
Tubular Heat Exchanger
Dry Type Spiral Baffle Plate Water - Cooled Evaporator
Dry shell and tube evaporator is widely used in refrigeration and
air conditioning industry, which has the
advantage of low refrigerant charging, high stability of the unit
operation, the disadvantage is that the
heat transfer coefficient is low.
Some studies have shown that the distribution of refrigerant in the
distribution of each tube is one of the
main reasons affecting its heat transfer performance, and domestic
and foreign research for dry shell and
tube heat exchanger mostly concentrated in the water side, for the
tube side refrigerant The distribution of
research less.
Therefore, in order to improve the overall energy efficiency and
economy of the refrigeration unit, it is
necessary to develop a pipetting device having a good liquid
separation function by seeking the
distribution mechanism of the tube side refrigerant.
Dry evaporators can be made of bare tubes, but also with
longitudinal fins of the finned tube made of
straight tube or u-shaped tube structure, but their overall
structure is basically the same.
The advantage of the dry evaporator is that the amount of the
refrigerant is small; when the temperature
is controlled by the temperature relay, it is sensitive to the load
change, the liquid supply is accurate; the
refrigerant flow rate is quick and the oil return is good; the
refrigerant is flowing outside the pipe, Flow
resistance loss is small; water for the refrigerant, the water in
the tube outside the constant mixing, rarely
icing phenomenon.
This evaporator when the aluminum core with the fin tube, the heat
transfer coefficient of up to 1000 ~
1200kcal / m2h ℃; with a small diameter dense tube, the heat
transfer coefficient of up to 900 ~ 1000kcal
/ m2h ℃.
DRY TYPE TUBE HEAT EXCHANGER EVAPORATOR (DOUBLE MACHINE)
CAPACITY: 120KW TO 310KW
Models | QXU120D8 | QXU135D8 | QXU155D8 | QXU185D10 | QXU220D10 | QXU270D10 | QXU310D10 | ||
Rated data ti=12°C te=2°C tu=7°C Dts=5°C | Qn | KW | 120 | 135 | 155 | 185 | 220 | 270 | 310 |
Kcal/h(×103 ) | 103.2 | 116 | 133.3 | 159 | 189 | 232 | 267 | ||
Wn | m3 /h | 20.6 | 23.2 | 26.7 | 31.8 | 37.8 | 46.4 | 53.3 | |
Wm | m3 /h | 25 | 28 | 30 | 41 | 43 | 65 | 68 | |
Dpn | bar | 0.41 | 0.44 | 0.37 | 0.36 | 0.43 | 0.42 | 0.43 |
Models | QXU120D8 | QXU135D8 | QXU155D8 | QXU185D10 | QXU220D10 | QXU270D10 | QXU310D10 | |
Dimension(mm) | A | 1815 | 2115 | 2315 | 2320 | 2320 | 2654 | 2654 |
B | 219 | 219 | 219 | 219 | 273 | 273 | 273 | |
C | 200 | 200 | 200 | 200 | 234 | 234 | 234 | |
D | 1530 | 1830 | 2030 | 2000 | 2000 | 2280 | 2280 | |
E | 240 | 240 | 240 | 300 | 300 | 300 | 300 | |
Vent | S1 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 |
Outlet | S2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 |
Connection | W(DN) | 89 | 89 | 89 | 89 | 114 | 114 | 114 |
D1(mm) | 22 | 22 | 22 | 22 | 35 | 35 | 35 | |
D2(mm) | 42 | 42 | 42 | 42 | 54 | 54 | 54 | |
P(kg) | 145 | 155 | 163 | 232 | 255 | 279 | 296 | |
Qn-rated refrigerating capacity Wn-cooling water flow Wm-maximum cooling water flow Dpn-pressure drop of recirculating cooling water Dts-overheat temperature |
COOPERATED CLENTS
Wuhan Qiaoxin Refrigeration Equipment CO., LTD
WUHAN QIAOXIN REFRIGERATION EQUIPMENT CO., LTD. was founded in 2003, located in Wuhan Hubei
province, which is a professional manufacturing enterprise dedicated to R&D, design, production and
marketing of shell and tube condenser, evaporator and heat exchanger products etc. From the aspect of
technology, QIAOXIN always hold the leading position in domestic market.
QIAOXIN obtained Class I, Class II Pressure Vessel Design License and Pressure Vessel Manufacture
License, owned CNC machining center, CNC tube expander, CNC cutting machine and CO2 Flux Cored Gas
Shielded Welding etc series of advanced production equipments. QIAOXIN have a group of specialized
persons long engaged in the design and production of heat exchangers. Through long terms of technical
research, development and practice, different types and sizes of heat exchanger from design to production,
installation to test, QIAOXIN formed a complete set of management system. The rigorous design and precise
production, makes QIAOXIN can fulfill different operating requirements of customer and provide products
under various working condition. QIAOXIN also passed ISO9001:2008 international quality system certification,
through advanced quality management system strictly to control the whole process of product R&D, design,
production, inspection and service.
“Quality comes first, go for perfect”, after decades of development, QIAOXIN obtained great reputation not
only in domestic market, also spreads well in abroad. Products are exported to Europe and the United States
(owned PED certificate), Southeast Asia, Africa, and all over the country (including the "Midea" "Chigo"
"Dunham-bush" "TICA" and other well-known domestic air conditioning companies).
QIAOXIN always hold a strong sense of mission to the development of Chinese refrigeration technology, using
the most advanced refrigeration technologies, to realize the harmonious coexistence between man and
nature. On the road of development in the future, QIAOXIN will continue to adhere to the harmonious, healthy
and scientific development direction, following with the enterprise concept of "Ethics first, product second",
carrying with full enthusiasm to provide high cost performance products, outstanding product performance
and efficient services for the general customers.