| With the continuous development of society, the demand of the indoor thermalenvironment is becoming more and more increasingly high. Building energyconsumption in the proportion of the total social energy consumption is increasingyear by year, and the energy consumption of heating, air conditioning and ventilationaccounts for40%to60%of the total building energy consumption.The powerconsumption of HVAC system is huge.Aimed at this problem, we can save energyfrom the following three aspects through research and analysis on present buildingenergy conservation situation at home and abroad: First, we can search for renewableenergy to improve the energy utilization rate, to achieve the energy transformationfrom high grade to low grade energy; Second, optimize the design of terminal systemand reform the system operation mode; Third, improve the building energy storagecharacteristic. Through the analysis of the current situation of the development oftemperature and humidity independent control air conditioning system, put forward anew type of energy tower heat pump and a new system of radiant floor displacing airconditioning ventilation.As a new type of air conditioning system, the air conditioning system of radiantfloor displacing ventilation is widely recognized for its performance of energy-savingand comfortment. The biggest difference between the new air conditioning system andthe conventional air conditioning system is that the independent control of indoortemperature and humidity and the characteristics of radiation transfering heat, so theselection of indoor design parameters, the calculation and distribution of heat and coldload, the selection of cold and heat energy resources and the design of the fresh airsystem all are different from the traditional system. The technology of radiant floorheating has already been widely used, but the technology of radiant floor cooling isnot fully mature. The technology of radiant floor cooling needs to solve the problemsof the floor condensation and the cooling capacity. And the technology ofdisplacement ventilation is mainly to solve the problem cooling capacity. Thecomposite system combined displacement ventilation and floor radiation can not onlyimprove the cooling capacity of the system and solve the floor condensation problem,but also can create a thermal comfort environment of separate temperature and humidity control for people.This paper mainly studies the practical application of the new system of the floorradiation displaceing air conditioning ventilation combined with the energy tower heatpump. And it mainly discusses the load calculation of the project of radiant floorsystem and fresh air system in summer, winter and the transition season; privides themethod of design and calculation of displacement ventilation system and the fresh airparameters of this project is selected; privides a calculating method of the heatingcapacity of the energy tower heat pump in the transition season and the heatingcapacity of this project is calculated; introduces the construction process and theoperation regulation of the radiant floor system combined with the displacementventilation system.The test results of indoor temperature field, humidity field, indoor air outlettemperature field and velocity field in the project model of the master bedroom showthat, the radiant floor and displacement ventilation air conditioning system isreasonable in design, construction and operation. By calculating, conclude that theheating and cooling energy tower heat pump can be used as radiant floor airconditioning system of displacement ventilation. This paper proved the feasibility ofenergy tower heat pump and a new system of radiant floor displacing air conditioningventilation from the technical aspect, economic aspect, environmental aspect andsocial benefits aspect. |
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