Summary Several Heat Recovery Ventilation (HRV) systems available have HRV performance data for the Passive House Planning Package (PHPP) but do not have Energy Recovery Ventilation (ERV) performance data. Knowing the performance is important for designing Passive Houses. A simple scaling is suggested to provide a first approximation. Method Looking at the PHPP version 9.3 example file we can set …
Hygiene Criterion applied to a thermal bridge
PH certification criteria requires that a minimum surface temperature be achieved. Steps: 1. Determine the exterior temperature to use – call this the Hygiene External Temperature. This temperature can be any value lower than the internal temperature. I typically use 0 °C as the Hygiene External Temperature and 20 °C as the interior temperature but this is only a matter …
06 June 2018 Stuff Piers Fuller: A tenth of New Zealand houses not fit to live in, health researcher says
I met Dr Pierse at University of Otago’s Public Health Summer School on the day of the release of the World Health Organisation’s International Housing & Health Guidelines (25 February 2019). This was nearly the same day that the Healthy Homes Guarantees Act was released. The research that went into the WHO International Housing & Health Guidelines was incredible – …
14 February 2018 The Harvard Gazette’ Colleen Walsh: Your building might be making you sick. Joe Allen can help
“We watched how they made plans and decisions and accessed information relative to what was happening to see if they could be strategic in their thinking and we found really dramatic effects even from minor changes to the indoor environment,” Allen said. When developers build building they are focused on what they can rent them for; and they should be …
2016 August 1 Prefab NZ: Unipod Open Source Bathroom Pod
This is one way to save a considerable fraction of build costs if it is done at scale. Of course, I’d argue for putting those savings into a better building envelope designed/built to Certified Passive House levels. Content by Prefab NZ.