District Cooling In The Residential Construction Conditions Of The Advantages Of Using

This article describes the developments in district cooling, a clear field of district cooling in the international advanced level, but also shows us in this area there is still much room for development. With central heating as an entry point into the details of the advantages and feasibility of district cooling.Introduces the basics of cooling and refrigeration, district cooling system will be split with an ordinary air conditioning, residential central air conditioning, central air conditioning central compared. And forward-looking introduction to the CCHP with district cooling combination-it is the energy ladder in accordance with the principles of recycling, to get maximum use of energy, a new approach to energy conservation.After field research and field visits to select a relatively common issue in this district as a model, and uses relatively well in the domestic air-conditioning simulation software-DeST simulation software simulation. The model consists of residential buildings, commercial buildings, kindergartens, large stores, business clubs and several community service center building type, construction type is relatively complete. Topics chosen for the outdoor Wuhan determined parameters as the basis for the cooling load of residential buildings within each type of simulation, respectively, resulting in a load of each building, and air-conditioning system in the cooling of the running time.The model assumes that the building conditions, choose a different air-conditioning system for a cold source, pipeline network and the air terminal equipment, through access to fixed and inquiries to manufacturers, come to different systems of the initial investment, using a drawn load, calculated running costs of different systems. Made a technical and economic comparison, concluded:population density, air conditioning, building a longer running time for the centralized air conditioning systems; building density smaller, higher floors of buildings, the use of a comprehensive energy prices VRV system Instead, economic, and find the centralized district cooling system central air conditioning and for a clear distinction between model size limits, in order to achieve the purpose of practical engineering guidance. Subject is given three conditions:First, central air-conditioning system of centralized conditions; Second, conditions for district cooling systems; third, central air conditioning system and the centralized district cooling system can be conditions.Comprehensive energy prices follow the DCS method optimization model, calculated and drawn in different hair density and different cooling radius, the simulated cell's district cooling system integrated energy prices. With the increase of hair density residential buildings, district cooling system integrated energy price decreases. When the building in which density is less than 16,540 gross m2/ha, the system uses integrated energy prices VRV office systems, residential central air-conditioning system, centralized high, is not suitable cooling system, such cases, the district cooling system With a comprehensive energy prices the increase of cooling radius.when the cooling radius is 275m, the simulation cell in the cooling in the 225-275m radius of district cooling system should be adopted to arrive at a more accurate range.With the cooling of the increasing degree of centralization, the correct choice of a reasonable form of cooling system for energy conservation is of great significance.