Applied Research Of Ground Source Heat Pump Technology With Horizontal Heat Exchanger In Civil Air Defense Project

In view of the construction and appliance characteristic of the civil air defense project,by way of investigation and study,this article proposed placing the ground source heat pump horizontal heat exchanger in the ledger wall of project,will provide condensation radiation for the air-conditioning system of the project in summer.After the computation and the analysis,the civil air defense project uses the ground source heat pump technology with horizontal heat exchanger to be possible to enhance internal personnel's hot comfortableness,the air-conditioning system work more reliably.Compares with the traditional air conditioning cooling system,the air conditioning cooling system in the civil air defense project of the ground source heat pump with horizontal heat exchanger has superiority in the protection and camouflage performance of wartime,the water resources consumption and the construction costs.This article uses the ANSYS software for the simulation analysis,has established four kinds of models in view of the horizontal heat exchanger in the different placing position and the spacing in the concrete ledger wall.Carries on the value simulation analysis to the model temperature field of the horizontal heat exchanger after run 2 day, 5 day and stopped 12 hour in summer,outputted the model temperature field colored chart,obtained intermediate point temperature of the horizontal heat exchanger and the ground temperature changing rule,and the model hot environment restoration condition after the stop movement.Through the computation and the generalized analysis,had determined model for the most superior model,that the pipe placing lower part in the reinforced concrete ledger wall,the spacing is 0.6 meters.Take some small afterheat civil air defense project of the Luoyang area as the example,calculated the air conditioning load of this project in summer,the horizontal heat exchanger length which in the ledger wall is 3250 meters.Obtained that the horizontal heat exchanger length is 3130 meters by the analog data computation which the air conditioning unit normal operation needs,the computation obtained the average heat dissipating capacity of the unit length horizontal heat exchanger is 43.45 W/m, only lays the horizontal heat exchanger in the project ledger wall to be possible to satisfy the air conditioning load request.Regarding the big afterheat civil air defense project,may in the top,in the ledger wall lays the horizontal heat exchanger,may increase pipe installation length and the radiating surface,but also may returns to in the earth fill in the outer wall and between the hole excavated for building foundation side slope to lay the multi-layered horizontal heat exchanger,satisfies the air conditioning movement request.Above research indicated that,the air conditioning system of the civil air defense project uses the ground source heat pump horizontal heat exchanger to carry on the condensation radiation is feasible in summer,the analog computation obtained the target parameter and the most superior model has the reference value to the ground source heat pump horizontal heat exchanger in the civil air defense project application and the design.