Detail of GB/T 34617-2017

Introduction of GB/T 34617-2017

Calculation method of energy consumption for urban heating system 1 Scope This standard specifies the evaluation method of energy consumption for heating system, heating source, heating network, heating station and block heating network in urban area. The evaluation method specified in this standard is applicable to the calculation of energy consumption evaluation of urban heating system. This standard is applicable to the urban heating system from the heating source to the heat inlet of the building and using hot water as the medium to supply building heating. Among them, the calculation of heating source energy consumption is only applicable to heating sources that consume primary energy. 2 Terms, definitions and symbols 2.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1.1 the heating period time interval from the start of heating to the end of heating 2.1.2 the test period time interval from the start of detection to the end of detection 2.1.3 the evaluation period time interval for energy consumption evaluation during the heating period 2.1.4 urban heating network heating network from heating source to heating station via municipal road 2.1.5 consumer heating source heating sources directly connected to the indoor heating system of buildings, such as consumer boiler rooms, heating stations, heat pump rooms, direct combustion rooms, etc. 2.1.6 block heating network outdoor hot water heating network connected to the internal system of the building, with a design pressure not exceeding 1.6 MPa and a design temperature not exceeding 95°C, from the consumer's heating source to the building's heating inlet 2.1.7 make-up water supply station make-up water supply system of urban heating network arranged outside heating source 2.1.8 branch-line substation heat exchange station installed on a heating trunk line to separate the pressure of the pipe network 2.2 Symbols For the purposes of this document, the following symbols apply. Ak——the heating area; B——the physical fuel consumption of boiler room for heating; Bav, a——the annual fuel consumption of national heat power plants for heating; Bboiler, i——the fuel consumption of boiler room for heating; Bc——the physical fuel consumption during the test period; Bpower, i——the fuel consumption of heat power plants for heating; Bre, i——the fuel consumption of renewable energy and electric energy for heating; Bwaste, i——the fuel consumption of industrial waste heat and waste heat for heating; b——the fuel consumption per unit heat supply of heating system; bA——the fuel consumption per unit heating area; bA, z——the fuel consumption converted per unit heating area at indoor standard temperature; bboiler, i——the fuel consumption per unit heat supply of heating source; c——the specific heat capacity of water; e——the energy consumption per unit heat supply of heating system; ei——the energy consumption per unit heat supply of heating source; Gb, i——the make-up water quantity of heating source; Gb, j——the make-up water quantity of consumer heating source; Gc, i——the average circulating flow rate of heating source; Gc, j——the average circulating flow rate of consumer heating source; Gi——the water consumption of heating source; Gj——the make-up water quantity of heating station; Gl——other make-up water quantity of urban heating network; Gm, j——the measured value of circulating water quantity on the primary side of the heating station; Gm, k——the measured value of circulating water quantity at the heat inlet of the building; G0, j——the design value of circulating water quantity on the primary side of the heating station; G0, k——the design value of circulating water quantity at the heat inlet of the building; G1, c——the accumulated circulating water quantity of urban heating network; G2, c——the accumulated circulating water quantity of block heating network; g——the water consumption per unit heat supply of heating system; gA——the water consumption per unit heating area; gc, A——the circulating flow per unit heating area; gi——the water consumption per unit heat supply of heating source; g1——the water consumption per unit heat transfer of urban heating network;

Contents of GB/T 34617-2017

Foreword i 1 Scope 2 Terms, definitions and symbols 3 General requirements 4 Heat supply system 5 Heating source 6 Urban heating network 7 Heating station 8 Block heating network Annex A (Normative) Conversion method from test period data to evaluation period data Annex B (Informative) Calculation of energy consumption per unit heating area of heating system