Analysis On The Energy Audit And Load Influence Factors Of A Hotel

In recent years,with the increase of the total construction in our country,the building energy consumption is rising.Under the premise of meeting the relevant norms,this paper takes a five-star hotel in Shanghai as the research object.The energy audit work is carried out for the research object,the energy consumption characteristics and energy saving potential of the hotel are analyzed by means of actual investigation and building energy consumption simulation.The main research contents are as follows:First of all,in order to master the overall energy consumption of the hotel,the basic information of the hotel's construction,the main energy consuming equipment(air conditioning system and the boiler system)parameters and energy consumption data are collected by means of field investigation.On this basis,the paper tests the structure of the hotel,the main energy using equipment and the indoor environment,and splits the energy consumption of the hotel.It is concluded that the air conditioning energy consumption is the focus of energy saving.Secondly,in order to grasp the hotel Year-round load situation,the building energy consumption simulation software DeST was used to simulate the hot and cold load.And the orthogonal experiment method was used to analyze the main controllable factors of hotel load.It is concluded that the order of the significant factors of cold load: Solar heat gain coefficient > External window heat transfer coefficient > occupancy rate > Wall heat transfer coefficient > Fresh air index > lighting power density(LPD)> Roof heat transfer coefficient,and the order of the significant factors of heat load: External window heat transfer coefficient > Wall heat transfer coefficient > occupancy rate > Fresh air index > Solar heat gain coefficient > lighting power density(LPD)> Roof heat transfer coefficient.Finally,combined with the measured results of the energy consumption problems and the significant results of the load factors,this paper analyzes the energy saving potential of the hotel and puts forward energy-saving concrete scheme on the envelope and air conditioning system.Besides,in the premise of combining relevant norms,this paper puts forward the evaluation index of the economic and feasibility of the reform scheme by means of simulation.The results show that,for the energy saving renovation of the envelope structure,the external window shading is considered as an energy saving renovation project,and the external wall thermal insulation transformation is not suitable for the hotel.For the energy saving transformation of the air conditioning system,it is recommended to carry out energy saving transformation from three aspects: the chilled water delivery system,the room temperature control and the exhaust heat recovery.