With the start of the free cooling season, Kaltra has announced the availability of scalable free cooling modules that can be paired with its air-cooled chillers, including the Lightstream Screw II models with inverter-driven and fixed-speed screw compressors and Lightstream Scroll II series chillers.
Propane (R290) is a naturally occurring hydrocarbon used successfully in industrial refrigeration for many years received attention from designers, contractors, operators, and retailers to reduce greenhouse emissions. An indication of the increasing acceptance of propane is its adoption by many key customers from large supermarket and shopping mall chains to franchise food stores and minimarts at gas stations throughout the world. The latest trend in this market segment is adopting microchannel heat exchangers – condensers and evaporators.
According to the latest company data, extensive sales growth observed in preceding quarters continued in Q2 2021, totaling 23% year-on-year and by 11% quarter-on-quarter.
Microchannel coils have become a mainstay in the HVAC industry for most air-cooled chillers and other air conditioning equipment. Aluminum microchannel heat exchangers (often abbreviated as MCHE or MCHX) offer a line of advantages for both manufacturers and end-users:
- Reduced refrigerant footprint: internal volume of a microchannel condenser is about up to 60% smaller compared to a finned pack coil with copper tubes of the same capacity.
- High corrosion resistance contributes to longer coil service life.
- Lower required fan power draw as air pressure resistance of MCHE coils is low.
- As a cheaper material, aluminum help keep condenser costs down.
- Low weight.
In power plants, the largest water consumers are cooling systems, as a large amount of heat must be removed to condense the steam used to drive turbine generators. Historically, cooling was provided by water sources – rivers and lakes, but nowadays, more and more power plants use dry cooling systems that use little to no water. These systems have higher capital costs but use more than 95% less water than wet cooling systems.
Dry coolers are heat rejection devices used to cool down process liquids such as water, glycols, oils by forced dissipation of heat energy to the atmosphere. In contrast to wet cooling towers, dry coolers are closed-circuit systems, involving no direct contact between air and process fluid.
Dry coolers can be used as stand-alone fluid coolers or as a part of an air conditioning or refrigeration system to cool fluids in intermediate heat exchangers, water chillers’ evaporators, and for many other purposes.
Following numerous performance improvements and enhancing functionality implemented in the latest version of control software installed on second-generation chillers, Kaltra adds sequence management as an option available for air-cooled models equipped with scroll, screw, and Turbocor-based chillers, as well as for chiller versions with free cooling.
Entering the first quarter, the company recorded double-digit growth rates across its biggest markets in Europe. This is the result of a great team effort by all of our employees. Despite the adverse economic climate, we still used the year to make Kaltra a better company.
Awarded a contract for cooling equipment supply in 2020, Kaltra recently delivered dry coolers of the total capacity of 3500kW to its customer in Lahti, Finland, a world-known food processing company that constructs an innovative, oat hull-based xylitol production factory. The plant includes a bio-heating facility to produce bioenergy for the xylitol production, mill, and rye crisp production lines.
Family of Ultracompact II chillers with air-cooled condensers received latest-generation scroll compressors and now offered with lower GWP refrigerants R32, R452b, and R454b. Combined with this, operation efficiency has been lifted by 6% for chillers running on R410a and by 10% for those running on lower GWP gases.
Model Bora XL air-cooled condensers, designed for outdoor applications, provide an efficient and practical solution to the selection of condensing equipment. These condensers feature an innovative design aiming to increase the performance and energy efficiency to meet today’s industrial and commercial refrigeration’s stringent needs.
With water and energy becoming very precious resources, dry coolers provide a water-saving alternative to open-circuit cooling towers. With its new dry cooler optimized to deliver long-term savings in water, energy, and maintenance time, Kaltra shows the massive potential offered by its technology.
With the continuously rising demand for cooling in hot climate regions, low-temperature process applications, and heat recovery solutions, Kaltra had busied developing chillers for high temperature lift applications. Efforts were made towards the design of Turbocor-based air-cooled chillers as the most energy-efficient and environmentally sustainable solution.
Customers are increasingly moving towards air conditioning and refrigeration equipment running on lower-GWP alternatives than currently widely used refrigerant R410a.
The current restrictions, such as Europe’s F-Gas regulations, have started the phase-down of HFCs, including R410a, to slow global warming and reduce direct carbon emissions. With the start of HFCs phase-down, prices and availability of these refrigerants were significantly affected and led to a growing demand for lower-GWP alternatives.
Kaltra is set to launch its Lambda DX precision air conditioning system employing pumped refrigerant economizer. Lambda DX combines direct expansion operation during warmer ambient temperatures and refrigerant economizer mode during cooler temperatures, resulting in a reduction in annual power consumption for the system.
WHO WE ARE
Kaltra is a customer-focused developer and supplier of reliable, energy efficient thermal management equipment and solutions.
From the professionalism of our research and development engineers to the wide experience of our service team, we are dedicated to delivering you the best service possible.