Pelagic Squid Doubles Saury Fishing Vessel ’s Refrigeration Unit And Selection Of Energy-saving Configuration

Pacific saury and squid are important fishing species in ocean-going fishing in China. The pacific saury is mainly distributed in the northwestern Pacific. Squid has a wide geographical distribution, and the major fishing grounds and fishing season are not the same. Pacific saury only has three months for fishing season, which is very short. So pacific saury and squid fishing boat can achieve complementary according to different seasons, and multi-purpose fishing boats come into being. Refrigeration system is regarded as an important part of the squid and pacific saury fishing boat, which need to be optimized and improved, so it is of great research value, especially the energy saving and optimization of freezing room is particularly prominent.For the purpose of saving energy, this paper summarizes the development of refrigeration system in the domestic and foreign, introduces the study of energy saving in fishing boat and The current research status of main refrigeration equipment and Simulation work of the freezing room. According to pacific saury and squid fishing boats, "Lu Peng 027" working conditions of the frozen seas in the Pacific Northwest from June 2014 to October 2014,First, the cabin cooling system and main cooling equipment were introduced, generally depicting the overall structure and composition of fishing vessels, fishing vessels between the refrigerant and the fish tank location is determined, for making basis in the later with frozen can do the energy and time test.Then using adjustable temperature freezers to study energy consumption and quick-freezing efficiency. Tests showed Pacific saury freezes to specified temperature-18 ℃,which is not accompanied by freezing temperature decreases and showed a decreasing trend,and energy consumption is aslo not a linear function of the freezing temperature. And the same frozen squid and saury have a different cooling curves of temperature, before performing batch freezer, it is best to test cooling curve of each catch, making the similar cooling curve catches unified frozen. Comparing-18℃,-25℃,-30℃,-35℃,-40℃ frozen time and energy consumption, founding that in the freezing temperature:-35 ℃ and-30 ℃,power consumption is closing, but at-35 ℃ has frozen shorter, faster freezing rate. So finding a suitable freezing temperature and time in the freezing room is an effective way to improve production efficiency and reduce the energy consumption.On the basis of the determination of optimal freezing temperature,calculate the refrigeration system of the heat calculation,Mainly includes catches Consumption of cold is 502857 w, freezer infiltration catches Consumption of cold heat loss parameters is 10278 w,Fish hold infiltration heat loss is 10391 w,Quick-freezer infiltration heat loss parameters is 10391 w.Cabin air heat parameters is 2205 w and Operate heat parameters is 9700 w.It is concluded that the total heat,respectively Calculate the selection of main equipment refrigeration system including Refrigeration compressor is JZY8ASJ17、Fish hold evaporator,The condenser is DWN-110、The ammonia liquid separator is AF-150、The intermediate cooler is ZL8.0、The cooling water pump is DXZ1-4.0A. This set of refrigeration equipment selection for ocean-going squid and saury ship as reference for the design of the refrigeration system。。Finally,the paper envisages that it is improved rate of temperature fall in oceangoing ships by the way of studying the freeze shelves structure and on average, the effects of cooling rate, to achieve the goal of high efficiency and low energy consumption. The frame freezing devices in freezing room are studied and simulated. Looking forward to looking for best shelf structure for freezing pacific saury, which is regarded as the main direction of future research.