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Drain water heat recovery systems uses the heat of the waste water to preheat the fresh water. This is one of the few ways to reduce the energy needed to heat water without sacrificing comfort. For more on passive heat recovery from wastewater, see Passipedia
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名称	能效阶级	Nominal Efficiency	Dead Time	流量	压力损失	Drinking Water	废水	气候区	Location/Avaliability	数据认证
组件制造商
ES-Drain Herwin-Energie BV	phB	50%	5 s	8 l/min	0.17 bar	1/2"	DN 50	独立 \| 冷,温度	Netherlands (NL)	Mar 2018
Joulia Twinline 10P-830 LF joulia sa	phB	60%	5 s	8 l/min	0.26 bar	1/2"	DN 50	冷,温度	CH \| NL \| BE \| AT \| DE	Dec 2020
Joulia Inline 5P-630 joulia sa	phC	41%	5 s	8 l/min	0.28 bar	1/2"	DN 50	冷,温度	CH \| NL \| BE \| AT \| DE	Dec 2020
ZYPHO iZi 40 ZYPHO	phC	37%	5 s	8 l/min	0.27 bar	1/2" AG	DN 50	独立	PT \| AT \| AU \| BE \| BG \| BR \| CH \| CZ \| DE \| EE \| FR \| GB \| GR \| IE \| IT \| JP \| NL \| PL \| SI \| ZA	Jul 2020
ZYPHO PiPe DW65 ZYPHO	phA	64%	5 s	8 l/min	0.24 bar	1/2”AG 3/4”IG	DN 50	独立	PT \| AT \| AU \| BE \| BG \| BR \| CH \| CZ \| DE \| EE \| FR \| GB \| GR \| IE \| IT \| JP \| NL \| PL \| SI \| ZA	Sep 2021
Showersave QB1-12 Q-Blue B.V.	phB	57%	5 s	8 l/min	0.21 bar	1/2" IG	DN 50	独立	NL \| BE \| CZ \| DE \| DK \| FR \| GB \| SE \| SK	Feb 2017
Showersave QB1-16 Q-Blue B.V.	phA	64%	5 s	8 l/min	0.25 bar	1/2" IG	DN 50	独立	NL \| BE \| CZ \| DE \| DK \| FR \| GB \| SE \| SK	Feb 2017
Showersave QB1-21 Q-Blue B.V.	phA	69%	5 s	8 l/min	0.32 bar	1/2" IG	DN 50	独立	NL \| BE \| CZ \| DE \| DK \| FR \| GB \| SE	Feb 2017

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