GOST R 8.592-2002 UDC 620.9.003:006.354 Group T86.6 STATE STANDARD OF THE RUSSIAN FEDERATION State system for ensuring unity of measurements of thermal energy consumed SUBSCRIBERS WATER HEATING SYSTEMS Typical methods for measuring State system for ensuring the uniformity of measurements. Thermal energy received by users in water heat supply systems. Typical procedure of measurements ACS 17.200.10 27.010 OKS 0008 Effective date 1/1/2003 Preface 1 DESIGNED Closed Joint Stock Company "The CPI-Sayan and the Federal State Unitary Enterprise" Russian Scientific Research Institute of Metrological Service (FSUE VNIIMS), introduced by the Office of Metrology State Standard of Russia 2 adopted and put into operation the Decree of the State Standard of Russia on Jan. 9, 2002 № 4 v. 3 in this standard are implemented legal norms of the Russian Federation "On ensuring the unity of measurements" and "Consumer Protection" 4 first introduced 1 Scope This standard applies to thermal energy consumed by the subscribers of water supply systems (hereinafter - VSTS), and sets the standard techniques perform its measurements. The results of measuring the consumption of thermal energy by using standard techniques should serve as a basis for commercial relations (mutual) between the supplier and consumer of thermal energy. 2 Normative references in this standard references to the following standards: GOST R 8.591-2002 State system for ensuring uniformity of measurements. Two-channel heat meters for water supply systems. Rationing limits of permissible error in measuring the consumption of subscribers heat GOST R 51649-2000 Heat meters for water supply systems. General technical conditions 3 Notation 3.1 In this standard, the following notation values, expressed in appropriate units. Qp - heat consumption, kJ; Q and - heat consumption measured by dual-channel heat meter modification II, KJ; DQ - Amendment to the results of measuring the consumption of thermal energy, the actual temperature in cold water, kJ; M1 - mass of water, held for a certain period of time on the supply pipeline VSTS, kg; M2 - mass of water, held for a certain period of time to reverse the pipeline VSTS, kg; TX .. ??at - the temperature of cold water in the primary source of water VSTS, ° C; hh .. a - enthalpy of cold water primary source of VSTS, kJ / kg; H. - conditional value (constant), enthalpy of cold water, corresponding to the chosen and entered into the program calculated value of temperature of cold water feeding the tc, kJ / kg; i - index denoting the number of the interval of time for which the heat meter measures the and calculate the parameters of VSTS needed to calculate the values ??of Q and n - total number of time intervals for which the measured and calculated parameters of VSTS in the reporting period for which the measured heat. 4 Method of measuring 4.1 thermal energy consumed by subscribers VSTS, was determined by indirect measurements using the thermodynamic equations [1] and the results of direct measurements of flow and temperature of coolant in the flow and return. 5 Measuring the practical realization of the standard measuring techniques using the following means of measurement. 5.1 Two-channel heat meters according to GOST R 51649 with the limits of permissible error, normalized according to GOST R 8,591, realizing the algorithm of measurement provided for two-channel heat meter modification II (hereinafter - the two-channel heat meters), GOST P 8,591. 5.2 Registrar of dual energy meter at a consumer organization, which provides: - recording the results of hourly measurements of the mass of coolant (water) M1 and M2 with an error of registration is not more than 0,1% - of the clock with an accuracy better than 0.01% - the absolute deviation of the time not more than 5 minutes - an indication of the date and exact time. 5.3 Registrar of dual energy meter, the organization of the provider, which provides: - hourly recording the results of measurements th.v c error registering not more than 0,1% - of the clock with an accuracy better than 0.01% - the absolute deviation of the time not more than 5 minutes - display the date and exact time. 5.4 The values ??of H. The heat is introduced into the channel by agreement between supplier and consumer of thermal energy. 6 Conditions measuring 6.1 measuring the consumption of thermal energy operates in compliance with the operating conditions of heat meters dual-listed in the technical documents on the two-channel heat meters of concrete types. 7 Preparation for measurements 7.1 Preparation for measurements carried out in accordance with the requirements set forth in the technical documents on the two-channel heat meters of concrete types. 8 Execution of measurements 8.1 Measurements of Q and dual-energy meter operates in accordance with the requirements of technical documents on a specific type of dual-channel heat meter. 8.2 The values ??of Q and obtained by dual-energy meter can not be used for commercial payments, because they contain non-exclusion methodical error caused by deviation of the conditional enthalpy H. The cold water from the actual values ??of the enthalpy of cold water for some time intervals ti. 8.3 To exclude methodological errors specified in 8.2, calculated values ??of the corrections to the results of measurements of Q and by (1) 8.4 as a separate time periods for which measured and calculated parameters of the coolant, it is recommended to use the time interval. 8.5 In contracts for the supply of thermal energy should include an item obliging the organization of the provider of thermal energy to provide consumer organizations and (or) in the organization, applying this standard techniques of measurement, average values ??of temperature of cold water for a period of time for which the calculated value of the consumed subscribers VSTS thermal energy and an invoice for its payment. Note - When applying organization to the consumer of thermal energy from several sources of heat, running on a single thermal network and offering makeup cold water of different temperatures, as the values ??of the cold water temperature should be taken a weighted average (as a "weighting" used the masses of cold water feeding the at various primary sources). 8.6 For the result of measuring the consumption of thermal energy Qp take the value (2) 8.7 The values ??of the consumed thermal energy obtained by the formula (2), should serve as a basis for commercial transactions between supplier and consumer of thermal energy. Nine Errors measurements of thermal energy consumed by subscribers of water supply systems 09.01 Meeting the requirements this standard provides the results of measurements of thermal energy consumed by subscribers VSTS, to all ranges of changes of process parameters of VSTS mentioned in the technical documents for the two-channel heat meter, from limit admitted relative error, established for two-channel energy meter in accordance with GOST 8,591. APPENDIX A (informative) Bibliography [1] MI 2412-97 State system for ensuring uniformity of measurements. Water heating system. Measurement equation of thermal energy and the amount of coolant Key words: heat, water heating system Contents 1 Scope 2 Normative references 3 Legend 4 Method of measurements 5 Measuring 6 Conditions measurements 7 Measuring Preparation 8 Execution of measurements 9 errors in the measurements of thermal energy consumed by the subscribers of water heating systems Appendix A Bibliography of Published 07/07/2008 State Standards on the topic "Electrical, lighting, security systems," GOST 15597-82 Fixtures for industrial buildings. General specifications GOST 2.702-75 Unified system for design documentation. Rules for making electronic circuits with GOST 2.752-71 Unified system for design documentation. Graphical symbols in diagrams. Robot device GOST 2.755-87 Unified system for design documentation. Graphical symbols in electrical circuits. Device switching and contact connections GOST 2.756-76 * Unified system for design documentation. Graphical symbols in diagrams. Is often perceived electromechanical devices GOST 2.757-81 * Unified system for design documentation. Graphical symbols in diagrams. Elements of the switching field for switching systems GOST 2.758-81 Unified system for design documentation. Graphical symbols in diagrams. Signal Technology GOST 2.762-85 * Unified system for design documentation. Graphical symbols in electrical circuits. Frequencies and frequency bands for transmission systems GOST 2.763-85 * Unified system for design documentation. Graphical symbols in electrical circuits. Device with a pulse-code modulation GOST 2.764-86 Unified system for design documentation. Graphical symbols in electrical circuits. Integrated optoelectronic display elements GOST 2.768-90 Unified system for design documentation. Graphical symbols in diagrams.
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