The Economy Analysis Of Sewage-source Heat Pump System

Sewage source heat pump system has attracted more and more attention for its energy-sa ving and environmental protection in the world, and its technology has been carried out consid erable research at home and abroad. Its applications require certain conditions and mature tech nical conditions. Although our country already has a number of pilot projects, whether the sew age source heat pump system can be promoted in the market also needs to further verify. In thi s paper, we cite an actual engineering project that a Co., Ltd. located in Shandong Province bui Ids sewage source heat pump central energy station with the well-developed technology of the renewable water source heat pump. Based on the actual measurement data of the pilot project, the indicators of the sewage source system application can be validated.From the measurement around the project of a sewage treatment station, water quality can be seen that after reaching discharge standard can be drawn from reclaimed water quality is good, antiseptic, prevent biofouling and filtering processing, can be applied to the reclaimed water source heat pump system. Combined with the project required the required load cooling season and heating season, and after nine months for sewage treatment plant regeneration of water quantity and water detection, it can be seen that the amount of water in the sewage factory can meet the system of large water consumption; And after sewage treatment plant of reclaimed water is a very good low grade heat source, completely satisfy the requirements of the reclaimed water source heat pump system.Investment is a kind of products would be able to get at the beginning of application development, one of the main factors through the equipment and installation, renewable water circulation pipeline, the telecom room heating and cooling for water circulating water pipe main project, other cost analysis, we can preliminary calculated using sewage-source heat pump of the initial investment is48.3million yuan. With the traditional water-cooling chiller+boiler coal-fired boiler system compared to the sewage-source heat pump system of initial investment increased, compared with ground source heat pump system, the initial investment of sewage-source heat pump system in application and has certain advantages.Through the heat pump units and water pump power consumption in practical engineering calculation, that means the whole costs of electricity of sewage-source heat pump system. Through the economic analysis of the project, after income tax financial internal rate of return is higher than the selected industry benchmark yield; Financial net present value greater than zero, the project financial analysis indicators meet the requirement set the benchmark yield; The project of sewage-source heat pump system can not only profit, but also has a certain ability to resist risk.AS a new type of heat source,the cleanness of sewage-source heat pump system in the process of the operation only needs to consume a small amount of power, Compared to the use of self-provided boiler room or area of the boiler room, the sewage-source heat pump not only reduce the use of non renewable energy, at the same time also also reducing emissions of soot and cinder reduction, reducing CO2, SO2, NOx and other emissions.