Large Bathrooms With Waste Heat Recovery Technology In Cold Area Feasibility Study

The expansion of China’s economy has createda rapid development of energy demand due to increasing urban population density. Sewage, medium-sized public baths and baths inmajor northern colleges and universities and other buildings in the discharge contain a lot of heat. To continue the development of the Chinese economy thereis an urgent need to transition energy use; consequently, energy efficiency has attracted widespread attention.Single water source heat pump and heat exchanger are utilized when ordinary domestic sewage comes in contact with heat, and some cannot handle the dirt. Due to the fact that the entire water source passes through the heat pump system, thermal efficiency gradually decreases. In order to ensure that the special nature of this type of construction is used for the heat, we use a conventional sewage source heat pump with an auxiliary heat source in a shared construction of indoor heating (air conditioning), and addressing the domestic hot water heat problem. The water source heat pump system consists of auxiliary heat source heat pump water, sewage tank, auxiliary heat source, and the end of the four-part system. In this four-part system, the auxiliary heat source, heat pump sewage system design and schematic drawing, and showed in this diagram illustrates the operation of the system model. In the water source heat pump system design, the match itself focuses on the sewage source heat pump unit (heat pump units using the ladder), its advantages and disadvantages, and the necessity of actual practices and invasive cesspool sewage heat exchanger.The design of the auxiliary heat source is primarily to determine the capacity of the auxiliary heat source and ancillary equipment in accordance with the building feature usage. The conventional heat sources include coal-fired boilers, gas boilers, electric boilers, and an oil-fired boiler. The focus of this thesis is to better understand the complex sewage source heat pump system, the direct application of this system in this article and the actual project-Changchun, a bath. According to the calculation of the various parameters of the actual project, which calculates the heating load, hot water load, air-conditioning load, water emissions and discharges, heat can be recovered. The use of Dest-h simulation software calculates load simulation at the annual maximum heat load 637.5KW. Dest-h calculates the annual maximum heat load indicators at 134.2W/m2. The engineering design for the economic, environmental benefit analysis calculates the payback period, the final OK to water source heat pump plus gas boiler in the form of practical engineering heating, domestic hot water and air-conditioning heat and cold sources of this scheme is feasible.Comprehensive analysis demonstrates that the use of water source heat pump systems in complex energy and economic aspects has excellent results. Proper selection of conventional sewage source heat pump matched to heat can make the system more energy efficient, economical and stable.