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--- certification:passive_house_categories:classic-plus-premium [2015/03/18 16:59] – [Office complex for the Erdinger Moos wastewater association, architects: Architekturwerkstatt Vallentin] bwuensch
+++ certification:passive_house_categories:classic-plus-premium [2021/01/18 14:09] – jgrovesmith
@@ Line 5: / Line 5: @@
   * The **Passive House Classic**, which is the traditional Passive House
-  * The **Passive House Plus**, in which additional energy is generated, such as from photovoltaics. Such buildings are said to produce about as much energy as residents consume, at least in an – admittedly somewhat misleading – net calculation over the year.
+  * The **Passive House Plus**, in which additional energy is generated, such as from photovoltaics. In the case of single family and buildings with few stories, such buildings produce about as much energy as residents consume, at least in an – admittedly somewhat misleading – annual net-zero energy balance.
-  * In a **Passive House Premium**, far more energy is produced than needed. It is therefore a goal for the particularly ambitious: building owners and designers who want to go beyond what economic and ecological considerations already propose. The Passive House Institute is working to make the Passive House Standard more attractive for this avant-garde.
+  * In a **Passive House Premium**, typically far more energy is produced than needed. It is therefore a goal for the particularly ambitious: building owners and designers who want to go beyond what economic and ecological considerations already propose. The Passive House Institute is working to make the Passive House Standard more attractive for this avant-garde.
 This paper illustrates these classes based on specific reference projects and shows how you can take your project to the next level.
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 If a small solar thermal array for hot water supply with six square meters of collector area is added, PER demand drops to 47 kWh/(m²TFA*a), while energy generation increases to 65 kWh/(m²ground*a) (1a). In terms of energy generation, the level of Passive House Plus is reached, and we are not far away in terms of demand either. In this variant, the building already generates slightly more final energy than it consumes. If the collector area triples to 18 square meters, however, PER demand drops even further to 43 kWh/(m²TFA*a), which fulfills Passive House Plus. However, the effects are minor (especially in the light of the high cost of three times more collector area) because the additional energy produced in the summer cannot be completely used; the hot water tank (now 2,000 liters) will be fully loaded (1b).
-[{{:picopen:passivhaus-klassen_gerstetten.jpg?800|Figure 2: Gerstetten single-family home: classifications depend on building components used. \\ © Passive House Institute. Photo: Werner Friedl. }}]
+[{{:picopen:passivhaus-klassen_gerstetten.jpg?700|Figure 2: Gerstetten single-family home: classifications depend on building components used. \\ © Passive House Institute. Photo: Werner Friedl. }}]
 ==== Passive House Plus with a solar thermal array and heat recovery from shower water ====
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 In the basic variant (variant 1), the day care center (Figure 3) has a gas condensation boiler for both space heating and hot tap water. The facility does not generate any renewable energy. The building has an annual heating energy demand of 15 kWh/(m²a). Renewable primary energy demand comes in at 84 kWh/(m²a); in other words, the upper limit for renewable primary energy of 60 kWh/(m²a) is exceeded.
-[{{:picopen:passivhaus-klassen_traunstein.jpg?800|Figure 3: The Traunstein day care center: PER classifications depending on building components used.\\ © Passive House Institute. Photo: Architekturwerkstatt Vallentin. }}]
+[{{:picopen:passivhaus-klassen_traunstein.jpg?700|Figure 3: The Traunstein day care center: PER classifications depending on building components used.\\ © Passive House Institute. Photo: Architekturwerkstatt Vallentin. }}]
 ==== Central hot water supply systems not a good option when little hot tap water is used ====
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 ===== Office complex for the Erdinger Moos wastewater association, architects: Architekturwerkstatt Vallentin =====
-A cogeneration unit next to the building produces electricity and heat with gas from the water purification process (Figure 4). The heat is exported to a district heat network for use in space heating and hot water. The cogeneration share of heat is estimated at 94 percent. The lines are very short, so losses are low. The biogas from purification has an PER factor of 1.1, but only within the biomass budget of 20 kWh/(m²a) PER. Within that budget, the PER factor is 0.53, which results in an efficiency factor of the grid of 85% and a cogeneration share of 94% (with 46% electricity and 44% heat). Then, the biogas is considered to have a PER of 1.75, and the factor worsens to 0.93. Although the hot water distribution system is relatively inefficient, the initial PER demand is 44.3 kWh/(m²a). With the 247 square meters of PV covering 35 % of the roof, the Passive House Plus level is reached.
+A cogeneration unit next to the building produces electricity and heat with gas from the water purification process (Figure 4). The heat is exported to a district heat network for use in space heating and hot water. The cogeneration share of heat is estimated at 94 percent. The lines are very short, so losses are low. The biogas from purification has an PER factor of 1.1, but only within the biomass budget of 20 kWh/(m²a) PER. Within that budget, the PER factor is 0.53, which results in an efficiency factor of the grid of 85% and a cogeneration share of 94% (with 46% electricity and 44% heat). Then, the biogas is considered to have a PER of 1.75, and the factor worsens to 0.93. Although the hot water distribution system is relatively inefficient, the initial PER demand is 44.3 kWh/(m²a). With the 247 square meters of PV covering 35% of the roof, the Passive House Plus level is reached.
 [{{:picopen:passivhaus-klassen_erdinger_moos.jpg?700|Figure 4: Erdinger Moos office complex: PER classifications depending on building components used.\\ © Passive House Institute. Photo: Architekturwerkstatt Vallentin. }}]