Page 11 - Vol.36-No.9 issue
P. 11
REFRIGERATION & COLD STORAGE
NEW MICRO PLATE HEAT EXCHANGERS GIVE DANFOSS A
“COMPREHENSIVE PORTFOLIO” FOR CHILLERS AND HEAT PUMPS
Each new model is designed ants including propane, making their
to solve a particular system refrigerant charge-reducing properties
especially valuable.
design challenge: Like all Danfoss Micro Plate Heat Ex-
The new, R32-optimized range com- changers (MPHEs), the new ranges are
plements existing multi-refrigerant built around the proven Z-design con-
heat exchangers for R410A, R452B, and cept, which since 2016 has helped OEMs
R454B, widening chiller manufacturers’ worldwide to improve efficiency, mini-
options when reducing GWP. mize weight, and reduce the refriger-
New single and dual-circuit ver- ant charge, thanks to its high heat trans-
fer coefficient.
sions are available to complete the ex-
isting range for chillers. The portfolio All the heat exchangers can be cus- strong ambition to be manufacturers’ go-
can now cover the entire range of light tomized, matching the number of plates to choice for heat exchangers in chillers
commercial and commercial chiller and connection sizes to the individual and heat pumps alike and demon-
ranges. system requirements—and combined strates intensification of our R&D in-
with Danfoss expansion valves, they can
HDW44 is perfect for sanitary water all achieve stable outlet superheat also vestment.
heating, with a double-wall and a built- below 3K. “For the past four years, Z-design has
in interspace preventing water contami- changed the game for heat exchange ef-
Danfoss is today the only supplier
nation in the event of a refrigerant leak. that can offer such a comprehensive ficiency in condensers and evaporators.
The Suction Gas Heat Exchang- MPHE and Micro Channel Heat Ex- It means you can improve your system’s
er (SGHX) can enhance efficiency in changers (MCHE) portfolio combined capacity, or achieve the same perfor-
heat pump condensers and evapora- with comprehensive compressors, mance with a smaller size.”
tors, counteracting the impact of high- valves, line components, and techni- “The message is clear: whatever sys-
glide refrigerant blends like R455A and cal assistance for OEMs. tem you’re designing—and whichever
R454C. Olivier Pelletier, Danfoss Head of Busi- refrigerant you’re working with—talk to
The whole portfolio for heat pumps ness Development for BPHE, explains: Danfoss. You’ll find a one-stop-shop with
is qualified for flammable refriger- “These new products underline our a heat exchanger to meet your needs,
and technical support to match.
Circle 11 on enquiry card
M EQUALS OPTIMUM WITH THE NEW BRAZED PLATE CORRUGATION
KELVIN’S LARGEST, BRAZED HEAT EXCHANGER GB 1000M
Refrigeration, air conditioning tech- therefore suited to applications in build-
nology, heat pumps, and hot water sys- ing services, efficient data center air
tems are set to benefit from Kelvion’s new conditioning, or refrigeration systems.
plate corrugation for its largest Brazed The M-corrugation makes it possible,
Plate Heat Exchanger series, GB 1000. for example, to increase the yield of
Called the M-corrugation, which stands solar thermal systems during seasonal
for medium, it fits between the H version changes, without requiring a high pump
for maximum specific performance and capacity. The plate corrugation also al-
the L version for low-pressure losses. lows the resource-saving operation of
The GB 1000M Brazed Heat Exchang- heat pumps or refrigeration systems
ers for the application range from -196 to with small temperature differences be-
+200 °C and, depending on the design tween the media or optimizes the trans-
– for pressures up to 45 bar fer of heat in low-temperature heating For this purpose, the nozzles are
But medium doesn’t mean anything systems. brazed both on the connection plate and
less than top performance. The new plate With their large connections, heat ex- on the first heat exchanger plate, so they
is the ideal compromise for many appli- changers in the GB 1000M series offer are soldered twice. The Safety Chamber
cations: the M corrugation produces a the possibility of handling large vol- takes the misery out of high-temperature
large “thermal length”, so that upcoming ume flows of up to 150 m3/h in order to fluctuations by absorbing thermally-in-
heat quantities can be transferred even achieve maximum heat transfer values. duced stresses, thus reducing the me-
at the slightest temperature differences. Additional features of the GB 1000M heat chanical load on the connections and the
However, it causes lower pressure losses exchangers are the proven high leakage heat exchanger. Equipped in this way,
than the H version. safety, thanks to the 100% pressure test the GB 1000M Brazed Heat Exchangers
are suitable for applications ranging
On the other hand, Brazed Plate Heat check as well as a gas leak test at the end from -196 to +200 °C and, depending on
Exchangers with M-corrugation are of the manufacturing process. A double the design, for pressures up to 45 bar.
more powerful than the same size as L- sealing provides tightness in the con-
corrugation. The Kelvion GB 1000M is nection area: Circle 12 on enquiry card
Vol. 36 No. 9 9