Urban Public Building Air Conditioning Project in Anhui energy structure analysi
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Abstract: Public buildings in the city of Anhui Province Central air conditioning A survey of energy use analysis, urban public buildings air conditioning project in Anhui energy structure is irrational, should adjust its energy structure, increase the electricity storage, electric storage technologies such as the promotion of efforts to alleviate the power of the peak pressure electricity for air conditioning load shifting; full use of gas resources, advocacy gas in the air conditioning system; improve power plant's waste heat recovery efficiency, especially in the utilization rate of change of coal mine gas waste, harm to treasure; promote a variety of energy reasonable with, energy structure optimization of air conditioning.
Building energy saving strategy in the country an important part of public building energy efficiency is to start the key to energy conservation of existing buildings. On the one hand energy saving potential of public buildings, other public buildings are government buildings, should be setting an example in building energy conservation. How to optimize the energy structure of public buildings is reasonable, is an important component of building energy efficiency. In public buildings (especially large-scale shopping malls, luxury hotels hotels, large office buildings, etc.) of the annual energy consumption, about 50% to 60% of consumption in air conditioning Refrigeration And heating systems. The energy consumption of air conditioning cold and heat source unit has the total air-conditioning, Heating Most of the system. Present a variety of units, equipment, wide variety, electric refrigeration unit, Absorption Chiller Thermal storage equipment and different characteristics. The use of these units and equipment are subject to energy, environmental protection, operating costs, and many other effects and constraints, this must be objectively and comprehensively on the use of heating sources can be determined after the program was analyzed and compared.
1, Anhui, central air conditioning public buildings in the city can present situation [1]
Urban area of Anhui Province is located in 17 cities, public buildings (building area of 8000m2 or more) central air conditioning survey, of the central air-conditioning systems: Hotel Class 506 group, 398 groups in offices, department stores 119 Group Hospital 72 group. Hotel class and office users to occupy the class group of the province total number of central air conditioning 3 / 4 or more.
Survey, Anhui Province, central air-conditioning in public buildings energy structure are: electricity, gas, fuel oil, coal, urban heating network. Subjects of the investigation, the central air conditioning, heating and hot water energy structure: electricity accounted for 46.1%, 16.6% urban heating network, fuel accounted for 15.1%, coal 15%, gas 7.3%. Central air conditioning energy structure: electricity accounted for 69.8% (where the power storage 1.9%), gas accounted for 4.6%, fuel oil accounted for 10.6%, coal 8.5%, 6.5% urban heating network. Heating energy structure: electricity accounted for 35.5% (of which electricity Boiler Regenerative 2.9%), gas accounted for 8.2%, fuel oil accounted for 16.8%, coal 15.6%, 23.8% urban heating network.
Survey data reflect the year, Anhui, central air conditioning refrigeration city building total energy consumption: electricity accounted for 46.6%, 19.6% coal, fuel oil accounted for 14.9%, 12.1% for urban heating network, gas accounted for 6.8%. The total heating energy consumption: urban heating network accounted for 39.8%, coal 25.9%, 14.0% of fuel, electricity accounted for 14.0%, gas 5.7%.
Competition from a variety of energy terms of the changes: public buildings in the city can be in air conditioning engineering, electrical air conditioning and refrigeration competitiveness and stability, but a downward trend; urban heating network, gas air conditioning and refrigeration competitiveness of the rise; coal-fired air conditioning and refrigeration market space is shrinking each year, less competitive; fuel never to have air conditioning, from strong to weak. Urban heating network competitiveness comes as the first heating; fuel heating up and down repeatedly through the process of increase in size trend; the power heating, gas heating market share is not high.
2, Anhui city public works building air conditioning energy structure
2.1 Anhui city public buildings air conditioning energy structure is irrational Annual operating costs from the perspective
(means per square meter construction area, the same below), air conditioning and refrigeration: the coal was 24.7 yuan / m 2, the fuel was 47.6 yuan / m 2; heating: the coal was 25.9 yuan / m 2, the fuel was 50.2 yuan / m 2.
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