Ventilation systems with heat and moisture recovery
Extremely economical and quiet, yet large power reserves to have the best indoor air quality even at a large party. Is of course part of the basic equipment.
For 3 decades I have observed that ventilation systems with heat recovery almost do not spread because of absurdly high prices. Here I explain why a ventilation system, which every ventilation engineer would call “The mother of oversizing”, is the most economical solution and belongs to the basic equipment of a “GEMINI next Generation” house.
| 00:00 | Start
| | 00:14 | AustoBau Salzburg and Wels energy saving fair first seen in 1992
| | 00:59 | Absurd surcharge for comfort ventilation at prefab house manufacturer
| | 02:06 | Residential 30-year loan calculator
| | 02:49 | Would such an upcharge list be conceivable when buying a car?
| | 03:43 | Effect of pipe diameter on electricity consumption
| | 05:14 | Air exchange and efficiency diagram
| | 06:29 | Assumed efficiencies at 100 m³/h
| | 07:12 | Sunny dry cold -5° 20% outside - 18° 40% inside with 70 m³/h
| | 09:00 | Cloudy humid 2° 80% outside - 18° 40% inside with 70 m³/h
| | 10:14 | Sunny dry cold -5° 20% outside - 22° 50% inside with 100 m³/h
| | 11:28 | Cloudy humid 2° 80% outside - 22° 50% inside with 100 m³/h
| | 11:41 | Sunny dry cold -5° 20% outside - 25° 50% inside with 100 m³/h
| | 13:29 | Cloudy humid 2° 80% outside - 25° 50% inside with 100 m³/h
| | 13:46 | CO2 chart for 2 people, 165 m³, 0, 20, 50, 100, 200, 500 m³/h
| | 15:21 | CO2 diagram for 6 people
| | 15:36 | CO2 diagram for 16 people
| | 16:37 | Remove cover, behind it connections power and RS485 Modbus
| | 16:57 | USB to RS485 adapter for connection to smart home computer
| | 17:48 | Blower door test common for passive houses
| | 18:24 | Ventilation system in normal operation
| | 18:40 | Ventilation system as Blower door Test: much pressure difference, the house is tight
| | 18:56 | Very little pressure difference only: the house is leaking
| | 19:13 | Unwanted air exchange through leaks
| | 19:52 | Air risk defense mode: in case of nuclear accident and radioactive cloud
| | 21:28 | Behind the service door
| | 22:55 | End
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Music: Andy Mangele |
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Historical development and current statements
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This subdomain GEMINIs.pege.org and the subdomain
Invests.pege.org shows the historical development of the project.
GEMINI-next-Generation.house shows current statements of GEMINI next Generation AG.
*, Rethinking cities, *, Rethinking energy transition, Summer/Winter, Energy Social Food transition, , Material test, 100% solar?, Heat pump, Disruption, Optic,
| The heat pumps have arrived
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On December 16, 2020 paid, on January 27 the ship arrived in the Slovenian port of Koper. On February 19, the 3 heat pumps could be picked up at a forwarding agency near Salzburg.
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| Rethinking cities
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The Green parliamentary group in the German Bundestag is hosting the online conference “Rethinking Cities” on March 19, 2021. We are participating in the virtual exhibition.
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| The LiFePo4 batteries have arrived
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Ordered in mid-December, arrived on March 19. Low costs for electricity storage are a decisive factor for a real energy transition.
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| Rethinking the energy transition: The price lie
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The demand for “more money for climate protection” is based on the price lie. But we need more motivation, credit and opportunity for a real effective energy transition.
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| Summer / winter balancing of solar power — seasonal storage
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Different approaches to summer/winter balancing compared. Seven different locations, from Oslo to Cairo, are examined for seasonal balancing.
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| Energy change — Food change — Social change
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Everyone is only talking about the energy transition for climate protection, but we also need a change in food production and in the social sphere. A solution for all 3 changes.
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| Ventilation system with heat and moisture recovery
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On May 13, the last of the ordered units is ready for pickup at a forwarding company. The trip was nearly for nothing, because the device only barely fit through the tailgate.
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| DIY test of thermal insulation of an alternative building material
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Construction wood prices are rising dramatically spring 2021 and there are supply problems. But wood prices for other applications, such as this material, are falling slightly.
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| Would Germany be possible with 100% solar electricity?
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The expansion of wind energy is faltering. Is wind energy really indispensable for the energy transition or would it even work with exclusively 100% solar power?
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| More efficiency in heating, cooling and hot water by 3 new patents
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How can you achieve a higher COP with an air-source heat pump than with a ground-source heat pump, and how can you drastically reduce the amount of electricity needed to heat water?
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| Disruption at houses
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The market for homes is in as horrifying a state as the electric car market was in 2003: in the year Tesla was founded, the Peugeot 106 was a top electric car.
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| A visual misunderstanding,
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or how a house shrank to 2/3 of its size. Because of this visual misunderstanding, the video “Disruption in Houses” was published again with improved graphics.
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