Heavy steam Jet Refrigeration System
Working Principal of Steam aircraft refrigeration system
Department of Mechanical Executive
National Company of Technology, Patna
Patna-800005, Bihar (India)
This is to certify that seminar statement entitled Doing work principle of Steam aircraft refrigeration system has been made by me under the supervision of Dr . Amarnath Sinha Mentor of Mechanical Engg. Office N. I actually. T, Patna has not been submitted by me elsewhere pertaining to award of any degree
Roll. Number 1126004
Scholar of second semester
Meters. Tech (Mechanical Engg. )
N. My spouse and i. T., Patna
Steam jet ejector
Benefit and Drawback
Recent Development in Steam plane refrigeration program
In steam aircraft refrigeration systems, water can be utilised as the refrigerant. Just like air, it truly is perfectly safe. These devices were applied successfully to refrigeration initially of this century. At low temperatures the saturation challenges are low (0. 008129 bar at 4В°C) as well as the specific amounts are substantial (157. three or more m3/kg in 4В°C). The temperatures which can be attained applying water being a refrigerant are certainly not low enough for most refrigeration applications tend to be in the selection which may fulfill air conditioning, air conditioning, or chilling requirements. Also, these devices are used in certain chemical companies for several procedures, e. g. the removal of paraffin wax from lubricating herbal oils. Note that heavy steam jet refrigeration systems aren't used the moment temperatures below 5В°C are required. The main benefits of this system are definitely the utilization of mainly low-grade strength and comparatively small amounts of shaft job. here water is used as the refrigerant and the cooling down effect is produced in the steam plane refrigeration constant cycle simply by vaporization of the part of the drinking water in the evaporator at a low absolute pressure level. The steam fly refrigeration program (also called ejector system refrigeration system) is one of the oldest methods of generating refrigeration result. The basic pieces of this system is surely an evaporator, an air compressor device, a condenser and a refrigerant control device. This system employs a steam injector or booster (instead of mechanical compressor) to compress the refrigerant to the essential condenser pressure level. In this system, water is used since the refrigerant. Since the abnormally cold point of water is definitely 0В°C, therefore , it may not be used for applications below 0В°C. The steam jet a fridge system is traditionally used in meals processing vegetation for pre-cooling of fresh vegetables and paying attention fruit juices, gas plants, daily news mills, breweries etc .
Rule of vapor jet refrigeration system: -
The cooking point of the liquid improvements with difference in external pressure. In normal conditions, pressure exerted within the surface of your liquid is definitely the atmospheric pressure. If this atmospheric pressure is lowered on the surface area of a liquefied, by some means, then the liquid begins boiling by lower heat, because of reduced pressure. This kind of basic principal of hot of water at reduced temperature by reducing the pressure about its surface area is used in steam plane refrigeration system. The cooking point of pure normal water at common atmospheric pressure of 760 mm of Hg is 1 00В°C. It may be known that drinking water boils at 12вЂІC in the event the pressure around the surface of water is kept in 0. 014 bar with 7вЂІC if the pressure for the surface of water can be 0. 01 bar. The reduced pressure on the surface of water is taken care of by throttling the steam through the jets or nozzles.
WORKI NG OF STEAM JET REFRIGERATION SYSTEM...