## 4 MUA Monitoring  
As indicated above, the MUA was monitored during the complete cycle of the year 2014, with more than 30 sensors of surface temperature, indoor and outdoor air temperature, relative humidity, pyranometer, indoor air velocity, etc. The monitoring system was designed to be wireless. The surface temperature sensors are connected to small analysers, model \"EL-WiFi-TC-Thermocouple Probe Data logger\". Other types of \"EL-Wifi-TH Temperature and Humidity Data Logger\" analysers, with built-in indoor air temperature and relative humidity sensors, interpret the recorded data [22] and send wifi signals to a \"RouterOS\" model router. That router is connected to a laptop computer (Figure 7). By installing the \"EasyLog Wifisoftware\", the data sent by the analysers is received and stored on the computer. The data is sent daily to a virtual disk and using a personal code, the information can be accessed from any network point. In addition, a small station was installed on the roof of the building with sensors of outside air temperature, relative humidity and a pyranometer (Kipp Model CMP3 Pyranometer Iso Second Class) to measure solar radiation. To adjust the simulation parameters to the actual data, or to calibrate the model, we used the climate file obtained on site and validated using the climatological data recorded by the weather station of the climatological Laboratory of the University of Alicante. We also modified the value of air infiltration through the enclosures, using the Design Builder simulation tool, to adjust the annual energy demand obtained according to real energy consumptions provided by the Vice-Rectorate of the Campus and Technology of the University of Alicante. Average energy consumption over the 2010-2014 period  
Figure 7: Wireless monitoring system. Reception of the router and data processing laptop. was 203,050 kWh/year. Once the lighting consumption value was discounted--2.8 kWh/m\({}^{2}\)y--the value of 197.5 MWh/y was obtained for the existing all-air conditioning system. The same methodology was followed to adjust indoor surface temperatures and indoor air temperature. Fixing the set temperature at 21 \({}^{\circ}\)C in winter and 24 \({}^{\circ}\)C in summer facilitated the calibration process, in addition to the fact that users cannot adjust the standards of air conditioning in a personalised way. The activation time of the all-air installation was from 9 a.m. to 8 p.m. The scale and constructive conditions of the MUA's access doors prevented us from performing The Blower Door test in the MUA. To obtain the mean calculation value of the building's air infiltration--a difficult parameter to quantify--and to be able to perform the simulations in Design Builder, we resorted to results obtained in recent research, with test measurements of similarly constructed buildings around Alicante [23]. Simulations were also performed using Design Builder to adjust or calibrate the model according to the energy consumption obtained from the installation's electrical meter measurements. We proceeded to perform simulations with an all-air impulsion system, and determined that the actual renewal air volume value was 2 air changes per hour (acH). Once these prior values were obtained, the protocol established by the UNE-EN-ISO 13790:2011 standard [24] was followed, applying the value obtained from the 50 Pa (\(n_{50}\)) pressure test. The result was 0.842 acH, a high value for a building of this nature, with a low form factor value. This high infiltration value is due to the building's construction characteristics. The joints between phenolic panels had been filled with silicone, which had been deteriorating over the years. The same applied to the silicone joints of the Stadip simple glass on the ground floor. The rooftop had the same problem, as it had been executed dry, with deficient joints between the sandwich panels and the skylights.