Application Study Of Dry-coil And Dedicated Outdoor Air Conditioning System Design

Going though the Sars epidemic, the HVAC industry makes importance to secondary air pollution problems caused by the air-conditioning system, once again,making it on the thinking of dry-coil unit for the advantages and disadvantages, trying to attempt dry-coil and dedicated outdoor air conditioning system to improve the traditional fan coil plus fresh air system to improve indoor air quality, the prevention of micro-organisms and bacteria breeding in the coil to eliminate the breeding ground for microorganisms to avoid the issue of mold and odor, improve air quality of room.In the dry-coil and dedicated outdoor air conditioning system, the summer runing the flesh air handling unit bears all latent heat load and part of the indoor sensible heat load, dry-coil unit assumes the remaining sensible heat load, the system is known as the dry-coil and dedicated outdoor air conditioning system. This article focuses on the dry-coil and analysis dedicated outdoor air conditioning system characteristics from the respective advantages and disadvantages to strengthen the understanding of the system. fan coils are running in dry conditions, there is no condensation water plate, no condensation of water, the coils do not appear wet dirt for long running to not reduce the efficiency of heat transfer; fan coil is not wet environment to eliminate a breeding ground for microbial. the study do detailly analysis for the key features of the the dry-coil and dedicated outdoor air conditioning system, analysis flesh air treatment process and the return air treatment process, the computing and selection for the fesh air handling units and fan coil units, the connection form of cold-water systems, as well as insulation measures., This article introduces the discriminant approach for dry-fan coil units to ensure the status of running in dry condition in order to ensure the safety of system operation.The design of air-conditioning system keep up with scientific and technological development and the needs of the community, the article is an attempt for the dry-coil and dedicated outdoor air conditioning system, comparing a comprehensive analysis for various options, weighing the pros and cons conditions, choose the best option to achieve practical and economy of the dual requirements. though Comprehensive analysis, we know that the dry-coil and dedicated outdoor air conditioning system is in favor of the new savings investment, and reduce operating costs; at the same time we can run to optimize the management system for energy conservation. Dry-coil and dedicated outdoor air conditioning system meet the design requirements for air-conditioning, it can improve air quality; reduce part of the investment costs. simultaneously running through the scientific application to achieve energy-saving requirements, reflecting the advantages of air-coil system design.