Complex ventilation monitoring

Ventive Ltd have designed a highly innovative heat recovery ventilation system.
http://www.ventive.co.uk/ventive-shortlisted-2014-ashden-awards/

To fully evaluate their product they commissioned us to do comprehensive fine grained monitoring for them for 20 installs.

Using the Energy Monitoring Company combined analogue and digital 12 channel data-logger and Titan sensors we get the data down to 1 minute readings that are uploaded to the Platform dashboard every three hours – so it’s pretty much live – as much as it needs to be because it’s not for a control system but for evaluation.

The parameters being monitoring by us are:

The supply air temperature to the heat exchanger
The post exchanger air flow temperature
Air flow velocity
Internal house temperature
External temperature
Internal humidity
External humidity
Internal CO₂

From these readings we can then calculate the:

Air Changes per Hour (ACH)
Volume Flow Rate (VFR)
Heat Transfer Efficiency (HTE)

We built a really cool interactive graphing program which allows clients to design their own graphs. They can choose to display data as lines, columns or areas in a colour of their choice. And data can be graphed over any timeframe – for example 10 minute chunks over the past 3 days, or hourly over the past 6 months. They can create and download as many bespoke graphs as they want. Click graphs to enlarge