1 The instrument experts
2 The instrument experts
� Air permeability � Thermal imaging � Co-heating tests – Domestic � U-value evaluation – Domestic � Lighting levels � Wall moisture content � Tracer gas testing 3 The instrument experts
� Utilities – electricity / water / gas � Microgeneration technologies generating electrical energy and heating / cooling � MVHR technologies � Thermal comfort – internal and external conditions 4 The instrument experts
� Testing to include effect of leakage through the floor � Should include Should include smoke testing � Includes both � Includes both pressurisation and depressurisation depressurisation tests 5 The instrument experts
� 10 o C temperature difference for at difference for at least 4 hours. � Dry, no sun, wind D i d speed < 8m/s. � 320 x 240 pixels minimum infrared resolution. 6 The instrument experts
� Method for measuring heat loss from dwellings. � Measure electrical energy to maintain a constant internal maintain a constant internal temperature 25 o C, with a external temperature at least external temperature at least 10 o C below ( ∆ T). � Plot daily heat input vs ∆ T � Plot daily heat input vs ∆ T, slope of line = heat loss coefficient in W/K coefficient in W/K. 7 The instrument experts
� In-situ measurement of wall fabric U values by heat flux sensors � Testing often Testing often conducted with co- heating evaluation heating evaluation � Minimum of two sensors in each sensors in each element of the dwelling 8 The instrument experts
� Smart metering enables data to be captured data to be captured remotely. � 5 minute intervals (same 5 minute intervals (same as thermal comfort data). � Sub metering should be Sub metering should be considered. � Microgeneration needs to g monitor import as well as export + energy use. 9 The instrument experts
Th There are two key aspects of Mechanical Ventilation t k t f M h i l V til ti (with or without heat recovery) needs to be measured � Airflow (volumetric NOT air velocity) with filters clean � Airflow (volumetric NOT air velocity) with filters clean AND dirty. � Consumed electrical energy (including data when � Consumed electrical energy (including data when filters are clean AND dirty. 10 The instrument experts
� Similar equipment for both commercial and domestic properties. � Numerous supplies but few who offer a complete solution. � Sensors need to include internal + external S d t i l d i t l t l temperature / humidity, CO 2 , energy (pulse utility meters) heat flux (solar ground source heat pumps meters), heat flux (solar, ground source heat pumps, DHW systems), solar radiation (pyranometers), water and gas meters (pulse). g (p ) � Five minute logging intervals. � Should be calibrated to a specification. p 11 The instrument experts
� Wireless monitoring solution (Wi5). � Easy to install. � Transmitters have a long battery life (> 3 years). � Multiple sensor types. � Compact and unobtrusive. 12 The instrument experts
13 The instrument experts
14 The instrument experts
15 The instrument experts
16 The instrument experts
Internal tem/rh Internal tem/rh External temp/rh External temp/rh Internal CO2 Pyranometer Date/time %RH DegC %RH DegC ppm W/m2 12/10/2010 08:00 43.67 21.47 83.26 10.54 431 7.972 12/10/2010 08:05 43.99 21.4 82.74 10.65 458 8.406 12/10/2010 08:10 44.58 21.48 82.36 10.76 453 11.471 12/10/2010 08:15 45.97 21.82 82.18 10.87 616 13.039 12/10/2010 08:20 46.25 22.2 83.09 10.98 650 13.039 12/10/2010 08:25 12/10/2010 08:25 46.24 46.24 22.41 22.41 82.94 82.94 11.09 11.09 675 675 13.039 13.039 12/10/2010 08:30 46.14 22.62 81.8 11.1 732 13.039 12/10/2010 08:35 46.17 22.77 81.57 11.19 791 13.039 12/10/2010 08:40 46.34 22.8 82.89 11.12 835 13.039 12/10/2010 08 45 12/10/2010 08:45 46 4 46.4 22 95 22.95 81 36 81.36 11 25 11.25 850 850 13 039 13.039 12/10/2010 08:50 46.56 23.08 80.89 11.44 895 13.153 12/10/2010 08:55 46.69 23.19 81.43 11.5 940 15.298 12/10/2010 09:00 46.79 23.2 81.81 11.55 970 17.436 12/10/2010 09:05 46.7 23.3 80.57 11.66 1002 17.671 17 The instrument experts
� Ultimately monitoring is about measuring actual performance against the design performance. � Monitoring is easy with the correct instrumentation package ! � Adverse findings need acting on to reduce CO 2 emissions. i i 18 The instrument experts
alan.gilbert@bsria.co.uk l ilb t@b i k 19 The instrument experts
Recommend
More recommend
