| With the massive use of fossil energy,the restriction of energy on human society and economic development and its impact on resources and environment are becoming more and more obvious.With the advent of the leisure age,leisure tourism is becoming a new round of economic boom and gradually sweeps across the world.Tourist resorts are usually located far from downtown areas.It is out of the scope of the municipal heating,and the energy system cannot affect the local ecological environment,so the energy system of the building group requires to use local renewable energy resources.Based on the national advocacy of energy conservation and emissions reduction and social urgent demand for clean and renewable energy use,in this paper,a tourist resort in hot summer and cold winter area is selected as the study object.Firstly,the energy supply side model is established and the demand side load is simulated,then the related equipments of different energy systems are selected.Thirdly,the energy consumptions of different energy systems are simulated based on operation strategies.Finally,a comprehensive evaluation model is established for the energy system evaluation.The main research contents of this paper include:（1）Existing energy resources in the region of the tourist resort are analyzed,and energy supply side models are established,including ground source heat pump,water source heat pump and air source heat pump models,to determine the energy supply side resource potential for the buildings in the region.（2）Hongye software is used to calculate the annual hourly cold and heat load of the buildings in the region,study the types,quality and quantity of energy required.Then determine the energy demand side requirements.Finally,the distribution of cold and hot loads in buildings is analyzed and discussed.（3）According to the simulation results of the cold and heat load on the demand side of the buildings in the region and the cold and heat energy provided by the supply side,the energy system form of the buildings is determined.Then the equipments are selected.At the same time,the capacity of the main equipments are calculated.Finally,the systemconfiguration is optimized.（4）TRNSYS software is used to establish the simulation model of energy system and the energy consumptionof the energy systems are simulated.And the simulation results are compared and analyzed.Finally,the operation strategies of the energy systemsare are studied based on the energy demand side and the supply side.（5）The economic benefit model and environmental benefit model of different energy systems of the building group are established.Then the economic and environmental benefits are studied.The comprehensive evaluation model of energy system is established by VIKOR method.（6）The distribution of cold load line in tourist resort is similar to a parabola,and the load value at wave peak is large;the heat load is evenly distributed with small fluctuation.The cooling load reachs its maximum value of 11792.64 kW at 4960 h,and the heat load reachs its maximum value of 5423.79 kW at 537 h.For cooling load,the load rate within2140%occupies the maximum time,its time is 1165 h,which accounts for 40.12%;while the load rate within 81100%occupies the minimum time,its time is 103h,which accounts for 3.55%.For heating load,the load rate within 020%occupies the maximum time,its time is 1646 h,which accounts for 44.37%;while the load rate within 81100%occupies the minimum time,its time is 126h,which accounts for 3.40%.（7）According to the simulation results of energy consumption,the energy consumption of a single air source heat pump system is the largest,which is 7.26×1010kW·h.The energy consumption of the two water-air source heat pump system is the lowest,which is 3.19×10100 kW·h.For economic and environmental benefits,the two water-air source heat pump system is the best,and the economy of a single air source system is the worst.Finally,from the VIKOR results,it indicates that the two water-air source heat pump system is the optimal system.The research of this paper is of great significance to the planning and design of the energy system of the building group in the tourist resort.The resource-side model,load-side model,various production capacity models and various system evaluation models can also be used for building energy consumption simulation and performance evaluation of the building energy system. |
