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Data acquisition in the ENEA-JRC testcell is controlled by a MicroVAX II computer, a multiuser, multitasking system. The sensors applied are PT-100, solar radiation meters, heat flux sensors, wind velocity and direction meters, power convertors and instruments to measure humidity, daylight, pressure difference, ventilation rate and cooling power. The main program creates day files and writes calculated values to them. These are used to control the ongoing experiment and for the calculation of averaged daily and hourly values covering an experimental period of some weeks. One Mediterranean test cell is available to investigate the thermal behaviour of a building component. To reduce difficulties in identifying parameters, a heating/cooling system is used to alter the indoor temperature. Of several test procedures available, PRBS (pseudo random binary sequence) control of the auxiliary energy seems promising.

Additional information

Authors: BLOEM J J, JRC Ispra (IT)
Bibliographic Reference: Paper presented: Workshop on Passive Cooling, Ispra (IT), April 2-4, 1990
Availability: Available from (1) as Paper EN 35600 ORA
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