The research on the liquid nitrogen drive system of automobiles mainly includes the following aspects. Systematic Cycle Study: The LN2000 system and the CoolN2Car system are representatives of the current research on the liquid nitrogen drive system cycle. Both are circulatory systems that use only liquid nitrogen as an energy storage medium. Their working principle is to use liquid nitrogen as the working medium in the open Rankine cycle, heat exchange in the ambient air heat exchanger, and work in the expander. The main components of the LN2000 system are: cryogenic Dewar, cryogenic pumps, main heat exchangers, economizers, expanders, etc. However, the efficiency of the system is only 0.2miles/gallon (about 85kmm3) and the speed is low, only 22 miles/h (about 35.4km/h). The principle of the LN2000 circulatory system is that liquid nitrogen is sent from a cryogenic Dewar to an economizer (preheat exchanger) by a cryogenic pump. After being heated by nitrogen discharged from the economizer, it enters the main heat exchanger and is heated by air. The pressure rises. High, enter the expander to do work. The discharged nitrogen is returned to the economizer and the liquid nitrogen is heated. The LN2000 system and CoolN2Car system are circulatory systems that all use liquid nitrogen as an energy storage medium, but they face the following three problems: 1 Energy is provided only by the ambient air, and the heat exchange rate is slow; 2 heat exchanger surface is easy to frost; 3 Dependent on the external air environment. Therefore, from a practical point of view, such a system has low power, slow speed, and unstable operation. The study of the expansion process: With regard to the study of the expansion process, the specific work obtained by isothermal expansion is theoretically the largest. Isothermal expansion maintains the temperature of the expanding gas during the expansion process, but such an expander is difficult to design. The actual isothermal expander has not yet been manufactured. Therefore, there is a study of quasi-isothermal expansion processes.
Open rubber and plastic mixing is the rubber factory used to prepare plastic rubber, rubber or hot refining, a type of roller exposed rubber refining machinery. This machine is suitable for EVA,rubber,synthetic rubber,hot melt and all kinds of chemistry raw material to mix ,mediate and disperse, and then put into the mass production. It is the best choice to test, make sample and learning in school.
16inch automatic crusher mill
Advantage
1. The roller is made of chilled casting vanadium & titanium alloy iron which is hard and wear-resisting, the surface hardness is above 70degree, the surface coating is about 15mm.
2. Hard tooth gear reducer with well-design structure, low noise, high efficiency and long service life.
3. Self-aligning bearing is well matching with the bearing inside leakage-proof device. The sealers are made of high temperature,wear, oil resistance material,which have very good sealing effect.
4. All main electrics are imported, the alternating current contactor is Shilin brand. The switch and button are Taiwan Tend brand.
5. Circulating lubrication system solves the oil leakage problem. The feature of this system is easy to maintain,easy to replace.
6. This machine is installed with overload protection device which protect the machine will not broken if the machine is overload. The machine will reverse 1/3 round when press the emergency stop button,which sure the production safety.
7. The [U" shape frame is whole set casting, but other factory welded together.
8. The machine base is welded by national standard I steel.
Main parameter
Name
A Automatic crusher mill
Front roller diameter (mm)(Smooth roller)
400
Rear roler diameter (mm)(Groove roller)
450
Roller length(mm)
840
Front roller speed (m/min)
12.67
Speed ratio
1:1.63
Max roller gap(mm)
10
Nip adjustment
Manual
Mixing capacity(kg)
20
Power (kw)
45-8
Motor RPM(r/min)
740
Reducer ratio
45
Reducer model
315
Roller bearing diameter(mm)
260
Bearing mode
352952YA
Bearing size(mm)
360×260×150
Name
B mixing mill
(mm) Front roller diameter(smooth roller)
400
Rear roller diameter (mm)(smooth roller)
400
Roller length(mm)
840
Front roller working speed (m/min)
19.36
Speed ratio
1:1.5
Max roller gap(mm)
10
Nip adjustment
Manual
Mixing capacity(kg)
20
Power (kw)
37KW
Motor RPM(r/min)
980
Reducer ratio
45
Reducer model
315
Roller bearing diameter(mm)
260
Bearing model
352952YA
Bearing size(mm)
360×260×150
Mixing Mill Manchine,Open Mill,Rubber Mixing Mill,Roller Mill SHIJIAZHUANG LONGXUAN TRADING CO., LTD , https://www.longxuanmachines.com