MHVR - Mechanical Ventilation & Heat Recovery

ECOJOIST and MHVR - Mechanical Ventilation & Heat Recovery

THE ECOHOME

The first area of change is considered around the whole house Mechanical Ventilation with Heat Recovery (MVHR). This can be used for properties built or refurbished to current Building Regulations Part F and L standards where air permeability can be down to 3 to 4 m3/h at 50pa pressure difference.

Everyone of us exhales 10 to 75 litres of CO2 per hour and up to 175 grams of water per hour. A family of four produces 10-15 litres of water vapour a day through breathing, washing, showering and cooking.

This system (click on picture for a larger picture) extracts warm moist air via ducts to the wet rooms and passes this air through a heat recovery cell before it is discharged outsitde. At the same time fresh air from outside is drawn through the cell where it is warmed and distributed to the living rooms and bedrooms.

Whole house systems can prove very effective at reducing the heat load in energy efficient homes since they recover heat which would have been vented outside and therefore lost. Single room systems are proving an increasingly popular choice for small scale renovation projects.

The introduction of additional mechanical and venitlation equipment within domestic homes creates one question: how are the service runs designed into existing house designs without going back to the drawing board?

The answer is by incorporating Ecojoist from Minera Roof Trusses. By using the metal open web floor joist system, clear passage lines of service runs are automatically created without having to consider span directions and general layout of joist zones.

The Ecojoist open web system is successfully used in all forms of construction, whether domestic, commercial or retail in the floor or in the roof as the benefits of overall build time surpasses all other systems when taking into account the follow-on trades.

Minera Roof Trusses is supplying solutions for construction that provides not only benefits during the build process but added value to the end user. In years to come when modifications are required, the designs integrated with the Ecojoist metal floor web solution from Minera will assist in further enforced energy efficient compliances due to the ease of open service zones which would negate expensive and time consuming structural changes to the building.