Ses­sion 9

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            
10:00 am Wel­co­me
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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.

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

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. 

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
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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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