Design Of Noodles Drying Combined Energy-saving System

In this paper,the drying process parameters of the noodles were determined,and the method for analyzing the heat consumption of the noodles was established.Based on the 750-type low temperature cableway noodle drying room,a natural gas steam boiler was used as the main heat source,and the air source heat pump waste heat recovery system was designed.The solar heating system is an auxiliary noodles joint energy saving system for the purpose of energy saving,cost reduction and efficiency increase.This topic innovatively applies solar energy and heat pump technology to noodles production,which not only compensates for the disadvantages of discontinuous solar heat supply,but also recycles waste heat from waste heat and improves energy efficiency.The entire system is energy-saving,environmentally-friendly,safe,and reliable.Simple.The main design content is as follows:1.According to the minimum installation distance of the front and rear two-row collectors and the available roof area of the workshop,the maximum installation group number of the collectors is determined to be 200 groups,and the total heat collection area is 1576 m~2.Annual average heat collection per unit of 743.2kw·h,with 2160 meters of?32×3/62/6/1 steel and aluminum composite finned tube heat evenly distributed to the four production lines.According to the operation mode of solar hot water system,the calculation,selection and protection design of the circulation pipeline,water pump,electric actuator valve and water tank are performed.At the time of design,all pipelines are considered in the same process to ensure even water distribution;no hot water storage tank is provided,and hot water is sent to the production line in time after being sent out to the heat collector to reduce heat loss;the electric control valve takes the existing production control signal.Turn on the electric actuator valve on the heating section of the corresponding drying zone to achieve heat supply.2.The heat pump waste heat recovery system heats the fresh air in the drying room.According to the extreme winter weather in Zhengzhou,the temperature required for heating and supplementing the fresh air to 50°C at a temperature of-10°C is 200.54kw·h and the heat pump COP.It is determined that the compressor's maximum input total power should be55.15kw·h.According to the ratio of the maximum demand heat and the average demand heat of the heating and fresh air supply,the ratio of the maximum demand heat to the average demand heat is 4:3.The compressor components are four groups.In the winter,all four compressors operate,and the three compressors are normally maintained.The other time is based on supplemental wind.Fresh air heating demand automatically selects the compressor open group number.The heat pump waste heat recovery system is synchronously started and stopped with the exhaust tidal fan,and the frequency of the exhaust fan of the waste heat recovery system is controlled according to the number of tidal fans.The 4 compressors automatically control the number of start and stop according to the heating temperature of the fresh air supply.When the supply air temperature is lower than the set value,the number of compressor starts is gradually increased until the temperature reaches the set value or the compressor is fully turned on.When the temperature is higher than the set value,gradually reduce the number of compressor start until the temperature reaches the set value or the compressor is turned off.3.Explain the joint energy-saving system control procedures,benefit analysis,and verify the effectiveness of the joint energy-saving system in combination with actual production.