Session 9: Ventilation and heating
Tuesday, 14 September 2021
The use of a heat pump can be a central building block for the successful operation of a passive house. In light of the increasing attractiveness of photovoltaic electricity, this electrically powered system for generating the required heating energy and hot water production offers an attractive opportunity to use a larger share of the self-generated electricity. Improvements of all kinds in this field in the area of ventilation planning, as well as advice and experience reports on the planning and implementation of corresponding projects, will be presented in detail by the speakers.
Time (CEST) | Topic | Speaker |
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10:00 am | Welcome | Micheel Wassouf |
10:05 am |
Ventilation systems combined with heat pump for heating, cooling and domestic hot water Highly efficient ventilation with heat & humidity recovery is mandatory in PH buildings. Ventilation systems combined with a heat pump for heating and cooling & dehumidification are the consequent further development of the classic 'compact unit' for Passive Houses, which are a well adopted solution for apartments in multi-family buildings, too.
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Berthold Kaufmann | Passivhaus Institut |
10:20 am |
Landmines & Red Flags: How to avoid these when designing VRF space conditioning systems |
Lois Arena | Steven Winter Associates, Inc Kimberley Llewellyn | MITSUBISHI ELECTRIC TRANE HVAC US LLC |
10:35 am |
The application of ambient loop district heating in multi-residential Passive Houses This paper discusses the potential of 5th Generation ambient loop design in low energy Passivhaus design. We shall discuss systems and their advantages and disadvantages over traditional 4th Generation heating technologies.
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Hannah Jones | Greengauge |
10:50 am | Question and Answer | |
11:10 am |
Isolation Environments: How Passive House = Passive Health By re-thinking the way healthcare facilities are designed better care can be provided to occupants, energy and ventilation systems can be used more efficiently and human, as well as capital, cost is saved in the long term. The Passive House standard can respond to COVID-19 while not ignoring climate change as it allows for holistic building design. |
Esther van Eeden | Kearns Mancini Architects Jonathan Kearns | Kearns Mancini Architects |
11:25 am |
Experience of air to water heat pumps for single family Passivhaus dwellings Monitored energy use of air to water heat pumps in single Passivhaus dwellings is compared with the design estimates using PHPP. Heat pumps using conventional HFC refrigerants are compared with CO2 refrigerant. The latter gave improved performance for hot water heating but significantly worse for space heating. This is due to the very low heat load of Passivhaus dwellings being below the normal output range of available heat pumps. |
Alan Clarke | Alan Clarke |
11:40 am |
Development of a modular heat pump with compact and silent façade-integrated outdoor unit A mini-split heat pump with façade-integrated outdoor unit was developed thanks to CFD simulations and laboratory measurements. The first test of a functional model of the heat pump proved promising, but an issue related to a leaky four-way valve must be solved to further increase the performance. |
William Monteleone | University of Innsbruck, Unit for Energy Efficient Building |
11:55 am | Question and Answer | |
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Go to Session 8
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