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Study On The Electric Load Shift Rate Of The Novel Energy Storage Air-conditioning System

Posted on:2007-08-13Degree:MasterType:Thesis
Country:ChinaCandidate:Y ZhongFull Text:PDF
GTID:2132360212957219Subject:Refrigeration and Cryogenic Engineering
Abstract/Summary:PDF Full Text Request
A closed variable mass energy transformation and storage (VMETS) system for air-conditioning and heating using water-LiBr mixture as working fluid is studied in this paper. First the advanced VMETS system working principle is described and then the dynamic models of the system working process are established. Based on these dynamic models, the operation characteristics of the VMETS system according to a specific example are simulated by numerical simulation respectively under the partial storage strategies. The important basic data like the quantity of working solution charged into the system, the volume of the two storage tanks, the parameters of the working solution, and the changing rules like the working solution/refrigerant property at each status point, the power of the compressor, the load of heat exchange devices in the system, and so on are obtained by simulation under the partial storage strategies. All those are the basic data for the system design, control, economic estimate, equipment selection or design, and so on.This article except carrying on the computation of the air-conditioning system under the design day ,mainly further analyses the Variations of the performance parameter along with the temperature, such as the COP, the energy storage density, the load shift rate, the power of the compressor and so on ,and finally obtains the load shift rate on the whole refrigeration season.In this paper, we choose the system equipment by the data of the design day under the partial storage strategies, and compare the air-conditioning load shift rate and the electric load shift rate between three different running methods of the compressor. Those conclusions of the discussion can provide some theoretical references for deep research work, of the advanced VMETS system.
Keywords/Search Tags:Aqueous lithium bromide, Energy storage, refrigeration season, Non-designed day, load shift rate
PDF Full Text Request
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