The problem of building energy consumption is increasingly prominent, so it is urgent to do a good job in building energy management. The following is my careful recommendation for everyone, hoping to help you.

Discussion on Building Energy Management

The problem of building energy consumption is increasingly prominent, so it is urgent to do a good job in building energy management. This paper puts forward the method of strengthening energy management, and the importance of itemized metering device in energy management, which not only solves the collection of energy consumption data of buildings, but also solves the problem of chaotic energy management of buildings at present.

Keywords architecture; Measurement; energy management

Discussion on Building Energy Management

Zhang Yu, Huang Qiaoling, Lai Zhenbin

* * * Guizhou Architectural Research and Testing Center Guiyang, Guizhou 550000***

The problem of building energy consumption is increasingly prominent, and a good energy management framework is urgent. This paper puts forward the method of strengthening energy management, and the importance of itemized metering devices in energy management, which not only solves the problem of energy consumption data collection of building projects, but also solves the problem of building energy management.

Keywords building; Measurement; energy management

1. Introduction

* * * 1 * * With China's economic and social development and increasing pressure on environmental resources, the situation of energy conservation and emission reduction is grim. While vigorously promoting energy conservation in the construction field, the problem of high energy consumption in public buildings has become increasingly prominent.

* * * 2 * * Building a resource-saving society is a strategic decision made by the central government after in-depth study of the domestic political, economic and social development history according to China's social and economic development. Saving energy is an important part of a resource-saving society, and the energy consumption of building implementation is about one-third of the energy consumption of commodities in the whole society. At present, different energy-saving management methods are adopted in different stages of buildings, and these management methods have problems such as unclear overall energy-saving objectives and disjointed energy-saving management. In fact, in different construction stages, the goal and essence of building energy conservation are the same, and they all want to control building energy consumption. Due to waste and extensive management, the energy consumption problem of such buildings is more prominent, and the research on monitoring and energy management of large public buildings is becoming more and more urgent.

2. Current situation of building energy management

2. 1 At present, the energy management of buildings is mainly realized by building equipment management system ***BAS system * *. BAS system can optimize the management of power, lighting, air conditioning and other equipment according to the pre-arranged time program, so as to achieve the purpose of energy saving. In actual management, the following energy management measures are usually adopted:

* * *1* * Timing mode: according to the working hours of the building, start and stop control equipment, such as fans, air conditioners, lighting, etc. on time.

***2*** Temperature delay method: according to the delay time of temperature maintenance in the building, turn off the air conditioning host or heating boiler in advance to achieve the purpose of energy saving.

***3*** Adjust the water supply temperature: adjust the water supply temperature of the air conditioning system according to the actual indoor and outdoor temperature, set an appropriate water supply temperature, reduce the excessive execution of the system host, and realize energy saving.

***4*** Economic realization mode: When the outdoor temperature reaches 13℃, outdoor fresh air can be directly used as return air; When the outdoor temperature reaches 24℃, outdoor fresh air can be directly sent into the room. In this case, the system can save energy in handling the return air system.

* * * 5 * * Equipment life execution: The cold and heat source host, pump, fan and other equipment in the building are executed alternately, which prolongs the equipment life and saves the maintenance cost.

2.2 The energy-saving effect of the above energy management measures is not obvious, the specific reasons are various, but in the final analysis, it is because China has not yet established an effective building energy management method. BAS system is an engineering product, not a complete set of equipment, and requires BAS system engineers to do secondary programming on site to realize the control function. The performance of the system is greatly influenced by human factors in the field. In addition, with the separation of many builders, managers and users, few users really care about how much energy is saved. In fact, due to the lack of building energy consumption model and perfect measurement means, even if users ask the above questions, they can't get accurate information. Therefore, the installation of sub-metering devices has also become an effective means to promote energy management.

3. The development of itemized measurement

3. 1 Due to the different construction years of buildings, there are great differences in maintenance structure, shape coefficient, window-wall ratio, lighting, air conditioning devices, energy management, etc., and different forms of shading and ventilation of buildings also have great influence on energy consumption. Therefore, we can't simply use the total energy consumption of buildings to measure their energy consumption, and think that high total energy consumption means no energy saving.

To judge the energy consumption level of a building, it is necessary to compare the energy consumption data in horizontal and vertical directions, carefully analyze the indoor environmental quality, and combine the implementation and management level of the building to be truly scientific, true and reasonable. Provide data support for decision-making of * * and find the right direction for further energy management.

3.2 Installation principle of itemized measurement.

* * *1* * The configuration of the electric energy management table of the existing distribution system does not involve the existing charging electric energy meter of the distribution system.

***2*** The electric energy metering device is designed to strengthen the statistics and management of energy consumption, so as to achieve the purpose of energy saving, and is not used as the basis for electric energy metering and charging.

***3*** Sub-meter installation does not change the secondary line of the electric meter of the power supply department, and it is not connected in series with the charging electric meter.

***4*** The setting of metering device should be able to effectively measure and manage energy, and ensure the accuracy and unity of metering value and the safe and reliable implementation of metering device.

* * * 5 * * The original meter data can be used as the comparative reference value of the data collected by itemized metering.

4. The significance of energy management

* * *1* * helps building users to change the energy system from extensive management to refined and scientific management. Under the original energy management mode, only the monthly electricity consumption and monthly cost of the total incoming line of building power supply are generally recorded. Even if the total daily electricity consumption can be recorded, it is impossible to record the electricity consumption and real-time current data of all lines. After installing the itemized metering device, building users can grasp the implementation of the energy system in real time and make reasonable adjustment strategies according to the implementation.

***2*** Help building users to diagnose inefficient and quasi-fault execution of energy system, and improve the execution reliability of energy system. ***3*** Help users realize energy management and energy report uploading required by national energy statistics, and improve the management level of owners.

***4*** Continue to provide building users with basic information on building energy consumption, especially the optimization and implementation of HVAC systems. Air conditioning system is the main component of power consumption, and building energy-saving transformation is also based on air conditioning system. On the premise of having a large number of energy consumption data, an effective implementation report of air conditioning system optimization is put forward to provide technical support for later energy-saving transformation.

* * * 5 * * urge energy-using units to strengthen energy management, formulate corresponding management systems, and consciously strive to improve energy-saving efficiency in order to achieve the purpose of energy conservation.

***6*** is conducive to the quantitative evaluation of energy saving effect. By installing itemized metering devices, a large number of real energy consumption data can be collected, and the analysis of the data can truly evaluate the effect of energy management.

5. Concluding remarks

Through effective energy management means, we can collect the energy consumption of buildings. Through the statistics and analysis of building energy consumption, it can provide effective data basis for decision-making departments and owners, promote the implementation and management of building energy conservation, push China's building energy conservation work to the implementation and substantial energy conservation stage of existing buildings, and finally establish and improve a standardized building energy management system, thus achieving the purpose of building energy conservation.

refer to

[1] Zhang, Wei Qingyi,,. * * * Investigation on energy consumption of office buildings.

[2] Ministry of Housing and Urban-Rural Development. Technical guide for data collection of sub-item energy consumption of energy consumption monitoring system for office buildings and large public buildings of state organs.

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