Our mechanical first fix is practically complete so it’s a good time to look at our MVHR system.
When spec’ing our first self-build in the late 1990’s we added this Drimaster PIV unit (Positive Input Ventilation).
This sent a low pressure feed from a vent in our hall ceiling, driving moist air out of the house and doing away with the requirement for trickle vents on all our windows and extractor fans in the wet rooms. Although it worked well, the down side was that as it pushed out our warm heated air, it drew in cold air from outside to replace it.
We knew we wanted a much more efficient system in the new house and so we looked around for a company with knowledge in low energy heating. We were lucky to find an expert best on our doorstep and back in February of 2017 we had our first meeting with Daly Renewables.
Daly’s describe themselves as “an engineer-led company committed to developing low energy efficient renewable energy systems”. We liked the fact that they are, as they put it, “a single point Responsibility”. We weren’t talking to a sales team either, but the engineer that would be developing our system.
An MVHR is effective in homes with an airtightness rating of around a 5 or lower but what exactly is it? Over til Ryan for meget mere af en forklaring …
[UPDATE – here are the figures for our first years running cost]
Gammeldags
The minimum form of ventilation currently required to satisfy building control is a combination of trickle vents and extract fans. A trickle vent is the most basic form of ventilation and consists of a slot opening in a window which can be manually opened and closed to let fresh air straight in from outside. This is uncontrollable and the problem with these occur during a cold windy night when you get a cold draught from the vent entering the room, which affects the comfort of the occupants. combined with extract fans in bathrooms, it begs the question – why insulate your home so well and leave what are efficiently holes in your walls and windows?
When we tighten a house to decrease energy consumption, we also risk making the building envelope susceptible to moisture problems, including mould (a major health issue) and rot. Excess indoor humidity can also increase dust mites and other allergens, damage electronic equipment and accelerate the outgassing of formaldehyde from common building materials and furnishings. If the house is in an area prone to ground radon, then radon accumulations can also increase in a tight house that is not correctly ventilated (though separate radon mitigation is much more effective at decreasing this risk). A tight enclosure with mechanical ventilation will practically always offer better indoor air quality with lower energy bills and much more comfort than a leaky house depending on the house to “breathe”. houses don’t breathe – people breathe and they do it 24/7 year around. An essential aspect of thermal comfort is humidity levels and directly related air quality.
Quite simply put- the better insulated and sealed a house is, the much more essential a controlled form of ventilation becomes.
Ryan Daly
A better Way
The many efficient and effective type of ventilation is mechanical ventilation with heat recovery. In this system a pre-calculated flow of air is extracted from wet rooms, removing moisture, odours and VOC (found in paints, adhesives etc).
A supply of air is accurately placed into habitable rooms, ie each and every bedroom and living areas. A high efficiency heat exchanger recovers up to 90% of the heat energy in the extracted air into the incoming filtered fresh air.
We have fitted this Vent-Axia Sentinel Kinetic High flow unit into the new Automated Home. once it’s setup it requires little or no adjustment with an automatic summer bypass and a built-in humidity sensor that boosts the fan speed when it detects an increase in moisture (for example when taking a shower).
To it we have connected the Hybalans Ducting System and this routes the supply, as well as the discharge of ventilating air with the highest possible energy saving and maximum convenience.
Early planning is really beneficial here, so ensuring your Architect, Mechanical expert and Builder all know the site for the MVHR and the routes your ducting will take.
It consists of 2 manifolds, 1 for supply and 1 for Extract. The ducting is 92mm Semi rigid Plastic which runs to each individual room. The main advantage of this system is that it is very easy to balance, especially compared to a conventional teed off system which can be very hard to get the air flows appropriate on. The air quantities per air valve are simply centrally adjusted in the air distribution boxes. adjustment of the air valves is unnecessary.
På grund af tab med lav modstand, arbejdet
point and fan motor rpm of the HRV unit are reduced. This creates an extra
Reduktion af systemstøj.
We thoVælg groft MHRV -enheden for at garantere, at systemets driftskapacitet er i eller omkring 50%, eller mindre, hvor det er muligt.
Til
Flere år har vi installeret HRV i et forbedrende antal hjem,
med dette system med flere fordele i forhold til andre:
Negerer behovet for trickle -ventilationsåbninger og ekstraktionsventilatorer.
Systemstørrelse til at tilbyde 0,75 ACH (luftændringer i timen).
Dobbelt flået stålenhed med 25 mm isolering omkring-ultra stille i drift.
Modstrømsvarmeveksler – op til 90% varmegenvinding.
Hybalaner radiale kanalsystem udviklet til at negere krydstale mellem tilstødende værelser.
Automatisk sommerbypass.
Energibesparende EC -fans (elektronisk pendlingsteknologi).
Controller burde tilbyde justering i realtid til ventilatorhastigheder, krævet lufttemperatur og en før programmerbar stigningsfacilitet.
Automatisk stigning på enheden med indbygget fugtighedsføler.
Læs videre…
Læs nu om vores varmepumpe, og husk at tjekke vores Instagram for at følge projektet, læse resten af de automatiserede Home 2.0-blogmeddelelser og finde linkene til alle de produkter, vi har brugt i vores selvbygning.
dalyRenewables.com: Lyt til denne podcast på MVHR -design
Bestseller nr. 1
Fantronix FTX MVHR D105-A Heat Recovery Ventilationsenhed Varmveksler til lavt energiforbrug Nedsat kondensationsformer Kontrol Forbedret luftkvalitet
Plug and play: Selvstændigt stik og afspil MVHR Slimline varmeudvindingsventilationsenhed med indbygget frostbeskyttelse Let at bruge vægmonteret hastighedskontrol udviklet og fremstillet af Fantronix, fås i et komplet sæt til indenlandske og kommercielle installationer til 2-10 værelser, Eller bare enheden kan købes på egen hånd. Installer let med vores kit, der inkluderer alt, hvad der kræves til en fuld installation, inklusive ventilationsåbninger, gitter og kanal
Ultra Compact & Let at bruge: Specielt udviklet til brug i små ejendomme som studiolejligheder, kontorer, toiletter, hvor der er mindre luftstrøm og plads er begrænset. Leverer kontinuerligt ren, frisk, filtreret luft, mens du samtidig udvinder forurenende stoffer, så dit miljø er renere og helt fri for skadelige pollens og støv. Fjerner tilstedeværelsen af kondens, der bekæmper tilstedeværelsen af skadelig fugtig, råd og forme i våde områder.
Nedsat støjniveauer: Forsyning og uddrag af varmegenvinding Airstrøm satser op til 29 l/s (106 m3/time). Akustisk isoleret, lydabsorberende dobbelthudede enheder faldende samlede lydstøjniveauer ned til 24 dBA. Beskyt miljøet, mens vi sparer penge med vores professionelt evaluerede og lavenergiforbrugende varmevekslerenhed, der fungerer roligt ved hjælp af ultra-lav spænding.
£ 319.10
Køb på Amazon
Bestseller nr. 2
2 anmeldelser
VARME REGNING UNIT Vægmonteret stille decentraliseret toilet køkken toilet våde værelse D -MVHR Ventilator Smart Wifi Control – Hvid
£ 364,80
Køb på Amazon
Bestseller nr. 3
Nuaire MRXBox95-Wh2 2x Udskiftning MVHR Air Filters Pack G3 G4 M5 (MRXBox-Eco4) (M5 (Pollen + Allergies))
£ 24.99
Køb på Amazon
Bestseller nr. 4
1 anmeldelser
Blauberg Heat Recovery Unit Wall Montered Silent Decentralized Office Toil Room Kitchen Toilet Room D-MVHR Ventilator Smart Wifi Control-White (White)
Silent kontinuerlig varmegenvinding med manuel eller automatisk kontrol af fugtighed, tid, luftstrøm og ventilationshastighed.
Kontrol fra din smartphone, hjemmeautomatiseringssystem eller tablet, Alexa, Echo osv.
Enheder er forbundet med WiFi til andre enheder for at tilbyde en hel hus MVHR -løsning.
£ 384,00
Køb på Amazon
Bestseller nr. 5
Envirovent Energisava 200 & 250 2x Udskiftning MVHR G3 G4 M5 Air Filters (G4(Præmie))
£ 16.99
Køb på Amazon
Del dette:
Facebook
Twitter
Reddit
LinkedIn
Pinterest14
E -mail
Mere
Whatsapp
Print
Skype
Tumblr
Telegram
Lomme
Sidste opdatering om 2021-10-04 / tilknyttede links / billeder fra Amazon Product Advertising API