Detail of GB/T 7190.1-2018

Introduction of GB/T 7190.1-2018

GB/T 7190.1-2018 Mechanical draft cooling towers - Part 1: Medium and small open cooling towers 1 Scope This part of GB/T 7190 specifies the product classification and designation, requirements, test methods, inspection rules, as well we marking, packaging, transportation, storage and others of medium and small open cooling towers. This part is applicable to counter-flow and cross-flow mechanical draft open cooling towers with single tower cooling water volume less than 1,000 m3/h and equipped with fill. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 1449 Fibre-reinforced plastic composites - Determination of flexural properties GB/T 2518 Continuously hot-dip zinc-coated steel sheet and strip GB/T 8924 Test method for flammability characteristics of fiber reinforced plastics - Oxygen index method GB/T 13912 Metallic coatings - Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and test methods GB/T 31539-2015 Pultruded fiber reinforced polymer composites structural profiles HJ 706 Technical specifications for environmental noise monitoring correction for measured noise level 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 mechanical draft open cooling tower equipment or device that adopts forced ventilation by fan and direct contact between cooling water and air for heat exchange, so as to transfer the heat of cooling water to the atmosphere 3.2 fill depth horizontal distance between the two end faces of air inlet and outlet of each side fill of cross-flow cooling tower, excluding the inlet air regulation and water collection sections 3.3 air/water ratio ratio of inlet dry air mass flow rate (kg/h) to inlet cooling water mass flow rate (kg/h) 3.4 thermal performance curves relation curve between number of transfer units of cooling tower and air/water ratio 3.5 standard working conditions unified working conditions for evaluating the performance of cooling towers, including inlet air dry-wet bulb temperature, atmospheric pressure, inlet-outlet water temperature 3.6 nominal cooling water flow rate manufacturer's nominal cooling water flow rate, m3/h, under standard working conditions of cooling tower 3.7 standard cooling water flow rate cooling water flow rate, m3/h, of cooling tower under standard working conditions 3.8 cooling capacity calculating results of cooling performance of cooling tower, i.e. the ratio of the temperature difference between the inlet-outlet water obtained through conversion to the temperature difference between the inlet-outlet water under standard working conditions, or the ratio of the standard cooling water flow rate of the cooling tower to the nominal cooling water flow rate, expressed by percentage 3.9 measuring noise standard point measuring point located 1.5m above the top surface of the foundation, with a horizontal distance of one tower diameter or equivalent diameter from the tower wall in the direction of the tower air inlet 3.10 consumptive electric power ratio ratio of the input active power (kW) of the cooling tower fan drive motor to the standard cooling water flow rate (m3/h) 3.11 drift ratio ratio of the amount of water floating out of the cooling tower outlet to the amount of water entering the tower per unit time 4 Product classification and designation 4.1 Product classification

Contents of GB/T 7190.1-2018

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Product classification and designation 5 Requirements 6 Test methods 7 Inspection rules 8 Marking, packaging, transportation and storage 9 Others Annex A (Normative) Test method of cooling capacity Annex B (Informative) Examples of cooling capacity calculation Annex C (Informative) Simplified test method for the cooling capacity of the cooling tower under standard working conditions Annex D (Nominative) Noise measurement method Annex E (Normative) Test method for the consumptive electric power ratio Annex F (Nominative) Test method for the drift ratio