Research On Animal Shelter Heating System Based On TRNSYS Simulation

In today's energy crisis,building energy-saving and environmentally-friendly heating methods will greatly reduce China's energy pressure.In the context of promoting clean and smart heating,many types of clean energy such as photovoltaic,photothermal,geothermal,and air energy are gradually participating,which has greatly alleviated the pollution problem in the tropical zone.In combination with the heating requirements of the zoo's animal houses,the ground source heat pump is used for heating,which enables the individual venues to be controlled independently without affecting each other,while meeting the different temperature requirements of various animals.This study selects four animal houses which include 9 kinds of animals with huge difference in life in Shijiazhuang Zoo for heating system design.The suitable living environment and the actual situation of the enclosure were studied,and the thermal load of the enclosure was described and calculated by the DeST software.According to the characteristics of the enclosure load,the definition of the standard value of peak thermal load was proposed and calculated systematically.The load of zebra-animal-house and jaguar-animal-house is checked,and the operation of GSHP system and SGSHP system is simulated by TRNSYS software,and the best heating mode is determined as solar GSHP system.The solar energy system and the ground source heat pump system are connected in series and supply hot water for the ground source side for secondary heating,and store heat for the soil in summer.For the changes of the temperature of feed and return water and the soil temperature at the ground source side,it can be seen that the above scheme is feasible.The kangaroo-animal-house heating area and the wolf-house-heating area use the TRNSYS software to simulate the system operation and soil temperature of the ground source heat pump system and the solar-ground source heat pump system at the well spacing of 5 m,6 m,and 7 m.Based on the actual engineering and economic aspects,it determines that the heating system is more suitable for both,that is,the kangaroo animal house adopts the solar-ground source heat pump system with a 6-meter well spacing,and the wolf-animal-house uses a 7-meter well spacing because of its small number of wells.The ground source heat pump system is heated under the spacing,and the soil temperature can be maintained at around 14.5 °C without any decrease.