Passipedia EN

User Tools

Site Tools

You are here: Passipedia - The Passive House Resource » Planning and Construction » Building Services » Compact HVAC systems
planning:building_services:compact_hvac_systems

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
Next revisionBoth sides next revision
planning:building_services:compact_hvac_systems [2017/12/13 17:46] – [Concept 3: Heating using biomass: the compact pellet stove unit] kdreimaneplanning:building_services:compact_hvac_systems [2018/07/02 09:48] – [Concept 2: Air heating – using the residual heat from the exhaust air: the compact heat pump unit] cblagojevic
Line 1: Line 1:
 ====== Compact HVAC systems ====== ====== Compact HVAC systems ======
  
-[[planning:building services:compact HVAC systems:Certification and primary energy balance calculations for compact heat pumps]]+[[planning:building services:compact HVAC systems:Certification and primary energy balance calculations for compact heat pumps]]  {{:picopen:members_only.png?25|}}
  
 ===== Concept 1: Air heating  - using the fresh air necessary for hygiene ===== ===== Concept 1: Air heating  - using the fresh air necessary for hygiene =====
Line 18: Line 18:
   * ** by using a small condensing boiler (compact condensing unit)**   * ** by using a small condensing boiler (compact condensing unit)**
   * ** by using a small heat generator based on biomass fuel e.g. straw-pellets**\\   * ** by using a small heat generator based on biomass fuel e.g. straw-pellets**\\
-\\+ 
 +---- 
 ===== Concept 2: Air heating – using the residual heat from the exhaust air: the compact heat pump unit ===== ===== Concept 2: Air heating – using the residual heat from the exhaust air: the compact heat pump unit =====
-[{{ :picopen:compact_unit_passive_house.png?400|**The "classical" compact heat pump unit combines heating, ventilation and hot water generation in one easy to handle unit; everything revolves around air: it acts as the transporting medium for the heating and at the same time serves as the source of heat (on the exhaust air side) for the heat pump. An [[Planning:Calculating energy efficiency|Energy balance]] can show whether such a compact unit is adequate for heating a building.**}}] +[{{ :picopen:compact_unit_passive_house.png?350|**The "classical" compact heat pump unit combines heating, ventilation and hot water generation in one easy to handle unit; everything revolves around air: it acts as the transporting medium for the heating and at the same time serves as the source of heat (on the exhaust air side) for the heat pump. An [[Planning:Calculating energy efficiency|Energy balance]] can show whether such a compact unit is adequate for heating a building.**}}] 
-The amount of residual heat in the exhaust air of a home ventilation unit, also known as “enthalpy”, isn't particularly high, and condensing moisture contained in the air accounts for a large part of it. However, in a Passive House, the heat requirement is so small, that it can be covered almost completely by this residual exhaust air enthalpy. This concept was first published in 1995 by Wolfgang Feist. This facilitated the use of the [[planning:building services:compact HVAC systems:Certification and primary energy balance calculations for compact heat pumps|Compact heat pump unit]] in Passive Houses.+The amount of residual heat in the exhaust air of a home ventilation unit, also known as “enthalpy”, isn't particularly high, and condensing moisture contained in the air accounts for a large part of it. However, in a Passive House, the heat requirement is so small, that it can be covered almost completely by this residual exhaust air enthalpy. This concept was first published in 1995 by Wolfgang Feist. This facilitated the use of the [[planning:building services:compact HVAC systems:Certification and primary energy balance calculations for compact heat pumps|Compact heat pump unit]]  {{:picopen:members_only.png?20|}} in Passive Houses.
   
 Today, an increasing number of manufacturers offer such compact ventilation units. These units are highly efficient, as proven by scientifically evaluated measurements in Passive House housing developments.\\ Today, an increasing number of manufacturers offer such compact ventilation units. These units are highly efficient, as proven by scientifically evaluated measurements in Passive House housing developments.\\
Line 30: Line 32:
  
 ===== Concept 3: Heating using biomass: the compact pellet stove unit ===== ===== Concept 3: Heating using biomass: the compact pellet stove unit =====
 +[{{ :picopen:fireplace_in_passive_house.jpg?200|**Pellet-stove, the main heating system in a Passive House in Friedberg, Germany (Architect: Blumrich); the fully automatic stove also provides hot water; in the summer, solar collectors round off the concept: the stove doesn’t have to be heated then.**}}]
 Of course, not only Passive Houses can be heated using biomass. However, the available potential of sustainably-produced fuel is limited. In case of poor efficiency, only a fraction of the buildings in Europe (and also worldwide) can be sustainably supplied with biomass. However, if the level of efficiency is high enough, as it is in the Passive House for example, then the amount of fuel provided by sustainable agriculture and forestry is sufficient to cover a considerable share of the energy demand. Of course, not only Passive Houses can be heated using biomass. However, the available potential of sustainably-produced fuel is limited. In case of poor efficiency, only a fraction of the buildings in Europe (and also worldwide) can be sustainably supplied with biomass. However, if the level of efficiency is high enough, as it is in the Passive House for example, then the amount of fuel provided by sustainable agriculture and forestry is sufficient to cover a considerable share of the energy demand.
  
Line 38: Line 40:
  
 There are already some Passive Houses in which heat is mainly generated by using a standard wood-pellet stove ([[http://www.passivhausprojekte.de/projekte.php?lang=en&detail=185&keyword=Blumrich|Passive Houses Friedberg]]).\\ There are already some Passive Houses in which heat is mainly generated by using a standard wood-pellet stove ([[http://www.passivhausprojekte.de/projekte.php?lang=en&detail=185&keyword=Blumrich|Passive Houses Friedberg]]).\\
-\\ + 
-[{{ :picopen:fireplace_in_passive_house.jpg?200|**Pellet-stove, the main heating system in a Passive House in Friedberg, Germany (Architect: Blumrich); the fully automatic stove also provides hot water; in the summer, solar collectors round off the concept: the stove doesn’t have to be heated then.**}}] +---- 
-\\+
  
 ===== Concept 4: Heating using a condensing boiler: gas-based compact unit ===== ===== Concept 4: Heating using a condensing boiler: gas-based compact unit =====
Line 58: Line 60:
 [[planning:building services:compact HVAC systems:Certification and primary energy balance calculations for compact heat pumps|Compact heat pump unit]] \\  [[planning:building services:compact HVAC systems:Certification and primary energy balance calculations for compact heat pumps|Compact heat pump unit]] \\ 
  
-[[Planning:building_services:heating_and_dhw:heating:Biomass heating in Passive Houses]] +[[Planning:building_services:heating_and_dhw:heating:Biomass heating in Passive Houses]]  {{:picopen:members_only.png?25|}} 
  
 +[[https://database.passivehouse.com/en/components/ | Passive House Component Database]]
planning/building_services/compact_hvac_systems.txt · Last modified: 2020/08/10 08:04 by alang