collector area, hot water tank volume, daily hot
water consumption etc. Therefore the method first proposed is not
very suitable. Instead a different tank test is proposed. It is
proposed to use a draw-off test where the energy tapped, from a
uniform heated tank, from the start of the draw-off until the
volume of the domestic water in the solar tank has been tapped
must not be smaller than a certain percentage.
AB - The aim of the project is to determine a maximum acceptable mixing
rate during hot water tappings, so called draw-offs. Based on a
pervious proposal for a maximum acceptable decrease of thermal
performance due to mixing during draw-off, investigations are
carried out in order to determine the mixing rate corresponding to
the maximum acceptable decrease of thermal performance. However,
the thermal performance is depending on several different factors
such as solar collector area, hot water tank volume, daily hot
water consumption etc. Therefore the method first proposed is not
very suitable. Instead a different tank test is proposed. It is
proposed to use a draw-off test where the energy tapped, from a
uniform heated tank, from the start of the draw-off until the
volume of the domestic water in the solar tank has been tapped
must not be smaller than a certain percentage.
M3 - Report
BT - Mixing during draw-off in small SDHW systems.
ER -