Passivhaus: creating a roadmap to net zero carbon

One aspect of the project was to maximise the use of DfMA and set a new benchmark for public sector adoption.

External heat rejection options:.Chilled water systems are compatible with a range of external heat rejection options, including dry cooling, dry cooling with partial evaporative assist, and full adiabatic cooling.

This allows for optimisation based on climate and environmental considerations.. A key factor in maximising the heat rejection system (with chilled water) efficiency is minimising the heat rejection unit approach temperature i.e.the difference between the external air temperature and the chilled water outlet temperature.Every degree closer results in mechanical cooling being eliminated for potentially hundreds of hours, leading to significant energy savings.

In hot, dry climates, using adiabatic cooling which cools towards the wet bulb temperature which is often much lower than the dry bulb temperature, can further reduce the number of hours of mechanical cooling required.The balance between reducing energy / water consumption as part of the design is investigated as part of each project design.. Water usage.

A growing challenge for data centre providers is water availability.

Data centres utilising evaporative cooling systems need a consistent water supply for process cooling and obtaining this can be increasingly difficult in some regions.In a budget-conscious industry, every hour counts, so assembly is planned to be as quick as possible, and disassembly is just as quick.

It would be even quicker if the tent was pre-erected, of course, but this doesn’t make sense from a transportation and logistics perspective.Instead, they use a component kit-of-parts that is easily handled and takes up very little space during transportation.

A permanent building may have different drivers, but lessons can still be learned from highly efficient on-site works such as the circus tent.. One aim of a fully considered DfMA strategy is to enable smooth running of the construction site.To create a well-orchestrated assembly line with productive workers carrying out pre-determined, standardised and well-understood tasks in predictable timeframes..