Factors affecting the cooling capacity of the chiller of the chemical reactor cooling system

There are various types of chillers, such as air-cooled chillers, water-cooled chillers, etc. But no matter what the chiller is, there are some factors that affect the cooling capacity of the chiller.
                   

A cooler is an energy-saving device that is cooled by air compression or refrigerant circulation. The following factors affect the cooling capacity of the chiller:

1. Compressor power: The higher the power, the higher the cooling capacity. Depending on the size of the model, choose a different type of compressor. For example, a small chiller is a piston type, a large type is a spiral type, a centrifugal type, or the like.

2. Water temperature (different evaporation temperature, different cooling capacity): The higher the water temperature, the greater the cooling capacity, the lower the water temperature, and the smaller the cooling capacity.

3. Pump power: The amount of water circulation directly affects the heat transfer rate.
The form of the evaporator and the condenser are divided into a water tank coil test, a shell tube type, a stainless steel plate type and the like.

4. Heat transfer material: The copper tube has the best heat transfer effect.

The above are factors that affect the cooling capacity of the chiller. If you have any questions about the chemical reactor cooling system, please feel free to contact LNEYA.COM/sales@cnzlj.com

What causes sediment in the use of the chiller cooler?

A chiller is a water-cooled unit that uses water circulation to provide a constant temperature, constant flow and constant pressure cooling water. The LNEYA cold water system has its own working principle, that is, a certain amount of water is injected into the water tank of the machine, the cooling water is cooled by the refrigeration system, and then the cooling water is operated by the compressor. The cooling water is sent to the equipment to be cooled, the heat is taken away, then the temperature rises, and then flows back to the water tank to achieve a cooling effect. However, when using a chiller for a long time, there will usually be some dirt deposits in the chiller pipe or water tank. What is the reason below.

1.Chemical processor
If a zinc salt or a phosphate inhibitor is added to the water circulation system, zinc or phosphate scale is formed. Therefore, we must always carry out maintenance work on the chiller, not only to ensure the cooling capacity, but also to extend the service life of the chiller.

2. Process media leakage
The water cooler leaks, especially if it leaks oil or some organic matter causes deposits to form.

3. Air
Sediments, dust, microorganisms and their spores enter the circulatory system with the air, and sometimes insects are carried into the system, causing the heat exchanger to clog. When the environment surrounding the cooling tower is contaminated, corrosive gases such as hydrogen sulfide, chlorine dioxide and ammonia will react in the unit and indirectly cause deposition.
The LNEYA chiller cooler is a fully enclosed system that does not expose the media to outside air during use.

It can be seen from the above that in the use, the chiller needs to be maintained at all times, which not only ensures the cooling capacity, but also prolongs the service life of the chiller and the saving of circulating water.

If you need any information, you can contact LNEYA to inquire about the use of chiller coolers and other cooling system equipment at sales@cnzlj.com/LNEYA.COM.

What Are The Characteristics Of Refrigeration Of Industrial Chillers?

If there is a high temperature difference between the inlet and outlet water, then a large external tank will be used to store cold water. In this case, the cooling water will not be directly from the cooler application. Deep into the outside of the tank is a "temperature buffer sort behavior". Cold water tanks are much larger than internal ones. The cold water goes to the application of external fuel tank and come back as hot water. It can be traced back to external fuel tanks, not to industrial chillers.

Industrial chillers recycle is at constant temperature and pressure to increase stability and repeatability of water cooling equipment and instrument cleaners and conditions or clean water. Angle use and back of application of cooling of water flow.


An uncommon open-loop controlled industrial refrigerator is an open tank or oil pan at which the temperature of the liquid is continuously circulating. The liquid comes from the tank and goes back to the tank through the pump crew. It is an adjustable constant temperature sensory liquid temperature and circulation cooler to maintain constant temperature tank.

One of the new developments in industrial chillers is air cooling, not the use of cooling water. In this case, the condenser of industrial water chiller does not have cooling and hot air refrigerant, but uses cooling water. This development allows for more than 15% reduction in energy demand in coolers due to the small area of surface water. In addition, the noise level can be greatly reduced with the permission of the fans.

Most industrial chillers use cooling media for refrigeration, but some simple technologies that rely on air or water include cooling coil flow that regulates temperature. Water is a commonly used coolant in refrigeration process, although cooling mixtures (mainly with coolant additives to enhance cooling water) are often used.

Cryo Refrigeration -65℃～-10℃

Overview:

• Microcomputer control, cascade temperature controller, digital temperature display, the regulation of unit 0.1℃, inside the temperature range -20 ℃ ~ -125 ℃ adjustable.
• Multi-safety protection, more reliable operation.
• France TECUMSEH compressor, Germany DANFOSS compressor, EMERSON compressor, automatic cascade refrigeration technology.
• With self-diagnosis function, freezer overload protection, high-pressure switches, overload relays, thermal protection device and other security functions, and fully guarantee the use of safety.
• Three sealed mold layer of insulation, Extra-thick high-density polyurethane foam insulation layer, the effect of good insulation; Inline vacuum insulation panels.
• Human design, more convenient and flexible.
• Suitable for mechanical producing plant use, lab refrigerator.

 Technical Parameters:

Model	GX-6528N	GX-6550N	GX-6580N	GY-6528N	GY-6550N	GY-6580N	GY-65A16N
volume	280L	500L	800L	280L	500L	800L	1600L
Inner dimension	610*600*760	800*735*850	1000*800*1000	800*600*600	1200*650*650	1350*800*750	2000*900*900
Type	（Vertical）			（Chest/Horizontal）
Capacibility carrying	150KG	220KG	300KG	150KG	220KG	300KG	650KG
	Designed bearing capacity is two times of the standard one, (refrigeration system is designed according to the standard capacity when target artifact weight is greater than the standard capacity, the cooling rate will decrease)
Temp. range	-65℃～60℃	-65℃～60℃	-65℃～60℃	-65℃～60℃	-65℃～60℃	-65℃～60℃	-65℃～60℃
Cooling capacity at -60℃	1kw	1.5kw	2.5kw	1kw	1.5kw	2.5kw	4kw
Temp. accuracy	±2℃	±2℃	±2℃	±2℃	±2℃	±2℃	±2℃
Heating power	2kw	3kw	5kw	2kw	3kw	5kw	8kw
	Nickel-chromium alloy electric heating heater, the controller has double safety protection, with independent temperature limiter protection.
Cooling rate	(ambient temperature of 25 degrees, no-load, from 60 degrees to -60 degrees about 1 hour).；cooling rate will be a little different for temperature changes.
Controller	ASET multifunctional controller
Operation panel	7-inch color touch screen, display set temperature, measured temperature.
Temp. record	Temperature curve and fault record, U-disk data export, excel format.
Inside circulating air	1650 m³/h	2100 m³/h	2750 m³/h	2100 m³/h	2750 m³/h	3500 m³/h	6000 m³/h
	When it is open, the internal circulation fan automatically turns off. The touchscreen displays open state.
Compressor	Emerson Copeland, adopt cascade refrigeration technology
Intermediate heat exchanger	KAORI Plate heat exchanger
Dry filter	Emerson
Expansion valve	Electronic expansion valve
Evaporator	Copper-tube with aluminum-fin
Cooling Type	Air-cooled with water-cooled auxiliary functions (Ensure good cooling capacity when temp. above 30 degrees)
Means of insulation	Polyurethane foam insulation, thermal insulation layer 125 mm, with embedded FIR boards
Safety Protection	Self-diagnosis function; Phase sequence phase failure protection; leakage protector; cooling unit overload protection; high and low pressure switch, overload relay, thermal protection device, high temperature protection and temperature fault protection.
Case material	Outside is cold rolled steel painting, internal is SUS304 wire drawing board.
Refrigerant	R404A R23
Dimension	1150*1150*1850	1350*1300*1850	1550*1300*2100	2200*1150*1150	2700*1200*1200	2900*1300*1250	3700*1400*1350
Power 380V 50HZ	5.5KW MAX	7.5KW MAX	13.5KW MAX	5.5KW MAX	7.5KW MAX	13.5KW MAX	19KW MAX
Weight	380kg	480kg	650kg	385kg	485kg	650kg	780kg
Optional	High temperature reaches 150degree and temperature accuracy is ±0.5degree；the input power will be changed（When select this model, the thickness of thermal insulation layer will be 150mm，thermal insulation material will be silicate and vacuum plate）
Optional	Closed circulating oil heating system, no direct electric heating element inside the box, suitable for flammable products test
Optional	Temp. accuracy ±0.5℃
Optional	Cooling and heating program controlled, meet cold treatment process requirements(can set 5 programs, each program can edit 45 steps.)
Optional	Interior door, reduce cooling capacity lost when picking small workpieces (temperature below 60 degrees optional)
Optional	Outside SUS304 wire drawing board case
Optional	Diameter 50mm cable hole
Optional	Electric heating vacuum glass observation window (with lighting) 200mm*300mm
Optional	Low temperature automatic defrost (can be once per hour or use manual button to defrost), ensure it can work at low temperature for long time even the door is open and close frequently）

Ultra-low temperature refrigerator is also known as cryopreservation box, cryogenic refrigerator, cryopreservation box, cryo refrigeration and so on, the common low temperature refrigerator of which is -65 ℃ ~ -10℃.

The cryogenic systems of ultra-low temperature refrigerator basically adopts the working principle of cascade refrigeration and is equipped with two fully enclosed compressors as high and low temperature compressor. The copper tube of the low-temperature evaporator is attached directly to the outside of the inner box in the form of a coil and with heat transfer cement block between the coil and the box wall of the gap, to increase the heat exchange effect. The condensing evaporator is a shell tube structure with four tubes of the thread-shaped copper tube and a countercurrent heat exchange.

The cryogenic stage system is equipped with a gas heat exchanger to make the low-pressure gas coming out of the evaporator heat exchange with the high-pressure gas before the condenser-evaporator, which not only reduces the heat load of the condensing evaporator but also makes full use of the heat.The wax removal filter is the most common, the main purpose of the filter is to remove the paraffin from the frozen oil in order to reduce the possibility of "oil plugging" in the system.

In addition, according to different applications, ultra-low temperature refrigerator can also be equipped with some accessories. For example, take temperature re
corder for a permanent record of operating parameters; use the carbon dioxide backup system for special circumstances to ensure the gas preservation environment to maintain a normal state and choose the voltage booster for guaranteeing the normal work of the compressor under low pressure.

Contact Lneya for more.