Page 70 - Climate Control News - July 2018

New products
Measure chiller air flow to reduce costs
Latest battery inverter- charger gets a redesign
GLOBAL ENERGY SYSTEM specialist Vic- tron Energy has unveiled its latest battery in- verter-charger, the MultiPlus-II, which comes with a new-look stylish steel enclosure.
The MultiPlus-II has undergone the largest internal electronics redesign in more than a decade and a lower production cost, which makes the product much more competitive, es- pecially in large-scale energy projects.
Victron is unveiling its first model in the range, the MultiPlus-II 48/3000/35-32 230V from residential batteries to the 129-megawatt- hour Tesla “big battery” in South Australia.
Victron MultiPlus-II inverter-chargers are available through the company’s global distri- bution network and already complies with the Australian Standard for grid-connected in- verters (AS 4777).
Victron Energy BV Managing Director Matthijs Vader said the company has deliv- ered a better product at a lower price to make MultiPlus-II attrac-
tive for large-scale energy storage projects.
“As well as a new look and a flatter form factor, the MultiPlus-II has redesigned its proven electronics to take advantage of minia- turisation while complying with emerging energy in- dustry standards such as a built-in double-relay to en- able ‘anti-islanding’ for safe interaction with energy grids,” he said.
Victron Energy BV is a 43-year-old company based in the Netherlands.
The MultiPlus-II is a 48-volt inverter-charger that readily connects with a wide range of ener- gy storage systems, from lead-acid and lithium- based batteries to zinc-bromine flow batteries.
The unit is easier to install than earlier mod- els with AC connections accessible via a single plate on its base. The 18kg MultiPlus-II draws just 11 watts of standby power, less than half that used by the model it supersedes.
As with all Victron inverter-chargers, the MultiPlus-II is a transformer-based system, which can immediately deliver backup power if the grid drops out, including start-up supply for high-demand devices such as air condition- ers and freezers.
Vader said he expected strong demand for the MultiPlus-II range. “In Australia, we cost less than half the price of competing comparably- featured battery inverter-chargers,” he said.
Victron Energy managing director, Matthijs Vader with the MultiPlus-II
The ST75 Series air/gas flow meter.
FLUID COMPONENTS INTERNATIONAL
(FCI) has released the ST75 Series air/gas flow meter for building, plant and process engineers responsible for managing large HVAC and other process cooling equipment systems.
The meter provides precise direct mass flow measurement for superior accuracy, repeatabili- ty and dependability.
Energy efficiency of HVAC and other process cooling equipment systems in large commercial buildings, manufacturing plants and industrial processes relies on precision air flow metering.
The ST75 Series air/gas flow meter features an advanced solid-state thermal dispersion mass flow sensing element for years of accurate, trou- ble-free service measuring air flow in chiller sys- tems and duct work.
The ST75 flow meter operates over a wide air flow range that also includes mixed gas environ- ments from 0.07 to 950 NCMH, depending on line size. For variable demand cycles due to weather or production requirements, the ST75
meter is factory preset to 100:1 turndowns. With built-in process temperature compen- sation for accuracy, the precision ST75 flow meter maintains consistent performance in high temperature climates and rugged plant
environments.
It features highly dependable accuracy to ±1%
of reading with ±0.5% repeatability in line sizes from6to51mm.
The ST75 f low meter’s precision f low element has a no-moving parts design, which employs platinum RTD sensors embedded in equal mass thermowells with its microprocessor electronics calibrated to laboratory standards for air and a wide variety of other gases. This no-moving
parts design provides extra reliability where pro- cess safety is a concern.
Ideal for crowded equipment areas in HVAC mechanical rooms or on the factory floor, the compact ST75 model comes in a choice of either inline or insertion mounting configurations and features remote mounting capabilities for haz- ardous plant environments.
The model ST75AV features a built-in Vortab flow conditioner where lack of pipe straight-run is a potential issue. The transmitter, which in- cludes a full digital display, can be mounted up to 15 meters away from its thermal mass flow sensor in piping or ductwork and connected via two 0.50-inch FNPT or M conduit connections.
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