Experimental  studies  of  fragments  exterior  walls  with  ventilation.  Part  3
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 Experimental  studies  of  fragments  exterior  walls  with  ventilation.  Part  3

Heat fluxes were measured using heat meters. Measurements of heat flow and temperature were carried out remotely using a universal digital millivoltmeter on each cycle when the temperature stabilization. The temperatures and heat fluxes are measured on the inner and outer surfaces of the pilot and constructs a distance of 0.1 m from them, as well as inlet channel and vented at its exit. Studies of heat conducted in a climate chamber at first DP = 0 and then filtering in the presence of air. While using a fan to create permanent vacuum. After stabilization of the temperature measurements were made on the cross sections. At the end of the measurement cycle at a given pressure difference is varied and repeated study.
   Electricity consumption for heating the internal compartment was measured using the meter. As a source of pressure used fan. Air flow was determined by the gas meter. Air pressure difference measured with a manometer MCM. Tests were conducted both in the open and closed intake and exhaust openings.
   Procedure for thermal testing of each fragment was as follows: in the chambers was set temperature -30 C outside and 20 C with internal; supporting a given mode to stabilize the temperature and heat flow measured emf of thermocouples and heat meters and using calibration tables and conversion factors were translated into degrees and W, with open holes created by the fan pressure drop on both sides of the fragment.
   Studies have identified average temperatures. The test results are processed in accordance with the requirements of GOST 26254-84, "Methods for determining the thermal resistance of the enclosures".
   Analysis of the results showed that the difference in the ambient temperature and the temperature in the layer at the air inlet at the panel screen when warmed air flow W = 0,5 m3 / h is 4 C, W = 1,4 m3 / h - 3, 7 C, while the non-insulated panel with a screen when W = 1,0 m3 / h - 0,8 C, W = 2,3 m3 / h - 0,7 C.
   To be continued.