Improving the heating networks efficiency by implementing instrumental methods of control

Abstract

Problems of increasing the reliability and efficiency of heating networks operation are closely related to the reduction of costs for the repair and restoration activities. The high cost of installation and emergency restoration work in the conditions of a shortage of funds dictates the need to develop and implement new methods of maintenance. Diagnostics of heat networks allows to determine their technical condition, to identify the most decrepit sections of pipelines for the purpose of repair work.

Assessment of the thermal accumulating solar stations efficiency

“…Block 5: calculation of Ut by formulas ( 15)- (19). Block 6: calculation of Ts by the formula (20). Block 9: calculation of Ub by formulas (14).…”

“…(20) Calculated local efficiencies according to equations (3) and (5'), as well as their relative errors in relation to test data are presented in Table 4. At the same time, for modes in which tout >50°C and tin>tv, considering the logarithmic change in the liquid temperature, it was determined by the following equation: When calculating the solar DHW system [18][19][20] in the non-heating period, the following are used: the average daily intensity of the incident solar radiation of the calculated month in the collector plane, the average daily air temperature of the calculated month, average daily heat losses.…”