Method for assessing efficiency of underground powerhouse ventilating and air conditioning system

Abstract

The invention provides a method for assessing efficiency of an underground powerhouse ventilating and air conditioning system. Thermometers, hygrometers and air volume monitors are arranged outside an underground powerhouse and in an air inlet duct opening and an air outlet duct opening of the ventilating and air conditioning system. The method comprises the following steps that the initial temperature and the initial humidity are measured, and the initial air enthalpy is calculated; the outlet temperature and the outlet humidity D2 are measured, and the outlet air enthalpy of the ventilating and air conditioning system is calculated; the initial air volume and the outlet air volume are measured, and the ventilation heat dissipation quantity is calculated; the refrigerating capacity and total consumed power of a refrigerating unit are obtained; the efficiency of the ventilating and air conditioning system is judged. According to the method, the designing and operating energy consumption level of the ventilating and air conditioning system can be comprehensively judged, it can be dynamically and comprehensively reflected that the ventilating and air conditioning system can adapt to the change of environment heat, a value basis is provided for judging whether the arrangement of ventilating and air conditioning systems of different underground powerhouse is reasonable or not and whether operating is achieved in an energy-saving mode or not, and the theoretical foundation and a mathematical model are provided for making system design and energy-saving targets for operation management, assessing system energy saving level and making energy saving strategies.

Description

technical field [0001] The invention relates to a method for evaluating the efficiency of the ventilation and air-conditioning system of an underground powerhouse of a hydropower station. Background technique [0002] Before the completion acceptance of the ventilation and air-conditioning system of the underground powerhouse of the existing hydropower station and the underground powerhouse of the pumped storage power station, in the measurement of environmental and sanitary indicators, only a single numerical measurement of the environmental indicators of the hydropower station is used to determine the temperature and humidity parameters of each place Whether it meets the design and related labor hygiene standards, for example, only measure the operating parameters of a single ventilation and air conditioning equipment, such as air volume, flow, power, etc., to evaluate the efficiency index of a single equipment. In fact, the ventilation and air-conditioning system of the u...

AI Technical Summary

Problems solved by technology

In fact, the ventilation and air-conditioning system of the underground powerhouse of the hydropower station is a comprehensive system. Due to the dynamic influence of external environments such as environmental parameters and equipment operating conditions, the entire system is interrelated. It is difficult to comprehensively detect the entire ventilation and air-conditioning system by measuring a single data index. effectiveness

At this stage, there is a lack of a simple and convenient evaluation method that can fully reflect the performance parameters of the system by using the measured data to uniformly evaluate the comprehensive performance of the ventilation and air conditioning systems of each power station

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