Research On Tunnel-type Heating System Using Fuel Gas Heat In Northernrural House

Heating season lasts for more than five months in cold regions of China,because of poor insulation performance in north rural residential areas, while lowheating thermal efficiency80%of the total energy consumption of heating energyconsumption, reduce heating energy consumption in rural areas is an importantissue in rural energy efficiency in buildings.The heating current situation inDecember2012and January2013weremeasured by Research teamunder the jurisdiction of Harbin Ash Township with theinvestigation.Research found that because the fuel indoors, kang, firewall and otherheating methodscan cause the decline of indoor air quality, with the construction ofa new socialist countryside, more and more farmers started using soil heatingheating, The man-made central heating equipment boiler exhaust volume andtemperature high heat losses great. In the village of Ash Township people andcookstoves and soil heating boiler exhaust were measured and found that the maincomponents of the flue gas and the state of fuel types and combustion, excess airratio test between2-10, smoke large and high temperature flue gas by directcalculation of physical properties, drawn to the reference temperature at20℃, soilheating can be used for the purpose of cooking fumes large amount of waste heat isabout22.36kW, soil heating heating flue be available when more than Heat about0.84kW, when a large amount of waste heat available cookstoves be cooking fumesabout31.40kW.According to the energy cascade utilization theory, the tunnel-type flue gasheat heating mode, using the man-made central heating equipment heating in themain activity area personnel to ensure good thermal comfort and indoor air quality.In the area of non-essential personnel activities authentic style flue gas heat heatingheating methods, improving fuel efficiency. Waste heat for heating the area to bedetermined in accordance with the flue gas waste heat available. Proposed wasteheat tunnel type constructor heating methods and operation mode. Were given thefloor to define the amount of waste heat radiating authentic style heating methods,heat transfer efficiency, regenerative properties, flue size, flue resistance and otherimportant parameters, determine the principles and methods.The waste heat for heating the room geometry authentic style and simplifiedphysics, the model established flue gas heat exchanger for heating the room anauthentic style, including a simplified load evenly distributed model, floor heattransfer model, the indoor air heat balance equation, smoke gas heat balanceequation. Establish numerical model flue heat exchangers, learn ways to build kang,identified no smoke screen, front smoke screen after smoke screen, straight holetype, flower type, such as flue-hole layout. The three rural state test to get throughthe exhaust into the flue, the flue hole flower arrangement superior thermalperformance found in other ways. Calculation model established by the room tospend the entire heating flue hole layout, floor calculated heat transfer and heattransfer efficiency and heat transfer efficiency is60.8%. Get the indoor temperaturedistribution to meet the thermal comfort requirements.A typical model house as a prototype to test the farmers to build houses in coldregions, the model is authentic style flue gas heat heating design calculations andanalysis and comparison of different heating methods, the discovery of authenticstyle using waste heat for heating can save9.17%heating energy consumption.