】 【Weak current college building control technology in the application of the energy star.

Building control technology for electromechanical equipment management and maintenance of an essential control technique. It has contributed to improving the performance of construction equipment, and will contribute to building control system analysis capacity, control ability and hardware implementation capacity, in order to truly achieve control integration. In building energy saving trend, building control has already been used as a building intelligent systems in depth and the potential of an important content.
In public buildings, the hotel building is a large energy and electricity cost is usually the cost of inter hotel venues and labor costs other than the maximum expenditure, but most hotels yet the tariff as an important cost control. Tsinghua tongfang as intelligent building manufacturers, in the field of building control technology has a certain amount of accumulation, its proprietary intelligent control system for RH has many hotels success application, short term realized return on investment. The following to have practical project-based, describes building control technology in power-saving, energy-efficient Hotel application status.
First, energy-saving prerequisites: a scientific and rational building control system design
Building control system design of reasonableness will be directly related to the energy saving effect. Engineering design in occupies the entire link, in addition to the common position of the control, in order to effectively control and avoid the waste of energy, you should also note the following:
1. refrigeration unit rate control: in General, water chillers, water pumps, cooling tower is run in parallel. Therefore, the required valve with the start of each unit. In each chiller for cooling water intake pipes installed electric butterfly valve for water chillers stops running off the cooling water waterway. In each of the inlet pipes of cooling tower equipped with electric butterfly valve for cooling tower stops running off the water. In addition, in each of the chilled water chiller return water pipes with electric butterfly valve for water chillers stops running off the frozen water waterway.
2. the by-pass regulation: in chilled water supply and return water bypass tubes retrofit electric regulating valve. When supply and return water pressure difference exceeds the set value, it will automatically start the bypass valve, the water does not flow through unit as part of the coil and by-pass back to chillers.
3. the distribution system monitoring: General high-voltage power distribution systems to measure the main entry of three-phase, three phase current, active power, power factor. Low-voltage distribution system to measure the main entry of three-phase, three phase current, active power, power factor and frequency, active electrical degree. In order to better understand how the building each electrical equipment working state, in the low voltage side of each main outlet circuit for voltage, current, active power measurements, so that the statistics each outlet circuit of the device, power consumption, make energy-saving policy, making the curve.
In addition, you can also consider heat control, heat number control and air conditioning unit control design.
2. energy-saving tips: building control systems control strategy
In reasonable system project design, through implementation of building control technology to achieve each of the electromechanical equipment of the fine, energy-saving measures will be implemented, and give full play to each device for highest efficiency, extend equipment life and reduce operational costs, increase hotel hotel management and service level.
1. the hotel lobby of temperature control: the lounge is the hotel's facade, 24 hours a day for guests and open, there is no time to rest. Need for air conditioning throughout, but air conditioning load is different. Because the passenger Hall distribution between regular, ordinary morning check-in of passengers, noon departure passengers, rendered two regular peak; the rest of the time passengers are more random, this resulted in the lobby space heat load also renders regular fluctuations. Floor control system according to the load curve adjustment control of the State, ahead of time that the indoor temperature comfort, reduce the volatility of energy control dynamically, depending on the time consuming adjustment air conditioning units and water chillers operating condition and efficiency to achieve energy-saving control.
2. room temperature control: room room monitoring should make networking control forms. Guests at the room temperature is regulated primarily by guests autonomy to meet guests feel as first to ren. But in the rest room, air conditioning generally do not completely closed, but open to 1/3 condition, to guarantee the room furniture maintenance and longevity, and maintain the temperature of the whole hotel. Guests at the time of registration software by the front desk and room control system interfaces, rooms air conditioning open automatically and according to the different needs of customers to the room temperature setting an appropriate temperature; guests leave automatic recovery to leave the State. Cleaners or other staff to enter time depending on the status and content of the room air conditioning and electrical facilities adjusted to the appropriate setting State. Hotel in this way you can have the purpose of the control room at the end of the State, to understand customer's habits and avoid a room air conditioner normally open or closed because the air conditioning and let guests entered the room there are comfortable feeling.
3. floor temperature control: most of the hotels, especially in tourist hotels, all have high season and low season. Even in the off-season, the guest's comfort and no changes are required. But then if all the units of the building are open will result in a lot of energy depletion, increase hotel operating costs, or even make ends meet. Therefore, you can rely on hotel management software, self-diagnostics function will guests set to one or several regions, where only the control of the relevant regional devices start.
4. the equipment area and kitchen temperature control: equipment area include laundry room, equipment rooms, etc. These rooms are larger, space, equipment, heat, air comfort requirements, but requested that air flows better, can take away the heat, the device to ensure that the personnel work efficiency and improve the efficiency and life of the device. So fresh air supplies and outdoor ACH volume should be based on room, heat, oxygen to adjust to the appropriate scope of supply must not be blind.
5. car air control: car park of the air quality is not high, so long as the quality of indoor air environment reach the normal value or minimum value. Through the concentration of CO2 concentration, CO and smoke detection of turbidity levels, etc., using a central monitoring system settings for manual and automatic operation, the start and stop sending, exhaust fan, control of air supply and exhaust airQuantity.
6. interior lighting control: indoor lighting generally can be divided into place (Hall, dining room, living room), back office and public space (corridor, toilets). General common control mode: with sequential controller, combining daylight light perception or Lux meter, access to thermal switch gear, build a whole group control type lighting control systems, etc.
Third, the ROI guarantee: high level management and system maintenance
Building automatic control system is adopted on energy management to investors can benefit from the return of hotel intelligent system. Different energy saving technology in economic analysis are shown in the following table:
From the above analysis we can see that the staff of high level management and reasonable maintenance allows energy to produce maximum benefits. The fact is, and is not a smart building with the building automation system will certainly can produce energy-saving benefits, nor is it upfront investment in building automation systems, energy-saving effect is good. Reasonable investment building automation system, product manufacturers on a customer's long service work, such as personnel training, system, remote maintenance, energy management, analysis, and so is the only long-term means of energy saving.
In recent years, with control technology and the development of information technology, building automation products have been made in occupies 60% market share. Domestic building automation products manufacturers rely on local advantages, providing regular after-sales training and remote system maintenance with more prominent advantages. Tongfang RH intelligent control system has been successfully applied in the great Hall of the people, Beijing Hotels, Beijing CBD International Conference Center, kuntai project.
According to statistics, China's average annual electricity consumption in general hotel in 30 000-150 000 degrees, star in a 1 million-10 million degrees, 50 000-300 000 of the majority of users. Use advanced control technology to achieve energy-saving energy-saving management is not just the problems relating to hotel and increase revenue, but rather concerns the social energy conservation and sustainable development. Here, we want our hotel owners and developers a common concern about this issue.